Kitz Forum

Broadband Related => FTTC and FTTP Issues => Topic started by: adslmax on July 30, 2018, 11:47:26 PM

Title: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on July 30, 2018, 11:47:26 PM
Is it true that Openreach FTTC no longer get 96.69% from IP Profile if the sync rate sit at 79999K from Target SNR 3dB as the IP Profile sit at 74.1Mb rather than 77.35Mb with G.INP enabled.

Before:

Max Rate 80021K
Sync Rate 79999K
SNR 5.9dB
G.INP Enabled
Bras IP Profile 77.35Mb (96.69%)

Now:

Max Rate 81069K
Sync Rate 79999K
SNR 3.1dB
G.INP Enabled
Bras IP Profile 74.1Mb (92.64%)
 
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on July 31, 2018, 01:09:57 AM
Depends if your DLM profile is Re-tx high  - See NGA for VDSL / FTTC  Profiles (https://kitz.co.uk/adsl/IPprofile.htm#IP_and_bRAS_profiles)

Quote
Figure is 91-92% for lines which have High Re-tx DLM profiles

I think most/all lines on 3dB have re-tx high.


Whats your INP REIN figure from your line stats?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on July 31, 2018, 01:49:28 PM
From my experience all Broadcom modems use retx high on 3, 4, and 5dB SNRM targets.

I've only ever once seen a line with a 3dB (or 4/5dB) SNRM target with retx low and that was Blacksheep using his
BT HH5A.
Usually we can't see the stats of this modem in detail but he posted his line profile which confirmed it.

https://forum.kitz.co.uk/index.php/topic,20102.msg352352.html#msg352352

This was fairly early on in the XdB rollout so things may have changed but I'm pretty convinced the Broadcoms default to retx high.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on July 31, 2018, 02:02:35 PM
@kitz how do I find out of INP REIN figure in my router stats?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on July 31, 2018, 03:02:52 PM
@kitz how do I find out of INP REIN figure in my router stats?

adsl info --stats

You're looking for

Bearer 0
INPRein = 1
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Black Sheep on July 31, 2018, 07:08:11 PM
From my experience all Broadcom modems use retx high on 3, 4, and 5dB SNRM targets.

I've only ever once seen a line with a 3dB (or 4/5dB) SNRM target with retx low and that was Blacksheep using his
BT HH5A.
Usually we can't see the stats of this modem in detail but he posted his line profile which confirmed it.

https://forum.kitz.co.uk/index.php/topic,20102.msg352352.html#msg352352

This was fairly early on in the XdB rollout so things may have changed but I'm pretty convinced the Broadcoms default to retx high.

Had another recently on a Hub 6.  :)
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on July 31, 2018, 07:32:42 PM
 ??? How can you access to BT with all these service tools BS?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 01, 2018, 12:36:53 PM
He's an OpenReach engineer max ...

Thanks BS! Impossible to tell from the stats of said modem.

It's probably a Broadcom thing.
When MDWS was still up I checked every single user with a sub 6dB SNRM target* and every single 1 had Bearer 0 INPRein 1 which we understand to be retx high.

* it was easy to tell on mdws between snrm's with a lower target and those that had dropped from the 6dB target.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 01, 2018, 12:39:56 PM
Ah that's explain cos he work for openreach but I do think that's every customers should have that feature tools via the ISP.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Black Sheep on August 01, 2018, 03:45:37 PM
Thanks BS! Impossible to tell from the stats of said modem.



Not a problem, pal.  :)

Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Archetype486 on August 01, 2018, 11:33:58 PM
I am currently on 3db and my line is re-tx low. It was on high after my line was un-banded and this was confirmed by my ISP.

Sync rate is: 68680
BRAS rate is: 66410 (96.74%)

How I got it changed was to manually limit my connection speed, thus reducing errors. The DLM then kicked in after just under a week and removed re-tx high.

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 18741 Kbps, Downstream rate = 68643 Kbps
Bearer: 0, Upstream rate = 18741 Kbps, Downstream rate = 68680 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        3.3             6.1
Attn(dB):        18.3            0.0
Pwr(dBm):        13.3            7.4

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              22
B:              243             239
M:              1               1
T:              0               64
R:              10              14
S:              0.0000          0.4075
L:              17962           4987
D:              8               1
I:              254             127
N:              254             254
Q:              8               0
V:              0               0
RxQueue:                56              0
TxQueue:                14              0
G.INP Framing:          18              0
G.INP lookback:         14              0
RRC bits:               0               24
                        Bearer 1
MSGc:           154             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              6.4000          0.0000
L:              40              0
D:              3               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               1477377
OHFErr:         7               718
RS:             1485793448              670977
RSCorr:         10471195                3948
RSUnCorr:       0               0
                        Bearer 1
OHF:            116504466               0
OHFErr:         0               0
RS:             1165044046              0
RSCorr:         203             0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         3051208         0
rtx_c:          9323            0
rtx_uc:         32              0

                        G.INP Counters
LEFTRS:         67              0
minEFTR:        68681           0
errFreeBits:    1960233053              0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    2350277003              0
Data Cells:     868773811               0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             5               676
SES:            0               0
UAS:            29              29
AS:             1871898

                        Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            6.54
OR:             0.01            34.22
AgR:            68750.78        18775.16

                        Bearer 1
INP:            4.50            0.00
INPRein:        4.50            0.00
delay:          3               0
PER:            16.06           0.01
OR:             79.68           0.01
AgR:            79.68   0.01

Bitswap:        282856/282856           16941/16943

Total time = 21 days 15 hours 58 min 47 sec
FEC:            10471195                3948
CRC:            7               718
ES:             5               676
SES:            0               0
UAS:            29              29
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 13 min 47 sec
FEC:            4640            3
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            5484            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 15 hours 58 min 47 sec
FEC:            299507          221
CRC:            0               33
ES:             0               29
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            412877          191
CRC:            0               32
ES:             0               32
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 21 days 15 hours 58 min 17 sec
FEC:            10471195                3948
CRC:            7               718
ES:             5               676
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
 >
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 03, 2018, 09:34:21 PM
I am currently on 3db and my line is re-tx low. It was on high after my line was un-banded and this was confirmed by my ISP.

Sync rate is: 68680
BRAS rate is: 66410 (96.74%)

How I got it changed was to manually limit my connection speed, thus reducing errors. The DLM then kicked in after just under a week and removed re-tx high.

I can see your stats confirm this with Bearer 0 INPRein 0.
I'm now 110% confident this tells us with certainty if a line is retx low/high.

I just capped my own line from 46Mb to 32Mb in the hope of nudging DLM to retx low.

edit: to cap your line the necessary commands is

xdslcmd configure --maxDataRate 60000 20000 100000
or
adsl configure --maxDataRate 60000 20000 100000

This would cap the line at 60/20. The 3rd figure can be left at 100000. Adjust to suit your own line.

If you are unsure if you need to use adsl or xdslcmd feel free to ask and dungeons will be happy to advise.

Would anyone who is taking advantage of this advice to lower retransmission level and who runs DslStats spend a couple minutes of your time to contribute to the pool of knowledge.

I'm interested in seeing the following figures before capping your line and during the cap.

ES and FEC
and from the G.INP tab
rtx_tx, rtx_uc and LEFTERS

Snapshots/Screenshots of these graphs would be very much appreciated.
We would like to get some idea what parameters DLM is monitoring when deciding on retx high/low.

DslStats does not routinely gather snapshots of G.INP graphs but clicking the camera icon in the bottom left of DslStats while viewing each graph will take a snapshot of that particular graph.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: underzone on August 03, 2018, 10:23:18 PM
I just capped my own line from 46Mb to 32Mb in the hope of nudging DLM to retx low.

What CLI command did you enter mate?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on August 04, 2018, 12:51:06 AM
I can see your stats confirm this with Bearer 0 INPRein 0.
I'm now 110% confident this tells us with certainty if a line is retx low/high.

I think that INP Rein 0 = Off. 
Like you, I'm pretty sure that this is the indicator for re-tx low/high, which is why I asked Max to provide that info from his stats.

Quote
I just capped my own line from 46Mb to 32Mb in the hope of nudging DLM to retx low.

Interesting experiment.  Good luck :)
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Archetype486 on August 04, 2018, 12:53:59 AM
What CLI command did you enter mate?

I used the information in this thread https://forum.kitz.co.uk/index.php/topic,16427.0.html to cap my line.

adsl configure --maxDataRate 30000 15000 100000 is what I used on my Zyxel VMG8924-B10A
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Archetype486 on August 04, 2018, 01:04:58 AM
I can see your stats confirm this with Bearer 0 INPRein 0.
I'm now 110% confident this tells us with certainty if a line is retx low/high.

I just capped my own line from 46Mb to 32Mb in the hope of nudging DLM to retx low.

Hopefully it works for your line. Iím sure I capped my line at 30Mb and took a few days for the DLM to kick in if I can remember correctly, I done it a few months back and has been on re-tx low ever since.

My last modem reboot was 24 days ago and my line is pretty stable.

Iím glad that I could help confirm this.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: iwish on August 09, 2018, 04:37:39 PM
Going to stick in my own stats.. Have never played with the line so it is as it is.
Code: [Select]
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 17943 Kbps, Downstream rate = 70940 Kbps
Bearer: 0, Upstream rate = 17999 Kbps, Downstream rate = 72393 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 3.0 5.8
Attn(dB): 16.6 0.0
Pwr(dBm): 13.9 7.2
VDSL2 framing
Bearer 0
MSGc: -6 23
B: 243 239
M: 1 1
T: 0 64
R: 10 14
S: 0.1073 0.4242
L: 18933 4790
D: 8 1
I: 254 127
N: 254 254
Q: 8 0
V: 0 0
RxQueue: 56 0
TxQueue: 14 0
G.INP Framing: 18 0
G.INP lookback: 14 0
RRC bits: 0 24
Bearer 1
MSGc: 154 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 6.4000 0.0000
L: 40 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 1170225
OHFErr: 0 194
RS: 191186664 829914
RSCorr: 368828 1528
RSUnCorr: 0 0
Bearer 1
OHF: 57940793 0
OHFErr: 0 0
RS: 579407315 0
RSCorr: 0 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 16430834 0
rtx_c: 8548 0
rtx_uc: 0 0

G.INP Counters
LEFTRS: 38 0
minEFTR: 72378 0
errFreeBits: 1027465184 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 716779047 0
Data Cells: 2166399884 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 155
SES: 0 0
UAS: 27 27
AS: 930687

Bearer 0
INP: 47.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 6.81
OR: 0.01 34.04
AgR: 72467.34 18033.49

Bearer 1
INP: 4.50 0.00
INPRein: 4.50 0.00
delay: 3 0
PER: 16.06 0.01
OR: 79.68 0.01
AgR: 79.68 0.01

Bitswap: 410480/410480 24640/24643

Total time = 1 days 18 hours 31 min 54 sec
FEC: 368828 1528
CRC: 0 194
ES: 0 155
SES: 0 0
UAS: 27 27
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 1 min 54 sec
FEC: 46 3
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 893 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 18 hours 31 min 54 sec
FEC: 16489 66
CRC: 0 17
ES: 0 16
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 45895 61
CRC: 0 19
ES: 0 18
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 10 days 18 hours 31 min 27 sec
FEC: 368828 1528
CRC: 0 194
ES: 0 155
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: underzone on August 09, 2018, 05:43:06 PM
Nice! 3dB profile and NOT re-transmission high.

Bearer 0
INP:      47.00      0.00
INPRein:   0.00      0.00
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on August 11, 2018, 06:16:29 PM
So it worked!  :yay:
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 13, 2018, 01:47:19 AM
So it worked!  :yay:

That was just another user (but only the 2nd I've seen) showing retx low @ 3dB.

Then about 15 mins ago...

Quote
13 Aug 2018 01:21:57   Email alert sent: "Alert: Modem/router re-sync"

And we have a winner!

Code: [Select]
adsl info --stats

adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    1
Last initialization procedure status:   0
Max:    Upstream rate = 6762 Kbps, Downstream rate = 46016 Kbps
Bearer: 0, Upstream rate = 6762 Kbps, Downstream rate = 45560 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime

                Down            Up

SNR (dB):        3.4             6.0
Attn(dB):        24.6            0.0
Pwr(dBm):        13.5           -0.6

                        VDSL2 framing

                        Bearer 0

MSGc:           -6              26
B:              235             207
M:              1               1
T:              0               37
R:              12              10
S:              0.0000          0.9765
L:              12035           1786
D:              8               1
I:              248             109
N:              248             218
Q:              8               0
V:              1               0

RxQueue:                36              0
TxQueue:                12              0
G.INP Framing:          18              0
G.INP lookback:         12              0
RRC bits:               0               24

                        Bearer 1

MSGc:           90              -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              10.6667         0.0000
L:              24              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0

RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters

                        Bearer 0

OHF:            0               23154
OHFErr:         0               0
RS:             5051464         856543
RSCorr:         18653           0
RSUnCorr:       0               0

                        Bearer 1

OHF:            13073           0
OHFErr:         0               0
RS:             78070           0
RSCorr:         0               0
RSUnCorr:       0               0

                        Retransmit Counters

rtx_tx:         96680573                0
rtx_c:          3019            0
rtx_uc:         71524           0

                        G.INP Counters
LEFTRS:         11              0
minEFTR:        45553           0
errFreeBits:    145196597               0

                        Bearer 0

HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    18398873                0
Data Cells:     3792543         0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1

HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             11              36
SES:            11              0
UAS:            890             879
AS:             210

                        Bearer 0

INP:            46.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            9.06
OR:             0.01            28.23
AgR:            45632.39        6789.77

                        Bearer 1

INP:            2.50            0.00
INPRein:        2.50            0.00
delay:          0               0
PER:            16.06           0.01
OR:             47.81           0.01
AgR:            47.81   0.01

Bitswap:        67/67           3/3

Total time = 1 days 5 hours 46 min 20 sec

FEC:            53584           46
CRC:            581             39
ES:             11              36
SES:            11              0
UAS:            890             879
LOS:            1               0
LOF:            8               0
LOM:            0               0

Latest 15 minutes time = 1 min 20 sec

FEC:            3907            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0

Previous 15 minutes time = 15 min 0 sec

FEC:            14789           0
CRC:            0               1
ES:             0               1
SES:            0               0
UAS:            30              30
LOS:            0               0
LOF:            0               0
LOM:            0               0

Latest 1 day time = 5 hours 46 min 20 sec

FEC:            26653           5
CRC:            581             7
ES:             11              7
SES:            11              0
UAS:            67              56
LOS:            1               0
LOF:            8               0
LOM:            0               0

Previous 1 day time = 24 hours 0 sec

FEC:            26931           41
CRC:            0               32
ES:             0               29
SES:            0               0
UAS:            823             823
LOS:            0               0
LOF:            0               0
LOM:            0               0

Since Link time = 3 min 29 sec

FEC:            18653           0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0

NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

 >

It took a few hours over 9 days for DLM to drop from retx high to low.
I had anticipated 8-11 days.

IP Profile is 96.69%.
Hopefully it holds retx low. It's a nice little boost in throughput.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: banger on August 13, 2018, 02:19:04 AM
Good news John.  :cool:
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 13, 2018, 02:21:37 AM
That's good news John.

Has Openreach changed on retx low @ 3dB for everyones now to get IP Profile at the maximum rate 96.69%? I hope so :)
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 13, 2018, 03:18:54 AM
No max I had to "trick" DLM in to thinking my line is more stable than it really is by capping my sync.

I always had 0 ES and 0 LEFTERS everyday.
rtx_tx only lowered a very small amount with my line capped.
The main change was my FEC numbers. They reduced from between 1,000 - 10,000/min to under 1,000/hour with the cap on.
This again makes me think DLM takes FEC into account.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 13, 2018, 03:23:22 AM
How to do this? This is very clever way to trick DLM. :)
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: banger on August 13, 2018, 04:20:20 AM
Max see this sticky post.

https://forum.kitz.co.uk/index.php/topic,16427.0.html
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: underzone on August 13, 2018, 09:09:16 AM
My line is now in the 3dB with INP=48 (no INPREIN=1) club too:

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 28910 Kbps, Downstream rate = 82879 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        3.3             15.5
Attn(dB):        16.7            0.0
Pwr(dBm):        13.3            7.2

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              130             237
M:              1               1
T:              0               42
R:              8               16
S:              0.0000          0.3781
L:              21468           5374
D:              16              1
I:              139             127
N:              139             254
Q:              16              0
V:              14              0
RxQueue:                60              0
TxQueue:                20              0
G.INP Framing:          18              0
G.INP lookback:         20              0
RRC bits:               0               24
                        Bearer 1
MSGc:           186             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              5.3333          0.0000
L:              48              0
D:              3               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               197297
OHFErr:         0               0
RS:             60230352                3987849
RSCorr:         2867            0
RSUnCorr:       0               0
                        Bearer 1
OHF:            48809           0
OHFErr:         0               0
RS:             584965          0
RSCorr:         0               0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         43403           0
rtx_c:          0               0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         0               0
minEFTR:        79982           0
errFreeBits:    956596          0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    120614397               0
Data Cells:     7403226         0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               0
SES:            0               0
UAS:            30              30
AS:             784

                        Bearer 0
INP:            48.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            80614.82        20063.54

                        Bearer 1
INP:            4.00            0.00
INPRein:        4.00            0.00
delay:          3               0
PER:            16.06           0.01
OR:             95.62           0.01
AgR:            95.62   0.01

Bitswap:        239/239         0/0

Total time = 13 min 34 sec
FEC:            2867            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            30              30
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 13 min 34 sec
FEC:            2867            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            30              30
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 13 min 34 sec
FEC:            2867            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            30              30
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 13 min 3 sec
FEC:            2867            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
 >

I capped my line at 71M and DLM acted after 4 days. Lets just hope the reduced INP levels remain...  :fingers:
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on August 13, 2018, 10:02:12 AM
Then about 15 mins ago...

And we have a winner!

IP Profile is 96.69%.
Hopefully it holds retx low. It's a nice little boost in throughput.

Excellent news  :yay:

Quote
I always had 0 ES and 0 LEFTERS everyday.
rtx_tx only lowered a very small amount with my line capped.
The main change was my FEC numbers. They reduced from between 1,000 - 10,000/min to under 1,000/hour with the cap on.
This again makes me think DLM takes FEC into account.

That is interesting as previously Openreach said they didn't from a few sources. 
However since G.INP I've suspected they used other params and when I asked, they wouldn't be drawn.  When I mentioned LEFTRS it was glossed over, but I should/would have thought that would be the most likely one to watch.

--------------

PS did your rtx_uc figures change?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Ixel on August 13, 2018, 10:16:14 AM
I've always suspected that Openreach's DLM takes FEC errors into consideration, as to whether it's worth removing traditional interleaving or not for example. It's interesting to read someone else's experience and the possibility that it may do so.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 13, 2018, 11:09:16 AM
My stats below and please tell me what are the best to limit my line cap before 3dB with low rx kick in to get back to 79999K?

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 27064 Kbps, Downstream rate = 81035 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 78171 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.5             15.1
Attn(dB):        12.0            0.0
Pwr(dBm):        12.4            0.9

Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            78250.80        20063.54

                        Bearer 1
INP:            4.00            0.00
INPRein:        4.00            0.00
delay:          3               0
PER:            16.06           0.01
OR:             95.62           0.01
AgR:            95.62   0.01

Bitswap:        0/0             0/0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 13, 2018, 11:10:51 AM
My line is now in the 3dB with INP=48 (no INPREIN=1) club too:

I capped my line at 71M and DLM acted after 4 days. Lets just hope the reduced INP levels remain...  :fingers:

What was your stats before DLM act?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 13, 2018, 02:00:38 PM
Max your line is already Retransmission Low.
I don't think you can trick DLM in to lowering the SNRM target.

If DLM lowers your SNRM to 5dB and increases your sync to 79,999 it will move you to Retransmission High and you will get slower throughput than you do now.

If that happens post here and I will happily recommend a cap to try lower the line to Retransmission Low.
Until then you shouldn't worry about it or obsess over a couple Mb. You sync considerably higher than most already.

I've always suspected that Openreach's DLM takes FEC errors into consideration, as to whether it's worth removing traditional interleaving or not for example.

That's exactly my thoughts. My experience is it only uses FEC figures when deciding to remove interleaving or lower retx from high to low.
i don't believe DLM takes negative action for high FEC, but it may not make positive changes if FEC is working hard.


Quote from: kitz
PS did your rtx_uc figures change?

No change there either. The only noticeable change to any my figures while the line was capped was the FEC's which dropped significantly.
I had the exact same with sticky interleaving on my ECI cabinet. ES were under 100/day for months, well below ILQ green but interleaving would not budge.
Capping the line lowered FEC from circa 10,000/min to just under 1,000/hour and the line returned to fastpath.

I'm not convinced my line will hold retx low unfortunately.
Every single day I have 0 ES/LEFTERS with retx high but so far I've had 33 LEFTERS in the last 12 hours on retx low so it certainly seems makes a difference.
It's no doubt pushing my line which over achieves considerably.
24.6dB attenuation and 1022m long from my last GEA test I do not bad getting 45Mb.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: underzone on August 13, 2018, 05:56:44 PM
What was your stats before DLM act?

Sync 79999 on 3dB with INP=52 and INPREIN=1
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 13, 2018, 06:17:47 PM
Max your line is already Retransmission Low.
I don't think you can trick DLM in to lowering the SNRM target.

If DLM lowers your SNRM to 5dB and increases your sync to 79,999 it will move you to Retransmission High and you will get slower throughput than you do now.

If that happens post here and I will happily recommend a cap to try lower the line to Retransmission Low.
Until then you shouldn't worry about it or obsess over a couple Mb. You sync considerably higher than most already.


Thanks j0hn. Will let u know if my retransmission get higher, I doubt it will be for a while.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 13, 2018, 07:14:00 PM
A small curiosity...
The other 3 lines posted with retx low all have something similar

Quote
   Bearer 0
INP:      47.00      0.00
INPRein:   0.00      0.00
delay:      0      0
PER:      0.00      6.81
OR:      0.01      34.04
AgR:      72467.34   18033.49

         Bearer 1
INP:      4.50      0.00
INPRein:   4.50      0.00
delay:      3      0
PER:      16.06      0.01
OR:      79.68      0.01
AgR:      79.68   0.01

Note the delay on Bearer 1

My line has...

Quote
Bearer 0

INP:            46.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            9.06
OR:             0.01            28.23
AgR:            45632.39        6789.77

                        Bearer 1

INP:            2.50            0.00
INPRein:        2.50            0.00
delay:          0               0
PER:            16.06           0.01
OR:             47.81           0.01
AgR:            47.81   0.01

Does anyone know the significance?
I understood Bearer 1 to only carry Retransmission messages.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: ejs on August 13, 2018, 08:11:37 PM
I understood Bearer 1 to only carry Retransmission messages.

No, it carries all the overhead messages, many of which will be unrelated to retransmission functions.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: bkehoe on August 14, 2018, 04:55:57 PM
Been synced a tad under 80MBit for months with a 4dB SNR target but RETX high (so coming from RETX Low at 6dB to a sub 6dB target hasn't really done anything for me overall)so just decided to cap my line at 65MBit today to see if I can get Re Tx low back again.

Already I can see that I've gone from about 5000 FEC/hour to about 15 so curious how long this takes.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 15, 2018, 01:25:02 PM
What were your ES/LEFTERS like before?
Have any other figures dropped? (particularly rtx figures).
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Archetype486 on August 15, 2018, 01:59:44 PM
I now wish I had posted my stats and finding when I got mine to work as it seems to be helping others.

Well at least the information is out there now.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: bkehoe on August 15, 2018, 05:18:04 PM
What were your ES/LEFTERS like before?
Have any other figures dropped? (particularly rtx figures).

Like 0-1ES per day on the downstream but quite a few on the upstream (~300 a day).
My stats with the cap;
Quote
       VDSL Port Details       Upstream         Downstream
               Line Rate:     20.063 Mbps       64.996 Mbps
    Actual Net Data Rate:     19.999 Mbps       64.997 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:       15.2 dB            6.8 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:      - 2.1 dBm          13.2 dBm
           Receive Power:      -17.3 dBm           1.2 dBm
              Actual INP:        0.0 symbols      51.0 symbols
       Total Attenuation:        0.0 dB          12.1 dB
Attainable Net Data Rate:     23.581 Mbps       80.337 Mbps
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Hitman on August 16, 2018, 06:10:49 PM
Just got my result from doing this procedure on my DGA4132 5 days ago - capped at 15000/60000 and got my DSLstat email saying resync this morning, now InpRein is 0 from 1, results below.

Question: How are you guy's removing your cap, best via command line or a reboot? I don't want to upset the applecart.

Results
Before
Code: [Select]
Max:    Upstream rate = 23537 Kbps, Downstream rate = 73653 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 72240 Kbps
                Down            Up
SNR (dB):        3.1             14.9
Attn(dB):        13.6            0.0
Pwr(dBm):        13.4            3.9

Bearer 0
INP:            54.00           0.00
INPRein:        1.00            0.00

                        Retransmit Counters
rtx_tx:         454             0
rtx_c:          435             0
rtx_uc:         0               0

After
Code: [Select]
Max:    Upstream rate = 23223 Kbps, Downstream rate = 74270 Kbps
Bearer: 0, Upstream rate = 14999 Kbps, Downstream rate = 60000 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
                Down            Up
SNR (dB):        6.4             18.8
Attn(dB):        13.6            0.0
Pwr(dBm):        13.4            3.7

Bearer 0
INP:            48.00           0.00
INPRein:        0.00            0.00

                        Retransmit Counters
rtx_tx:         32              0
rtx_c:          32              0
rtx_uc:         0               0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 16, 2018, 06:21:07 PM
Did any of you who successfully forced retx low notice a considerable drop in any of the below figures?

ES or FEC
rtx_tx, rtx_uc or LEFTERS (from the G.INP tab on DslStats)

It would be good to try collaborate and try narrow down which parameters DLM is interested in for changing retx high/low.

Makes me really miss MDWS  :no:

edit:

Quote from: Hitman
Question: How are you guy's removing your cap, best via command line or a reboot? I don't want to upset the applecart.

I just applied a cap slightly higher than what I can sync at.

For me I set 48000 10000 100000
I usually sync about 45-46Mb but the 48Mb cap ensures I won't sync any higher if the DSLAM reboots and I reconnect before crosstalkers.

Having only a 3dB SNRM means less headroom for such events. If I connect higher than that my ES/LEFTERS increase considerably and DLM drops me to 4dB very quickly.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 16, 2018, 06:24:21 PM
Bring back MDWS please
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Hitman on August 16, 2018, 06:52:12 PM
Did any of you who successfully forced retx low notice a considerable drop in any of the below figures?

ES or FEC
rtx_tx, rtx_uc or LEFTERS (from the G.INP tab on DslStats)

It would be good to try collaborate and try narrow down which parameters DLM is interested in for changing retx high/low.

Makes me really miss MDWS  :no:

edit:

I just applied a cap slightly higher than what I can sync at.

For me I set 48000 10000 100000
I usually sync about 45-46Mb but the 48Mb cap ensures I won't sync any higher if the DSLAM reboots and I reconnect before crosstalkers.

Having only a 3dB SNRM means less headroom for such events. If I connect higher than that my ES/LEFTERS increase considerably and DLM drops me to 4dB very quickly.

Thanks John,

So would you say 20000/73000 would be ok for my line, although I would prefer just to remove any cap in place (thus a power down/remove VDSL cable/wait 30mins reconnect and power up would be the safest thing to do for this?).

I'll have a better indication of differences once I get the full sync back up, although LEFTERs/ES were 0 before and I doubt this will change, 0 now on current sync, some small amount on U/L.

Anyway my full stats before capping the line, i'll post my new stats after a good data population...

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 23537 Kbps, Downstream rate = 73653 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 72240 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        3.1             14.9
Attn(dB):        13.6            0.0
Pwr(dBm):        13.4            3.9

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              243             237
M:              1               1
T:              0               42
R:              10              16
S:              0.1076          0.3781
L:              18893           5374
D:              8               1
I:              254             127
N:              254             254
Q:              8               0
V:              0               0
RxQueue:                80              0
TxQueue:                16              0
G.INP Framing:          18              0
G.INP lookback:         16              0
RRC bits:               0               24
                        Bearer 1
MSGc:           154             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              6.4000          0.0000
L:              40              0
D:              3               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               89486540
OHFErr:         0               176
RS:             272290056               3756773600
RSCorr:         116188          386
RSUnCorr:       0               0
                        Bearer 1
OHF:            22110941                0
OHFErr:         0               0
RS:             221108794               0
RSCorr:         635             0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         454             0
rtx_c:          435             0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         0               0
minEFTR:        72243           0
errFreeBits:    391382839               0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    2094954691              0
Data Cells:     1032067411              0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               161
SES:            0               0
UAS:            28              28
AS:             355150

                        Bearer 0
INP:            54.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            72314.24        20063.54

                        Bearer 1
INP:            4.50            0.00
INPRein:        4.50            0.00
delay:          3               0
PER:            16.06           0.01
OR:             79.68           0.01
AgR:            79.68   0.01

Bitswap:        57249/58428             280/280

Total time = 4 days 2 hours 39 min 38 sec
FEC:            116188          386
CRC:            0               176
ES:             0               161
SES:            0               0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Latest 15 minutes time = 9 min 38 sec
FEC:            112             0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Previous 15 minutes time = 15 min 0 sec
FEC:            228             0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
HostInitRetr:   N/A
FailedRetr:     N/A
Latest 1 day time = 2 hours 39 min 38 sec
FEC:            2520            24
CRC:            0               3
ES:             0               3
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Previous 1 day time = 24 hours 0 sec
FEC:            31565           51
CRC:            0               48
ES:             0               46
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Since Link time = 4 days 2 hours 39 min 9 sec
FEC:            116188          386
CRC:            0               176
ES:             0               161
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 16, 2018, 07:06:16 PM
80000 20000 100000 would effectively remove the cap.
Rebooting would also be fine though.

I'm interested in the changes in figures from before the cap and during the cap.
I want to try identify what figures DLM notices are lower that makes it try retx low.

Figures after the line has gone retx low won't help with that but will still add to the overall pool of data and would be appreciated.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Hitman on August 16, 2018, 07:17:37 PM
80000 20000 100000 would effectively remove the cap.
Rebooting would also be fine though.

I'm interested in the changes in figures from before the cap and during the cap.
I want to try identify what figures DLM notices are lower that makes it try retx low.

Figures after the line has gone retx low won't help with that but will still add to the overall pool of data and would be appreciated.

Ok sure and thanks again, here's my capped data from a day ago /before the resync at 7.42am this morning, the rest /after resync will follow later.....

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 23987 Kbps, Downstream rate = 71350 Kbps
Bearer: 0, Upstream rate = 14999 Kbps, Downstream rate = 60000 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        5.6             18.6
Attn(dB):        13.6            0.0
Pwr(dBm):        13.4            4.1

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              122             237
M:              1               1
T:              0               35
R:              8               16
S:              0.0647          0.5038
L:              16186           4033
D:              8               1
I:              131             127
N:              131             254
Q:              8               0
V:              7               0
RxQueue:                135             0
TxQueue:                27              0
G.INP Framing:          18              0
G.INP lookback:         27              0
RRC bits:               0               24
                        Bearer 1
MSGc:           122             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              8.0000          0.0000
L:              32              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               31185554
OHFErr:         0               88
RS:             4161248720              1090771296
RSCorr:         1916            25
RSUnCorr:       0               0
                        Bearer 1
OHF:            8555019         0
OHFErr:         0               0
RS:             68439657                0
RSCorr:         89              0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         307             0
rtx_c:          307             0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         0               0
minEFTR:        60005           0
errFreeBits:    402187887               0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    2970613809              0
Data Cells:     353045901               0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               223
SES:            0               0
UAS:            65              65
AS:             137413

                        Bearer 0
INP:            55.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            4.42
OR:             0.01            57.84
AgR:            60553.63        15056.99

                        Bearer 1
INP:            2.00            0.00
INPRein:        2.00            0.00
delay:          0               0
PER:            16.06           0.01
OR:             63.75           0.01
AgR:            63.75   0.01

Bitswap:        1080/1138               6/6

Total time = 4 days 12 hours 36 min 10 sec
FEC:            29742           2112
CRC:            0               233
ES:             0               223
SES:            0               0
UAS:            65              65
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           1
HostInitRetr:   1
FailedRetr:     0
Latest 15 minutes time = 6 min 10 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Previous 15 minutes time = 15 min 0 sec
FEC:            1511            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
HostInitRetr:   N/A
FailedRetr:     N/A
Latest 1 day time = 12 hours 36 min 10 sec
FEC:            1718            8
CRC:            0               33
ES:             0               33
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Previous 1 day time = 24 hours 0 sec
FEC:            193             17
CRC:            0               54
ES:             0               54
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
Since Link time = 1 days 14 hours 10 min 11 sec
FEC:            1916            25
CRC:            0               88
ES:             0               88
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
HostInitRetr:   0
FailedRetr:     0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 16, 2018, 11:28:17 PM
Are I getting high retx now on my line?

Bearer 1
INP:            4.00            0.00
INPRein:        4.00            0.00
delay:          3               0
PER:            16.06           0.01
OR:             95.62           0.01
AgR:            95.62   0.01
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: iwish on August 16, 2018, 11:31:48 PM
you need the stats from Bearer 0 not one
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 16, 2018, 11:35:36 PM
Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            78468.97        20063.54
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: johnson on August 17, 2018, 12:33:12 AM
For me I set 48000 10000 100000
I usually sync about 45-46Mb but the 48Mb cap ensures I won't sync any higher if the DSLAM reboots and I reconnect before crosstalkers.

So the settings passed to "xdslctl configure" persist even after a resync? So all that need to be done to make any settings like maxDataRate or snr for those that use it persistent across reboots is to have the xdslctl configure command issued at some point during the boot?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on August 17, 2018, 03:45:12 AM
Quote
I'm interested in the changes in figures from before the cap and during the cap.

I've been thinking about this.  Previously they denied using FEC.  I tried asking about LEFTRS but it was completely glossed over.
The most obvious is probably LEFTRS or rtx_uc yet you have seen no difference in either of those.. nor Err/Secs

I'm still not totally dismissing FEC, but what about the SNRMargin...  eg:   
if (Profile == 3dB) && (SNRM > 5dB) && (Errors < 'x') then reduce retx

I just made up 5dB.  Errors could be LEFTRS/ErrSecs as usual

If it is SNRM, it could explain why capping works not just for retx, but was also able to remove Interleaving.   Openreach doesn't expect people to be able to tweak the Target SNRM anymore... but when we cap we are artificially increasing the SNRM.

Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: bkehoe on August 17, 2018, 09:49:02 AM
So in the early hours of this morning, approx just 36 hours after imposing my cap DLM intervention caused a resync which removed Re Tx High and I'm now back on low. It also appears to have moved me from a 4dB target to a 3dB target SNR finally.
Stats after resync.
Quote
===================================================================================
       VDSL Port Details       Upstream         Downstream
               Line Rate:     20.063 Mbps       64.998 Mbps
    Actual Net Data Rate:     19.999 Mbps       64.999 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        7.1 dB            6.6 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:      - 2.1 dBm          13.2 dBm
           Receive Power:      -17.1 dBm           1.2 dBm
              Actual INP:        0.0 symbols      46.0 symbols
       Total Attenuation:        0.0 dB          12.0 dB
Attainable Net Data Rate:     22.653 Mbps       78.462 Mbps


After removing cap;
Quote
        VDSL Port Details       Upstream         Downstream
               Line Rate:     20.063 Mbps       76.736 Mbps
    Actual Net Data Rate:     19.999 Mbps       76.737 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        7.2 dB            3.4 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:      - 2.1 dBm          13.2 dBm
           Receive Power:      -17.1 dBm           1.1 dBm
              Actual INP:        0.0 symbols      47.0 symbols
       Total Attenuation:        0.0 dB          12.1 dB
Attainable Net Data Rate:     22.641 Mbps       77.313 Mbps


Note I do have an occasional source of interference that reduces my SNR by approx 1dB and sometimes lasts for a day, sometimes for a few weeks so I'm not sure if this is the reason that my attainable (and thus new actual sync speed) is lower than 80MBit or if the reason is because of ReTx low and no INP REIN being switched on. I used to use MDWS but since its demise I've sadly lacked closer scrutiny of my connection.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: bkehoe on August 17, 2018, 09:59:45 AM
Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            78468.97        20063.54

ReTx LOW
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 17, 2018, 10:20:23 AM
I wish my line get ReTx HIGH and change to ReTx LOW with SNR 3dB to get my line back to 79999K on it own by DLM but maybe I should wait longer. :(
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: johnson on August 17, 2018, 02:20:09 PM
Sorry for this second OT post, but I was playing with "xdslctl configure" options last night with a view to placing one in the start up of a zyxel modem.

"xdslctl configure --maxDataRate" clears a lot of other options from the configuration of the modem when issued. To the extent that VDSL as a modulation type becomes disabled, obviously this cant really be the case as the way it has been used by people in this thread would not work. It also clears phyre, but I guess this in an ADSL thing, but also bitswap, sra and trellis.. at least as reported after the command.

So the VDSL lines people have tried this on behave exactly as before after creating the cap? Makes me think very little of the modems chosen settings have any effect at all.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 17, 2018, 02:50:32 PM
bitswap always continues to work as normal.
never had a problem setting maxdatarate it's a command I've played with for a few years.

I dont use "xdslctl configure --maxDataRate" but rather "adsl configure --maxDataRate" but i would expect identical results from both.

It survives all resyncs wether DSLAM rebooting, DLM initiated or user initiated. It only clears after a reboot of the modem.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: underzone on August 17, 2018, 03:12:32 PM
I have now settled on capping my line at 74000 to keep FEC errors nice and low - just 20,000 in the last 24hrs. My BRAS IP profile is now 73.7Mbps.

It does seem daft that BT lower your SNR margin to 3dB to increase line speed, however they then add INPREIN=1 which reduces your IP profile and data throughput massively.

Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 17, 2018, 03:36:32 PM
As long don't let openreach see this thread post otherwise openreach could adjusted DLM to stop people's mess around with cap the line and trying to get low rxt
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on August 17, 2018, 03:53:10 PM
I don't think they'd care so much about us using this method.   What they did not like is people adjusting their Target SNR margin to say 2/3db and then some numpties complaining because their line became unstable at such low rates.   BT made specific mention of people playing with Target SNRM to have an adverse effect on the line.   

This method is in effect increasing the Target SNRm (rather than reducing) to give DLM a nudge.    DLM is now clever enough to know that if the line is unstable to take back what it giveth.

The old method was permanently able to over-ride DLM parameters.  This method just gives the DLM a tap on the shoulder to say "hey I think this line is ok and stable enough to have a better profile...  but you still have full control over it." 
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: kitz on August 17, 2018, 03:55:26 PM
It does seem daft that BT lower your SNR margin to 3dB to increase line speed, however they then add INPREIN=1 which reduces your IP profile and data throughput massively.

It does rather  ???
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: NewtronStar on August 17, 2018, 06:46:37 PM
The capping method worked as Archetytype486 suggested RTX is now low after 2 days with cap in place, INP: has been stuck at 52.00 and also interleaving Depth of 4 for 5 months.
INP: now at 45.00 and interleaved depth 16.

Before capping the sync to 26000 Kbps the FECS per day were 3-4 million, Errored seconds 4 - 7 SNRM 4.8dB, after capping the SNRM rose to 12dB FECS went down to 5000 per day and just 1 errored second in 2 days.

Code: [Select]
adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 6469 Kbps, Downstream rate = 44903 Kbps
Bearer: 0, Upstream rate = 6469 Kbps, Downstream rate = 40000 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        4.7             6.0
Attn(dB):        25.0            0.0
Pwr(dBm):        11.2            0.3

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              138             191
M:              1               1
T:              0               41
R:              8               10
S:              0.1101          0.9423
L:              10684           1715
D:              16              1
I:              147             101
N:              147             202
Q:              16              0
V:              12              0
RxQueue:                27              0
TxQueue:                9               0
G.INP Framing:          18              0
G.INP lookback:         9               0
RRC bits:               0               24
                        Bearer 1
MSGc:           90              -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              10.6667         0.0000
L:              24              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               729254
OHFErr:         2               0
RS:             862036672               2327746
RSCorr:         115685          5
RSUnCorr:       0               0
                        Bearer 1
OHF:            1482645         0
OHFErr:         0               0
RS:             8895502         0
RSCorr:         16              0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         28220423                0
rtx_c:          937             0
rtx_uc:         5               0

                        G.INP Counters
LEFTRS:         25              0
minEFTR:        39989           0
errFreeBits:    14526711                0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    1831866277              0
Data Cells:     12971644                0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             2               0
SES:            0               0
UAS:            19              19
AS:             23819

                        Bearer 0
INP:            45.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            9.69
OR:             0.01            26.40
AgR:            40252.99        6495.02

                        Bearer 1
INP:            2.50            0.00
INPRein:        2.50            0.00
delay:          0               0
PER:            16.06           0.01
OR:             47.81           0.01
AgR:            47.81   0.01

Bitswap:        6760/6760               5/5

Total time = 6 hours 37 min 18 sec
FEC:            115685          5
CRC:            2               0
ES:             2               0
SES:            0               0
UAS:            19              19
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 7 min 18 sec
FEC:            5092            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            6086            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 6 hours 37 min 18 sec
FEC:            115685          5
CRC:            2               0
ES:             2               0
SES:            0               0
UAS:            19              19
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 6 hours 36 min 59 sec
FEC:            115685          5
CRC:            2               0
ES:             2               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >

Thanks Kitizens
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 19, 2018, 11:57:38 AM
Hi,

Noticed my IP Profile is now 74.1 instead of 77.35 even though my Sync is at 79999/19999 and my max Attainable is 82492 and 249595

I have an unlocked Openreach modem, if I cap my line to 64999 and 14999 would this cause the DLM ?

Cheers
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Hitman on August 19, 2018, 12:45:05 PM
Hi,

Noticed my IP Profile is now 74.1 instead of 77.35 even though my Sync is at 79999/19999 and my max Attainable is 82492 and 249595

I have an unlocked Openreach modem, if I cap my line to 64999 and 14999 would this cause the DLM ?

Cheers

If you are on Rtx high then yes, can you post your --stats with the included INP: and INPRein: for Bearer 0 details to see if you have a high/low Rtx...

Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 19, 2018, 12:57:47 PM
If you are on Rtx high then yes, can you post your --stats with the included INP: and INPRein: for Bearer 0 details to see if you have a high/low Rtx...

Code: [Select]
# xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 25699 Kbps, Downstream rate = 82828 Kbps
Bearer: 0, Upstream rate = 14992 Kbps, Downstream rate = 64989 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 8.9 18.7
Attn(dB): 13.9 0.0
Pwr(dBm): 13.3 4.3
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 130 237
M: 1 1
T: 0 35
R: 8 16
S: 0.0638 0.5041
L: 17440 4031
D: 8 1
I: 139 127
N: 139 254
Q: 8 0
V: 6 0
RxQueue: 136 0
TxQueue: 34 0
G.INP Framing: 18 0
G.INP lookback: 31 0
RRC bits: 0 24
Bearer 1
MSGc: 154 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 6.4000 0.0000
L: 40 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 834244
OHFErr: 0 3
RS: 229837160 3424251
RSCorr: 113 0
RSUnCorr: 0 0
Bearer 1
OHF: 229042 0
OHFErr: 0 0
RS: 2289805 0
RSCorr: 3 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 1813066 0
rtx_c: 643 0
rtx_uc: 0 0

G.INP Counters
LEFTRS: 0 0
minEFTR: 64991 0
errFreeBits: 1009654230 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 459767709 0
Data Cells: 8860303 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 168
SES: 0 0
UAS: 106 106
AS: 3679

Bearer 0
INP: 51.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 4.42
OR: 0.01 57.81
AgR: 65489.21 15049.52

Bearer 1
INP: 4.50 0.00
INPRein: 4.50 0.00
delay: 3 0
PER: 16.06 0.01
OR: 79.68 0.01
AgR: 79.68 0.01

Bitswap: 1352/1352 2/2

Total time = 1 days 19 hours 9 min 53 sec
FEC: 3074405 991
CRC: 0 185
ES: 0 168
SES: 0 0
UAS: 106 106
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 9 min 53 sec
FEC: 0 0
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 30 0
CRC: 0 2
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 19 hours 9 min 53 sec
FEC: 2004 164
CRC: 0 40
ES: 0 36
SES: 0 0
UAS: 83 83
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 972475 355
CRC: 0 69
ES: 0 66
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 1 hours 1 min 19 sec
FEC: 113 0
CRC: 0 3
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0

Okay, I have applied the cap but also posted the stats for you mate
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 19, 2018, 01:19:56 PM
Why would you cap the upstream at 14999K? Should be cap at 64000/20000/100000
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 19, 2018, 01:29:53 PM
Why would you cap the upstream at 14999K? Should be cap at 64000/20000/100000

Ahhh okay, wasn't totally sure
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 19, 2018, 02:23:08 PM
You would only need to cap the upstream if that also had retx high. That may result in DLM removing G.INP from the upstream completely for anyone who is fortunate enough to have it.
I'm not too sure about the effect of retx high on upstream throughput though?

I edited a previous post and added this text below but will post it here again for the benefit of anyone who's been following the thread and wishing to try this.

Would anyone who is taking advantage of this advice to lower retransmission level and who runs DslStats spend a couple minutes of your time to contribute to the pool of knowledge.

I'm interested in seeing the following figures before capping your line and during the cap.

ES and FEC
and from the G.INP tab
rtx_tx, rtx_uc and LEFTERS

Snapshots/Screenshots of these graphs would be very much appreciated.
We would like to get some idea what parameters DLM is monitoring when deciding on retx high/low.

DslStats does not routinely gather snapshots of G.INP graphs but clicking the camera icon in the bottom left of DslStats while viewing each graph will take a snapshot of that particular graph.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 19, 2018, 02:42:50 PM
Mine still on retx low on bearer 0 and snr stay at 6.4dB with sync rate 78389k for nearly three days now no DLM act yet on target Snr 3dB
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 19, 2018, 03:10:36 PM
Max DLM will likely take weeks/months before it tries lowering your SNRM.
Your line has been running at full sync on 6dB for months.

I've no idea why you are getting so worked up over 1.6Mb  :no:
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: pooclah on August 19, 2018, 06:27:50 PM
I donít need the re-tx low but in the interest of the experiment Iím happy to give it a go and will be capping my line shortly.

My current stats are:

Code: [Select]
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 25164 Kbps, Downstream rate = 81488 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 4.4 15.3
Attn(dB): 11.8 0.0
Pwr(dBm): 12.7 -0.9
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 162 237
M: 1 1
T: 0 42
R: 8 16
S: 0.0647 0.3781
L: 21128 5374
D: 8 1
I: 171 127
N: 171 254
Q: 8 0
V: 2 0
RxQueue: 136 0
TxQueue: 34 0
G.INP Framing: 18 0
G.INP lookback: 31 0
RRC bits: 0 24
Bearer 1
MSGc: 186 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 5.3333 0.0000
L: 48 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 2383145
OHFErr: 6 1282
RS: 2727330880 4082190
RSCorr: 114770 76517
RSUnCorr: 0 0
Bearer 1
OHF: 54901416 0
OHFErr: 0 0
RS: 658816249 0
RSCorr: 0 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 401992 0
rtx_c: 12107 0
rtx_uc: 29 0

G.INP Counters
LEFTRS: 9 0
minEFTR: 79980 0
errFreeBits: 1075859857 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 2523117061 0
Data Cells: 4050885085 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 3 1133
SES: 0 0
UAS: 20 20
AS: 881875

Bearer 0
INP: 52.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 3.98
OR: 0.01 64.22
AgR: 80244.76 20063.54

Bearer 1
INP: 4.00 0.00
INPRein: 4.00 0.00
delay: 3 0
PER: 16.06 0.01
OR: 95.62 0.01
AgR: 95.62 0.01

Bitswap: 473433/473433 4217/4217

Total time = 1 days 4 hours 58 min 15 sec
FEC: 114770 76517
CRC: 6 1282
ES: 3 1133
SES: 0 0
UAS: 20 20
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 13 min 15 sec
FEC: 31 8
CRC: 0 2
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 9 13
CRC: 0 9
ES: 0 4
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 4 hours 58 min 15 sec
FEC: 720 170
CRC: 0 39
ES: 0 31
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 3547 19606
CRC: 0 142
ES: 0 126
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 10 days 4 hours 57 min 53 sec
FEC: 114770 76517
CRC: 6 1282
ES: 3 1133
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0

My stats are viewable at https://www.pooclah.net/dslstats (https://www.pooclah.net/dslstats)

Unfortunately I donít keep history, donít have time to set it up this evening, and working away Monday to Friday so it wonít happen any time soon.

If anyone is interested they can keep an eye on my stats from the link above.

Kevin
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 19, 2018, 09:15:10 PM
It's very much appreciated unfortunately none of the G.INP stats are snapshot automatically or in the Webserver.

Could you possibly click the camera in the bottom left of each of the G.INP tabs on DslStats?

Once now with a graph full of pre cap stats, then a further once during the cap should suffice.  :hat:
a graph of half and half would be alright too.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 19, 2018, 10:07:20 PM
https://www.pooclah.net/dslstats/

I like this setup how to do this?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: Archetype486 on August 19, 2018, 10:44:53 PM
Would anyone who is taking advantage of this advice to lower retransmission level and who runs DslStats spend a couple minutes of your time to contribute to the pool of knowledge.

I am happy about sharing anything I have. I don't think I have anything before capping my line but I will look through my archives and backups.

I am away from home for the next couple of days but I will see what I have access to remotely.

I have not got around to setting consistent saving of data since MDWS closed down
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: burakkucat on August 19, 2018, 11:03:35 PM
https://www.pooclah.net/dslstats/

I like this setup how to do this?

Make a start by reading through this thread (https://forum.kitz.co.uk/index.php/topic,21237.0.html), Max. There should be enough there to get you going with your own customised version.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 20, 2018, 12:15:14 AM
Make a start by reading through this thread (https://forum.kitz.co.uk/index.php/topic,21237.0.html), Max. There should be enough there to get you going with your own customised version.

Sorry I am thick, don't know how to setup etc..can anyones please explain how to do this step by step in windows 10. I have posted this thread as above.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 20, 2018, 12:08:49 PM
Max DLM will likely take weeks/months before it tries lowering your SNRM.
Your line has been running at full sync on 6dB for months.

I've no idea why you are getting so worked up over 1.6Mb  :no:

My router has been resync just confirmed by dslstats alert email at 11:34am and it changed from the upstream to reduced 19999K to 17745K and downstream reduced from 78389K to 74022K and reduced upstream SNR from 15.1dB to 7.6dB but the downstream SNR went up from 6.4dB to 7.3dB. Interleave Depth annd INP are unchanged.

Code: [Select]
DSLAM type / SW version: BDCM:0xa48c (164.140) / v0xa48c
Modem/router firmware:  AnnexA version - A2pv6F039g1.d24m
DSL mode:                VDSL2 Profile 17a
Status:                  Showtime
Uptime:                  0 hour 31 min 36 sec
Resyncs:                1 (since 20 Aug 2018 01:08:14)

Downstream Upstream
Line attenuation (dB):  12.0 0.0
Signal attenuation (dB): Not available on VDSL2
Connection speed (kbps): 74022 17745
SNR margin (dB):        7.3 7.6
Power (dBm):            12.5 1.3
Interleave depth:        8 1
INP:                    49.00 0
G.INP:                  Enabled Not enabled
Vectoring status:        5 (VECT_UNCONFIGURED)

RSCorr/RS (%):          0.7344 0.0000
RSUnCorr/RS (%):        0.0000 0.0000
ES/hour:                1.62 4.13

Code: [Select]
Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            6.91
OR:             0.01            28.92
AgR:            74097.89        17774.56

                        Bearer 1
INP:            4.50            0.00
INPRein:        4.50            0.00
delay:          3               0
PER:            16.06           0.01
OR:             79.68           0.01
AgR:            79.68   0.01

Bitswap:        1432/1433               469/471

My throughput are very poor via ethernet don't know why it capped at 50/16 from 74/19

http://www.speedtest.net/result/7566551392.png

Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 20, 2018, 02:16:43 PM
I managed to force DLM to removed banded on my line via telnet to force it to removed it off. It's has successfully removed it off.

Cheesy (leave my line alone DLM)

Mode    VDSL2
Traffic Type    PTM
Status    Up
Link Power State    L0
 
     Downstream    Upstream
Line Coding (Trellis)    On    On
SNR Margin (dB)    6.4    15.1
Attenuation (dB)    12.0    0.0
Output Power (dBm)    12.5    0.9
Attainable Rate (Kbps)    79145    26598
Rate (Kbps)            78343    19999
Throughput speed:       73Mbps  18Mbps

 http://www.speedtest.net/result/7566780518.png

For your connection, the acceptable range of speedsis 40 Mbps-75.75 Mbps .
 Additional Information:
 IP Profile for your line is - 75.75 Mbps

Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            78423.04        20063.54

                        Bearer 1
INP:            4.00            0.00
INPRein:        4.00            0.00
delay:          3               0
PER:            16.06           0.01
OR:             95.62           0.01
AgR:            95.62   0.01

Bitswap:        0/0             0/0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: ejs on August 20, 2018, 06:43:48 PM
It wasn't banded, nothing you did removed any banding. All you did was resync the modem and got back to some more usual stats.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 20, 2018, 06:47:15 PM
Plusnet found a fault on the line and sent off to BT Wholesale. As GEA Test still come back test fail.

Code: [Select]
Test Outcome Fail
Test Outcome Code GTC_FTTC_SERVICE_1625
Description Impairment in copper joint detected most likely in local network. Please continue to submit a trouble report
Main Fault Location CE
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: ejs on August 20, 2018, 06:56:33 PM
Yes, I saw, congratulations, I assume you wanted to have a fault.

That still doesn't mean that every single change to your dsl stats is the DLM's doing.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 20, 2018, 06:58:55 PM
Oh dear me! Retrain 200000  :'( DLM more likely to banded the line overnight  :'( :'(
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 21, 2018, 01:49:36 AM
DLM has resync my line. Both now enabled on interleave depth at 8/8 INP 47/47 but Bearer 0 are now re-tx high on downstream

 
 Additional Information:
 IP Profile for your line is - 71.67 Mbps (91.96% to the sync rate 77941Kbps due to re-tx high on downstream)


Code: [Select]
Connection stats

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 29216 Kbps, Downstream rate = 78721 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 77941 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.4             11.9
Attn(dB):        11.9            0.0
Pwr(dBm):        12.5            0.9

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              -6
B:              243             97
M:              1               1
T:              0               0
R:              10              8
S:              0.0997          0.1554
L:              20384           5457
D:              8               8
I:              254             106
N:              254             106
Q:              8               8
V:              0               2
RxQueue:                80              39
TxQueue:                20              13
G.INP Framing:          18              18
G.INP lookback:         20              13
RRC bits:               24              24
                        Bearer 1
MSGc:           186             58
B:              0               0
M:              2               2
T:              2               2
R:              16              16
S:              5.3333          16.0000
L:              48              16
D:              3               1
I:              32              32
N:              32              32
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               0
OHFErr:         0               0
RS:             43047528                1957504
RSCorr:         5               5
RSUnCorr:       0               0
                        Bearer 1
OHF:            67112           67325
OHFErr:         0               0
RS:             804607          269301
RSCorr:         1               2
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         129368          4
rtx_c:          9               1577
rtx_uc:         0               79134

                        G.INP Counters
LEFTRS:         0               24
minEFTR:        77931           19997
errFreeBits:    1281555         391302483

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    161577627               0
Data Cells:     1094583         0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               0
SES:            0               0
UAS:            26              26
AS:             1079

                        Bearer 0
INP:            47.00           47.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            0.00
OR:             0.01            0.01
AgR:            78021.15        20102.08

                        Bearer 1
INP:            4.00            4.00
INPRein:        4.00            4.00
delay:          3               0
PER:            16.06           16.06
OR:             95.62           31.87
AgR:            95.62   31.87

Bitswap:        1/1             1/1

Total time = 18 min 25 sec
FEC:            5               5
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            26              26
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 3 min 25 sec
FEC:            1               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            4               5
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            26              26
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 18 min 25 sec
FEC:            5               5
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            26              26
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 17 min 57 sec
FEC:            5               5
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: twinkletoes on August 23, 2018, 03:15:05 PM
After banding my line to 60000/15000 for a few days, here's my latest stats with a cap of 75000 on DS...

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 27792 Kbps, Downstream rate = 78555 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 74997 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        5.5             15.5
Attn(dB):        15.6            0.0
Pwr(dBm):        13.0            6.9

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              162             237
M:              1               1
T:              0               42
R:              8               16
S:              0.0691          0.3781
L:              19807           5374
D:              8               1
I:              171             127
N:              171             254
Q:              8               0
V:              2               0
RxQueue:                128             0
TxQueue:                32              0
G.INP Framing:          18              0
G.INP lookback:         31              0
RRC bits:               0               24
                        Bearer 1
MSGc:           154             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              6.4000          0.0000
L:              40              0
D:              3               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               4136659
OHFErr:         0               214
RS:             3850163136              1696433
RSCorr:         4428            15067
RSUnCorr:       0               0
                        Bearer 1
OHF:            4154957         0
OHFErr:         0               0
RS:             41549572                0
RSCorr:         73              0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         7370            0
rtx_c:          434             0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         0               0
minEFTR:        74988           0
errFreeBits:    76349339                0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    1035463588              0
Data Cells:     7800535         0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               180
SES:            0               0
UAS:            0               0
AS:             66749

                        Bearer 0
INP:            52.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            75227.56        20063.54

                        Bearer 1
INP:            4.50            0.00
INPRein:        4.50            0.00
delay:          3               0
PER:            16.06           0.01
OR:             79.68           0.01
AgR:            79.68   0.01

Bitswap:        2740/2740               491/491

Total time = 18 hours 32 min 29 sec
FEC:            4428            15067
CRC:            0               214
ES:             0               180
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 2 min 29 sec
FEC:            1               0
CRC:            0               1
ES:             0               1
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            31              3
CRC:            0               2
ES:             0               2
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 18 hours 32 min 29 sec
FEC:            4428            15067
CRC:            0               214
ES:             0               180
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 18 hours 32 min 29 sec
FEC:            4428            15067
CRC:            0               214
ES:             0               180
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >

Seems to have nudged the DLM to try a lower SNRm while increasing the max attainable :)

Steve
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on August 23, 2018, 03:47:24 PM
Steve

Your line still on high retx

Code: [Select]
Bearer 0
INP:            52.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            75227.56        20063.54
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 23, 2018, 04:05:45 PM
Steve

Your line still on high retx

Code: [Select]
Bearer 0
INP:            52.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            75227.56        20063.54

Indeed it is, but I think he's pointing out that it nudged DLM in to lowering the SNRM target from 6dB to 5dB or from 5dB to 4dB (I can't work out which from the attainable and actual SNRM shown).

I believe (could be wrong) DLM will try retx high first when lowering the target SNRM. If not always it does most of the time.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: pooclah on August 25, 2018, 01:11:16 PM
Success

Code: [Select]
Bearer 0
INP: 48.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 3.98
OR: 0.01 64.22
AgR: 60083.56 20063.54

Apologies j0hn I didnít see your request until after Iíd applied the cap.  I did grab a set of images a few hours after the cap & another set this morning after re-tx high was removed.

If they are of any use you can view them here

https://www.pooclah.net/ginp/ (https://www.pooclah.net/ginp/)

Kevin
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 25, 2018, 03:41:05 PM
You caught the change from before cap to during cap.

There was a decent drop in rtx_tx and LEFTERS with the cap on.
rtx_uc was pretty much nil pre-cap.

Cheers Kevin, much appreciated!



Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: pooclah on August 25, 2018, 04:06:35 PM

No problem.

I've just removed the cap and I'll do another set in a couple of days for comparison.

Kevin
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: pooclah on August 27, 2018, 04:10:18 PM

Iíve added todays G.inp data while on retx low in case itís of use to anyone.

https://www.pooclah.net/ginp/27-08-18.htm (https://www.pooclah.net/ginp/27-08-18.htm)

Now to see if it holds.

Kevin
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 29, 2018, 04:30:11 PM
How long roughly does the DLM take after applying the cap, been about 8 days now
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 29, 2018, 04:50:59 PM
In my experience it can be 8-11 days.
If you were overly cautious your cap may not be enough.

What cap did you set?
Sorry if already mentioned in the thread I'm on my phone atm.

I would advise waiting another 3 days before changing anything anyway.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 29, 2018, 05:23:28 PM
In my experience it can be 8-11 days.
If you were overly cautious your cap may not be enough.

What cap did you set?
Sorry if already mentioned in the thread I'm on my phone atm.

I would advise waiting another 3 days before changing anything anyway.

Set my cap to 64999 19999 from 79999 19999
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 29, 2018, 07:08:24 PM
Sounds sufficient. Good luck keep us posted.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 29, 2018, 07:09:10 PM
Sounds sufficient. Good luck keep us posted.

Yeah I will:) cheers
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: bkehoe on August 29, 2018, 07:50:32 PM
It took less than 48 hours for me and I think another person here too. Maybe still too many errors?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: JordanBlack68 on August 30, 2018, 11:14:09 AM
Update:

It worked after 9 days !

Old Stats:

Code: [Select]
# xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 25699 Kbps, Downstream rate = 82828 Kbps
Bearer: 0, Upstream rate = 14992 Kbps, Downstream rate = 64989 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 8.9 18.7
Attn(dB): 13.9 0.0
Pwr(dBm): 13.3 4.3
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 130 237
M: 1 1
T: 0 35
R: 8 16
S: 0.0638 0.5041
L: 17440 4031
D: 8 1
I: 139 127
N: 139 254
Q: 8 0
V: 6 0
RxQueue: 136 0
TxQueue: 34 0
G.INP Framing: 18 0
G.INP lookback: 31 0
RRC bits: 0 24
Bearer 1
MSGc: 154 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 6.4000 0.0000
L: 40 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 834244
OHFErr: 0 3
RS: 229837160 3424251
RSCorr: 113 0
RSUnCorr: 0 0
Bearer 1
OHF: 229042 0
OHFErr: 0 0
RS: 2289805 0
RSCorr: 3 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 1813066 0
rtx_c: 643 0
rtx_uc: 0 0

G.INP Counters
LEFTRS: 0 0
minEFTR: 64991 0
errFreeBits: 1009654230 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 459767709 0
Data Cells: 8860303 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 168
SES: 0 0
UAS: 106 106
AS: 3679

Bearer 0
INP: 51.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 4.42
OR: 0.01 57.81
AgR: 65489.21 15049.52

Bearer 1
INP: 4.50 0.00
INPRein: 4.50 0.00
delay: 3 0
PER: 16.06 0.01
OR: 79.68 0.01
AgR: 79.68 0.01

Bitswap: 1352/1352 2/2

Total time = 1 days 19 hours 9 min 53 sec
FEC: 3074405 991
CRC: 0 185
ES: 0 168
SES: 0 0
UAS: 106 106
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 9 min 53 sec
FEC: 0 0
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 30 0
CRC: 0 2
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 19 hours 9 min 53 sec
FEC: 2004 164
CRC: 0 40
ES: 0 36
SES: 0 0
UAS: 83 83
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 972475 355
CRC: 0 69
ES: 0 66
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 1 hours 1 min 19 sec
FEC: 113 0
CRC: 0 3
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0


New Stats:

Code: [Select]
# xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 26025 Kbps, Downstream rate = 85976 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 4.5 15.0
Attn(dB): 13.9 0.0
Pwr(dBm): 13.1 4.4
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 130 237
M: 1 1
T: 0 42
R: 8 16
S: 0.0518 0.3781
L: 21468 5374
D: 16 1
I: 139 127
N: 139 254
Q: 16 0
V: 14 0
RxQueue: 60 0
TxQueue: 20 0
G.INP Framing: 18 0
G.INP lookback: 20 0
RRC bits: 0 24
Bearer 1
MSGc: 186 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 5.3333 0.0000
L: 48 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 424588
OHFErr: 0 2
RS: 129537552 644959
RSCorr: 73 0
RSUnCorr: 0 0
Bearer 1
OHF: 104902 0
OHFErr: 0 0
RS: 1258086 0
RSCorr: 0 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 1814529 0
rtx_c: 1 0
rtx_uc: 0 0

G.INP Counters
LEFTRS: 0 0
minEFTR: 79982 0
errFreeBits: 2056083 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 259175229 0
Data Cells: 14623119 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 2
SES: 0 0
UAS: 23 23
AS: 1686

Bearer 0
INP: 48.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 3.98
OR: 0.01 64.22
AgR: 80614.82 20063.54

Bearer 1
INP: 4.00 0.00
INPRein: 4.00 0.00
delay: 3 0
PER: 16.06 0.01
OR: 95.62 0.01
AgR: 95.62 0.01

Bitswap: 327/327 0/0

Total time = 28 min 29 sec
FEC: 73 0
CRC: 0 2
ES: 0 2
SES: 0 0
UAS: 23 23
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 13 min 29 sec
FEC: 41 0
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 32 0
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 23 23
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 28 min 29 sec
FEC: 73 0
CRC: 0 2
ES: 0 2
SES: 0 0
UAS: 23 23
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 28 min 5 sec
FEC: 73 0
CRC: 0 2
ES: 0 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on August 30, 2018, 12:28:12 PM
It took less than 48 hours for me and I think another person here too. Maybe still too many errors?

48 hours definitely isn't the norm and I would advise anyone else to wait 11 days before increasing any cap to lower errors further.

The 1st time DLM takes negative action on a line (say applying interleaving) it may remove that action in 48 hours (return the line to fastpath in that case).

The next time DLM takes that action (interleaving) it would take longer to remove this as they use the "doubler" method.
Though in my experience it's double double as it jumps from 2 days to remove DLM actions to around 8 days (8-11 days in my experience).

If a line doesn't drop to retx low within a few days my advice would be don't increase the cap to lower errors but wait the full 11 days first.

Update:

It worked after 9 days !

Excellent news!
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: johnson on September 01, 2018, 05:53:06 AM
I can maybe be a control for high FEC errors. I am on my second go of capping to initially get from 4db to 3db target, having had 3db for ~6 months+ and losing it after a several prolonged noise problems, but no harm in seeing how long retx low would stick, if I ever get there. Initially capped too high and although single digit CRCs and LEFTRS had the line drop, so now with lower cap:

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 1181 Kbps, Downstream rate = 27612 Kbps
Bearer: 0, Upstream rate = 1181 Kbps, Downstream rate = 19496 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        10.3            6.7
Attn(dB):        34.3            0.0
Pwr(dBm):        9.3             10.4

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              163             31
M:              1               1
T:              0               54
R:              8               0
S:              0.0000          0.8477
L:              5179            302
D:              2               1
I:              172             32
N:              172             32
Q:              2               0
V:              1               0
RxQueue:                130             0
TxQueue:                26              0
G.INP Framing:          18              0
G.INP lookback:         26              0
RRC bits:               0               24
                        Bearer 1
MSGc:           90              -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              10.6667         0.0000
L:              24              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               824589
OHFErr:         0               206
RS:             2908285704              387708
RSCorr:         256547          0
RSUnCorr:       0               0
                        Bearer 1
OHF:            12073463                0
OHFErr:         1               0
RS:             72440405                0
RSCorr:         332             0
RSUnCorr:       1               0

                        Retransmit Counters
rtx_tx:         94656525                0
rtx_c:          30624           0
rtx_uc:         1               0

                        G.INP Counters
LEFTRS:         3               0
minEFTR:        19495           0
errFreeBits:    57733410                0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    2975636696              0
Data Cells:     665464915               0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               154
SES:            0               0
UAS:            297             297
AS:             193984

                        Bearer 0
INP:            54.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            11.48
OR:             0.01            22.28
AgR:            19675.60        1203.29

                        Bearer 1
INP:            2.50            0.00
INPRein:        2.50            0.00
delay:          0               0
PER:            16.06           0.01
OR:             47.81           0.01
AgR:            47.81   0.01

Bitswap:        45340/51908             1/1

Total time = 2 days 6 hours 56 sec
FEC:            279081          0
CRC:            0               206
ES:             0               154
SES:            0               0
UAS:            297             297
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 56 sec
FEC:            2               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            1637            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 6 hours 56 sec
FEC:            46870           0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            84447           0
CRC:            0               161
ES:             0               120
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 2 days 5 hours 53 min 3 sec
FEC:            256547          0
CRC:            0               206
ES:             0               154
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

Code: [Select]
Downstream Upstream
General
rtx_tx          94656525        0               
rtx_c            30624            0               
rtx_uc          1                0               
LEFTRS          3                0               
minEFTR          19495            0               
errFreeBits      57733410        0               
Bearer 0
RxQueue          130              0               
TxQueue          26              0               
G.INP Framing    18              0               
G.INP Lookback  26              0               
RRC Bits        0                24             
Interleave depth 2                1               
INP              54.00            0.00           
INPRein          1.00            0.00           
Delay            0                0               
Bearer 1
Interleave depth 1                0               
INP              2.50            0.00           
INPRein          2.50            0.00           
Delay            0                0               

Am I correct in assuming that my upstream CRCs will not count to the DLMs view of my downstream stability?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: johnson on September 10, 2018, 02:28:03 AM
About ready to throw in the towel, 11 days now and no resync:

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 1181 Kbps, Downstream rate = 26833 Kbps
Bearer: 0, Upstream rate = 1181 Kbps, Downstream rate = 19496 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        9.6             6.7
Attn(dB):        34.3            0.0
Pwr(dBm):        9.3             10.4

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              163             31
M:              1               1
T:              0               54
R:              8               0
S:              0.0000          0.8477
L:              5179            302
D:              2               1
I:              172             32
N:              172             32
Q:              2               0
V:              1               0
RxQueue:                130             0
TxQueue:                26              0
G.INP Framing:          18              0
G.INP lookback:         26              0
RRC bits:               0               24
                        Bearer 1
MSGc:           90              -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              10.6667         0.0000
L:              24              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               275289
OHFErr:         17              563
RS:             1499631660              4089321
RSCorr:         2335431         0
RSUnCorr:       0               0
                        Bearer 1
OHF:            59715735                0
OHFErr:         2               0
RS:             358294039               0
RSCorr:         1657            0
RSUnCorr:       2               0

                        Retransmit Counters
rtx_tx:         94770499                0
rtx_c:          130382          0
rtx_uc:         99              0

                        G.INP Counters
LEFTRS:         36              0
minEFTR:        19495           0
errFreeBits:    285010918               0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    1600911433              0
Data Cells:     3390935407              0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             7               437
SES:            0               0
UAS:            297             297
AS:             959452

                        Bearer 0
INP:            54.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            11.48
OR:             0.01            22.28
AgR:            19675.60        1203.29

                        Bearer 1
INP:            2.50            0.00
INPRein:        2.50            0.00
delay:          0               0
PER:            16.06           0.01
OR:             47.81           0.01
AgR:            47.81   0.01

Bitswap:        222371/254367           1/1

Total time = 11 days 2 hours 38 min 44 sec
FEC:            2357965         0
CRC:            17              563
ES:             7               437
SES:            0               0
UAS:            297             297
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 8 min 44 sec
FEC:            1625            0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            68              0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 2 hours 38 min 44 sec
FEC:            17980           0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            284088          0
CRC:            4               14
ES:             1               13
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 11 days 2 hours 30 min 51 sec
FEC:            2335431         0
CRC:            17              563
ES:             7               437
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
 

Code: [Select]
Downstream Upstream
General
rtx_tx          94770532        0               
rtx_c            130415          0               
rtx_uc          99              0               
LEFTRS          36              0               
minEFTR          19495            0               
errFreeBits      285037647        0               
Bearer 0
RxQueue          130              0               
TxQueue          26              0               
G.INP Framing    18              0               
G.INP Lookback  26              0               
RRC Bits        0                24             
Interleave depth 2                1               
INP              54.00            0.00           
INPRein          1.00            0.00           
Delay            0                0               
Bearer 1
Interleave depth 1                0               
INP              2.50            0.00           
INPRein          2.50            0.00           
Delay            0                0               

So 7 ES after 11 days seem the best I can hope for, so I either FECs matter or the 99 rtx_uc & 36 LEFTRS are too high still.

Hmm.. cant hurt to leave it a few more days I guess.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: twinkletoes on September 13, 2018, 01:43:36 PM
ReTX Low and G.INP on DS and US :) Let's see how long it lasts...

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 30256 Kbps, Downstream rate = 77213 Kbps
Bearer: 0, Upstream rate = 14999 Kbps, Downstream rate = 60000 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        10.5            17.0
Attn(dB):        15.6            0.0
Pwr(dBm):        13.0            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              -6
B:              178             211
M:              1               1
T:              0               0
R:              10              16
S:              0.0950          0.4489
L:              15922           4063
D:              16              4
I:              189             228
N:              189             228
Q:              16              4
V:              2               1
RxQueue:                33              27
TxQueue:                11              9
G.INP Framing:          18              18
G.INP lookback:         11              9
RRC bits:               24              24
                        Bearer 1
MSGc:           122             58
B:              0               0
M:              2               2
T:              2               2
R:              16              16
S:              8.0000          16.0000
L:              32              16
D:              1               1
I:              32              32
N:              32              32
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               0
OHFErr:         0               0
RS:             370067744               1273091
RSCorr:         338             184
RSUnCorr:       0               0
                        Bearer 1
OHF:            549105          551224
OHFErr:         0               0
RS:             4392840         2204896
RSCorr:         1               2
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         26771           54
rtx_c:          48              236
rtx_uc:         0               13964

                        G.INP Counters
LEFTRS:         0               5
minEFTR:        59987           14992
errFreeBits:    8070287         9905964

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    1017684008              0
Data Cells:     2011607         0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               0
SES:            0               0
UAS:            0               0
AS:             8821

                        Bearer 0
INP:            48.00           46.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            0.00
OR:             0.01            0.01
AgR:            60083.56        15052.70

                        Bearer 1
INP:            2.00            4.00
INPRein:        2.00            4.00
delay:          0               0
PER:            16.06           16.06
OR:             63.75           31.87
AgR:            63.75   31.87

Bitswap:        503/503         0/0

Total time = 2 hours 27 min 1 sec
FEC:            338             184
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 12 min 1 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 2 hours 27 min 1 sec
FEC:            338             184
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 2 hours 26 min 59 sec
FEC:            338             184
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >

Steve
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on September 13, 2018, 05:22:34 PM
Any reason you have both upstream/downstream heavily capped if both are already on the optimum profile?

With Retx High I had 1 single LEFTERS per day (caused by a uvb bulb/ballast for my reptile light turning on at 7:59am everyday, so I discount this usually and say 0).

Since going Retx Low this increased to about 100 per day. In the last couple weeks I've been getting nearer 400-500 LEFTERS per day and the line is holding great at 3dB retx Low.

Seems it might need a kick (the cap) you get the line down to ReTx Low for many, but it holds there pretty good.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on September 13, 2018, 09:14:14 PM
@ jOhn

Shall I applied the cap to 64999 19999 from 78044 19999 eg: adsl configure --maxDataRate 64999 19999 100000 because I want my line back to 79999 19999 with snr 3dB with retx low. (will it work if I applied the cap to force DLM to get target 3dB snr?)

Here is my latest stats:

Code: [Select]
adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    1
Last initialization procedure status:   0
Max:    Upstream rate = 28054 Kbps, Downstream rate = 78605 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 78044 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.4             15.8
Attn(dB):        12.0            0.0
Pwr(dBm):        12.5            1.3

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              243             237
M:              1               1
T:              0               42
R:              10              16
S:              0.0996          0.3781
L:              20411           5374
D:              8               1
I:              254             127
N:              254             254
Q:              8               0
V:              0               0
RxQueue:                63              0
TxQueue:                21              0
G.INP Framing:          18              0
G.INP lookback:         21              0
RRC bits:               0               24
                        Bearer 1
MSGc:           186             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              5.3333          0.0000
L:              48              0
D:              3               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               1625482
OHFErr:         0               1677
RS:             2436168552              3278715
RSCorr:         45578           11088
RSUnCorr:       0               0
                        Bearer 1
OHF:            117366038               0
OHFErr:         0               0
RS:             1408391720              0
RSCorr:         2027            0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         140060          0
rtx_c:          10542           0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         29              0
minEFTR:        78041           0
errFreeBits:    2283327245              0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    3766740091              0
Data Cells:     1570918703              0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             10              1482
SES:            10              0
UAS:            36              26
AS:             1885500

                        Bearer 0
INP:            49.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            78124.49        20063.54

                        Bearer 1
INP:            4.00            0.00
INPRein:        4.00            0.00
delay:          3               0
PER:            16.06           0.01
OR:             95.62           0.01
AgR:            95.62   0.01

Bitswap:        1264/1264               271/271

Total time = 23 days 9 hours 54 min 9 sec
FEC:            208130          11962
CRC:            5925            1831
ES:             10              1482
SES:            10              0
UAS:            36              26
LOS:            1               0
LOF:            6               0
LOM:            0               0
Latest 15 minutes time = 9 min 9 sec
FEC:            9               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            34              0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 9 hours 54 min 9 sec
FEC:            524             95
CRC:            0               19
ES:             0               18
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            1695            380
CRC:            0               57
ES:             0               51
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 21 days 19 hours 44 min 59 sec
FEC:            45578           11088
CRC:            0               1677
ES:             0               1353
SES:            0               0

Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: j0hn on September 14, 2018, 12:27:02 AM
You're already on retx low.
DLM may be programmed to not lower the SNRM if you are that close to 80Mb.

If it lowers the SNRM target to 5dB for you it would go to retx high and your throughput would be even less than it is now.

If you really want to try "nudge" DLM then try a 69999 19999 cap.
I don't know if it will work but you never know.

As you have the line capped if DLM does resync the line to lower the target SNRM then you won't see the sync increase.
You should see the max attainable going up though.

IF it does lower your SNRM target to 5dB it will almost certainly put the line on ReTx High.
Post here if you see any changes. It can take 8-11 days if it does actually work.

Don't worry about it if it doesn't work max as you already have a very high sync compared to many other members. You're only a tiny bit under full sync but it doesn't hurt to try  :)
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: dee.jay on September 14, 2018, 08:08:36 AM
Yeah, even though 78000+ is a great rate, knowing I had 3dB to play with, I'd want to try and bump it to 79999 as well :D
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: adslmax on September 14, 2018, 10:46:38 AM
Thanks @ jOhn but I think it best to leave it alone. Too risky for high retx and lower ip profile, don't want that.
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: twinkletoes on September 14, 2018, 10:08:57 PM
Any reason you have both upstream/downstream heavily capped if both are already on the optimum profile?

The reason for that was to try and keep FEC's low, but then my 8800AXL V1 went funny and refused to give out IP addresses. But after a reboot, all is well.

Here's 24hr stats with no cap applied, FEC's are not too bad...

Code: [Select]
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 28397 Kbps, Downstream rate = 75184 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 74091 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.3             11.8
Attn(dB):        15.5            0.0
Pwr(dBm):        13.0            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           -6              -6
B:              243             97
M:              1               1
T:              0               0
R:              10              8
S:              0.1049          0.1554
L:              19377           5457
D:              8               8
I:              254             106
N:              254             106
Q:              8               8
V:              0               2
RxQueue:                60              39
TxQueue:                20              13
G.INP Framing:          18              18
G.INP lookback:         20              13
RRC bits:               24              24
                        Bearer 1
MSGc:           154             58
B:              0               0
M:              2               2
T:              2               2
R:              16              16
S:              6.4000          16.0000
L:              40              16
D:              3               1
I:              32              32
N:              32              32
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0

                        Counters
                        Bearer 0
OHF:            0               0
OHFErr:         0               0
RS:             3349626040              1780326
RSCorr:         5547            17390
RSUnCorr:       0               0
                        Bearer 1
OHF:            5488498         267811
OHFErr:         0               0
RS:             54884980                567928
RSCorr:         169             131
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         27543           731
rtx_c:          604             1090
rtx_uc:         0               23826

                        G.INP Counters
LEFTRS:         2               17
minEFTR:        74094           20003
errFreeBits:    99619504                43779315

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    3971142867              0
Data Cells:     82874626                0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               0
SES:            0               0
UAS:            0               0
AS:             88173

                        Bearer 0
INP:            49.00           47.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            0.00
OR:             0.01            0.01
AgR:            74166.78        20102.08

                        Bearer 1
INP:            4.50            4.00
INPRein:        4.50            4.00
delay:          3               0
PER:            16.06           16.06
OR:             79.68           31.87
AgR:            79.68   31.87

Bitswap:        5069/5069               519/519

Total time = 1 days 29 min 33 sec
FEC:            5547            17390
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 14 min 33 sec
FEC:            41              11
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            12              28
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 29 min 33 sec
FEC:            53              39
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            5494            17351
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 1 days 29 min 31 sec
FEC:            5547            17390
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >

Steve
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: michty_me on January 29, 2019, 10:07:11 AM
Morning everyone,

I'm looking to do this to my line to see if I can get it to switch to Retx low.
Would a 60Mbps cap be sufficient on a line synching at 70.5Mbps or would you cap a little lower?
Title: Re: Openreach FTTC Target SNR 3dB reduced Bras IP Profile to 92.64%
Post by: michty_me on February 09, 2019, 06:41:37 PM
I limited the line to 50mbps and Retx low was in place on day 3.