C7000v2 disconnecting all wifi bands at random times

[WalterS0bchak]

I've had this router since june 2019, use comcast and about a month ago we started losing connection every now and then, both the 2.4 ghz and the 5 ghz will go down and the only thing that fixes it is to unplug it or do a reset manually (netgear genie auto restart never works). Since the time of the issues I have changed the MTU size to the correct size (1498), set and deleted a port forwarding to avoid a strict NAT for gaming reasons and replaced the cable coming out of the wall to the modem issues have still persisted. Just before the issues started I set up a 2.4 ghz extender which works when the internet is working fine and my significat other started working from home. 5-8 of my upstream channels are not locked and I have no idea why. Here are my cable connections table, if any other information is needed please ask. Will I need to call in a tech from Comcast to check/replace the cables in the walls?

Startup Procedure

Procedure Status Comment Acquire Downstream Channel 543000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+ IP Provisioning Mode Honor MDD honorMdd(4)

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 17 543000000 Hz -3.7 dBmV 39.8 dB 326 0 2 Locked QAM256 1 405000000 Hz -1.7 dBmV 41.1 dB 69 0 3 Locked QAM256 2 411000000 Hz -2 dBmV 40.8 dB 75 0 4 Locked QAM256 3 417000000 Hz -2 dBmV 40.7 dB 62 0 5 Locked QAM256 4 423000000 Hz -2.3 dBmV 40.3 dB 84 0 6 Locked QAM256 5 453000000 Hz -3.1 dBmV 40.1 dB 110 0 7 Locked QAM256 6 459000000 Hz -3.1 dBmV 40 dB 130 0 8 Locked QAM256 7 465000000 Hz -3.1 dBmV 40 dB 156 0 9 Locked QAM256 8 471000000 Hz -3.3 dBmV 40 dB 161 0 10 Locked QAM256 9 477000000 Hz -3.4 dBmV 40 dB 184 0 11 Locked QAM256 10 483000000 Hz -3.5 dBmV 40 dB 189 0 12 Locked QAM256 11 489000000 Hz -3.8 dBmV 39.9 dB 248 0 13 Locked QAM256 12 495000000 Hz -3.9 dBmV 39.8 dB 224 0 14 Locked QAM256 13 519000000 Hz -4.1 dBmV 39.6 dB 289 0 15 Locked QAM256 14 525000000 Hz -4 dBmV 39.6 dB 315 0 16 Locked QAM256 15 531000000 Hz -3.8 dBmV 39.7 dB 317 0 17 Locked QAM256 16 537000000 Hz -3.8 dBmV 39.8 dB 0 0 18 Locked QAM256 18 549000000 Hz -4 dBmV 39.6 dB 0 0 19 Locked QAM256 19 555000000 Hz -4.2 dBmV 39.4 dB 0 0 20 Locked QAM256 20 561000000 Hz -4.7 dBmV 39 dB 0 0 21 Locked QAM256 21 567000000 Hz -4.6 dBmV 39.5 dB 0 0 22 Locked QAM256 22 573000000 Hz -4.6 dBmV 39.5 dB 0 0 23 Locked QAM256 23 579000000 Hz -4.8 dBmV 39.4 dB 0 0 24 Locked QAM256 24 585000000 Hz -5.3 dBmV 39 dB 0 0

Upstream Bonded Channels

Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 2 5120 Ksym/sec 23700000 Hz 54 dBmV 2 Locked ATDMA 1 5120 Ksym/sec 17300000 Hz 54 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 30100000 Hz 54 dBmV 4 Locked ATDMA 4 5120 Ksym/sec 36500000 Hz 54 dBmV 5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 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

Extended Upstream Transmit Power

Enable Extended Upstream Transmit Power

Current System Time:Wed Apr 29 10:59:25 2020

System Up Time:00:55:41

[FURRYe38]

Have the ISP check the signal and line quality UP to the modem. 
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 

Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?

[WalterS0bchak]

Would I be able to check the lack of splitters without opening any walls? best I can do is take off a face plate and chaeck there. I replaced the cable with an amazonBasics CL2-Rated Coaxial TV Antenna Cable its RG6, but the rest is however old the rest of the cables are.

I live in an apartment so there are a usually 8 or so other wifi networks in the immediate area, I am on a lesser used channel. ill call comcast and get them to run the line.

[FURRYe38]

Try turning down the power output of the modems radios as well. This may help with some interferences with nieghboring wifi and congestion. Maybe found under Advanced Tab/Advanced Settings/Wireless Settings

[WalterS0bchak]

I went there and couldn't find anything about limiting my power outage, is there anything specific I should look for?

[monrubin]

We are in the same boat. Comcast tech checked my line and denied that there wasnt anything wrong on their end. I didnt buy it. He told me that my modem/router is overheating. i requested their own modem to test and will be arriving Sunday. I will let you know what happens. Had this router since October. Never had a problem with connection when i had their modem. This problem happened since this Covid started. They did maintenance on their server and was fine for a week and its disconnecting again. Following your post also since I need some answers. I hope someone can help us here.