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Upstream retries exceed.

New Poster

Upstream retries exceed.

 

GUys, I have one upstream enable all others have a status of retries exceed.

 

 

Upstream Bonding Channel Value
Channel ID
Frequency 35800000 Hz  16600000 Hz  23000000 Hz  29400000 Hz 
Ranging Service ID 12991  12991  12991  12991 
Symbol Rate 5.120 Msym/sec  5.120 Msym/sec  5.120 Msym/sec  5.120 Msym/sec 
Power Level 50 dBmV  50 dBmV  50 dBmV  50 dBmV 
Upstream Modulation [2] QPSK
[1] 32QAM
[3] 64QAM
 
[2] QPSK
[1] 32QAM
[3] 64QAM
 
[2] QPSK
[1] 32QAM
[3] 64QAM
 
[2] QPSK
[1] 32QAM
[3] 64QAM
 
Ranging Status Success  Retries Exceed  Retries Exceed  Retries Exceed 
New Poster

Re: Upstream retries exceed.

The logs looks like this

 

Time Priority Code Message
Jun 26 2019 22:26:21 3-Critical R05.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:45 3-Critical R06.0 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:45 3-Critical R03.0 Ranging Request Retries exhausted;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:45 3-Critical R06.0 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:45 3-Critical R03.0 Ranging Request Retries exhausted;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:44 3-Critical R06.0 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:44 3-Critical R03.0 Ranging Request Retries exhausted;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Jun 26 2019 22:24:21 3-Critical R05.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=a4:7a:a4:7c:c4:37;CMTS-MAC=00:01:5c:75:b8:55;CM-QOS=1.1;CM-VER=3.0;
Expert

Re: Upstream retries exceed.

The upstream power is on the high side and it may be intermittently fluctuating even higher to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, and speed and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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