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I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Hawkwing2000
Aspirant

I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Hi,

My router has been rebooting almost every night, usually at the worst possible time.  I'm not sure why so I printed the event log hoping someone could give me some direction.  I was using a Motorola Modem without wifi and never really had these issues before.  The last log was from the latest reboot.

 

 
 
 
 
TimePriorityDescription
Mar 03 2020 19:15:07Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Mar 03 2020 19:13:52Critical (3)No Ranging Response received - T3 time-out
Mar 03 2020 19:13:51Error (4)TCS Fail on all Upstream Channels
Mar 03 2020 19:13:51Critical (3)Unicast Ranging Received Abort Response - initializing MAC
Mar 03 2020 19:13:51Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 03 2020 19:13:51Critical (3)No Ranging Response received - T3 time-out
Mar 03 2020 19:13:50Critical (3)Unicast Ranging Received Abort Response - initializing MAC
Mar 03 2020 19:13:38Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 02 2020 19:59:00Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Mar 01 2020 20:54:04Critical (3)No Ranging Response received - T3 time-out
Feb 28 2020 23:18:09Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Model: C6300|AC1750 Cable Modem Router Docsis 3.0
Message 1 of 11
FURRYe38
Guru

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Have the ISP check the signal and line quality UP to the modem. 
Be sure there are not 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. 

Message 2 of 11
vkdelta
NETGEAR Expert

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

pls provide power value screenshot as well.

Message 3 of 11
Hawkwing2000
Aspirant

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Is this what you need?  Not sure where else it would be:

 

Downstream Bonded Channels

ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUnCorrectables
1LockedQAM 2561459000000 Hz-1.7 dBmV38.9 dB00
2LockedQAM 2562465000000 Hz-1.7 dBmV38.9 dB240
3LockedQAM 2563471000000 Hz-1.7 dBmV38.9 dB260
4LockedQAM 2564477000000 Hz-1.9 dBmV40.3 dB00
5LockedQAM 2565483000000 Hz-1.7 dBmV38.6 dB00
6LockedQAM 2566489000000 Hz-2.0 dBmV38.9 dB170
7LockedQAM 2567495000000 Hz-2.0 dBmV38.6 dB00
8LockedQAM 2568507000000 Hz-1.7 dBmV38.9 dB60
9LockedQAM 2569513000000 Hz-1.7 dBmV38.9 dB240
10LockedQAM 25610519000000 Hz-1.9 dBmV38.9 dB110
11LockedQAM 25611525000000 Hz-2.0 dBmV38.9 dB270
12LockedQAM 25612531000000 Hz-2.2 dBmV38.9 dB120
13LockedQAM 25613543000000 Hz-2.4 dBmV38.9 dB90
14LockedQAM 25614549000000 Hz-2.5 dBmV38.9 dB200
15LockedQAM 25615555000000 Hz-2.4 dBmV38.6 dB160
16LockedQAM 25616561000000 Hz-2.2 dBmV38.9 dB370

Upstream Bonded Channels

ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA35120 Ksym/sec17300000 Hz49.5 dBmV
2LockedATDMA45120 Ksym/sec23700000 Hz51.0 dBmV
3LockedATDMA15120 Ksym/sec30100000 Hz51.0 dBmV
4LockedATDMA25120 Ksym/sec36500000 Hz51.0 dBmV

Current System Time: Wed Mar 4 18:47:52 2020System Up Time: 02:35:08


@vkdelta wrote:

pls provide power value screenshot as well.



@vkdelta wrote:

pls provide power value screenshot as well.


 

Message 4 of 11
Hawkwing2000
Aspirant

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

I bought a new cable off amazon, thanks for the tip!  We'll see if that does it!

Message 5 of 11
FURRYe38
Guru

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Let us know how it goes...

Message 6 of 11
vkdelta
NETGEAR Expert

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

yes, too high Upstream power.

 

do you have splitters? If yes, Please remove it.

 

What do you mean by reboot? Is the whole box rebooting?  or just loosing internet.

Message 7 of 11
Hawkwing2000
Aspirant

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

I don't have any splitters, and I'm getting a new coax cable.  What else could be causing the higher power output?

Message 8 of 11
FURRYe38
Guru

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Have the ISP check the signal and line quality UP to the modem. 

Message 9 of 11
Hawkwing2000
Aspirant

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Ok so checked and there is a splitter, but I think it's necessary since I have the modem and a DVR system.  The cable comes from the call and into the splitter where one goes to the DVR and the other to the modem.  I've replaced one cable and buying a new splitter hoping that fixes it.  Is there a way to do this without the splitter?

Message 10 of 11
FURRYe38
Guru

Re: I own a C6300 v2 AC1750 Router Modem combo and it randomly reboots

Have the ISP put in a two dedicated lines, one to the modem and one to the DVR from there service box. 

Message 11 of 11
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