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Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to range

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Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to range

Hi, I am a cable internet subscriber and I am having intermittent connectivity issues every 10 or so minutes. Below are the logs from my modem.  Any help would be appreciated.

 

ime   Priority   Description 
 Thu Jun 18 08:22:05 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:21:17 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:21:17 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:21:17 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:21:14 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:21:14 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:21:14 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:21:13 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:21:13 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:21:13 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:14:04 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:14:04 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:14:04 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:14:02 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:14:02 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:14:02 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:14:01 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:14:01 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:14:01 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:06:52 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:06:52 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:06:52 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:06:49 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:06:49 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:06:49 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 08:06:48 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 
 Thu Jun 18 08:06:48 2020    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries... 
 Thu Jun 18 08:06:48 2020    Critical (3)   Started Unicast Maintenance Ranging - No Response received - ... 
 Thu Jun 18 07:59:39 2020    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream ... 

 

Status

Connection

This page displays information about the connection to the cable network.
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 447000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK d11_m_5352_perfselect_c01.cm
Security Enabled BPI+

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 8 447000000 Hz 1.3 dBmV 40.8 dB 9 0
2 Locked QAM256 9 453000000 Hz 1.4 dBmV 40.8 dB 16 0
3 Locked QAM256 10 459000000 Hz 1.5 dBmV 40.9 dB 17 0
4 Locked QAM256 11 465000000 Hz 1.5 dBmV 40.8 dB 13 0
5 Locked QAM256 12 471000000 Hz 1.5 dBmV 40.9 dB 12 0
6 Locked QAM256 13 477000000 Hz 1.4 dBmV 40.9 dB 15 0
7 Locked QAM256 14 483000000 Hz 1.4 dBmV 40.8 dB 15 0
8 Locked QAM256 15 489000000 Hz 1.4 dBmV 40.8 dB 18 0

Total Correctables Total Uncorrectables
115 0


Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 9 5120 Ksym/sec 36700000 Hz 43.3 dBmV
2 Locked ATDMA 6 5120 Ksym/sec 17300000 Hz 42.8 dBmV
3 Locked ATDMA 7 5120 Ksym/sec 23700000 Hz 42.8 dBmV
4 Locked ATDMA 8 5120 Ksym/sec 30300000 Hz 42.8 dBmV

CM IP Address Duration Expires
2001:558:4000:fc:fe4a:e9ff:fe0a:92bc/64 😧 07 H: 00 M: 00 S: 00 Thu Jun 25 08:26:32 2020
Downstream Frequency Select (in KHz)
Current System Time: Thu Jun 18 08:26:32 2020
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Expert

Re: Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to r

Is this with a WiFi connection ? If so, for a test, does a computer hardwired directly to the router / gateway device with an ethernet cable have the same problem ?



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Re: Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to r

Thanks for looking into this. It is wifi, I will check it the cable connection and add the outcome. But don't the cable modem logs suggest it is related to the cable connection itself and not the WiFi? 

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Expert

Re: Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to r

Not conclusively. It could still be either or both. That's why we are trying to narrow it down with that test.



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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.
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Re: Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to r

Thanks I did the check and with the ethernet cable there were no connection issues. I am guessing my interruptions were related to the wifi, possibly due to interference with the bluetooth devices. When the bluetooth devices are turned off my connection is much better even with wifi.

 

Now my question is, is it okay to ignore the errors in the cable modem logs, since apparently they are not related to the interruptions for my case?

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Expert

Re: Intermittent disconnections every 10 or so minutes (16 consecutive T3 timeouts while trying to r

Pretty much if your wired connections are not dropping.

 

Some tips for improving WiFi performance;


http://corporate.comcast.com/comcast-voices/10-ways-you-might-be-killing-your-home-wi-fi-signal

 

http://forums.xfinity.com/t5/Your-Home-Network/Improve-Your-Wireless-Gateway-Home-Network/td-p/26276...


https://www.xfinity.com/support/articles/improve-your-wireless-home-network


There are other options. Google for WiFi repeaters / range extenders, WiFi mesh systems / pods.



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!