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Author Topic: DLM Reset  (Read 1437 times)

Shakermaker

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Re: DLM Reset
« Reply #15 on: September 23, 2018, 09:12:44 AM »

Well did a resync last night when my attainable went up and now syncing at 50Mbps :)

SNR dropped massively this morning so will see how it goes,
Stats recorded 23 Sep 2018 08:10:13

DSLAM type / SW version:   IFTN:0xd086 (208.134) / v0xd086
Modem/router firmware:     AnnexA version - A2pv6F039g1.d24m
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     11 hours 35 min 8 sec
Resyncs:                   0 (since 23 Sep 2018 07:29:09)
         
            Downstream   Upstream
Line attenuation (dB):     18.9      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   50042      5942
SNR margin (dB):           4.3      5.2
Power (dBm):               13.6      -0.4
Interleave depth:          1      1
INP:                       0      0
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             0.2343      0.0057
RSUnCorr/RS (%):           0.0276      0.0000
ES/hour:                   2560      41.9
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Shakermaker

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Re: DLM Reset
« Reply #16 on: September 24, 2018, 08:59:30 PM »

Oh dear this doesn't look good :(

Can anyone shed some light on the below?

Stats recorded 24 Sep 2018 19:58:16

DSLAM type / SW version:   IFTN:0xd086 (208.134) / v0xd086
Modem/router firmware:     AnnexA version - A2pv6F039g1.d24m
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     16 hours 16 min 26 sec
Resyncs:                   1 (since 23 Sep 2018 18:48:12)
         
            Downstream   Upstream
Line attenuation (dB):     18.8      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   44026      5889
SNR margin (dB):           6.1      6.1
Power (dBm):               13.5      -0.3
Interleave depth:          861      1
INP:                       3.00      0
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             0.9555      0.0280
RSUnCorr/RS (%):           0.0002      0.0000
ES/hour:                   488      2391
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dee.jay

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Re: DLM Reset
« Reply #17 on: September 24, 2018, 09:27:13 PM »

I didn't think ECI cabs supported xdB hence assume 6dB is the target?
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burakkucat

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Re: DLM Reset
« Reply #18 on: September 24, 2018, 09:36:32 PM »

I didn't think ECI cabs supported xdB hence assume 6dB is the target?

Yes, correct.
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Shakermaker

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Re: DLM Reset
« Reply #19 on: September 24, 2018, 09:37:39 PM »

It's actually been 4db for a day or so until about 30 minutes before my post it's the interleave depth I'm curious about

Sent from my Pixel 2 XL using Tapatalk

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burakkucat

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Re: DLM Reset
« Reply #20 on: September 24, 2018, 09:57:21 PM »

It's actually been 4db for a day or so . . .

You circuit synchronised with the target SNRM of 6 dB, then one (or more) nearby crosstalker(s) "appeared" depressing your SNRM.

Quote
. . . it's the interleave depth I'm curious about

Hmm . . . From 1 to 861 is a large jump.  :-\
« Last Edit: September 24, 2018, 10:04:47 PM by burakkucat »
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kitz

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Re: DLM Reset
« Reply #21 on: September 24, 2018, 10:35:38 PM »

INP: 3.00 is the important figure.   This is low interleave/error protection.   
I can only assume that running the line at 4dB caused an increase in errors which attracted the attention of DLM to apply interleaving :(
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kitz

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Re: DLM Reset
« Reply #22 on: September 24, 2018, 10:45:16 PM »

ETA  just seen this from your stats when running at 4dB    :'(

Quote
ES/hour:                   2560

That will be why you have interleaving applied and why your speed has decreased.

Quote
ES/hour:                   488      2391

The above doesnt look good either, but in theory that should decrease now interleave has been applied.    If not and your line is still continuing to error it may be good reason to get your ISP involved again.

Did you get those stats from DSLstats?   It may be worthwhile checking some of the graphs such as SNRm & errors.
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j0hn

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Re: DLM Reset
« Reply #23 on: September 25, 2018, 03:57:27 PM »

That will most likely be when a neighbour temporarily goes off line and reduces the crosstalk affecting your line. If you reboot during this period you will probably get an increased connection speed, then when the crosstalk returns, your SNRM will drop to ~3 to 4 dB. Whether your connection remains stable is in the lap of the gods.

This is exactly what happened.
Some lines can manage 3, 4 or 5dB SNRM without G.INP.
It seems your line can't.

Quote
ES/hour:                   2560

The maximum ES allowed per day is either 1440 or 2880 (depending on the ISP's chosen DLM policy).
You smashed through that.

It make take anything from a few days  to a couple weeks for DLM to remove the INP+Interleaving.

If your line is anything like mine (and many others) it won't go back to fastpath (no interleaving) on its own.
I had to manually cap my line to get error figures low enough for DLM to put my line on fastpath.
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Shakermaker

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Re: DLM Reset
« Reply #24 on: September 25, 2018, 04:22:04 PM »

Thanks for the advice guys!

The errors seemed to have stabalized now SNR gone back down to 4db again though.

Will have a proper look when I get home from work later

Thanks

Sent from my Pixel 2 XL using Tapatalk

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j0hn

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Re: DLM Reset
« Reply #25 on: September 25, 2018, 05:51:18 PM »

In my experience you need under 20 ES per day for DLM to remove interleaving.
Even that wasn't enough for my line and I needed single figure ES/day.

You may be best resyncing the line to get it back to 6dB for better stability and to eventually get back the speed lost to interleaving.

It sounds very much like you have a neighbour who turns their modem off for hours at a time.
If your line resyncs during this period then as soon as their modem syncs again your SNRM drops to 4dB.
This has caused the line to be interleaved and will probably prevent interleaving being removed.
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Shakermaker

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Re: DLM Reset
« Reply #26 on: September 25, 2018, 06:04:23 PM »

I'm going to do a resync later but hoping my SNR goes back up to 6db before hand as I don't want to lose any more speed

Sent from my Pixel 2 XL using Tapatalk

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Shakermaker

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Re: DLM Reset
« Reply #27 on: September 25, 2018, 06:50:21 PM »

Definitely looking better on the ES but not sure I want to do a resync with those SNR values?

I can see my line sync dropping to about 35Mbps,

Stats recorded 25 Sep 2018 17:46:25

DSLAM type / SW version:   IFTN:0xd086 (208.134) / v0xd086
Modem/router firmware:     AnnexA version - A2pv6F039g1.d24m
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                    1 day 14 hours 4 min 48 sec
Resyncs:                   0 (since 25 Sep 2018 17:40:21)
         
            Downstream   Upstream
Line attenuation (dB):     18.8      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   44026      5889
SNR margin (dB):           4.1      4.8
Power (dBm):               13.5      -0.4
Interleave depth:          861      1
INP:                       3.00      0
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             2.7804      0.1242
RSUnCorr/RS (%):           0.0004      0.0000
ES/hour:                   0      46.2
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j0hn

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Re: DLM Reset
« Reply #28 on: September 25, 2018, 07:05:05 PM »

You have 0 ES/hour so looks like 4dB is ok with interleaving.

If you are using DslStats it would be better you post the stats from the Telnet Data > Connection Stats tab.
The stats posted above are missing many details that help us see how your line is performing.

If you are worried about the huge size of the stats you can place them within the [code]  tags. It's the # box above the reply box.
It really doesn't matter though :)

edit: tag fail. forgot the nobbc tag
« Last Edit: September 25, 2018, 07:13:23 PM by j0hn »
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Shakermaker

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Re: DLM Reset
« Reply #29 on: September 25, 2018, 07:16:16 PM »

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    1
Last initialization procedure status:   0
Max:    Upstream rate = 5429 Kbps, Downstream rate = 47027 Kbps
Bearer: 0, Upstream rate = 5889 Kbps, Downstream rate = 44026 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):        4.1             4.7
Attn(dB):        18.8            0.0
Pwr(dBm):        13.5           -0.4

                        VDSL2 framing
                        Bearer 0
MSGc:           18              33
B:              51              184
M:              1               1
T:              64              5
R:              12              16
S:              0.0376          0.9981
L:              13624           1611
D:              861             1
I:              64              201
N:              64              201

                        Counters
                        Bearer 0
OHF:            57486600                284202
OHFErr:         216             2040
RS:             1831562660              2229580
RSCorr:         46473476                5071
RSUnCorr:       6325            0

                        Bearer 0
HEC:            1422            0
OCD:            0               0
LCD:            0               0
Total Cells:    3162092959              0
Data Cells:     177004572               0
Drop Cells:     0
Bit Errors:     0               0

ES:             78342           82899
SES:            86              298
UAS:            64              196510
AS:             138828

                        Bearer 0
INP:            3.00            0.00
INPRein:        0.00            0.00
delay:          8               0
PER:            2.41            16.28
OR:             79.51           19.16
AgR:            44105.71        5907.96

Bitswap:        17483/18157             7960/8028

Total time = 2 days 21 hours 41 min 24 sec
FEC:            46473476                5071
CRC:            216             2040
ES:             78342           82899
SES:            86              298
UAS:            64              196510
LOS:            2               0
LOF:            15              0
LOM:            0               0
Latest 15 minutes time = 11 min 24 sec
FEC:            302023          140
CRC:            3               19
ES:             1               19
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            316274          146
CRC:            3               24
ES:             1               22
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 21 hours 41 min 24 sec
FEC:            27265808                1261
CRC:            104             1079
ES:             36              901
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            19207668                3810
CRC:            112             961
ES:             17644           41639
SES:            11              149
UAS:            32              98269
LOS:            1               0
LOF:            7               0
LOM:            0               0
Since Link time = 1 days 14 hours 33 min 47 sec
FEC:            46473476                5071
CRC:            216             2040
ES:             65              42292
SES:            0               149
UAS:            0               98248
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >
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