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Author Topic: Cabinet 25 DSLAM Installation  (Read 7677 times)

j0hn

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Re: Cabinet 25 DSLAM Installation
« Reply #120 on: June 12, 2019, 11:08:58 AM »

As pointed out previously it can in some cases take a number of weeks for G.INP to be applied (11 weeks for me).

I was the exact same as yourself being the 1st on a brand new cabinet. I thought perhaps something wasn't configured correctly and G.INP wouldn't be applied.

I would have hoped the DLM reset would have speeded up the process but looks like DLM is determined to make you wait.

Unfortunately the DLM is completely automated and there's zero the ISP can do.

The DSLAM doesn't need a firmware upgrade to do G.INP.
It just needs DLM to load that particular line profile.

If you send the command xdslcmd info --vendor with the HG612 it will return the DSLAM chipset/firmware in use.
« Last Edit: June 12, 2019, 11:11:10 AM by j0hn »
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Plusnet FTTC 80/20 -  ECI now Huawei cab
retx low @ 3dB target SNRM
Zyxel VMG1312-B10A bridged with 1508 MTU + Asus RT-AC68U running Asuswrt-Merlin

mentaltom

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Re: Cabinet 25 DSLAM Installation
« Reply #121 on: June 12, 2019, 11:12:03 AM »

As pointed out previously it can in some cases take a number of weeks for G.INP to be applied (11 weeks for me).

I was the exact same as yourself being the 1st on a brand new cabinet. I thought perhaps something wasn't configured correctly and G.INP wouldn't be applied.

I would have hoped the DLM reset would have speeded up the process but looks like DLM is determined to make you wait.

Unfortunately the DLM is completely automated and there's zero the ISP can do.

The DSLAM doesn't need a firmware upgrade to do G.INP.
It just needs DLM to load that particular line profile.

If you send the command xdslcmd info --vendor with the HG612 it will return the DSLAM chipset/firmware in use.

I know, this is why I am trying to pursue Openreach, anyway here is the vendor output:

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status:   0
Max:    Upstream rate = 21398 Kbps, Downstream rate = 58716 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 60087 Kbps

ChipSet Vendor Id:      BDCM:0xa48c
ChipSet VersionNumber:  0xa48c
ChipSet SerialNumber:
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j0hn

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Re: Cabinet 25 DSLAM Installation
« Reply #122 on: June 12, 2019, 02:00:16 PM »

Quote
I know, this is why I am trying to pursue Openreach

My advice would be to wait.
You've already had a DLM reset which would be about all OpenReach could do.
Another DLM reset simply restarts the clock on the wait for DLM to apply G.INP.

Your DSLAM firmware is the standard firmware/line card version in use.
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Plusnet FTTC 80/20 -  ECI now Huawei cab
retx low @ 3dB target SNRM
Zyxel VMG1312-B10A bridged with 1508 MTU + Asus RT-AC68U running Asuswrt-Merlin

gt94sss2

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Re: Cabinet 25 DSLAM Installation
« Reply #123 on: June 14, 2019, 11:07:38 PM »

ChipSet Vendor Id:      BDCM:0xa48c
ChipSet VersionNumber:  0xa48c

There is what I understand different/newer version on some DSLAMS -   BDCM:0xb12d/v0xb12d - but that doesn't affect G.INP functionality

As j0hn says, I would just wait and leave the line alone.
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mentaltom

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Re: Cabinet 25 DSLAM Installation
« Reply #124 on: June 14, 2019, 11:11:00 PM »

There is what I understand different/newer version on some DSLAMS -   BDCM:0xb12d/v0xb12d - but that doesn't affect G.INP functionality

As j0hn says, I would just wait and leave the line alone.

Thank you both. Yes, Iíve actually realised that fastpath is active (having read how to tell on other posts) and since Interleaving dropped ping times have dropped from 21 to 8ms, so happy to just leave the line at the moment - solid for 2 weeks now. Just worried if it drops for any other reason than DLM the speed will reduce to below attainable.
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mentaltom

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Re: Cabinet 25 DSLAM Installation
« Reply #125 on: July 01, 2019, 09:38:43 AM »

!!G.INP ENABLED!! - Resync at 0139 on 1 July after an uptime of 32 days, thank you to everyone who said I need to be patient, didn't take as long as I thought, and I have gained 3MB on the line, from 60 to 63.  I suppose the last thing I need do to now is tweak down to a 3db target SNR as discussed a lot on here!

Code: [Select]
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 20891 Kbps, Downstream rate = 63256 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 63870 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 6.8
Attn(dB): 16.5 0.0
Pwr(dBm): 12.4 6.8
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 243 237
M: 1 1
T: 0 42
R: 10 16
S: 0.1216 0.3781
L: 16704 5374
D: 8 1
I: 254 127
N: 254 254
Q: 8 0
V: 0 0
RxQueue: 51 0
TxQueue: 17 0
G.INP Framing: 18 0
G.INP lookback: 17 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 9846
OHFErr: 0 1
RS: 1277408 413388
RSCorr: 0 1
RSUnCorr: 0 0
Bearer 1
OHF: 2490 0
OHFErr: 0 0
RS: 24280 0
RSCorr: 0 0
RSUnCorr: 0 0

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

G.INP Counters
LEFTRS: 0 0
minEFTR: 63877 0
errFreeBits: 38961 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 4881537 0
Data Cells: 8598 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: 11280 7769
SES: 45 0
UAS: 2438 2395
AS: 40

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: 63935.69 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: 12/12 1/1

Total time = 1 days 12 hours 38 min 41 sec
FEC: 3441626 28381
CRC: 10662 2242
ES: 11280 7769
SES: 45 0
UAS: 2438 2395
LOS: 4 0
LOF: 35 0
LOM: 0 0
Latest 15 minutes time = 8 min 41 sec
FEC: 0 1
CRC: 0 1
ES: 11 2
SES: 11 0
UAS: 38 27
LOS: 1 0
LOF: 5 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 0 0
CRC: 0 0
ES: 4 4
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 12 hours 38 min 41 sec
FEC: 0 1
CRC: 0 1
ES: 218 132
SES: 11 0
UAS: 38 27
LOS: 1 0
LOF: 5 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 0 0
CRC: 0 0
ES: 359 206
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 39 sec
FEC: 0 1
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0


HELLO HG612
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 20891 Kbps, Downstream rate = 63256 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 63870 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:     20891 kbps     63256 kbps
Actual Aggregate Tx Power:        6.8 dBm      12.4 dBm
 =========================================================================================
  VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 6.0 21.6 31.2   N/A   N/A 11.4 25.6 39.1
Signal Attenuation(dB): 6.0 20.7 30.3   N/A   N/A 15.3 25.3 39.1
SNR Margin(dB): 6.9 6.8 6.8   N/A   N/A 6.3 6.3 6.3
TX Power(dBm): -4.8 -21.8 6.5   N/A   N/A 8.1 7.8 6.9

Good Bye HG612
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RealAleMadrid

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Re: Cabinet 25 DSLAM Installation
« Reply #126 on: July 01, 2019, 10:00:47 AM »

You don't need to do anything, DLM will reduce the SNRM down to 3dB if the line is deemed stable and has low error counts.
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tubaman

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Re: Cabinet 25 DSLAM Installation
« Reply #127 on: July 01, 2019, 10:07:37 AM »

You don't need to do anything, DLM will reduce the SNRM down to 3dB if the line is deemed stable and has low error counts.

Indeed, just leave it to do its thing - you should find it'll step down in 1dB steps if the line is stable enough.
 :)
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BT FTTC 80/20 Huawei Cab - Zyxel VMG8924-B10A

mentaltom

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Re: Cabinet 25 DSLAM Installation
« Reply #128 on: August 14, 2019, 08:29:08 PM »

Hello All. Long time no speak. Since G.INP was applied on 1 July, the line was solid as a rock. In the last 3 days there has been a resync between 0200 and 0400am - this has had a positive effect on downstream as I have added another 2MB to my sync speed. Interestingly after the second resync I noticed that interleaving had been applied to the upstream too, but this only lasted 24 hours before being removed again. There was no resync this morning so I imagine DLM is now happy! Fancy taking a look and giving me a rough idea what DLM has been experimenting with?

1 July


Morning 1


Morning 2


Morning 3

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gt94sss2

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Re: Cabinet 25 DSLAM Installation
« Reply #129 on: August 14, 2019, 11:10:20 PM »

The target SNR for a new line is around 6.3

Once g.inp is active, if the downstream sync speed is not reaching the maximum you have paid for, DLM will start lowering the downstream SNR in 1dB increments over several days to 3.x assuming your line remains stable - to boost your sync speed.

In your screenshots, itís moved from 6.3 on 1 July to 5.2 on morning one
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mentaltom

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Re: Cabinet 25 DSLAM Installation
« Reply #130 on: August 14, 2019, 11:14:20 PM »

Thank you. I hope it keeps dropping the target SNR then because the line isnít unstable. I was more curious as to why it whacked upstream interleaving on for one day and then reverted the change ;)
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j0hn

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Re: Cabinet 25 DSLAM Installation
« Reply #131 on: August 15, 2019, 12:40:43 AM »

That's G.INP on the upstream.

It's off by default and only applied if certain error thresholds are met.
When it isn't needed any more it is removed.

I've had upstream G.INP come and go a few times, usually after lots of upstream ES.
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Plusnet FTTC 80/20 -  ECI now Huawei cab
retx low @ 3dB target SNRM
Zyxel VMG1312-B10A bridged with 1508 MTU + Asus RT-AC68U running Asuswrt-Merlin
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