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C7000V2 - Spectrum Cable - every night resetting at same time

SR_0410
Aspirant

C7000V2 - Spectrum Cable - every night resetting at same time

I have spectrum cable - ARRIS TM602G modem with C7000v2 nighthawk modem/router combo.   Every night at 12:15AM  my wifi goes off line for couple of minutes.  

 

My event Log shows:  

- Resetting the cable modem due to docsDevResetNow

other logs verbiage has:

SYNC Timing Synchronization failure - Failed to acquire FEC framing;

No Ranging Response received - T3 time-out;

Overriding MDD IP initialization parameters; IP provisioning mode = IPv6

Missing BP Configuration Setting TLV Type: 17.8; 

 

This in general would not be an issue given the time of day - but while all of my devices reconnect with no issues - I have  4 Ring cameras - where 2 of them will reconnect and 2 will not reconnect until 12 hours later, then they reconnect automatically. 

 

3 variables -  NIghthawk, Spectrum Cable and Ring cameras.  

 

Starting point is the 12:15 AM event log - so trying to determine if this is a spectrum issue or  Netgear router issue.  Of course spectrum says the netgear is defective. 

 

I have hard re-set the nighthawk multiple times as well as cameras, etc. and  to no avail.  The  events happen like clockwork and cannot find the root cause.

 

appreciate any ideas.   thanks 

 

 

Model: C7000|Nighthawk - AC1900 WiFi Cable Modem Router
Message 1 of 8
plemans
Guru

Re: C7000V2 - Spectrum Cable - every night resetting at same time

i guess I'm curious as to why you're using 2 modems. 

Message 2 of 8
SR_0410
Aspirant

Re: C7000V2 - Spectrum Cable - every night resetting at same time

Either rent spectrums router for ridiculous monthly charge or get my own - which I did with the nighthawk.   Worked fine for about 6 months, till recent issue.

 

 

Message 3 of 8
plemans
Guru

Re: C7000V2 - Spectrum Cable - every night resetting at same time

so you're not using the other modem? Just the c7000?

Do you have a screen snip of the cable connections page and the modem event logs?

Message 4 of 8
SR_0410
Aspirant

Re: C7000V2 - Spectrum Cable - every night resetting at same time

Thanks,

1)  Here is Event Log:  Note:   I edited to "X" the mac addresses : 

 

 

 

2021-4-7, 23:14:59Critical (3)Resetting the cable modem due to docsDevResetNow
1970-1-1, 00:00:39Critical (3)

SYNC Timing Synchronization failure - Failed to acquire FEC framing;

CM-MAC=x:X:x;X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;

1970-1-1, 00:00:42Notice (6)WiFi Interface [wl0] set to Channel 2 (Side-Band Channel:N/A) - Reason:INIT
1970-1-1, 00:00:42Notice (6)WiFi Interface [wl1] set to Channel 157 (Side-Band Channel:N/A) - Reason:INIT
1970-1-1, 00:00:45Critical (3)

No Ranging Response received - T3 time-out;

CM-MAC=x:X:x;X;CMTS-MAC=x:X:x;X;CM-QOS=1.0;CM-VER=3.0;

1970-1-1, 00:00:48Notice (6)Overriding MDD IP initialization parameters; IP provisioning mode = IPv6
2021-4-7, 23:16:31Error (4)

Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=x:X:x;X;

CMTS-MAC=x:X:x;X;CM-QOS=1.1;CM-VER=3.0;

2021-4-7, 23:16:31Error (4)

Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=x:X:x;X ;

CMTS-MAC=x:X:x;X;CM-QOS=1.1;CM-VER=3.0;

 

  Happens at exact same time every night.

 

2) On the setup  -  the   spectrum TM602G is used for Telephone service - coax from wall is split (commscope SV-2G splitter)  to this modem alogn with power and phone line . 

 

& Netgear nighthawk for internet is connected to coax/power.    Then WIFI to  laptops, etc. 

 

Previously I had  seperate Netgear router and separate netgear modem -  in JUne of 2020 - I replaced these 2 with the Netgear Nighthawk C7000V2 combo -   no issues for about 8 months , only the last month or so  -  at exactly 12:15AM -  I get this eve

 

 

 

 

 

 

 

 

 

Model: C7000|Nighthawk - AC1900 WiFi Cable Modem Router
Message 5 of 8
plemans
Guru

Re: C7000V2 - Spectrum Cable - every night resetting at same time

I've never seen a setup that uses to modems unless one has a seperate line of service

Message 6 of 8
SR_0410
Aspirant

Re: C7000V2 - Spectrum Cable - every night resetting at same time

Regardless - what about the event logs -   what does this indicate ?  Thanks 

Message 7 of 8
plemans
Guru

Re: C7000V2 - Spectrum Cable - every night resetting at same time

You'd need more log entries. most of them are when the modem first boots up. 

get a log right before it resets. Also get a snip of the cable connections page. 

Have you tried it with just 1 modem?

Message 8 of 8
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