Unicast Maintenance Ranging attempted - No response - Retries exhausted

[csun513]

I have been having connection issues with my internet and have had technicain out on 4/9/2020 and they said no issue detected. The replaced the ends of the cables and tested the signal. They also installed a "filter" which has a ground he said and removed the grounding block that was there. No splitters are in play as I only have internet. Before the tech came out I was getting t3 and t4 timeouts in my modem log. I cleared my event log and I am already getting these again and having issues.

I have also battled this for sometime I am on my second new modem coming from a motorola sb6183, purchased a netgear modem and returned and now I am using a MB7621. It is such a huge pain to call cupport and get the run around and then to have a tech come out and say there is not a problem.

Fri Apr 10 20:19:44 2020

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC

Fri Apr 10 20:19:44 2020

Critical (3)

Unicast Maintenance Ranging attempted - No response - Retries exhausted

Fri Apr 10 20:19:44 2020

Critical (3)

16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC

Sat Apr 11 00:16:42 2020

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected 1 Locked QAM256 9 531.0 8.7 40.1 146 95 2 Locked QAM256 33 459.0 7.1 40.0 175 111 3 Locked QAM256 34 465.0 7.1 40.0 176 131 4 Locked QAM256 35 471.0 7.1 40.0 212 94 5 Locked QAM256 36 477.0 6.9 39.9 219 136 6 Locked QAM256 1 483.0 6.9 40.0 179 159 7 Locked QAM256 2 489.0 7.1 40.0 168 191 8 Locked QAM256 3 495.0 7.4 39.4 186 75 9 Locked QAM256 4 501.0 7.6 39.1 203 81 10 Locked QAM256 5 507.0 7.9 35.4 196 75 11 Locked QAM256 6 513.0 8.1 39.0 125 74 12 Locked QAM256 7 519.0 8.3 40.0 116 109 13 Locked QAM256 8 525.0 8.7 40.1 134 155 14 Locked QAM256 10 537.0 8.8 40.1 117 113 15 Locked QAM256 11 543.0 8.8 40.0 146 87 16 Locked QAM256 12 549.0 8.7 40.0 105 108 17 Locked QAM256 13 555.0 9.2 41.5 116 155 18 Locked QAM256 14 561.0 9.1 41.5 98 151 19 Locked QAM256 15 567.0 9.3 41.5 78 154 20 Locked QAM256 16 573.0 9.4 41.0 66 146 21 Locked QAM256 17 579.0 9.5 41.3 88 148 22 Locked QAM256 18 585.0 9.5 40.8 76 149 23 Locked QAM256 19 591.0 9.8 41.2 76 141 24 Locked QAM256 20 597.0 10.0 41.1 89 151 Total             3290 2989

Upstream Bonded Channels

Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV) 1 Locked ATDMA 3 5120 23.0 46.0 2 Locked ATDMA 1 5120 35.8 48.8 3 Locked ATDMA 2 5120 29.4 48.0 4 Not Locked Unknown 0 0 0 0.0 5 Not Locked Unknown 0 0 0 0.0 6 Not Locked Unknown 0 0 0 0.0 7 Not Locked Unknown 0 0 0 0.0 8 Not Locked Unknown 0 0 0 0.0

[csun513]

Do Xfinity employees read this forum? I am still having issue and just had another t4 timeout and completeley dropped my internet while I was working. I am also only connecting to once channel on the upload side.

Sun Apr 19 15:49:10 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out;CM-VER=3.0;
Sun Apr 19 15:53:33 2020	Critical (3)	Resetting the cable modem due to docsDevResetNow
Time Not Established	Notice (6)	Honoring MDD; IP provisioning mode = IPv6

Upstream Bonded Channels

Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV) 1 Locked ATDMA 2 5120 29.4 57.0 2 Not Locked Unknown 0 0 0 0.0 3 Not Locked Unknown 0 0 0 0.0 4 Not Locked Unknown 0 0 0 0.0 5 Not Locked Unknown 0 0 0 0.0 6 Not Locked Unknown 0 0 0 0.0 7 Not Locked Unknown 0 0 0 0.0 8 Not Locked Unknown 0 0 0 0.0

[EG]

The upstream power is approaching the high end of being in spec but it may be intermittently fluctuating even higher to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

If there is nothing that can be done to improve the connection / obtain more wiggle room, you have no choice but to get the techs involved again until it is fixed properly.

Bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home.

Good luck with it !


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[csun513]

I really appreciate your response but how do I make that happen? Keep trying to tell them it is a bigger issue and hope they take the time to do it? That's what I have been doing wish there was someone that could see my logs, understand it and put it through to the right person.