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[tommy45]

My stats are on the MDWS user Tom34 The stats just don't look right to me,some of the spare snr on both ds/us appears to be missing but attainable is around the same, this is after what appears to be dlm event  the second one in the past 13days which has added yet another 7-8ms of latency and reduced my ds sync and IP profile further  by around 2mbps ,
I can see no reason as to why DLM has borked my connection further  there has been Zero disconnects since i last powered on the modem several months ago,As for other stuff like errors  i can't say because i have been using the ECI modem, because it seems to give better performance on my cicuit,  since i swapped the modem back to the hg612 to monitor things  it's been error free ,
My thoughts are due to the odd time  1pm that DLM has acted ,and its been some 13days since it last acted , thoughts anyone

[WWWombat]

If there have been zero disconnects, then DLM is more likely to have been tickled by errors on the line - which is considerably less visible, unless you are watching a video stream at the time, or measuring download performance.

The job of DLM is to tune settings in order to get rid of errors - so checking the level of errors now, after DLM has happened, is a harder job. Looking at the CRC count or the EScount (on MDWS) shows very little activity there.

However, you are definitely seeing FEC (error corrections) happen, with some regularity. Upstream seems to get frequent spikes of around 670 corrections, while downstream saw a larger spike earlier today. There's definitely *something* happening on the line - both upstream and downstream.

[tommy45]

The fec has always given errors  but arent the upstream fec/errors  down to the remote side of things?

[tommy45]

Code: [Select]

~=~=~=~=~=~=~=~=~=~=~= Plink log 2014.10.29 02:00:18 =~=~=~=~=~=~=~=~=~=~=~=

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 31135 Kbps, Downstream rate = 87820 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 75824 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): 6.2 15.3
Attn(dB): 13.7 0.0
Pwr(dBm): 12.5 3.8
VDSL2 framing
Bearer 0
MSGc: 18 26
B: 51 237
M: 1 1
T: 64 42
R: 12 16
S: 0.0218 0.3781
L: 23464 5374
D: 1483 1
I: 64 127
N: 64 254
Counters
Bearer 0
OHF: 32630332 3072153
OHFErr: 32 25
RS: 4058216704 2875851
RSCorr: 60525 195
RSUnCorr: 6795 0

Bearer 0
HEC: 1256 0
OCD: 17 0
LCD: 17 0
Total Cells: 2375116135 0
Data Cells: 43623484 0
Drop Cells: 0
Bit Errors: 0 0

ES: 1 24
SES: 0 0
UAS: 22 22
AS: 45748

Bearer 0
INP: 3.00 0.00
INPRein: 0.00 0.00
delay: 8 0
PER: 1.40 3.98
OR: 136.94 64.22
AgR: 75961.27 20063.54

Bitswap: 15596/15596 19/19

Total time = 12 hours 42 min 50 sec
FEC: 60525 195
CRC: 32 25
ES: 1 24
SES: 0 0
UAS: 22 22
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 12 min 50 sec
FEC: 177 1
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: 979 2
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 = 12 hours 42 min 50 sec
FEC: 60525 195
CRC: 32 25
ES: 1 24
SES: 0 0
UAS: 22 22
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 = 12 hours 42 min 27 sec
FEC: 60525 195
CRC: 32 25
ES: 1 24
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: 0
Last initialization procedure status: 0
Max: Upstream rate = 31135 Kbps, Downstream rate = 87820 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 75824 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:     31135 kbps     87820 kbps
Actual Aggregate Tx Power:        3.8 dBm      12.5 dBm
====================================================================================
  VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 3.2 15.5 22.5   N/A   N/A 8.9 19.6 29.9
Signal Attenuation(dB): 3.2 14.4 21.5   N/A   N/A 11.8 19.4 29.9
SNR Margin(dB): 15.4 15.4 15.2   N/A   N/A 6.1 6.1 6.1
TX Power(dBm): -11.4 -27.3 3.7   N/A   N/A 8.3 7.8 6.9
Those are from the previous time i was interleaved by  dynamic line mis-management for some  lots of FEC 's on the DS  none of the upstream but not interleaved that time

[WWWombat]

The upstream FEC counters are incremented at the DSLAM, as it detects (and fixes) errors in the bitstream sent from your modem. Your modem is sent a copy of the counters, so you can see them.

In those older line stats, you can see that upstream FEC is active, without interleaving, and without DLM intervention on the upstream. This combination seems to be relatively common - and happens without any particular amount of errors having been present; my line is currently configured this way without ever having bothered DLM.

But you are right that the old stats don't seem to be showing many FEC, CRC or ES events upstream. Not a lot of sign of anything!

However, your newer line stats have certainly triggered DLM in the upstream direction - but there is little indication of what.

Anyway, as you post elsewhere, G.INP has activated, so not much point looking in details now.