Shankarhokie's profile

Contributor

 • 

43 Messages

Wed, Apr 15, 2020 6:00 PM

daily restart of modem

I am in the 600MBps band and used to clock around 700Mbps at all times. 

Once the recent work from home in MI started, the speed slows down to 6Mbps or even slower. I have to restart the modem to get back to decent speed. I have to do this multiple times a day.

Noting much has changed in terms of modem/router, #connected devices. Same number of devices as during the weekend when we all connect our laptops & phones.

 

Why is this happening & what is the remedy?

Responses

Contributor

 • 

43 Messages

1 y ago

Thanks for the follow up @ComcastChe 

ComcastChe

Official Employee

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6.1K Messages

1 y ago

Hi @Shankarhokie!

 

Sorry for the delay. Yes, I do have an update for you. Based on what I see, I've been communicating with your local techs to get this escalated since I cannot schedule a normal tech visit. I've just received the ok today, so I will be replying to your private message shortly. I have a few more things I need to verify before I can get this up to them. Chat with you soon. 

Contributor

 • 

43 Messages

1 y ago

April 24th update.

 

Tech showed up promptly at 10 am.  He maintained social distance and asked what issue I was having.  I explained my having to restart the modem daily.

 

Tech mentioned that this is a bandwidth issue with everyone being online at the same time. He said that Comcast designs the network nodes and infrastructure for 50%  average utilization and now it is more than 90% putting a strain on the bandwidth. 

He said that there were several techs working in our neighborhood checking the cables because of complaints.

He cautioned me NOT to restart the modem during the latter part of the day since the modem may not be able to connect back.

He checked everything outside and did not find an issue.  The signal strength, quality, channel powers were all within bounds.

He said that Comcast in investigating adding some more nodes in the area to reduce the number of homes  using a single node.

 

I guess I will have to wait for Michigan to fully open up and all of us to start going back to work before this problem stops.

Until then, I'm going to do a restart early in the morning and hope for the best!

I will keep updating my daily findings.

ComcastChe

Official Employee

 • 

6.1K Messages

1 y ago

Thanks for the update @Shankarhokie!

Although he wasn't able to do anything to completely resolve the issue, it's a good thing that he was able to isolate any issues at your home or with your equipment and confirm that your local techs are aware and investigating. Please keep us updated. If things get too bad for you reach out in our private message and I'll see what I can do. 

Regular Visitor

 • 

1 Message

1 y ago

@ComcastChe @EG Please Help!

 

We are having the exact same issue and nobody is helping. After half a dozen chat sessions with support all they can do is tell us to reset the modem. Today, they flat out disconnected the chat when we asked for escalation. On the phone we were also promised someone was coming to check outside the house but never showed up.

 

Why keep paying for 900Mbps service when our average daily speeds are around 20 Mbps? Please have someone come check the service. We have top of the line equipement all with recomended settings and regular tests showing poor sertive across WiFi and Ethernet on multiple devices and times of day. Our device setup inside the house has not changed. This is almost unusable with so many reboots required. What is going on here?

 

Router: Netgear RAX200 AX12

Modem: Negear Genie CM1150V (V2.02.04 Firmware)

 

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 36 591000000 Hz 2.2 dBmV 41.2 dB 4 0
2 Locked QAM256 8 411000000 Hz 2.7 dBmV 42.7 dB 0 0
3 Locked QAM256 9 417000000 Hz 2.6 dBmV 42.6 dB 1 0
4 Locked QAM256 10 423000000 Hz 2.6 dBmV 42.6 dB 0 0
5 Locked QAM256 11 429000000 Hz 2.7 dBmV 42.5 dB 0 0
6 Locked QAM256 12 435000000 Hz 2.7 dBmV 42.5 dB 0 0
7 Locked QAM256 13 447000000 Hz 2.7 dBmV 42.4 dB 0 0
8 Locked QAM256 14 453000000 Hz 2.7 dBmV 42.3 dB 0 0
9 Locked QAM256 15 459000000 Hz 2.6 dBmV 42.2 dB 0 0
10 Locked QAM256 16 465000000 Hz 2.7 dBmV 42.3 dB 0 0
11 Locked QAM256 17 471000000 Hz 2.7 dBmV 42.2 dB 0 0
12 Locked QAM256 18 477000000 Hz 2.8 dBmV 42.1 dB 1 0
13 Locked QAM256 19 483000000 Hz 2.7 dBmV 42.1 dB 0 0
14 Locked QAM256 20 489000000 Hz 2.7 dBmV 42 dB 1 0
15 Locked QAM256 21 495000000 Hz 2.7 dBmV 41.9 dB 0 0
16 Locked QAM256 22 507000000 Hz 2.7 dBmV 41.9 dB 0 0
17 Locked QAM256 23 513000000 Hz 2.6 dBmV 41.8 dB 0 0
18 Locked QAM256 24 519000000 Hz 2.6 dBmV 41.8 dB 1 0
19 Locked QAM256 25 525000000 Hz 2.4 dBmV 41.6 dB 0 0
20 Locked QAM256 26 531000000 Hz 2.3 dBmV 41.5 dB 1 0
21 Locked QAM256 27 537000000 Hz 2.2 dBmV 41.4 dB 2 0
22 Locked QAM256 28 543000000 Hz 2.3 dBmV 41.5 dB 3 0
23 Locked QAM256 29 549000000 Hz 2.2 dBmV 41.5 dB 2 0
24 Locked QAM256 30 555000000 Hz 2.2 dBmV 41.4 dB 4 0
25 Locked QAM256 31 561000000 Hz 2.2 dBmV 41.4 dB 2 0
26 Locked QAM256 32 567000000 Hz 1.9 dBmV 41.1 dB 2 0
27 Locked QAM256 33 573000000 Hz 2 dBmV 41.1 dB 1 0
28 Locked QAM256 34 579000000 Hz 1.9 dBmV 41.1 dB 3 0
29 Locked QAM256 35 585000000 Hz 2 dBmV 41.1 dB 4 0
30 Locked QAM256 37 597000000 Hz 2 dBmV 41.1 dB 2 0
31 Locked QAM256 38 603000000 Hz 2.3 dBmV 41.3 dB 4 0
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 Ksym/sec 17300000 Hz 50.8 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 23700000 Hz 50.8 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 30300000 Hz 50.3 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 36700000 Hz 50.3 dBmV
5 Locked ATDMA 5 1280 Ksym/sec 41200000 Hz 50 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 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
1 Locked 0 ,1 ,2 ,3 48 688000000 Hz 2.6 dBmV 40.0 dB 1108 ~ 2987 44869030 32486288 0
2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0
 
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV

  

Time Priority Description
Wed Jul 01 13:53:41 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 01 13:53:36 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 01 06:24:41 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 01 06:24:36 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 23:05:07 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 23:05:03 2020 Notice (6) CM-STATUS message sent. Event Type Code: 22; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 23:05:02 2020 Notice (6) CM-STATUS message sent. Event Type Code: 23; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 22:39:07 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 22:38:38 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 06:11:17 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 30 06:11:12 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 08:25:18 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 08:24:52 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 08:00:50 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 08:00:45 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 06:39:12 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 06:39:07 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Jun 29 06:25:57 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Sun Jun 28 23:35:39 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Sun Jun 28 23:35:34 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Sun Jun 28 23:27:58 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Sun Jun 28 23:27:52 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:d3:3f:e8;CMTS-MAC=00:01:5c:a8:ca:60;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Text EndpointName
2020-07-01 13:54:00 DHCP ERROR:OFFER;REQUESTING;Option 122.3 contains invalid FQDN 0.0.0.0

 

New Poster

 • 

1 Message

1 y ago

Hi - I have been having this SAME ISSUE for WEEKS! We have to manually restart one to five times/day. Please help! @ComcastChe 

Contributor

 • 

43 Messages

1 y ago

@ComcastChe : The problem returned the next day and I have to do the restart daily.

New Poster

 • 

1 Message

8 m ago

I have the exact same problem in Santa Cruz, CA. A few months ago upgraded to Arris SB8200, we the 600 Mbps service plan (upgraded from 300 Mbps). Unfortuantely, a service tech that came a few weeks ago informed me that 400 Mbps (300 realized) is the most we can expect in our area until they install fiberoptic. The 'upgrade' only cost a few tens of dollars more per more so I'm loath to downgrade, hoping for the best bandwidth possible despite the local infrastructure limitation.

 

Typically I see a max of ~180 Mbps download speeds on my mid-2011 MacBook Air, up to 300 Mbps on my two year old iphone 10 and up to ~280 Mbps on my 2019 MacBook Pro laptop. Starting a few weeks ago, I find I have to reset my modem EVERY MORNING or sometimes more often, otherwise speeds go down to 2-5 Mbps. As others on this thread have noted this is VERY frustrating and has me wondering why I don't just switch to AT&T. If Xfinity doesn't get it together soon, I probably will switch. We have 4-5 people in our household attempting to work and attend school remotely. These resets seriously compromise our ability to make a living and educate our children. Considering the amount of money we (the greater community) are collectively paying Xfinity, they need to fix this ASAP.

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