quartarolo_home's profile

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5 Messages

Thu, Jan 7, 2021 5:00 AM

Netgear Router - Started Unicast Maintenance Ranging

Hi all,

 

Did some googling and saw a lot of people have been seeing this issue as of late. I have a Netgear CM1150v router plugged in, up until a month ago signal was fine and no issues. Lately it has been dropping all the time. I remote into my work machine so this regularly impacts my job and has been quite frustrating to me throughout my day and I would like some help.

 

I have attached the event log from my routers page, I have seen others do that with this issue to help get eyes on what is going on.

Thu Jan 07 08:42:08 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 07 04:34:39 2021Warning (5)TEK Invalid - Invalid Key Sequence Number;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 07 04:32:25 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 07 03:04:50 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 07 03:04:26 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 07 03:02:42 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 21:43:42 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 21:43:10 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 21:41:38 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 19:27:51 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 19:27:34 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 19:26:50 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 19:26:49 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 19:07:38 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 18:48:43 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 18:48:41 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 18:48:00 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 18:46:53 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 17:44:38 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:32:59 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:32:03 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:28:00 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:08:10 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:08:06 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:07:29 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:07:27 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 15:05:08 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 14:33:43 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 14:33:11 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 14:30:50 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 14:14:38 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 14:13:49 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 14:13:10 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:59:06 2021Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:59:04 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:58:29 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:58:14 2021Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:56:01 2021Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:17:36 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;
Wed Jan 06 13:17:12 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 29; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d4:f3:68;CMTS-MAC=00:01:5c:85:cc:66;CM-QOS=1.1;CM-VER=3.1;

Responses

New Poster

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5 Messages

4 m ago

Here is the Upstream/Downstream from the cable connections page,

 

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1LockedQAM25613519000000 Hz3.6 dBmV39.9 dB13723473
2LockedQAM2561441000000 Hz3.2 dBmV40.2 dB238011652
3LockedQAM2562447000000 Hz3.5 dBmV40.1 dB312127971
4LockedQAM2563453000000 Hz3.7 dBmV40.1 dB293044574
5LockedQAM2564459000000 Hz3.3 dBmV33.6 dB3520014840
6LockedQAM2565465000000 Hz3.3 dBmV40 dB3612216427
7LockedQAM2566471000000 Hz4 dBmV40.2 dB86457237116
8LockedQAM2567477000000 Hz4.1 dBmV40.1 dB203921932
9LockedQAM2568483000000 Hz3.4 dBmV40 dB279821890
10LockedQAM2569489000000 Hz3.3 dBmV39.9 dB303092866
11LockedQAM25610495000000 Hz3.8 dBmV39.8 dB171241752
12LockedQAM25611507000000 Hz3.8 dBmV39.8 dB175172376
13LockedQAM25612513000000 Hz3.3 dBmV39.8 dB162702006
14LockedQAM25614525000000 Hz4.3 dBmV39.9 dB15755740
15LockedQAM25615531000000 Hz4.4 dBmV40 dB12933739
16LockedQAM25616537000000 Hz3.8 dBmV39.9 dB15415999
17LockedQAM25617543000000 Hz4 dBmV39.9 dB129291213
18LockedQAM25618549000000 Hz4.5 dBmV40 dB7928745
19LockedQAM25619561000000 Hz4 dBmV39.9 dB9101674
20LockedQAM25620567000000 Hz3.8 dBmV39.8 dB7544804
21LockedQAM25621573000000 Hz4.1 dBmV39.8 dB6755678
22LockedQAM25622579000000 Hz4.6 dBmV39.9 dB7266842
23LockedQAM25623585000000 Hz4.3 dBmV39.7 dB77841035
24LockedQAM25624591000000 Hz3.8 dBmV39.5 dB7902933
25LockedQAM25625597000000 Hz4.2 dBmV39.4 dB8351712
26LockedQAM25626603000000 Hz4.6 dBmV39.6 dB7897620
27LockedQAM25627609000000 Hz4.2 dBmV39.4 dB8000684
28LockedQAM25628615000000 Hz3.7 dBmV39 dB9099711
29LockedQAM25630621000000 Hz3.9 dBmV36.4 dB3335871963
30LockedQAM25631627000000 Hz4.1 dBmV36 dB2367690524064
31LockedQAM25632633000000 Hz4 dBmV38.2 dB134103132736949
32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1LockedATDMA935120 Ksym/sec36500000 Hz52.3 dBmV
2LockedATDMA945120 Ksym/sec30100000 Hz54.3 dBmV
3LockedATDMA955120 Ksym/sec23700000 Hz59 dBmV
4LockedATDMA965120 Ksym/sec17300000 Hz58.5 dBmV
5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
 
Downstream OFDM Channels
Channel Lock
Status
Modulation /
Profile ID
Channel
ID
Frequency Power SNR /
MER
Active Subcarrier
Number Range
Unerrored
Codewords
Correctable
Codewords
Uncorrectable
Codewords
1Locked0 ,1 ,2 ,329693000000 Hz6.0 dBmV37.9 dB1108 ~ 2987601843416058750635444454
2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
 
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1Not Locked000 Hz0 dBmV
2Not Locked000 Hz0 dBmV
EG

Expert

 • 

86.5K Messages

4 m ago

The upstream power is way too high / out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

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.

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.
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New Poster

 • 

5 Messages

4 m ago

Yeah I checked everything going up to the attic and still the issue persists. This started about a month ago, before this everything was fine and there were no changes to any of the wiring in the house.

New Poster

 • 

5 Messages

4 m ago

I will have to investigate more to see if their is one I am missing, at this point I have not had any drops since eliminating the one splitter.

New Poster

 • 

5 Messages

4 m ago

I eliminated a splitter and this is the upstream now

 

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1LockedATDMA935120 Ksym/sec36500000 Hz47.5 dBmV
2LockedATDMA945120 Ksym/sec30100000 Hz48.3 dBmV
3LockedATDMA955120 Ksym/sec23700000 Hz49 dBmV
4LockedATDMA965120 Ksym/sec17300000 Hz48.3 dBmV
5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
EG

Expert

 • 

86.5K Messages

4 m ago

It's marginal. 40 to 45 dB would be ideal !

 

If there is nothing more that you can do to improve it then as stated, you'll need to get a tech out to investigate the problem.

 

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.

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!tick
ComcastAmira

Official Employee

 • 

2.3K Messages

4 m ago

Hello @quartarolo_home, thanks for reaching out to our Digital Care Team on Forums. We appreciate you being a customer with us and I am sorry to hear about the connection issues you have been experiencing. We also apologize for the delay in getting back to you but I am happy to hear removing one splitter may have corrected this issue for you. I would like to confirm, has the Internet connection still been solid and steady with no drops on your end? 

I am an Official Comcast Employee.
Official Employees are from multiple teams within Comcast: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation.
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