Regular Visitor
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2 Messages
Re: No Ranging Response received - T3 time-out
I am experiencing the same problem described by the original poster. My modem log shows repeated T3 time-out messages, until eventually the internet connection drops altogether. The problem is intermittent - often 2 to 3 times per day. In between the internet connection is fine, fast and reliable. Then this starts happening and eventually the internet is disconnected entirely.
Here is a recent log:
Jul 22 2020 09:48:51 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 09:49:35 Critical (3) Ranging Request Retries exhausted Jul 22 2020 09:49:35 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 09:49:59 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 09:56:23 Critical (3) Ranging Request Retries exhausted Jul 22 2020 09:56:23 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 09:56:47 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:03:11 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:03:11 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:03:35 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:09:59 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:09:59 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:10:23 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:16:47 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:16:47 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:17:11 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:23:35 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:23:35 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:23:59 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:30:23 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:30:23 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:30:47 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:37:11 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:37:11 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:37:35 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:43:59 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:43:59 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:44:23 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:50:48 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:50:48 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:51:11 Critical (3) No Ranging Response received - T3 time-out Jul 22 2020 10:57:36 Critical (3) Ranging Request Retries exhausted Jul 22 2020 10:57:36 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted Jul 22 2020 10:58:00 Critical (3) No Ranging Response received - T3 time-out
I've tried Xfinity support multiple 5 to 6 times over the last 2 weeks. The only solution they offer is rebooting my modem, which is what I have already done - it's the only way to get a connection again.
Please help! My work is suffering as a result of this.
EG
Expert
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111.5K Messages
5 years ago
Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
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mctaylr
Regular Visitor
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2 Messages
5 years ago
Hi @EG .
Here are the Downstream, Upstream and Signal to Noise ratios...
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EG
Expert
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111.5K Messages
5 years ago
The signal stats are o/k but the error log entries indicate that something is going on. Perhaps there is noise ingress into the line(s) somewhere.
There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.
I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They will be able to poll the CMTS to see whether or not everything is in the green zone, see your node / cable plant and modem health, and also see a history plot for the modem. You should get a reply here in your topic. Good luck !
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CCAmir
Gold Problem Solver
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7.2K Messages
5 years ago
Hello mctaylr, (EG) is right checking your signal levels from my end of things will better help us find what's causing your timeouts. To better assist you with this could you please send me a private message with your full name by clicking on my name (ComcastAmir) and then click "Send a message"?
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