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View Full Version : 50M Strange 50M problem over night.

starbeats1
25-11-2011, 09:31
Hi, Been having an issue with VM 50mb recently where once or twice a week, usually a Wednesday night mainly, my internet just stops and the only way to recover is too unplug the modem etc. The modem has the send/receive lights flashing on and off slowly.

Here are the details of the log and my config etc:

Thu Nov 24 00:52:03 2011 Thu Nov 24 00:52:03 2011 Warning (5) Lost MDD Timeout;CM-MAC=****;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Thu Nov 24 00:52:04 2011 Thu Nov 24 00:52:04 2011 Warning (5) MDD message timeout;CM-MAC=*****;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Thu Nov 24 00:52:17 2011 Thu Nov 24 00:52:18 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Nov 24 00:54:28 2011 Thu Nov 24 00:54:28 2011 Critical (3) DHCP FAILED - Discover sent, no offer received;CM-MAC=****;CMTS-MAC=****;CM-QOS=1.1;CM-VER=3.0;

The above repeats about 10 times.

Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 299000000 307000000 315000000 323000000
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y Y/Y/Y
Channel Id 6 7 8 9
Modulation 256QAM 256QAM 256QAM 256QAM
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 6.952
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level
(dBmV) -12.97 -8.00 -8.08 -8.29
RxMER
(dB) 31.76 33.72 34.21 34.21
Correctable
Codewords 4411658 59003 9956 8167
Uncorrectable
Codewords 1001 1000 867 315


Any ideas ? is the modem broken?

Thanks in advance for the help.
djfunkdup
25-11-2011, 11:38
for starters....

Power Level (dBmV) -12.97 -8.00 -8.08 -8.29 !!

these power levels need sorted....

---------- Post added at 11:38 ---------- Previous post was at 11:36 ----------

upstream power levels..? what are they? ..post them please
starbeats1
25-11-2011, 11:40
US-1 US-2 US-3 US-4
Channel Type 2.0 N/A N/A N/A
Channel ID 1 N/A N/A N/A
Frequency
(Hz) 45800000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 5120 N/A N/A N/A
Mini-Slot Size 4 N/A N/A N/A
Power Level
(dBmV) 52.75 N/A N/A N/A
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 0 0 0 0
T4 Timeouts 0 0 0 0


yeah, downstream does seem wrong.

Right now =

Power Level
(dBmV) -11.79 -10.20 -9.00 -8.93
RxMER
(dB) 31.69 32.41 33.72 34.08
djfunkdup
25-11-2011, 11:44
Power Level (dBmV) 52.75 N/A N/A N/A yea that is fine...could be slightly lower but its not above the max..

you defo need to get onto tech support and get a tech guy out to adjust your downstream power levels.... that can certainly cause dropouts...
starbeats1
25-11-2011, 11:47
Thanks for the quick reply, would those power levels cause the first problem ?

Cheers.
djfunkdup
25-11-2011, 11:52
well the downstream power levels as they are certainly can/would cause drop outs...

although from reading your post i doubt that this would be selective in the sense that the drop outs would only happen on a wed..lol..
starbeats1
25-11-2011, 12:02
well the downstream power levels as they are certainly can/would cause drop outs...

although from reading your post i doubt that this would be selective in the sense that the drop outs would only happen on a wed..lol..

yeah, that is strange...lol

Ill phone the tech's :)
djfunkdup
25-11-2011, 12:10
prob best man and get it sorted asap...that could be the cause of your problems...