04-01-2012 09:22 PM
I have recently been experiencing intermittant internet connectivity issues. When I lose the connection, the "cable" light on my D link DCM-202 changes from green to orange. It happens several times a day, sometimes several times an hour, and lasts for about 30-60 seconds. Any help you can give is appreciated. I am running Win 7 Pro 64-bit and also use a Linksys WRT54G V8 router between the modem and the computer, all connected via ethernet.
I have included the following from the configuration page.
System Event Log Index Date/Time ID Level Text
90 04/01/12 18:16:51R05.0criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out
91 04/01/12 18:16:52R06.0criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted
92 04/01/12 18:16:52U02.0criticalUCD invalid or channel unusable
93 04/01/12 18:16:52C206.0criticalDCC aborted unable to communicate on upstream channel
94 04/01/12 18:26:36R05.0criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out
95 04/01/12 18:27:06R04.0criticalReceived Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
96 04/01/12 18:27:07U02.0criticalUCD invalid or channel unusable
97 04/01/12 18:27:07C206.0criticalDCC aborted unable to communicate on upstream channel
98 04/01/12 18:31:56R05.0criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out
99 04/01/12 18:31:58R06.0criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted
100 04/01/12 18:31:58U02.0criticalUCD invalid or channel unusable
101 04/01/12 18:31:58C206.0criticalDCC aborted unable to communicate on upstream channel
102 04/01/12 18:36:59R05.0criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out
103 04/01/12 18:37:00R06.0criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted
104 04/01/12 18:37:00U02.0criticalUCD invalid or channel unusable
105 04/01/12 18:37:00C206.0criticalDCC aborted unable to communicate on upstream channel
106 04/01/12 18:42:01R05.0criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out
107 04/01/12 18:42:02R06.0criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted
108 04/01/12 18:42:02U02.0criticalUCD invalid or channel unusable10904/01/12 18:42:02C206.0criticalDCC aborted unable to communicate on upstream channel
Downstream Signal Default Downstream Frequency: Hz Frequency:651000000 Hz
QAMChannel Power:4.3 dBmV
Upstream Signal Channel Id:6Frequency:24200000 Hz
Channel Width:3200000 Hz
Channel Power:45.8 dBmV
DOCSIS1.1 Quality of Service Parameters DirectionUpstreamDownstreamSFID0x229f0x22a0SID0x19
Max Sustained Traffic Rate (bps)220000016500000
Max Transmit Burst (bytes)500000010000000
Min Reserved Traffic Rate (bps)00
Service Flow Scheduling TypeBest EffortN/A
Cable Status Initialize Hardware Success
Download CM Config FileSuccess
General Information Model Name: DCM-202
Hardware Version: 1A
Software Version: 2.00.03D1.07
System Time: SUN APR 01 19:05:01 2012
System Up Time: 05h:39m:37s
Standard Specification Compliant: DOCSIS 1.1/2.0 Cable Modem IP Information
04-02-2012 01:59 AM
You'll want to replace the modem. I'd suggest you check out a Motorola 6121 or Zoom 5341-J either one is about $75. When you get your new modem, just hook it up and call Comcast, they will activate it for you.
Connection and trouble shooting tips (How to check signal levels.) . Info you should post to get help.
The opinions expressed here are my own and are not sanctioned by my employer.
04-05-2012 01:22 PM
Yes, i understand where the ping is coming from but it's working, or at least seems to be. I can now listen to NBA audio league pass without interruption.
04-05-2012 01:40 PM - edited 04-05-2012 01:42 PM
To be more clear, it is the way that that modem/firmware load reacts with the CC system (certain brands of their CMTS's) that has historically been an issue. I was trying to indicate that a local ping may not prove/reveal anything in this case.. Good luck with it.
04-16-2012 10:27 PM
Thanks for your help. I am looking into a new modem, and, since I will be going DOCSIS 3.0, a new router as well, as I currently have a Linksys WRT54G v8 that I understand will limit speed. Do you have any manufacturer/model suggestions for that as well?
05-09-2012 09:49 PM
|Acquire Downstream Channel||693000000 Hz||Locked|
|1||Locked||QAM256||8||693000000 Hz||4.5 dBmV||40.7 dBmV||0||0|
|2||Locked||QAM256||1||651000000 Hz||3.7 dBmV||40.8 dBmV||0||0|
|3||Locked||QAM256||2||657000000 Hz||3.7 dBmV||40.8 dBmV||0||0|
|4||Locked||QAM256||3||663000000 Hz||4.0 dBmV||40.8 dBmV||0||0|
|5||Locked||QAM256||4||669000000 Hz||5.1 dBmV||41.1 dBmV||0||0|
|6||Locked||QAM256||5||675000000 Hz||4.0 dBmV||41.0 dBmV||0||0|
|7||Locked||QAM256||6||681000000 Hz||4.9 dBmV||41.5 dBmV||0||0|
|8||Locked||QAM256||7||687000000 Hz||5.5 dBmV||41.5 dBmV||0||0|
|1||Locked||ATDMA||5||5120 Ksym/sec||29500000 Hz||49.5 dBmV|
|2||Locked||ATDMA||4||5120 Ksym/sec||36400000 Hz||49.5 dBmV|
|3||Locked||TDMA and ATDMA||6||2560 Ksym/sec||24200000 Hz||49.5 dBmV|
|4||Not Locked||Unknown||0||0 Ksym/sec||0 Hz||0.0 dBmV|
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