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Author Topic: Quick FTTC DLM / Stats question  (Read 288 times)

flilot

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  • Posts: 31
Quick FTTC DLM / Stats question
« on: November 07, 2019, 04:46:29 PM »

Hi Kitizens,

Quick question RE: DLM on FTTC
My connection has been up and stable for 100 days now.  However the line has constantly had interleaving applied for the entire length of that time, I was expecting DLM to intervene at some point and switch it to fastpath? I can only guess that something is stopping it from doing so, such as error rates etc?
For info I'm on an ECI cab if that affects things in any way (I already know G.INP will never be available via ECI, although there was a BT trial of it, and suggestion of ECI cabs being replaced with Huawei ones, any updated news on that?)

Current Stats:
Code: [Select]
Stats recorded 07 Nov 2019 16:37:10

DSLAM type / SW version: IFTN:0xb206 (178.6) / v0xb206
Modem/router firmware:  AnnexA version - A2pv6C038m.d24j
DSL mode:                VDSL2 Profile 17a
Status:                  Showtime
Uptime:                  100 days 1 hour 11 min 28 sec
Resyncs:                7 (since 06 Jul 2019 18:19:08)

Downstream Upstream
Line attenuation (dB):  14.4 0.0
Signal attenuation (dB): Not available on VDSL2
Connection speed (kbps): 67603 20000
SNR margin (dB):        4.6 8.8
Power (dBm):            2.4 2.4
Interleave depth:        1323 1
INP:                    3.00 0
G.INP:                  Not enabled Not enabled
Vectoring status:        5 (VECT_UNCONFIGURED)

RSCorr/RS (%):          13.5591 3.3755
RSUnCorr/RS (%):        0.1317 0.0000
ES/hour:                1.68 4.21
Connection stats
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 27037 Kbps, Downstream rate = 71532 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 67603 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): 4.6 8.8
Attn(dB): 14.4 0.0
Pwr(dBm): 2.4 2.4
VDSL2 framing
Bearer 0
MSGc: 18 150
B: 51 236
M: 1 1
T: 64 5
R: 12 16
S: 0.0245 0.3771
L: 20920 5410
D: 1323 1
I: 64 255
N: 64 255
Counters
Bearer 0
OHF: 1202282264 2739127
OHFErr: 45377 13399
RS: 2841420294 4294320
RSCorr: 385272032 144956
RSUnCorr: 3741253 0

Bearer 0
HEC: 834569 0
OCD: 18659 0
LCD: 18659 0
Total Cells: 2717092810 0
Data Cells: 130381994 0
Drop Cells: 0
Bit Errors: 0 0

ES: 7260 8568
SES: 2 64
UAS: 26 109
AS: 8644288

Bearer 0
INP: 3.00 0.00
INPRein: 0.00 0.00
delay: 8 0
PER: 1.57 6.15
OR: 122.10 202.87
AgR: 67725.44 20203.27

Bitswap: 4168051/4168112 20086/20223

Total time = 1 days 1 hours 11 min 54 sec
FEC: 385272032 144956
CRC: 45377 13399
ES: 7260 8568
SES: 2 64
UAS: 26 109
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 11 min 54 sec
FEC: 53779 1
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: 38271 6
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 1 hours 11 min 54 sec
FEC: 158336 35
CRC: 13 5
ES: 3 5
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 5449797 1213
CRC: 366 187
ES: 70 115
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 49 days 17 hours 2 min 47 sec
FEC: 385272032 144956
CRC: 45377 13399
ES: 7260 8568
SES: 2 64
UAS: 0 83
LOS: 0 0
LOF: 0 0
LOM: 0 0
#

Thanks in advance for any and all insight!
Logged
Carl
____________________________
cabinet8 - My journey back to xDSL after a decade with VM.

underzone

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  • Posts: 295
Re: Quick FTTC DLM / Stats question
« Reply #1 on: November 07, 2019, 05:47:17 PM »

RSCorr/RS (%):             13.5591      3.3755 is the problem!

... a different modem/router may suit your line better, or see if there are any firmware updates for your current modem/router.
Logged
AAISP Home::1 80/20, Huawei 288, Zyxel VMG8924-B10A (bridged with 1500 MTU, thanks to johnson), pfSense x64

flilot

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  • Posts: 31
Re: Quick FTTC DLM / Stats question
« Reply #2 on: November 07, 2019, 06:52:36 PM »

RSCorr/RS (%):             13.5591      3.3755 is the problem!

... a different modem/router may suit your line better, or see if there are any firmware updates for your current modem/router.

Surely that's not a lot over 100 days though? Average of 0.13 corrected errors a day?

I'm using a HG612 as the modem as I wanted something cheap to keep an eye on stats with monitoring (Zen supplied me with a Fritz!Box which isn't good in that respect). Not really worth me getting another modem/router as hoping to go over to CityFibre/Vodafone FTTP once my minimum contract period with Zen comes to an end.
Logged
Carl
____________________________
cabinet8 - My journey back to xDSL after a decade with VM.

j0hn

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  • Posts: 2634
Re: Quick FTTC DLM / Stats question
« Reply #3 on: November 08, 2019, 10:52:30 AM »

Surely that's not a lot over 100 days though? Average of 0.13 corrected errors a day?

385272032 corrected errors over 49 days.

The ES numbers are too high. Some lines are always interleaved unfortunately.
Logged
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

flilot

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  • Posts: 31
Re: Quick FTTC DLM / Stats question
« Reply #4 on: November 08, 2019, 12:09:02 PM »

385272032 corrected errors over 49 days.

The ES numbers are too high. Some lines are always interleaved unfortunately.

Link has been up for 100 days not 49. Isn't the stuck at 49 days thing a bug in the stats on some Broadcom chipsets?
Code: [Select]
Uptime:                  100 days 1 hour 11 min 28 sec
Would the ES still be too high over that time period?
Logged
Carl
____________________________
cabinet8 - My journey back to xDSL after a decade with VM.

j0hn

  • Kitizen
  • ****
  • Posts: 2634
Re: Quick FTTC DLM / Stats question
« Reply #5 on: November 08, 2019, 01:46:50 PM »

Link has been up for 100 days not 49. Isn't the stuck at 49 days thing a bug in the stats on some Broadcom chipsets?
Code: [Select]
Uptime:                  100 days 1 hour 11 min 28 sec
Would the ES still be too high over that time period?

I quoted the "since link time" figure since that's reliable. It's 49 days since sync was established.

Total time shows as 1 day and is a known bug.

Quote
Since Link time = 49 days 17 hours 2 min 47 sec
FEC:      385272032      144956
CRC:      45377      13399
ES:      7260      8568
SES:      2      64
UAS:      0      83
LOS:      0      0
LOF:      0      0
LOM:      0      0
Logged
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