Community Forum

Frequent internet drops

New Poster

Frequent internet drops

I'm seeing my internet signal go out multiple times a day. I've tested everything that I can, rebooted modem replaced cable from the wall to the modem. Nothing seems to make any difference.I have a netgear CM500 cable modem that has perfmormed flawlessly.  


The problems started 2 months ago or so and haven't shown any signs of getting better. I have pull the logs from the CM500 these are the errors i'm seeing:


6 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=14:59:c0:00:f1:b0;CMTS-MAC=00:01:5c:63:1c:65;CM-QOS=1.1;CM-VER=3.0;


Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=14:59:c0:00:f1:b0;CMTS-MAC=00:01:5c:63:1c:65;CM-QOS=1.1;CM-VER=3.0;


Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:00:f1:b0;CMTS-MAC=00:01:5c:63:1c:65;CM-QOS=1.1;CM-VER=3.0;


Any help would be greatly appreciated!



Re: Frequent internet drops

Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!