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[GigabitEthernet]

The connection remained connected last night with very few issues, see these stats:

Code: [Select]

/usr/sbin/adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 8000
Channel: FAST, Upstream rate = 888 Kbps, Downstream rate = 6016 Kbps
Link Power State: L0
Mode: ADSL2+
Channel: Fast
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 11.1 7.5
Attn(dB): 43.5 23.3
Pwr(dBm): 0.0 12.9
Max(Kbps): 6580 888
Rate (Kbps): 6016 888
G.dmt framing
K: 189(0) 14
R: 14 16
S: 1 8
D: 32 8
ADSL2 framing
MSGc: 59 10
B: 188 13
M: 1 8
T: 1 9
R: 14 16
S: 1.0000 4.0000
L: 1624 256
D: 32 8
Counters
SF: 3542718 3198279
SFErr(CRCErr): 16 0
RS: 230276728 1734450
RSCorr: 9365 250
RSUnCorr: 170 0

HEC: 15 0
OCD: 0 0
LCD: 0 0
Total Cells: 816836047 1630396
Data Cells: 58332229 38969
Drop Cells: 0
Bit Errors: 0 0

ES: 12 0
SES: 0 8
UAS: 324 0
AS(Uptime): 57570

INP: 1.10 2.00
PER: 16.25 18.00
delay: 8.00 8.00
OR: 32.00 7.11

Bitswap: 9575 0
Total uptime: 57570

Total time = 16 hours 10 min 36 sec
SF  = 3542718
CRC = 16
LOS = 0
LOF = 0
ES  = 12
Latest 1 day time = 16 hours 10 min 36 sec
SF  = 3542718
CRC = 16
LOS = 0
LOF = 0
ES  = 12
Latest 15 minutes time = 10 min 36 sec
SF  = 39132
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Previous 15 minutes time = 15 min 0 sec
SF  = 55366
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Previous 1 day time = 0 sec
SF  = 0
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF  = 55365
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF  = 55428
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF  = 55365
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Showtime Drop Reason: 8000
Last Retrain Reason: 8000


[Bald_Eagle1]

According to Zen, the line was very unstable when I moved to ADSL2+, but I can't confirm this as I was asleep and not doing any monitoring.

However, I am starting to believe that the target SNRM wasn't reset on migration to 21CN.This is because the target SNRM was 12dB on ADSL Max due to an unstable router which has now been removed and replaced with a (currently) much more stable NETGEAR DG834GT.

Now you are back on the DG834GT, perhaps you could recommence the 24/7 monitoting scripts that may give some insight into what is going on while you are asleep, levels of stability etc.

[GigabitEthernet]

Now you are back on the DG834GT, perhaps you could recommence the 24/7 monitoting scripts that may give some insight into what is going on while you are asleep, levels of stability etc.

Good idea BE.

Rather than waiting a very long time (potentially) for the SNRM to come down on its own, how long should I wait before requesting Zen to lower it? Is that a good idea?

[Bald_Eagle1]

The connection remained connected last night with very few issues, see these stats:

Code: [Select]

Channel: FAST, Upstream rate = 888 Kbps, Downstream rate = 6016 Kbps
G.dmt framing
K: 189(0) 14
R: 14 16
S: 1 8
D: 32 8
ADSL2 framing
MSGc: 59 10
B: 188 13
M: 1 8
T: 1 9
R: 14 16
S: 1.0000 4.0000
L: 1624 256
D: 32 8



That does state Channel as "Fast", but it also reports values for Interleaving (D:)

I believe that D: values of 1 mean Interleaving is OFF, any other value meaning it is on (at whatever depth is reported).

[GigabitEthernet]

Code: [Select]

[quote author=Bald_Eagle1 link=topic=11501.msg222119#msg222119 date=1345106308]
Channel: FAST, Upstream rate = 888 Kbps, Downstream rate = 6016 Kbps
         G.dmt framing
K:      189(0)      14
R:      14      16
S:      1      8
D:      32      8
         ADSL2 framing
MSGc:      59      10
B:      188      13
M:      1      8
T:      1      9
R:      14      16
S:      1.0000      4.0000
L:      1624      256
D:      32      8



That does state Channel as "Fast", but it also reports values for Interleaving (D:)

I believe that D: values of 1 mean Interleaving is OFF, any other value meaning it is on (at whatever depth is reported).

I did wonder about that. Why does the router report it as fast path then? It is not only this router either.

[Bald_Eagle1]

I did wonder about that. Why does the router report it as fast path then? It is not only this router either.

I don't know the answer to that one, but Impulse Noise Protection & delay are also ON at various levels.
I believe these go hand-in-hand with Interleaving being switched ON.

[roseway]

However, I am starting to believe that the target SNRM wasn't reset on migration to 21CN.This is because the target SNRM was 12dB on ADSL Max due to an unstable router which has now been removed and replaced with a (currently) much more stable NETGEAR DG834GT.

I was in a similar position when I migrated, but it didn't take DLM long to drop my target SNR margin right down to 3 dB. You may well find that the same happens to you. The good thing about 21CN/WBC is that there's no waiting for the IP profile to rise when the connection speed rises - it happens almost immediately.

[GigabitEthernet]

However, I am starting to believe that the target SNRM wasn't reset on migration to 21CN.This is because the target SNRM was 12dB on ADSL Max due to an unstable router which has now been removed and replaced with a (currently) much more stable NETGEAR DG834GT.

I was in a similar position when I migrated, but it didn't take DLM long to drop my target SNR margin right down to 3 dB. You may well find that the same happens to you. The good thing about 21CN/WBC is that there's no waiting for the IP profile to rise when the connection speed rises - it happens almost immediately.

What sort of timeframe was that?

[roseway]

As far as I recall, about three days.

[GigabitEthernet]

Up to 15dB now! I didn't even do anything! Apart from Zen restarting the connection about 4 hours ago when they ran a diagnostic.

GRRRR!!!!

[kitz]

 

[GigabitEthernet]

Tweaked down to 9dB and its rediculously stable with only 30 ES in 15 hours.

The line still appears to be underperforming on ADSL2+ (and ADSL2) with no speed increase at all.

[Bald_Eagle1]

Up to 15dB now! I didn't even do anything! Apart from Zen restarting the connection about 4 hours ago when they ran a diagnostic.

GRRRR!!!!

Don't suppose you had the 24/7 script or roseway's program running that MIGHT have captured whatever may have immediately preceded the jump? (Unless it was indeed DLM seeing Zen's restarting of the connection as an indication of instability)

[GigabitEthernet]

I had roseway's script running and there was nothing except Zen's restart. The connect ion had been stable for at least 15 hours.

[GigabitEthernet]

Stats:

Code: [Select]

/usr/sbin/adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 8000
Channel: FAST, Upstream rate = 888 Kbps, Downstream rate = 6983 Kbps
Link Power State: L0
Mode: ADSL2+
Channel: Fast
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 8.0 5.4
Attn(dB): 43.5 23.3
Pwr(dBm): 0.0 9.4
Max(Kbps): 7724 888
Rate (Kbps): 6983 888
G.dmt framing
K: 219(0) 14
R: 16 16
S: 1 8
D: 32 8
ADSL2 framing
MSGc: 59 10
B: 218 13
M: 1 8
T: 1 9
R: 16 16
S: 0.9989 4.0000
L: 1882 256
D: 32 8
Counters
SF: 3514728 3169655
SFErr(CRCErr): 33 10
RS: 228457342 1219230
RSCorr: 24974 52
RSUnCorr: 436 0

HEC: 32 30
OCD: 0 0
LCD: 0 0
Total Cells: 939689592 1634465
Data Cells: 50334598 40813
Drop Cells: 0
Bit Errors: 0 4223

ES: 26 0
SES: 0 5
UAS: 82 0
AS(Uptime): 57053

INP: 1.08 2.00
PER: 16.23 18.00
delay: 7.99 8.00
OR: 32.03 7.11

Bitswap: 9120 0
Total uptime: 57732

Total time = 16 hours 4 min 23 sec
SF  = 3551737
CRC = 33
LOS = 0
LOF = 0
ES  = 26
Latest 1 day time = 16 hours 4 min 23 sec
SF  = 3551737
CRC = 33
LOS = 0
LOF = 0
ES  = 26
Latest 15 minutes time = 4 min 23 sec
SF  = 16251
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Previous 15 minutes time = 15 min 0 sec
SF  = 55486
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Previous 1 day time = 0 sec
SF  = 0
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF  = 55424
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF  = 55425
CRC = 0
LOS = 0
LOF = 0
ES  = 0
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF  = 55424
CRC = 0
LOS = 0
LOF = 0
ES  = 0
Showtime Drop Reason: 8000
Last Retrain Reason: 8000