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Author Topic: Netgear DG834g v4 Showtime Last Retrain Reasons  (Read 3710 times)

Rogs

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Netgear DG834g v4 Showtime Last Retrain Reasons
« on: February 22, 2009, 12:32:38 PM »

Hi,

This is my first post here. It's probably been ask before,  but I can't find any explanations or threads.

Since a line fault ruined my download speeds back in January, I've been monitoring my Netgear DG834g v4 with Routerstats via the Telnet option. The drop in SN Margin I was waiting for has recently happened, dropping from 15 to 12db. Hopefully there will be another one soon!

Last night, with computer switched off my router logged the errors below, with a Last retrain code of 1.  CRC, LOS, LOF, and ES were all at zero when I looked before switching off the computer. Are there any clues below as to what happened, was it perhaps a local power blip or something at the exchange? It kept the same WAN IP.

Does anyone know what the Showtime Drop reason and Last Retrain reason codes mean? What different codes are likely to be shown here?


Any help appreciated.
Rogs
 
/usr/sbin/adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 1
Channel: INTR, Upstream rate = 448 Kbps, Downstream rate = 7392 Kbps
Link Power State: L0
Mode:                   G.DMT
Channel:                Interleave
Trellis:                ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):       12.3            25.0
Attn(dB):       13.0            16.5
Pwr(dBm):       19.8            11.9
Max(Kbps):      7936            1256
Rate (Kbps):    7392            448
                        G.dmt framing
K:              232(0)          15
R:              16              16
S:              1               8
D:              64              8
                        ADSL2 framing
MSGc:           1               1
B:              232             15
M:              1               8
T:              1               1
R:              16              16
S:              1.0686          9.0000
L:              1864            128
D:              64              8
                        Counters
SF:             1921156         1921142
SFErr:          0               0
RS:             130638674               16328704
RSCorr:         136             1
RSUnCorr:       0               0

HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    569388030               0
Data Cells:     2395755         0
Drop Cells:     0
Bit Errors:     0               0

ES:             1               0
SES:            1               0
UAS:            36              0
AS:             32659

INP:            2.19            4.00
PER:            1.87            1.96
delay:          17.09           18.00
OR:             29.94           28.44

Bitswap:        0               0

Total time = 1 days 3 hours 6 min 23 sec
SF  = 20984290
CRC = 450
LOS = 1
LOF = 9
ES  = 1
Latest 1 day time = 3 hours 6 min 23 sec
SF  = 657850
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Latest 15 minutes time = 6 min 23 sec
SF  = 22538
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Previous 15 minutes time = 15 min 0 sec
SF  = 52982
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Previous 1 day time = 24 hours 0 sec
SF  = 5081314
CRC = 450
LOS = 1
LOF = 9
ES  = 1
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF  = 52982
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF  = 52864
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF  = 52923
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Showtime Drop Reason:   1
Last Retrain Reason:    1


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roseway

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Re: Netgear DG834g v4 Showtime Last Retrain Reasons
« Reply #1 on: February 22, 2009, 12:39:08 PM »

Quote
Previous 1 day time = 24 hours 0 sec
SF  = 5081314
CRC = 450
LOS = 1
LOF = 9
ES  = 1

I'm no expert on this subject, but it looks to me that in the hour quoted there was only one errored second, so I guess that the 450 CRC errors occurred in that second, which suggests that there was just a brief burst of noise.
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  Eric