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A Chronicle of My Migration and Problems

Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Totally brassed off with the non-response from PN  Angry
I decided to reboot the router............
Down NM now back to 6.1 and sync speed is back up to 9726.
Noise Margin:    6.1  dB
Connection Rate:  9726  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:        15920  Kbps

SF:              13881
SF Errors:        0
Reed Solomon:    10883154
RS Corrected:    521
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 128
This also put the tones back (see image)
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Here's today's update............
Still absolutely nothing from the technical guys at PN about what (if anything) they are doing about the low performance.
I think that's appalling  Angry
Figures so far tonight - the router has been "up" only 23.75 hours since reboot:
Noise Margin:     6.2   dB
Connection Rate:  9726  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:         15820  Kbps

SF:               5021561
SF Errors:        40
Reed Solomon:     3936904286
RS Corrected:     275827
RS Un-Corrected:  1430
HEC:              27
Errored Seconds:  36
Severe ES:        0
Interleave Depth: 128
Noise Margin:     6.1  dB
Connection Rate:  1215   Kbps
Line Attenuation: 15.0  dB
Power:            12.7  dBm
Max Rate:         1236  Kbps

SF:               4753004
SF Errors:        0
Reed Solomon:     2597109
RS Corrected:     0
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 4
Total Up Time (From SF count):
  0 days, 23:47:39

CRC:  40
LOS:  0
LOF:  0
ES :  36

Bytes Transferred (ppp0):
  Tx: 284785 (278.1 KiB)
  Rx: 368917 (360.2 KiB)
I forgot to add......... currently this is almost the best performance for quite some time:
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Iy's been about a week now and I thought I'd let yjr FDLAM try to sort itself out.
Current status is:
Noise Margin:     4.6   dB
Connection Rate:  14251  Kbps
Line Attenuation: 32.0  dB
Power:            0.0  dBm
Max Rate:         15916  Kbps

SF:               8853090
SF Errors:        610
Reed Solomon:     1150901808
RS Corrected:     657160
RS Un-Corrected:  27932
HEC:              491
Errored Seconds:  740
Severe ES:        32
Interleave Depth: 64

Sync speed has been 14251 for a couple of days now.
Let's hope things stay this way
Graham
Highlighted
Superuser
Superuser
Posts: 10,063
Thanks: 1,369
Fixes: 75
Registered: ‎06-04-2007

Re: A Chronicle of My Migration and Problems

Yes, the present status and result looks quite decent. Did you ever get a response to your ticket?
David
David
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Hi,spraxyt,
No, not really - only to leave things alone, which I did.
And just looking at my last post it would appear that I was drunk when I wrote it - I wasn't  Smiley
It's just that I'm lousy at touch typing in the dark and I didn't bother to check my spellings.
I'm off on holiday soon, so we'll have to see how the system copes with a period of inactivity.
The error rate is still a little high for my liking:
Down
Noise Margin:    4.5  dB
Connection Rate:  14251  Kbps
Line Attenuation: 32.0  dB
Power:            0.0  dBm
Max Rate:        15980  Kbps

SF:              14101197
SF Errors:        842
Reed Solomon:    1833155668
RS Corrected:    1279386
RS Un-Corrected:  33403
HEC:              704
Errored Seconds:  909
Severe ES:        32
Interleave Depth: 64
Up
Noise Margin:    6.5  dB
Connection Rate:  1177  Kbps
Line Attenuation: 14.9  dB
Power:            12.9  dBm
Max Rate:        1196  Kbps

SF:              13470066
SF Errors:        0
Reed Solomon:    3787171
RS Corrected:    0
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 4

Total Up Time (From SF count):
  2 days, 18:35:44

CRC:  2912
LOS:  4
LOF:  9
ES :  909

Bytes Transferred (ppp0):
  Tx: 11730196 (11.1 MiB)
  Rx: 117222254 (111.7 MiB)

Graham
Highlighted
Grafter
Posts: 46
Registered: ‎24-05-2009

Re: A Chronicle of My Migration and Problems

What qualifies as a "typical" (or acceptable?) error rate on an ADSL2+ (or even ADSL) link?
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Good question.
Wish I had a good answer. Perhaps PN might tell us.  Undecided
But just looking at the errored seconds for the up time, it would appear that I've had errors for 15 minutes over about 72 hours, whilst receiving about 110 megabytes of data.
That just has the feeling to me of being a little more than I would like to see.
However, the DSLAM does have my NM set to about 4.5 at the mo' - I would hope that if it goes a litlle higher I might hey less errors.
Having said that, I haven't noticed any breaks in connection.  Cool
Graham
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Well, I guess that I predicted it correctly - the NM has gone up to ~6............
Down
Noise Margin:    6.1  dB
Connection Rate:  13750  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:        16220  Kbps

SF:              3202197
SF Errors:        4968
Reed Solomon:    416285728
RS Corrected:    803198
RS Un-Corrected:  350682
HEC:              3522
Errored Seconds:  1830
Severe ES:        125
Interleave Depth: 64
Up
Noise Margin:    6.6  dB
Connection Rate:  1203  Kbps
Line Attenuation: 15.1  dB
Power:            12.8  dBm
Max Rate:        1228  Kbps

SF:              3058770
SF Errors:        0
Reed Solomon:    739647
RS Corrected:    0
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 4
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Hello again,
I am now back from a very nice holiday in Egypt...........
Whilst I was away, the down rate appears to have been increased to 13000+ and when I reset the connection (as needed) it had gone up to 15000+.........................
The current stats are:
Noise Margin:    2.0  dB
Connection Rate:  15544  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:        17564  Kbps

SF:              24876424
SF Errors:        3888
Reed Solomon:    705193994
RS Corrected:    149693470
RS Un-Corrected:  185897
HEC:              3304
Errored Seconds:  6387
Severe ES:        162
Interleave Depth: 96
Noise Margin:    6.5  dB
Connection Rate:  1208  Kbps
Line Attenuation: 15.1  dB
Power:            12.9  dBm
Max Rate:        1220  Kbps

SF:              23715780
SF Errors:        0
Reed Solomon:    2765140
RS Corrected:    0
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 4

I cannot understand why the DSLAM wants to reduce the NM to about 2db (it was about 3db when I first returned home a few days ago) if it's getting this number of errors - I would have thought that it should be going in the opposite direction????? (I am ignoring the up rate as this seems irrelevant at the present time)
Admittedly, I am currently running on about 15500 kbs at 1.9db to 2.1 db (as I write this), but for how much longer?
I am pretty sure that with such a high number of errors, the DSLAM is going to punish me later down the path, and then give me a c**p rate.....
Why, oh why, would it want to to reduce the NM value further, if the errors were increasing as the NM value went down?  Shocked
Does the DSLAM want to reduce the status to the point when the line won't work anymore and then start at the top again and work it's way down to a less detrimental NM figure? And then start all over again?
I still believe that not enough info is coming out of BT/PN as to how the DSLAM works (or is expected to work) for anyone to understand what is happening to their line configuration to make any sort of judgemant as to the performance of the line.
Graham
Highlighted
Grafter
Posts: 463
Registered: ‎02-08-2007

Re: A Chronicle of My Migration and Problems

Hi
Welcome back - I'm off to Egypt on Wednesday. Smiley
I'm hoping while i'm a away the DLM decides "sorry, I'll stop playing silly bees - and work". 
I'm stuck in a big loop between Pn and BT - BT do a change - line speed good for few days that the DLM goes "sorry you can have the speed".  PN ask to swap all but my house results in no improvement - call sent to BT - how do some change - then speed good.  Repeat cycle again! : Cry
Phil 
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Down sync has remained at 15544 for a few days now, although the throughput (profile) appears to have been increased:

The NM continues to go down slowly:
Noise Margin:     1.8   dB
Connection Rate:  15544  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:         17424  Kbps

SF:               35243602
SF Errors:        4903
Reed Solomon:     2788996788
RS Corrected:     206520379
RS Un-Corrected:  227012
HEC:              4121
Errored Seconds:  6947
Severe ES:        164
Interleave Depth: 96
Graham
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Here are the current figures (over a period of about 3 hours); the NM still seems to be creeping down and the errors creeping up:
Noise Margin:     1.7   dB
Connection Rate:  15544  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:         17420  Kbps

SF:               46242599
SF Errors:        10278
Reed Solomon:     704827896
RS Corrected:     291188300
RS Un-Corrected:  529260
HEC:              8862
Errored Seconds:  8269
Severe ES:        205
Interleave Depth: 96
Noise Margin:     1.6   dB
Connection Rate:  15544  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:         17456  Kbps

SF:               46332894
SF Errors:        10362
Reed Solomon:     722977234
RS Corrected:     292634770
RS Un-Corrected:  530732
HEC:              8935
Errored Seconds:  8325
Severe ES:        205
Interleave Depth: 96

Noise Margin:     1.5   dB
Connection Rate:  15544  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:         17436  Kbps

SF:               46340506
SF Errors:        10379
Reed Solomon:     724507302
RS Corrected:     292772998
RS Un-Corrected:  530919
HEC:              8951
Errored Seconds:  8332
Severe ES:        205
Interleave Depth: 96
This is now 9 days (plus a bit) since the last "resync"
Graham
Highlighted
Superuser
Superuser
Posts: 10,063
Thanks: 1,369
Fixes: 75
Registered: ‎06-04-2007

Re: A Chronicle of My Migration and Problems

The error counts look to be large, but probably in relative terms they aren't. With a Thomson TG585v7 on 20CN I've accumulated over 9000 HEC errors and over 2 miliion FEC errors in 4 days; surprisingly no Errored Seconds. If the DLM/MSAN was bothered I'm sure it would react.
David
Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems


Latest update............
Things haven't changed a great deal since the last posting:
The NM continues to fluctuate between 1.8 and 2.3  during any 24 hour period. The Sync has remained at 15544  constantly, even though I think there have been  a number of "lost sync" occurrences.
I am only running RouterStats for a couple of hours in the evening now, so I only managed to see one of theses drops.
The down interleave depth remains at 96.
The current statistics are as follows:
Noise Margin:    2.3  dB
Connection Rate:  15544  Kbps
Line Attenuation: 32.5  dB
Power:            0.0  dBm
Max Rate:        17784  Kbps

SF:              92329116
SF Errors:        20940
Reed Solomon:    1378283286
RS Corrected:    682969173
RS Un-Corrected:  1124102
HEC:              17404
Errored Seconds:  13637
Severe ES:        268
Interleave Depth: 96

Noise Margin:    6.0  dB
Connection Rate:  1208  Kbps
Line Attenuation: 15.1  dB
Power:            12.9  dBm
Max Rate:        1212  Kbps

SF:              88021610
SF Errors:        0
Reed Solomon:    924801
RS Corrected:    0
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 4

Total Up Time (From SF count):
  18 days, 03:59:54

CRC:  34798
LOS:  120
LOF:  34
ES :  13637

Highlighted
Grafter
Posts: 101
Registered: ‎25-01-2009

Re: A Chronicle of My Migration and Problems

Hi again,
This is just an update in case you thought I'd disappeared off the planet............
The ADSL2 has been relatively stable for a few weeks apart from a couple of LCP (should that be LCH?)  hiccups about midnight that caused me to be offline for at least 15 minutes at a time. These occurred just after midnight, by a minute or two, but I'm not sure if that is significant. Each time this happened I got a lower sync rate when connection came back on. However, even though I lost connection to the ISP, the sync connection does not appear to have been broken.
The end result is that I am currently at a sync rate of 13.6 mbps. The last hiccup occurred a couple of days ago.
Here are the current stats:
Downstream:
Noise Margin:    2.8  dB
Connection Rate:  13671  Kbps
Line Attenuation: 35.0  dB
Power:            0.0  dBm
Max Rate:        15952  Kbps

SF:              101075827
SF Errors:        6476
Reed Solomon:    254955710
RS Corrected:    65523189
RS Un-Corrected:  451195
HEC:              3538
Errored Seconds:  2559
Severe ES:        80
Interleave Depth: 64
Upstream:
Noise Margin:    6.5  dB
Connection Rate:  1199  Kbps
Line Attenuation: 15.4  dB
Power:            12.9  dBm
Max Rate:        1212  Kbps

SF:              96565766
SF Errors:        0
Reed Solomon:    1002342
RS Corrected:    0
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 4
Total Up Time (From SF count):
  19 days, 21:20:15

CRC:  6476
LOS:  0
LOF:  0
ES :  2559

Bytes Transferred (ppp0):
  Tx: 57470270 (54.8 MiB)
  Rx: 682798739 (651.1 MiB)