New UCD in effect - anything to worry about?

[Jon22]

Hi everyone, just been having a quick look in the event log and the message "New UCD in effect" has lots of entries for today.


First Time Last Time Priority Description
Tue Aug 23 14:11:40 2011 Tue Aug 23 14:11:40 2011 Information (7) New UCD in effect
Tue Aug 23 14:11:40 2011 Tue Aug 23 14:11:40 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:11:23 2011 Tue Aug 23 14:11:23 2011 Information (7) New UCD in effect
Tue Aug 23 14:11:23 2011 Tue Aug 23 14:11:23 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:02:48 2011 Tue Aug 23 14:02:48 2011 Information (7) New UCD in effect
Tue Aug 23 14:02:48 2011 Tue Aug 23 14:02:48 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:02:31 2011 Tue Aug 23 14:02:31 2011 Information (7) New UCD in effect
Tue Aug 23 14:02:31 2011 Tue Aug 23 14:02:31 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:00:50 2011 Tue Aug 23 14:00:50 2011 Information (7) New UCD in effect
Tue Aug 23 14:00:50 2011 Tue Aug 23 14:00:50 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:00:34 2011 Tue Aug 23 14:00:34 2011 Information (7) New UCD in effect
Tue Aug 23 14:00:34 2011 Tue Aug 23 14:00:34 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 13:59:19 2011 Tue Aug 23 13:59:19 2011 Information (7) New UCD in effect
Tue Aug 23 13:59:19 2011 Tue Aug 23 13:59:19 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 13:58:57 2011 Tue Aug 23 13:58:57 2011 Information (7) New UCD in effect
Tue Aug 23 13:58:57 2011 Tue Aug 23 13:58:57 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 13:55:12 2011 Tue Aug 23 13:55:12 2011 Information (7) New UCD in effect
Tue Aug 23 13:55:12 2011 Tue Aug 23 13:55:12 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 13:54:54 2011 Tue Aug 23 13:54:54 2011 Information (7) New UCD in effect
Tue Aug 23 13:54:54 2011 Tue Aug 23 13:54:54 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 13:42:00 2011 Tue Aug 23 13:42:00 2011 Information (7) New UCD in effect
Tue Aug 23 13:42:00 2011 Tue Aug 23 13:42:00 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 13:41:44 2011 Tue Aug 23 13:41:44 2011 Information (7) New UCD in effect
Tue Aug 23 13:41:44 2011 Tue Aug 23 13:41:44 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 11:07:04 2011 Tue Aug 23 11:07:04 2011 Information (7) New UCD in effect
Tue Aug 23 11:07:04 2011 Tue Aug 23 11:07:04 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 11:06:45 2011 Tue Aug 23 11:06:45 2011 Information (7) New UCD in effect
Tue Aug 23 11:06:45 2011 Tue Aug 23 11:06:45 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 11:03:42 2011 Tue Aug 23 11:03:42 2011 Information (7) New UCD in effect
Tue Aug 23 11:03:42 2011 Tue Aug 23 11:03:42 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 11:03:27 2011 Tue Aug 23 11:03:27 2011 Information (7) New UCD in effect
Tue Aug 23 11:03:27 2011 Tue Aug 23 11:03:27 2011 Information (7) Starting on-the-fly UCD change.

I don't appear to be having any problems other than the occasional bit of lag in online games. Just wondering what it signifies?

And some more:


First Time Last Time Priority Description
Tue Aug 23 15:49:20 2011 Tue Aug 23 15:49:20 2011 Information (7) New UCD in effect
Tue Aug 23 15:49:20 2011 Tue Aug 23 15:49:20 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:49:05 2011 Tue Aug 23 15:49:05 2011 Information (7) New UCD in effect
Tue Aug 23 15:49:05 2011 Tue Aug 23 15:49:05 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:32:09 2011 Tue Aug 23 15:32:09 2011 Information (7) New UCD in effect
Tue Aug 23 15:32:09 2011 Tue Aug 23 15:32:09 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:31:53 2011 Tue Aug 23 15:31:53 2011 Information (7) New UCD in effect
Tue Aug 23 15:31:53 2011 Tue Aug 23 15:31:53 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:28:31 2011 Tue Aug 23 15:28:31 2011 Information (7) New UCD in effect
Tue Aug 23 15:28:31 2011 Tue Aug 23 15:28:31 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:28:14 2011 Tue Aug 23 15:28:14 2011 Information (7) New UCD in effect
Tue Aug 23 15:28:14 2011 Tue Aug 23 15:28:14 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:26:55 2011 Tue Aug 23 15:26:55 2011 Information (7) New UCD in effect
Tue Aug 23 15:26:55 2011 Tue Aug 23 15:26:55 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:26:38 2011 Tue Aug 23 15:26:38 2011 Information (7) New UCD in effect
Tue Aug 23 15:26:38 2011 Tue Aug 23 15:26:38 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:26:19 2011 Tue Aug 23 15:26:19 2011 Information (7) New UCD in effect
Tue Aug 23 15:26:19 2011 Tue Aug 23 15:26:19 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:26:02 2011 Tue Aug 23 15:26:02 2011 Information (7) New UCD in effect
Tue Aug 23 15:26:02 2011 Tue Aug 23 15:26:02 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:25:44 2011 Tue Aug 23 15:25:44 2011 Information (7) New UCD in effect
Tue Aug 23 15:25:44 2011 Tue Aug 23 15:25:44 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:25:23 2011 Tue Aug 23 15:25:23 2011 Information (7) New UCD in effect
Tue Aug 23 15:25:23 2011 Tue Aug 23 15:25:23 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 15:25:06 2011 Tue Aug 23 15:25:06 2011 Information (7) New UCD in effect
Tue Aug 23 15:25:06 2011 Tue Aug 23 15:25:06 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:58:19 2011 Tue Aug 23 14:58:19 2011 Information (7) New UCD in effect
Tue Aug 23 14:58:19 2011 Tue Aug 23 14:58:19 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:58:03 2011 Tue Aug 23 14:58:03 2011 Information (7) New UCD in effect
Tue Aug 23 14:58:03 2011 Tue Aug 23 14:58:03 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 14:56:29 2011 Tue Aug 23 14:56:29 2011 Information (7) New UCD in effect
Tue Aug 23 14:56:29 2011 Tue Aug 23 14:56:29 2011 Information (7) Starting on-the-fly UCD change.

[Jon22]

Still getting frequent messages about this in the event log.

First Time Last Time Priority Description
Tue Aug 23 23:09:17 2011 Tue Aug 23 23:09:17 2011 Information (7) New UCD in effect
Tue Aug 23 23:09:17 2011 Tue Aug 23 23:09:17 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 23:09:02 2011 Tue Aug 23 23:09:02 2011 Information (7) New UCD in effect
Tue Aug 23 23:09:02 2011 Tue Aug 23 23:09:02 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 20:41:39 2011 Tue Aug 23 20:41:39 2011 Information (7) New UCD in effect
Tue Aug 23 20:41:39 2011 Tue Aug 23 20:41:39 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 20:41:23 2011 Tue Aug 23 20:41:23 2011 Information (7) New UCD in effect
Tue Aug 23 20:41:23 2011 Tue Aug 23 20:41:23 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 20:38:50 2011 Tue Aug 23 20:38:50 2011 Information (7) New UCD in effect
Tue Aug 23 20:38:50 2011 Tue Aug 23 20:38:50 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 20:38:34 2011 Tue Aug 23 20:38:34 2011 Information (7) New UCD in effect
Tue Aug 23 20:38:34 2011 Tue Aug 23 20:38:34 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 19:03:08 2011 Tue Aug 23 19:03:08 2011 Information (7) New UCD in effect
Tue Aug 23 19:03:08 2011 Tue Aug 23 19:03:08 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 19:02:51 2011 Tue Aug 23 19:02:51 2011 Information (7) New UCD in effect
Tue Aug 23 19:02:50 2011 Tue Aug 23 19:02:50 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 18:12:27 2011 Tue Aug 23 18:12:27 2011 Information (7) New UCD in effect
Tue Aug 23 18:12:27 2011 Tue Aug 23 18:12:27 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 18:12:11 2011 Tue Aug 23 18:12:11 2011 Information (7) New UCD in effect
Tue Aug 23 18:12:11 2011 Tue Aug 23 18:12:11 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 17:01:06 2011 Tue Aug 23 17:01:06 2011 Information (7) New UCD in effect
Tue Aug 23 17:01:06 2011 Tue Aug 23 17:01:06 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 17:00:49 2011 Tue Aug 23 17:00:49 2011 Information (7) New UCD in effect
Tue Aug 23 17:00:49 2011 Tue Aug 23 17:00:49 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 16:49:22 2011 Tue Aug 23 16:49:22 2011 Information (7) New UCD in effect
Tue Aug 23 16:49:22 2011 Tue Aug 23 16:49:22 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 16:49:06 2011 Tue Aug 23 16:49:06 2011 Information (7) New UCD in effect
Tue Aug 23 16:49:06 2011 Tue Aug 23 16:49:06 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 16:26:27 2011 Tue Aug 23 16:26:27 2011 Information (7) New UCD in effect
Tue Aug 23 16:26:27 2011 Tue Aug 23 16:26:27 2011 Information (7) Starting on-the-fly UCD change.
Tue Aug 23 16:26:11 2011 Tue Aug 23 16:26:11 2011 Information (7) New UCD in effect
Tue Aug 23 16:26:11 2011 Tue Aug 23 16:26:11 2011 Information (7) Starting on-the-fly UCD change.

Power levels seem fine.

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 6
Downstream Frequency : 330750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 0.0 dBmV
Downstream SNR : 37.1 dB

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 25800000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 44.0 dBmV
Upstream Mini-Slot Size : 2

I've had a search of the forum and it looks as though the "new ucd in effect" message is due to the upstream channel changing? Surely it shouldn't be changing so frequently?

[DABhand]

Yeah met that already tonight, caused my modem to desynch from the uBR a few times.

It forces people onto new modulations that aren't "having problems" which of course means it will force everyone onto the new modulation lol

I.e. an excuse to get everyone onto QPSK modulation from QAM16.

[SmartMart]

I've had a search of the forum and it looks as though the "new ucd in effect" message is due to the upstream channel changing? Surely it shouldn't be changing so frequently?This is usually caused by noise on the line and is not normally anything to be concerned about but, considering how often it's happening, it could indicate a problem that needs investigating by VM. Best course of action would be to post your log messages in the VM online support forum and see what their techies come back with.

Regards

[Jon22]

OK, done. Thanks.

[Jon22]

Looks like the modem lost sync briefly earlier on.

First Time Last Time Priority Description
Wed Aug 24 14:37:17 2011 Wed Aug 24 14:37:17 2011 Information (7) New UCD in effect
Wed Aug 24 14:37:17 2011 Wed Aug 24 14:37:17 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:37:03 2011 Wed Aug 24 14:37:03 2011 Information (7) New UCD in effect
Wed Aug 24 14:37:03 2011 Wed Aug 24 14:37:03 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:37:03 2011 Wed Aug 24 14:37:03 2011 Information (7) Downstream sync ok
Wed Aug 24 14:37:03 2011 Wed Aug 24 14:37:03 2011 Information (7) locked and synced to rescue CMTS...all is well!
Wed Aug 24 14:37:03 2011 Wed Aug 24 14:37:03 2011 Information (7) Downstream sync ok
Wed Aug 24 14:37:02 2011 Wed Aug 24 14:37:02 2011 Information (7) Locked on the rescue CMTS ds. try to re-acquire ds sync...
Wed Aug 24 14:37:02 2011 Wed Aug 24 14:37:02 2011 Information (7) Downstream lock ok
Wed Aug 24 14:37:01 2011 Wed Aug 24 14:37:01 2011 Information (7) Downstream lock failed
Wed Aug 24 14:37:01 2011 Wed Aug 24 14:37:01 2011 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC f...
Wed Aug 24 14:36:59 2011 Wed Aug 24 14:36:59 2011 Information (7) Downstream lock failed
Wed Aug 24 14:17:21 2011 Wed Aug 24 14:17:21 2011 Information (7) New UCD in effect
Wed Aug 24 14:17:21 2011 Wed Aug 24 14:17:21 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:16:59 2011 Wed Aug 24 14:16:59 2011 Information (7) New UCD in effect
Wed Aug 24 14:16:59 2011 Wed Aug 24 14:16:59 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:07:38 2011 Wed Aug 24 14:07:38 2011 Information (7) New UCD in effect
Wed Aug 24 14:07:38 2011 Wed Aug 24 14:07:38 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:07:22 2011 Wed Aug 24 14:07:22 2011 Information (7) New UCD in effect
Wed Aug 24 14:07:22 2011 Wed Aug 24 14:07:22 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:06:42 2011 Wed Aug 24 14:06:42 2011 Information (7) New UCD in effect
Wed Aug 24 14:06:42 2011 Wed Aug 24 14:06:42 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:06:24 2011 Wed Aug 24 14:06:24 2011 Information (7) New UCD in effect
Wed Aug 24 14:06:24 2011 Wed Aug 24 14:06:24 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:05:22 2011 Wed Aug 24 14:05:22 2011 Information (7) New UCD in effect
Wed Aug 24 14:05:22 2011 Wed Aug 24 14:05:22 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:05:05 2011 Wed Aug 24 14:05:05 2011 Information (7) New UCD in effect
Wed Aug 24 14:05:05 2011 Wed Aug 24 14:05:05 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:04:29 2011 Wed Aug 24 14:04:29 2011 Information (7) New UCD in effect
Wed Aug 24 14:04:29 2011 Wed Aug 24 14:04:29 2011 Information (7) Starting on-the-fly UCD change.
Wed Aug 24 14:03:54 2011 Wed Aug 24 14:03:54 2011 Information (7) New UCD in effect
Wed Aug 24 14:03:54 2011 Wed Aug 24 14:03:54 2011 Information (7) Starting on-the-fly UCD change.

[Jon22]

Not sure if anyone is interested but the modem rebooted again this morning.


First Time Last Time Priority Description
Thu Aug 25 09:32:38 2011 Thu Aug 25 09:32:38 2011 Information (7) CableModem software upgrade failed
Thu Aug 25 09:32:38 2011 Thu Aug 25 09:32:38 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Thu Aug 25 09:32:38 2011 Thu Aug 25 09:32:38 2011 Information (7) SW dload: Invalid image signature!
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Notice (6) SW Download INIT - Via Config file DHSUBsgvca69834ncxv9
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) CableModem software download started
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) Software upgrade has started.
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) A software upgrade filename was specified in the config file.
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) Authorized
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) Registration complete!
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) Received a REG-RSP message from the CMTS...
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) Sending a REG-REQ to the CMTS...
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) CableModem SNMP configure complete
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) IP init completed ok
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) CableModem TFTP init ok
Thu Aug 25 09:31:57 2011 Thu Aug 25 09:31:57 2011 Information (7) CableModem DHCP client init ok
Thu Aug 25 09:31:57 2011 Thu Aug 25 09:31:57 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Thu Aug 25 09:31:51 2011 Thu Aug 25 09:31:51 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:51 2011 Thu Aug 25 09:31:51 2011 Information (7) Beginning initial ranging...
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Error (4) No initial ranging response from CMTS.
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Critical (3) Init RANGING Critical Ranging Request Retries exhausted
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:46 2011 Thu Aug 25 09:31:46 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:46 2011 Thu Aug 25 09:31:46 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:45 2011 Thu Aug 25 09:31:45 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:45 2011 Thu Aug 25 09:31:45 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:41 2011 Thu Aug 25 09:31:41 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:41 2011 Thu Aug 25 09:31:41 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:37 2011 Thu Aug 25 09:31:37 2011 Information (7) New UCD in effect
Thu Aug 25 09:31:37 2011 Thu Aug 25 09:31:37 2011 Information (7) Starting on-the-fly UCD change.
Thu Aug 25 09:31:37 2011 Thu Aug 25 09:31:37 2011 Information (7) MAP w/initial maintenance region received

Upstream power level has gone up a bit and I've been switched to QPSK.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 4
Upstream Frequency : 29200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 46.5 dBmV
Upstream Mini-Slot Size : 2

I've also been using the thinkbroadband ping monitor which shows this (ignore the 100% packet loss on the right, it stopped updating for some reason):

https://www.cableforum.co.uk/images/local/2011/08/18.png (http://www.thinkbroadband.com/ping/share/f950015e58668bcd41aef269a7c8506f.html)

[SmartMart]

I'm interested but unfortunately there's nothing I can do about it apart from offer advice. I had a similar issue a while ago and, just by pure chance, I found the cause of the problem: I discovered that the white cable running from the modem to the splitter was running parallel to a mains cable. Not only was it running parallel, it was touching for several feet. Once I moved the power cable away, the problem disappeared. In my case, it would appear that the modem cable was picking up interference (noise) from the power cable. Perhaps you should have a close look at all your cables.

Regards

[Jon22]

I'm interested but unfortunately there's nothing I can do about it apart from offer advice. I had a similar issue a while ago and, just by pure chance, I found the cause of the problem: I discovered that the white cable running from the modem to the splitter was running parallel to a mains cable. Not only was it running parallel, it was touching for several feet. Once I moved the power cable away, the problem disappeared. In my case, it would appear that the modem cable was picking up interference (noise) from the power cable. Perhaps you should have a close look at all your cables.

Regards

Thanks for the help and advice so far. The cable only runs parallel to a mains cable for just a few cms so I don't think that would be the cause. Oddly everything seems ok now that the upstream has changed to QPSK. I'm guessing there must be some noise (like you said) on the network, as QAM16 just isn't stable.

[Jon22]

Well one week on and I've still had no reply on the Virgin forum. Got switched back to QAM16 on Wednesday and the "New UCD in effect" messages started appearing in the event log again. Today (Thursday) the modem lost sync twice, once around lunchtime and again in the early evening. Thinkbroadband ping monitor shows it nicely:

http://www.thinkbroadband.com/ping/share-thumb/84e6a75ec7c7a3f5e3694914702d329c-01-09-2011.png (http://www.thinkbroadband.com/ping/share/84e6a75ec7c7a3f5e3694914702d329c-01-09-2011.html)

I've now been dumped back on to QPSK.

[Jon22]

Connection is poor today. For the last hour or so it seems to keep losing sync.

Cable Modem Event Log
First Time Last Time Priority Description
Mon Sep 05 14:00:27 2011 Mon Sep 05 14:00:27 2011 Information (7) CableModem software upgrade failed
Mon Sep 05 14:00:27 2011 Mon Sep 05 14:00:27 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Mon Sep 05 14:00:27 2011 Mon Sep 05 14:00:27 2011 Information (7) SW dload: Invalid image signature!
Mon Sep 05 14:00:25 2011 Mon Sep 05 14:00:25 2011 Notice (6) SW Download INIT - Via Config file rkldJKDHSUBsgvca6983
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) CableModem software download started
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) Software upgrade has started.
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) A software upgrade filename was specified in the config file.
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) Authorized
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) Registration complete!
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) Received a REG-RSP message from the CMTS...
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) Sending a REG-REQ to the CMTS...
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) CableModem SNMP configure complete
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) IP init completed ok
Mon Sep 05 14:00:24 2011 Mon Sep 05 14:00:24 2011 Information (7) CableModem TFTP init ok
Mon Sep 05 14:00:22 2011 Mon Sep 05 14:00:22 2011 Information (7) CableModem DHCP client init ok
Mon Sep 05 14:00:22 2011 Mon Sep 05 14:00:22 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Mon Sep 05 14:00:18 2011 Mon Sep 05 14:00:18 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 14:00:17 2011 Mon Sep 05 14:00:17 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 14:00:17 2011 Mon Sep 05 14:00:17 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 14:00:09 2011 Mon Sep 05 14:00:09 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 14:00:09 2011 Mon Sep 05 14:00:09 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 14:00:00 2011 Mon Sep 05 14:00:00 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 14:00:00 2011 Mon Sep 05 14:00:00 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 13:59:52 2011 Mon Sep 05 13:59:52 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 13:59:52 2011 Mon Sep 05 13:59:52 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 13:59:47 2011 Mon Sep 05 13:59:47 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 13:59:47 2011 Mon Sep 05 13:59:47 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 13:59:39 2011 Mon Sep 05 13:59:39 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 13:59:39 2011 Mon Sep 05 13:59:39 2011 Information (7) MAP w/initial maintenance region received
Mon Sep 05 13:59:30 2011 Mon Sep 05 13:59:30 2011 Critical (3) No Ranging Response received - T3 time-out
Mon Sep 05 13:59:30 2011 Mon Sep 05 13:59:30 2011 Information (7) MAP w/initial maintenance region received

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 61.0 dBmV
Upstream Mini-Slot Size : 2

Upstream power is really high, highest I've ever seen it. It also seems to be fluctuating between 58 and 61dBmV within a few minutes. Wouldn't be surprised if it loses sync again soon. Any ideas what could be causing it. Noise in the network?

[Sephiroth]

It's a borked upstream. I notice that you're in a DOCSIS area rather than EuroDOCSIS *6MHz wide DS channel rather than 8 MHz). It means that the infrastructure is prolly strained and creaking, particularly the upstream lasers.

Defo a schmucked upstream. VM must fix this.

[Ignitionnet]

Most of the legacy network is DOCSIS Seph. Only ex-Cable and Wireless areas, about 1/3rd, use EuroDOCSIS for the legacy network due to the line cards in use.

[Sephiroth]

His upstream is well borked, though.

[Jon22]

Thanks for the replies guys. Surprisingly the connection hasn't lost sync since although the upstream power is now a solid 61dBmV. I'm amazed that it's still coping. Any pointers in how I get VM to sort this? I do have a thread running on the VM community forum (here (http://community.virginmedia.com/t5/Fibre-optic-broadband-cable/New-UCD-in-effect-anything-to-worry-about/m-p/702543#M95006)) but I haven't had any help as such so far.

[Jon22]

Right guys, now this is going to sound stupid, but I've been having a look at the connections. Everything seems fine in the brown wall box, so I went to have a look under the metal cover in the pavement and there appears to be an ants nest in there. I know its clutching at straws but you don't think that that could have anything to do with it? Damaged the cable? Yes I know it sounds stupid lol.

[Sephiroth]

I think you'd need to shine a torch into the drop point and see if water's lying there or if the ants have indeed chewed through/into the cable. Aren't ants filled with formic acid or something?

In the first instance, though, you're looking for corrosion, IMO.

Also kill them with that ant spray you get in Sainsbury's. They can't be doing any good!

[Jon22]

I've cleared the ants out along with quite a bit of mud. The bit of cable that I could see looked fine. Didn't appear to be any lying water in there. The problem must be on VM's end now unless the modem has gone dodgy. Upstream is still sitting at a solid 61 dBmV.

[Jon22]

Just had a quick look at the service status page and it is actually showing a fault reference number for disrupted broadband service. Perhaps their aware of a problem, assuming that is what the number is relating to.

Infact it may very well be as the upstream power has come down a smidge to 59.5 dBmV, still high but atleast its going the right way.

[Jon22]

Looks as though they have been doing some work as I've gone from one extreme to another now.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 27.5 dBmV
Upstream Mini-Slot Size :2

Is it likely that the upstream power levels will rise by themselves once any work has finished or am I going to need an engineer out?

[Sephiroth]

Who knows? This sort of problem is usually on VM's property, like a street cabinet or optical node. An engineer to your home can accomplosh little with the upstream.

Of course we don't see wjhat you see, like the event log and downstream stats.

[Jon22]

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 6
Downstream Frequency : 330750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 1.3 dBmV
Downstream SNR : 37.1 dB

Been consistent through out.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 28.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Event Log
First Time Last Time Priority Description
Thu Sep 08 15:12:28 2011 Thu Sep 08 15:12:28 2011 Information (7) New UCD in effect
Thu Sep 08 15:12:28 2011 Thu Sep 08 15:12:28 2011 Information (7) Starting on-the-fly UCD change.
Thu Sep 08 15:10:47 2011 Thu Sep 08 15:10:47 2011 Information (7) New UCD in effect
Thu Sep 08 15:10:47 2011 Thu Sep 08 15:10:47 2011 Information (7) Starting on-the-fly UCD change.
Thu Sep 08 15:07:57 2011 Thu Sep 08 15:07:57 2011 Information (7) New UCD in effect
Thu Sep 08 15:07:57 2011 Thu Sep 08 15:07:57 2011 Information (7) Starting on-the-fly UCD change.
Thu Sep 08 14:59:52 2011 Thu Sep 08 14:59:52 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Thu Sep 08 14:59:51 2011 Thu Sep 08 14:59:51 2011 Information (7) New UCD in effect
Thu Sep 08 14:59:51 2011 Thu Sep 08 14:59:51 2011 Information (7) Starting on-the-fly UCD change.
Thu Sep 08 14:59:51 2011 Thu Sep 08 14:59:51 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Thu Sep 08 12:00:05 2011 Thu Sep 08 12:00:05 2011 Information (7) New UCD in effect
Thu Sep 08 12:00:05 2011 Thu Sep 08 12:00:05 2011 Information (7) Starting on-the-fly UCD change.
Thu Sep 08 11:56:25 2011 Thu Sep 08 11:56:25 2011 Information (7) New UCD in effect
Thu Sep 08 11:56:25 2011 Thu Sep 08 11:56:25 2011 Information (7) Starting on-the-fly UCD change.
Thu Sep 08 10:04:28 2011 Thu Sep 08 10:04:28 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Wed Sep 07 10:11:36 2011 Wed Sep 07 10:11:36 2011 Information (7) CableModem software upgrade failed
Wed Sep 07 10:11:36 2011 Wed Sep 07 10:11:36 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Wed Sep 07 10:11:36 2011 Wed Sep 07 10:11:36 2011 Information (7) SW dload: Invalid image signature!
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Notice (6) SW Download INIT - Via Config file kfoA,.iyewrkldJKDHSU
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) CableModem software download started
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) Software upgrade has started.
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) A software upgrade filename was specified in the config file.
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) Authorized
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) Registration complete!
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) Received a REG-RSP message from the CMTS...
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) Sending a REG-REQ to the CMTS...
Wed Sep 07 10:11:33 2011 Wed Sep 07 10:11:33 2011 Information (7) CableModem SNMP configure complete
Wed Sep 07 10:11:32 2011 Wed Sep 07 10:11:32 2011 Information (7) IP init completed ok
Wed Sep 07 10:11:32 2011 Wed Sep 07 10:11:32 2011 Information (7) CableModem TFTP init ok
Wed Sep 07 10:11:23 2011 Wed Sep 07 10:11:23 2011 Information (7) CableModem DHCP client init ok
Wed Sep 07 10:11:23 2011 Wed Sep 07 10:11:23 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.

Thinkbroadband ping monitor. Shows quite a bit of packet loss earlier on.

http://www.thinkbroadband.com/ping/share-thumb/8abdc3026621dc59b24ef5fb1902f91c-09-09-2011.png (http://www.thinkbroadband.com/ping/share/8abdc3026621dc59b24ef5fb1902f91c-09-09-2011.html)

Still waiting for a reply on the VM forum to see what they say.

[Sephiroth]

Thanks for that. The downstream doesn't show any irregularity in the stats, as of course you knew.

The upstream displays the same problems as before - the effects of line noise (which you can see by the dropped packets.

Why has the modem flipped to low power? First, to explain that low power on the intended data stream gives noise (from any source) a good chance. We are seeing this.

When you had high power, it was commanded by the CMTS because it need the power to drive initial ranging data. The CMTS then decides on the power level it needs to overcome attenuation (anywheere in the works).

The CMTS is not going to command such low power because for a start, the CMTS expects to see a signal arriving at around no lower than the 20 dBmv mark (thereabouts, lower for QPSK - someone will correct me if necessary). There's more than 8 dB attenuation between your gaff and the CMTS.

So either the modem isn't seeing power raise commands from the CMTS at initial ranging, or it can't deliver the power because it's defective (and maybe made so by sitting for so long at the 60 dBmv earlier).

So I take back what I said earlier and your next move might be to get the modem swapped out.

[thenry]

get upgraded to 30Mb for the issues your having to endure.

[Jon22]

Thanks for the explanation Seph, just have to wait and see what the techs say on the VM forum.

[Taf]

I had a long-standing upload speed problem on the 30mbps service. Typically I got 0.2mbps on all 4 machines wired to the SH (instead of the promised 3mbps).

An attenuator on the input seemed to help, but it soon dropped back.

A replacement SH arrived and it brought 3 of the 4 machines to full 3mbps upload speed.

BUT the fourth machine, almost the exact spec as the other 3, and on about the same cable length in the home, refuses to get above 0.2mbps. Cable changes, changing ports on the SH have no effect at all, so I think it must be a Vista problem or a screwy network card.

I googled for answers and found that Vista UL speed problems are rife, but none of the procedures to fix this have helped (including several TCP/IP "optimistaion" programs.

[Jon22]

Just a little update, upstream levels have now gone back to normal and I'm also now on QAM16.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 45.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Event Log
First Time Last Time Priority Description
Fri Sep 09 13:59:36 2011 Fri Sep 09 13:59:36 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Sep 09 13:58:37 2011 Fri Sep 09 13:58:37 2011 Information (7) New UCD in effect
Fri Sep 09 13:58:37 2011 Fri Sep 09 13:58:37 2011 Information (7) Starting on-the-fly UCD change.
Fri Sep 09 13:57:37 2011 Fri Sep 09 13:57:37 2011 Information (7) New UCD in effect
Fri Sep 09 13:57:37 2011 Fri Sep 09 13:57:37 2011 Information (7) Starting on-the-fly UCD change.
Fri Sep 09 13:57:07 2011 Fri Sep 09 13:57:07 2011 Information (7) New UCD in effect
Fri Sep 09 13:57:07 2011 Fri Sep 09 13:57:07 2011 Information (7) Starting on-the-fly UCD change.
Fri Sep 09 12:44:58 2011 Fri Sep 09 12:44:58 2011 Information (7) CableModem software upgrade failed
Fri Sep 09 12:44:58 2011 Fri Sep 09 12:44:58 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Fri Sep 09 12:44:58 2011 Fri Sep 09 12:44:58 2011 Information (7) SW dload: Invalid image signature!
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Notice (6) SW Download INIT - Via Config file 87dsfd;kfoA,.iyewrkl
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Information (7) CableModem software download started
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Information (7) Software upgrade has started.
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Information (7) A software upgrade filename was specified in the config file.
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Authorized
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Registration complete!
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Received a REG-RSP message from the CMTS...
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Sending a REG-REQ to the CMTS...
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) CableModem SNMP configure complete
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) IP init completed ok
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) CableModem TFTP init ok
Time Not Established Time Not Established Information (7) CableModem DHCP client init ok
Time Not Established Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Time Not Established Information (7) MAP w/initial maintenance region received
Time Not Established Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Time Not Established Information (7) MAP w/initial maintenance region received
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) Beginning initial ranging...
Time Not Established Time Not Established Information (7) downstream time sync acquired...
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) starting ds time sync acquisition...

Weird...

[Jon22]

Well after a few days of stability, it looks as though I'm back to losing sync every now again and back on QPSK.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 47.5 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Event Log
First Time Last Time Priority Description
Tue Sep 13 13:17:21 2011 Tue Sep 13 13:17:21 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Tue Sep 13 11:40:29 2011 Tue Sep 13 11:40:29 2011 Information (7) CableModem software upgrade failed
Tue Sep 13 11:40:29 2011 Tue Sep 13 11:40:29 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Tue Sep 13 11:40:29 2011 Tue Sep 13 11:40:29 2011 Information (7) SW dload: Invalid image signature!
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Notice (6) SW Download INIT - Via Config file dsfd;kfoA,.iyewrkldJ
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) CableModem software download started
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) Software upgrade has started.
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) A software upgrade filename was specified in the config file.
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) Authorized
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) Registration complete!
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) Received a REG-RSP message from the CMTS...
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) Sending a REG-REQ to the CMTS...
Tue Sep 13 11:40:25 2011 Tue Sep 13 11:40:25 2011 Information (7) CableModem SNMP configure complete
Tue Sep 13 11:40:24 2011 Tue Sep 13 11:40:24 2011 Information (7) IP init completed ok
Tue Sep 13 11:40:24 2011 Tue Sep 13 11:40:24 2011 Information (7) CableModem TFTP init ok
Tue Sep 13 11:39:45 2011 Tue Sep 13 11:39:45 2011 Information (7) CableModem DHCP client init ok
Tue Sep 13 11:39:45 2011 Tue Sep 13 11:39:45 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Tue Sep 13 11:39:37 2011 Tue Sep 13 11:39:37 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 13 11:39:30 2011 Tue Sep 13 11:39:30 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 13 11:39:30 2011 Tue Sep 13 11:39:30 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 13 11:39:29 2011 Tue Sep 13 11:39:29 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 13 11:39:29 2011 Tue Sep 13 11:39:29 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 13 11:39:28 2011 Tue Sep 13 11:39:28 2011 Information (7) Downstream sync ok
Tue Sep 13 11:39:28 2011 Tue Sep 13 11:39:28 2011 Information (7) Beginning initial ranging...
Tue Sep 13 11:39:28 2011 Tue Sep 13 11:39:28 2011 Information (7) downstream time sync acquired...
Tue Sep 13 11:39:28 2011 Tue Sep 13 11:39:28 2011 Information (7) Downstream sync ok
Tue Sep 13 11:39:27 2011 Tue Sep 13 11:39:27 2011 Information (7) starting ds time sync acquisition...
Tue Sep 13 11:39:25 2011 Tue Sep 13 11:39:25 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 13 11:39:14 2011 Tue Sep 13 11:39:14 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 13 11:39:14 2011 Tue Sep 13 11:39:14 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 13 11:39:03 2011 Tue Sep 13 11:39:03 2011 Critical (3) No Ranging Response received - T3 time-out


http://www.thinkbroadband.com/ping/share-thumb/16cd47bd8577722c044277e3ac37826e-13-09-2011.png (http://www.thinkbroadband.com/ping/share/16cd47bd8577722c044277e3ac37826e-13-09-2011.html)

[Jon22]

Had a reply from VM tech support and they want to send an engineer round due to:

"I have taken a look at your connection and can see your modem is reporting an extremely high number of power adjustments. I have also checked a number of other customers modems who are connected to the same upstream as you and they do not display the same symptoms, this would indicate a local issue."

I just hope the engineer doesn't replace the modem with one of the non-superhubs (VMDG280).

Although I've got to wait until next Monday for the engineer to come.

[Mick Fisher]

Had a reply from VM tech support and they want to send an engineer round due to:

"I have taken a look at your connection and can see your modem is reporting an extremely high number of power adjustments. I have also checked a number of other customers modems who are connected to the same upstream as you and they do not display the same symptoms, this would indicate a local issue."

I just hope the engineer doesn't replace the modem with one of the non-superhubs (VMDG280).

Although I've got to wait until next Monday for the engineer to come.
I would think he is bound to. :)

If it's any consolation I was surprised to find the VMDG280 to rock solid. Note my wireless devices are only in an adjacent room about 10 ft and a single brick construction wall away. It was not until I started to use a superhub that all the problems occurred.

[Jon22]

Thanks Mick. From what tech support have said, is it looking likely that its just a borked modem (even though it works fine most of the time) or something between the modem and street cabinet?

[Jon22]

Getting some wild upstream power fluctuations today.

20/9/11
13:00

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 53.5 dBmV
Upstream Mini-Slot Size : 2

13:35
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 44.0 dBmV
Upstream Mini-Slot Size : 2

Lost sync 14:50. Re-sync 14:56.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 48.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Event Log
First Time Last Time Priority Description
Tue Sep 20 13:55:37 2011 Tue Sep 20 13:55:37 2011 Information (7) CableModem software upgrade failed
Tue Sep 20 13:55:37 2011 Tue Sep 20 13:55:37 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Tue Sep 20 13:55:37 2011 Tue Sep 20 13:55:37 2011 Information (7) SW dload: Invalid image signature!
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Notice (6) SW Download INIT - Via Config file 3254k;fg87dsfd;kfoA,
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) CableModem software download started
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) Software upgrade has started.
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) A software upgrade filename was specified in the config file.
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) Authorized
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) Registration complete!
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) Received a REG-RSP message from the CMTS...
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) Sending a REG-REQ to the CMTS...
Tue Sep 20 13:55:34 2011 Tue Sep 20 13:55:34 2011 Information (7) CableModem SNMP configure complete
Tue Sep 20 13:55:33 2011 Tue Sep 20 13:55:33 2011 Information (7) IP init completed ok
Tue Sep 20 13:55:33 2011 Tue Sep 20 13:55:33 2011 Information (7) CableModem TFTP init ok
Tue Sep 20 13:55:33 2011 Tue Sep 20 13:55:33 2011 Information (7) CableModem DHCP client init ok
Tue Sep 20 13:55:33 2011 Tue Sep 20 13:55:33 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Tue Sep 20 13:55:26 2011 Tue Sep 20 13:55:26 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 13:55:25 2011 Tue Sep 20 13:55:25 2011 Information (7) Beginning initial ranging...
Tue Sep 20 13:55:22 2011 Tue Sep 20 13:55:22 2011 Error (4) No initial ranging response from CMTS.
Tue Sep 20 13:55:22 2011 Tue Sep 20 13:55:22 2011 Critical (3) Init RANGING Critical Ranging Request Retries exhausted
Tue Sep 20 13:55:22 2011 Tue Sep 20 13:55:22 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 13:55:22 2011 Tue Sep 20 13:55:22 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 13:55:17 2011 Tue Sep 20 13:55:17 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 13:55:17 2011 Tue Sep 20 13:55:17 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 13:55:16 2011 Tue Sep 20 13:55:16 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 13:55:16 2011 Tue Sep 20 13:55:16 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 13:55:15 2011 Tue Sep 20 13:55:15 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 13:55:15 2011 Tue Sep 20 13:55:15 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 13:55:15 2011 Tue Sep 20 13:55:15 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 13:55:15 2011 Tue Sep 20 13:55:15 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 13:55:09 2011 Tue Sep 20 13:55:09 2011 Critical (3) No Ranging Response received - T3 time-out

Lost sync 15:10. Re-sync 15:15.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 42.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Event Log
First Time Last Time Priority Description
Tue Sep 20 14:14:48 2011 Tue Sep 20 14:14:48 2011 Information (7) CableModem software upgrade failed
Tue Sep 20 14:14:48 2011 Tue Sep 20 14:14:48 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Tue Sep 20 14:14:48 2011 Tue Sep 20 14:14:48 2011 Information (7) SW dload: Invalid image signature!
Tue Sep 20 14:14:45 2011 Tue Sep 20 14:14:45 2011 Notice (6) SW Download INIT - Via Config file 54k;fg87dsfd;kfoA,.i
Tue Sep 20 14:14:45 2011 Tue Sep 20 14:14:45 2011 Information (7) CableModem software download started
Tue Sep 20 14:14:45 2011 Tue Sep 20 14:14:45 2011 Information (7) Software upgrade has started.
Tue Sep 20 14:14:45 2011 Tue Sep 20 14:14:45 2011 Information (7) A software upgrade filename was specified in the config file.
Tue Sep 20 14:14:45 2011 Tue Sep 20 14:14:45 2011 Information (7) Authorized
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) Registration complete!
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) Received a REG-RSP message from the CMTS...
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) Sending a REG-REQ to the CMTS...
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) CableModem SNMP configure complete
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) IP init completed ok
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) CableModem TFTP init ok
Tue Sep 20 14:14:44 2011 Tue Sep 20 14:14:44 2011 Information (7) CableModem DHCP client init ok
Tue Sep 20 14:14:43 2011 Tue Sep 20 14:14:43 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Tue Sep 20 14:14:37 2011 Tue Sep 20 14:14:37 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:32 2011 Tue Sep 20 14:14:32 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:32 2011 Tue Sep 20 14:14:32 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:26 2011 Tue Sep 20 14:14:26 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:26 2011 Tue Sep 20 14:14:26 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:21 2011 Tue Sep 20 14:14:21 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:21 2011 Tue Sep 20 14:14:21 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:15 2011 Tue Sep 20 14:14:15 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:15 2011 Tue Sep 20 14:14:15 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:13 2011 Tue Sep 20 14:14:13 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:13 2011 Tue Sep 20 14:14:13 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:09 2011 Tue Sep 20 14:14:09 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:09 2011 Tue Sep 20 14:14:09 2011 Information (7) MAP w/initial maintenance region received
Tue Sep 20 14:14:05 2011 Tue Sep 20 14:14:05 2011 Critical (3) No Ranging Response received - T3 time-out
Tue Sep 20 14:14:05 2011 Tue Sep 20 14:14:05 2011 Information (7) MAP w/initial maintenance region received

15:24, upstream power dropped to 36.0 dBmV.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 36.0 dBmV
Upstream Mini-Slot Size : 2

15:31, upstream power dropped to 25.0 dBmV.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 25.0 dBmV
Upstream Mini-Slot Size : 2

15:37, upstream power rise to 31.5 dBmV.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 31.5 dBmV
Upstream Mini-Slot Size : 2

Been keeping a bit of a log to show the engineer.

[Jon22]

Your probably all getting bored of me posting endless stats and logs :D, but I've noticed something new today. Lost sync a few minutes ago and when it re-synced, I noticed that the downstream recieve power level had gone up 1.5 dBmV, although still well within spec. Now the downstream throughout this saga has been very stable, so why the sudden jump up?

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 48.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 6
Downstream Frequency : 330750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 3.6 dBmV
Downstream SNR : 37.6 dB


Cable Modem Event Log
First Time Last Time Priority Description
Wed Sep 21 11:28:59 2011 Wed Sep 21 11:28:59 2011 Information (7) CableModem software upgrade failed
Wed Sep 21 11:28:59 2011 Wed Sep 21 11:28:59 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Wed Sep 21 11:28:59 2011 Wed Sep 21 11:28:59 2011 Information (7) SW dload: Invalid image signature!
Wed Sep 21 11:28:57 2011 Wed Sep 21 11:28:57 2011 Notice (6) SW Download INIT - Via Config file k;fg87dsfd;kfoA,.iye
Wed Sep 21 11:28:57 2011 Wed Sep 21 11:28:57 2011 Information (7) CableModem software download started
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) Software upgrade has started.
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) A software upgrade filename was specified in the config file.
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) Authorized
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) Registration complete!
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) Received a REG-RSP message from the CMTS...
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) Sending a REG-REQ to the CMTS...
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) CableModem SNMP configure complete
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) IP init completed ok
Wed Sep 21 11:28:56 2011 Wed Sep 21 11:28:56 2011 Information (7) CableModem TFTP init ok
Wed Sep 21 11:28:46 2011 Wed Sep 21 11:28:46 2011 Information (7) CableModem DHCP client init ok
Wed Sep 21 11:28:46 2011 Wed Sep 21 11:28:46 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Wed Sep 21 11:28:41 2011 Wed Sep 21 11:28:41 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:34 2011 Wed Sep 21 11:28:34 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:34 2011 Wed Sep 21 11:28:34 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:29 2011 Wed Sep 21 11:28:29 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:28 2011 Wed Sep 21 11:28:28 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:22 2011 Wed Sep 21 11:28:22 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:22 2011 Wed Sep 21 11:28:22 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:16 2011 Wed Sep 21 11:28:16 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:16 2011 Wed Sep 21 11:28:16 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:13 2011 Wed Sep 21 11:28:13 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:13 2011 Wed Sep 21 11:28:13 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:07 2011 Wed Sep 21 11:28:07 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:07 2011 Wed Sep 21 11:28:07 2011 Information (7) MAP w/initial maintenance region received
Wed Sep 21 11:28:04 2011 Wed Sep 21 11:28:04 2011 Critical (3) No Ranging Response received - T3 time-out
Wed Sep 21 11:28:04 2011 Wed Sep 21 11:28:04 2011 Information (7) MAP w/initial maintenance region received

[Sephiroth]

Temperature has dropped significantly so that might be the cause. But your upstream is still problematic and any problems you are having are likely to be due to a noisy upstream.

VM need to fix this.

[Jon22]

Just had the engineer round, who was a friendly bloke and he told me that it was an area wide problem that they have been trying to sort for the last few weeks. He's already had 6 calls this morning about the same problem from this area. He also checked the power levels which typically have been fine since last Thursday. He left me his mobile number as well so if it drops again and stays off, he could be here much quicker than booking another engineer. Just got to be patient and wait for them to sort it.

On a slightly different note but still related, we've been thinking of upgrading to 30Mb. I know this would put me on to a DOCSIS 3 platform (along with having the Superhub) but would it help alleviate the issues I've been having? Would there still be the issue of a dodgy upstream?

[Sephiroth]

The upstream could be dodgy if, for example, the noise is caused in a common part of the network - this goes all the way up to your optical node where there could be tired lasers.

[thenry]

you might as well upgrade enduring these issues. i'm sure vm will be nice enough to sort something out for you.

[Jon22]

I did actually ring them up earlier via retentions and asked them what sort of deal they could do me. They just quoted the standard new customer price plus the £30 activation fee. I didn't push it any further as I'm not the account holder so need to discuss it with them. If everything is ok, I'll probably ring up again tomorrow and push harder for a better deal.

[Jon22]

Bah, not getting anywhere with retentions. They don't seem interested in doing any sort of deals. I've no idea how other people seem to squeeze some decent deals out of them.

[DABhand]

Probably because deals were common when nobody had much of them back in the day, but not so now.

It all depends on how much you can backfoot them into a deal. Don't take no for an answer.

The olde "I want a refund for all the trouble I have had over these last weeks or months" is always a good one, but obviously don't accept the usual crappy £5 sorry credit, explain that you have problems for a long time now and £5 doesn't cover that time.

And if they say sure have 30mb and we will send out the Superhub. Ask them on the phone to make sure they reiterate that it will not cost you anything extra, as in activation fee etc. If they say it won't then go ahead, and if they do charge you at least you have something to fall back on to complain about.

[Ignitionnet]

Alternatively rather than tie yourself into a new contract with a potentially dodgy service wait until 01/03/2012 when you should get access to BT's FTTC solution.

Have a look at http://www.samknows.com/broadband/exchange/WNNP

Seems odd to me complaining about having issues by agreeing a new contract with a supplier for the sake of saving a few quid.

[Jon22]

Sorry to bring this thread back to the top again but I've just started getting these messages again. Although this time, I believe I may have a cause. Its just been pouring down with rain here (still is infact) and where the cable runs under a narrow strip of gravel at the front, is a little waterlogged now. I know for a fact that the cable isn't in any trunking. Can the fact that the cable is effectively sitting in water cause this issue? Everything appear to be working as normal, its just these messages coming up frequently again.

Cable Modem Event Log
First Time Last Time Priority Description
Fri Nov 04 16:32:27 2011 Fri Nov 04 16:32:27 2011 Information (7) New UCD in effect
Fri Nov 04 16:32:27 2011 Fri Nov 04 16:32:27 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:30:39 2011 Fri Nov 04 16:30:39 2011 Information (7) New UCD in effect
Fri Nov 04 16:30:39 2011 Fri Nov 04 16:30:39 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:30:22 2011 Fri Nov 04 16:30:22 2011 Information (7) New UCD in effect
Fri Nov 04 16:30:22 2011 Fri Nov 04 16:30:22 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:30:06 2011 Fri Nov 04 16:30:06 2011 Information (7) New UCD in effect
Fri Nov 04 16:30:06 2011 Fri Nov 04 16:30:06 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:29:46 2011 Fri Nov 04 16:29:46 2011 Information (7) New UCD in effect
Fri Nov 04 16:29:46 2011 Fri Nov 04 16:29:46 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:29:28 2011 Fri Nov 04 16:29:28 2011 Information (7) New UCD in effect
Fri Nov 04 16:29:28 2011 Fri Nov 04 16:29:28 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:29:10 2011 Fri Nov 04 16:29:10 2011 Information (7) New UCD in effect
Fri Nov 04 16:29:10 2011 Fri Nov 04 16:29:10 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:28:10 2011 Fri Nov 04 16:28:10 2011 Information (7) New UCD in effect
Fri Nov 04 16:28:10 2011 Fri Nov 04 16:28:10 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:26:16 2011 Fri Nov 04 16:26:16 2011 Information (7) New UCD in effect
Fri Nov 04 16:26:16 2011 Fri Nov 04 16:26:16 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:25:59 2011 Fri Nov 04 16:25:59 2011 Information (7) New UCD in effect
Fri Nov 04 16:25:59 2011 Fri Nov 04 16:25:59 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:24:56 2011 Fri Nov 04 16:24:56 2011 Information (7) New UCD in effect
Fri Nov 04 16:24:56 2011 Fri Nov 04 16:24:56 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:24:27 2011 Fri Nov 04 16:24:27 2011 Information (7) New UCD in effect
Fri Nov 04 16:24:27 2011 Fri Nov 04 16:24:27 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:24:03 2011 Fri Nov 04 16:24:03 2011 Information (7) New UCD in effect
Fri Nov 04 16:24:03 2011 Fri Nov 04 16:24:03 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:22:40 2011 Fri Nov 04 16:22:40 2011 Information (7) New UCD in effect
Fri Nov 04 16:22:40 2011 Fri Nov 04 16:22:40 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:22:21 2011 Fri Nov 04 16:22:21 2011 Information (7) New UCD in effect
Fri Nov 04 16:22:21 2011 Fri Nov 04 16:22:21 2011 Information (7) Starting on-the-fly UCD change.
Fri Nov 04 16:22:04 2011 Fri Nov 04 16:22:04 2011 Information (7) New UCD in effect
Fri Nov 04 16:22:04 2011 Fri Nov 04 16:22:04 2011 Information (7) Starting on-the-fly UCD change.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 25800000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 43.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 6
Downstream Frequency : 330750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 0.5 dBmV
Downstream SNR : 35.2 dB

[Ignitionnet]

Sorry to bring this thread back to the top again but I've just started getting these messages again. Although this time, I believe I may have a cause. Its just been pouring down with rain here (still is infact) and where the cable runs under a narrow strip of gravel at the front, is a little waterlogged now. I know for a fact that the cable isn't in any trunking. Can the fact that the cable is effectively sitting in water cause this issue?

Nope, it's not specific to you and the cable is plastic so waterproof.

[Jon22]

Must be just coincidence then, started getting the messages at the same time it started pouring down.

[Ignitionnet]

Doesn't mean there aren't problems elsewhere with an open connection to water, could even have been increased use of lighting or whatever putting noise onto the network but it's not likely to be the actual cable itself.