Our signal levels and other issues

[ileikcaek]

Speed seems fine now, even into the evenings.

now I just checked my modem log and it's come back with multiples of this:

Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) Downstream sync ok
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) locked and synced to rescue CMTS...all is well!
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) Downstream sync ok
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) Downstream sync failed
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) Downstream sync ok
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) locked and synced to rescue CMTS...all is well!
Fri Feb 05 11:19:16 2010 Fri Feb 05 11:19:16 2010 Information (7) Downstream sync ok
Fri Feb 05 11:19:15 2010 Fri Feb 05 11:19:15 2010 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Fri Feb 05 11:19:15 2010 Fri Feb 05 11:19:15 2010 Information (7) Downstream sync failed
Fri Feb 05 10:55:09 2010 Fri Feb 05 10:55:09 2010 Information (7) Downstream sync ok
Fri Feb 05 10:55:09 2010 Fri Feb 05 10:55:09 2010 Information (7) locked and synced to rescue CMTS...all is well!
Fri Feb 05 10:55:09 2010 Fri Feb 05 10:55:09 2010 Information (7) Downstream sync ok
Fri Feb 05 10:55:09 2010 Fri Feb 05 10:55:09 2010 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Fri Feb 05 10:55:09 2010 Fri Feb 05 10:55:09 2010 Information (7) Downstream sync failed
Fri Feb 05 10:55:08 2010 Fri Feb 05 10:55:08 2010 Information (7) Downstream sync ok
Fri Feb 05 10:55:08 2010 Fri Feb 05 10:55:08 2010 Information (7) locked and synced to rescue CMTS...all is well!
Fri Feb 05 10:55:08 2010 Fri Feb 05 10:55:08 2010 Information (7) Downstream sync ok
Fri Feb 05 10:55:07 2010 Fri Feb 05 10:55:07 2010 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Fri Feb 05 10:55:07 2010 Fri Feb 05 10:55:07 2010 Information (7) Downstream sync failed
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) Downstream sync ok
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) locked and synced to rescue CMTS...all is well!
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) Downstream sync ok
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) Downstream sync failed
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) Downstream sync ok
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) locked and synced to rescue CMTS...all is well!
Fri Feb 05 10:35:39 2010 Fri Feb 05 10:35:39 2010 Information (7) Downstream sync ok
Fri Feb 05 10:35:38 2010 Fri Feb 05 10:35:38 2010 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Fri Feb 05 10:35:38 2010 Fri Feb 05 10:35:38 2010 Information (7) Downstream sync failed
Fri Feb 05 10:17:51 2010 Fri Feb 05 10:17:51 2010 Information (7) Downstream sync ok
Fri Feb 05 10:17:51 2010 Fri Feb 05 10:17:51 2010 Information (7) locked and synced to rescue CMTS...all is well!

is this anything to worry about? I haven't noticed any issues though.

[Sephiroth]

Couild do with seeing the rest of the modem stats. I'd worry about this because you shouldn't be losing sync. It could be that they're messing around on the network and if it seems to be OK (this evening will be a teller), you could leave it to settle and keep checking your event log and get back to us on Monday or whenever you wish.

[ileikcaek]

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 42800000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 51.5 dBmV
Upstream Mini-Slot Size : 2


Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 6
Downstream Frequency : 306750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 6.4 dBmV
Downstream SNR : 40.6 dB

Cable Modem Information
Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant
MAC Address : xxxxxxxxxxxxxxxxxxxxxx
Serial Number : xxxxxxxxxxxxxxxxxxxxxx
Boot Code Version : 1.1.2c
Software Version : 2.111.1002
Hardware Version : 1.9

Cable Modem Operation Configuration
Network Access : Allowed
Maximum Downstream Data Rate : 20480000
Maximum Upstream Data Rate : 768000
Maximum Upstream Channel Burst : 3044
Maximum Number of CPEs : 1
Modem Capability : Concatenation Enabled, Fragametation Enabled, PHS Enabled

Here they are as requested, not sure anything looks abnormal there.

it could be that they're working on the network.

Just checked the logs again and the last loss of sync was at 12:38pm it looks like it was doing it at 10 - 20 minute periods earlier, nothing for a while so could be all clear :/

[Sephiroth]

Do come back to us on Monday or whenever you wish.

[calmpitbull]

Between those 3 sets of modem stats the downstream power and downstream snr seem to fluctuate a lot ( +6 down to -1 ). Have you moved the position of your modem as a 7db difference is a lot.

[ileikcaek]

Hi Calmpitbull, not at all, it's been in the same spot forever.

I have noticed every time I refresh the page it changes. even once every second - currently fluctuating between 41.1 and 38 on the Downstream SNR. Power level is fluctuating from 6.1 and 6.5dBmV

[Sephiroth]

I get small variations on SNR and downstream power. I'm sure in my case it's temparature related.

[ileikcaek]

Now our internet has just given up completely... rebooted the modem and still nothing

log shows nothing about it being disabled by provisioning... the way it reads, there's no net at all... maintenance or worse?

First Time Last Time Priority Description
Time Not Established Time Not Established Critical (3) DHCP FAILED - Discover sent, no offer received
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...
Time Not Established Time Not Established Information (7) Locked on the downstream. Waiting for UCDs...
Time Not Established Time Not Established Information (7) Downstream lock ok
Time Not Established Time Not Established Information (7) Sync Start
Time Not Established Time Not Established Critical (3) DHCP FAILED - Discover sent, no offer received
Time Not Established Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/Q...

Network Access : Denied
Maximum Downstream Data Rate : --
Maximum Upstream Data Rate : --
Maximum Upstream Channel Burst : --
Maximum Number of CPEs : -1
Modem Capability : Concatenation Enabled, Fragametation Enabled, PHS Enabled


Restarted it a couple more times and it's working again... strange

We've had a few issues over the last week forcing the modem to be restarted... it just looses connection sometimes, but this was by far the worst.