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16 Messages
No Ranging Response received - T3 time-out SB6140
Hello All,
I have an intermittent issue with SB6140 that I've tried reaching out to Comcast on but pretty much they run the same script and send signals to the modem and says it checks out fine. Also, to follow up with the modem manufacturer to attempt to get the issue resolved. The issue is I see T3 time-outs: No Ranging Response received - T3 time-out in the modem log intermittently.
Sep 25 2020 14:17:41 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:24 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:18 6-Notice N/A Cable Modem Reboot due to IP loss ;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Sep 25 2020 12:13:57 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Sep 21 2020 18:23:23 4-Error D101.0 DHCP RENEW sent - No response for IPv6;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Sep 21 2020 15:39:46 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Sep 18 2020 08:38:34 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:24 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:18 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Sep 16 2020 19:01:14 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Sep 07 2020 18:17:42 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:22 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:18 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Sep 07 2020 15:09:24 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Sep 05 2020 08:15:31 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:29 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:18 6-Notice N/A Cable Modem Reboot from shell ;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Sep 05 2020 08:14:23 6-Notice E112.0 SW download Successful - Via Config file
Sep 05 2020 08:13:05 6-Notice E102.0 SW Download INIT - Via Config file d11_m_sb6141_speedtierextreme2_c01.cm
Sep 05 2020 08:12:58 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=d4:04:cd:e3:c9:2e;CMTS-MAC=00:01:5c:86:ce:4c;CM-QOS=1.1;CM-VER=3.0;
Wondering if anyone else has ran into this and found an adequate way to get Comcast to fix this timeout issue. Whenever it occurs the internet is unavailable. Devices on WIFI or connected can't access the internet. Then everything restores and works fine.
Responses
EG
Expert
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86.6K Messages
8 m ago
Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
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bs92787
Regular Visitor
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16 Messages
7 m ago
Will post but already had a tech out he found a 3-way splitter in the box outside degrading signal and an issue in the box that required a maintenance ticket. Unfortunately, tech didn't do his job and log ANY notes or put the ticket in so now I have another tech coming out today!
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bs92787
Regular Visitor
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16 Messages
7 m ago
http://imgur.com/a/lSJyFw2
Here's my current signals. Downstream appears ok and within range. Improved after tech removed 3-way splitter. Upstream appears out of range on the transmit power level....
Acceptable Signal Levels
Power Level (DPL)
Power Level (DPL)
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EG
Expert
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86.6K Messages
7 m ago
The signal stats are o/k. In the future, don't go by that 3rd party signal chart that you posted. The Comcast system / plant signal specifications are the only ones that matter;
Specification Min Max
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bs92787
Regular Visitor
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16 Messages
7 m ago
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EG
Expert
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86.6K Messages
7 m ago
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bs92787
Regular Visitor
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16 Messages
7 m ago
@EG I appreciate your insight and time to respond though! Signals were definitely out of range. After tech removing bad 3-way splitter which was degrading signal and then a second tech replacing a few connectors in the box on the side of the house, things have been stable. There was supposedly something still bad in the box by the road but maintenance team came out and said nothing is wrong in there, signal is good. But, they did put in a ticket to bury a new line from the box by the road to my house since he said that one is very old and frayed. So currently pending them to bury a new line. Hopefully that will resolve everything. Otherwise, it is an issue with "in house" wiring or the modem. Probably the wiring in the house given how many issues we have had with other stuff in this house. But, we shall see. I don't have anymore T3/T4 timeouts since they performed the work they did.
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EG
Expert
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86.6K Messages
7 m ago
Hope things hold up for you. Good luck with it !
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