Reply

Re: Have to unplug C7100V constantly.

Homeuser66
Guide

Have to unplug C7100V constantly.

I have had this modem now for a little over 2 years. I haven't had an issue until now. Just recently, like with in a month or so, I have ben losing my wifi connections. (Not sure of the ethernet connections) I would have to constantly reset (Unplug, or remotely) the modem and everything would be fine again for a week or so, until I have to do it again. I'm not sure why this is happening.  I don't know what the Event Logs mean. I will add them here in hopes someone could tell me. If it was trying to update and it didn't take, how do I force it?

 

I have Comcast (Xfinity) with Voice.

Netgear C7100V

Firmware Version: V2.01.42

Windows 10 PC

 

 

TimePriorityDescription
2020-02-04, 05:50:34.0Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-02-04, 05:49:58.0Warning (5)Unicast DSID PSN startup error
2020-02-04, 02:00:48.0Notice (6)SW download Successful - Via Config file
2020-02-04, 01:59:32.0Notice (6)SW Download INIT - Via Config file d11_v_c7100vims_silver_c02.cm
2020-02-04, 01:57:17.0Critical (3)Resetting the cable modem due to docsDevResetNow
2020-02-03, 01:26:11.0Warning (5)MDD message timeout;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-02-02, 12:27:31.0Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-02-02, 04:06:49.0Warning (5)MDD message timeout;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-02-01, 17:43:27.0Warning (5)MDD message timeout;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-02-01, 17:43:27.0Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-31, 13:58:43.0Critical (3)Resetting the cable modem due to docsDevResetNow
2020-01-31, 02:04:48.0Warning (5)MDD message timeout;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-29, 06:43:37.0Warning (5)MDD message timeout;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-29, 06:43:37.0Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-20, 19:07:52.0Warning (5)MDD message timeout;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-20, 19:07:52.0Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-15, 10:28:37.0Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=b0:b9:8a:d3:71:40;CMTS-MAC=18:8b:9d:4a:3d:61;CM-QOS=1.1;CM-VER=3.0;
2020-01-15, 10:28:02.0Warning (5)Unicast DSID PSN startup error
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not EstablishedNotice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Message 1 of 13
FURRYe38
Guru

Re: Have to unplug C7100V constantly.

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. 

 


What channels are you using? Auto? 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?

 

 

My Setup Internet Cable 1000↓/50↑ CAX80 Mode Mode | ISP SparkLight | Wifi Router Orbi CBR752 v4.6.7.7(Gateway Mode), Wired BackhaulSwitches Netgear GS105/8 | 

Additional NG HW: C7800/CM1100/CM1200/CM2000, Orbi CBK40, CBR750, RBK953(v6.0.3.68) & XR450(v130), RBK853 v4.6.7.5(AP) & RBK752 v4.6.7.5, RBK50(v23), SXK30(v110), R7000(v34), R7800(v84), R7960P(v84), RAXE500(v78), EX7500/EX7700, GS308v3 and WNHDE111


 


 


Testing

Message 2 of 13
Homeuser66
Guide

Re: Have to unplug C7100V constantly.

Hi, Thanks for the reply!
To answer your questions:
What channels are you using? Auto? I'll have to look, but not sure what that has to do with me having to restart. The modem lights were PHONE: Flashing, no dial tone. Wifi: was also flashing. Basically, I had no service. I was not home and the last time, I forgot to even check to see if my network cable to my pc, was working (connected).
Any Wifi Neighbors near by? Yes.
If so, how many? 3 others.
It looks like I was being sarcastic up 👆 there, but I'm not. So I apologize for that.
I used to work for Comcast as an installer. I have an excellent Signal to the modem. I have a home run from my modem to the ground block.
I'm wondering if there was anything wrong with the actual modem, or the software.
I have quad core cable RG6 ran.
Did you see the failure in the event log? Does it mean anything?
Message 3 of 13
FURRYe38
Guru

Re: Have to unplug C7100V constantly.

I see alot of CRITICALs listed. Possible this is signal related or ISP service related. 

@vkdelta 

 

So when all this happens do both wired, wireless and phone all go down or does wired still have access to the internet during this time frame?

 

You might find a store or online store with a good refund policy and get you a 2nd modem gatway unit to test with and see if this different unit exhibits the same thing. 

My Setup Internet Cable 1000↓/50↑ CAX80 Mode Mode | ISP SparkLight | Wifi Router Orbi CBR752 v4.6.7.7(Gateway Mode), Wired BackhaulSwitches Netgear GS105/8 | 

Additional NG HW: C7800/CM1100/CM1200/CM2000, Orbi CBK40, CBR750, RBK953(v6.0.3.68) & XR450(v130), RBK853 v4.6.7.5(AP) & RBK752 v4.6.7.5, RBK50(v23), SXK30(v110), R7000(v34), R7800(v84), R7960P(v84), RAXE500(v78), EX7500/EX7700, GS308v3 and WNHDE111


 


 


Testing

Message 4 of 13
vkdelta
NETGEAR Expert

Re: Have to unplug C7100V constantly.

Please provide power values screenshot as well.

it looks like line has an issue.

 

Please confirm cable and connectors are ok.

Please check another connector in the house. 

Message 5 of 13
Homeuser66
Guide

Re: Have to unplug C7100V constantly.

Where do I find this power data?
Message 6 of 13
vkdelta
NETGEAR Expert

Re: Have to unplug C7100V constantly.

in the main page, there should be an an icon called Cable connection. Once you click it, you will lot of values in a table format. Take screenshots and put it on imgur and let us know the links. 

Message 7 of 13
Homeuser66
Guide

Re: Have to unplug C7100V constantly.

Hope this helps? 

 

https://imgur.com/zk3Wnsn

 

 

Netgear C7100V Cable Connection Info. 

 

 
 
 
Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency

<tabindex=-1>Startup Procedure</tabindex=-1>

ProcedureStatusComment
Acquire Downstream Channel555000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
Configuration FileOK------------
SecurityEnableBPI+

<tabindex=-1>Downstream Bonded Channels</tabindex=-1>

ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM25617555000000 Hz-4.6 dBmV39.7 dB8910
2LockedQAM25618561000000 Hz-4.6 dBmV39.3 dB11560
3LockedQAM25619567000000 Hz-4.6 dBmV39.6 dB15370
4LockedQAM25620573000000 Hz-4.9 dBmV39.5 dB19030
5LockedQAM25621579000000 Hz-4.9 dBmV39.6 dB19120
6LockedQAM25622585000000 Hz-5.1 dBmV39.4 dB27010
7LockedQAM25623591000000 Hz-5.3 dBmV39.2 dB49520
8LockedQAM25624597000000 Hz-5.6 dBmV39.1 dB70580
9LockedQAM25625603000000 Hz-6.1 dBmV38.9 dB96760
10LockedQAM25626609000000 Hz-6.3 dBmV38.8 dB104500
11LockedQAM25627615000000 Hz-6.8 dBmV38.4 dB149870
12LockedQAM25628621000000 Hz-7.1 dBmV38.4 dB200990
13LockedQAM25629627000000 Hz-7.2 dBmV38.0 dB255050
14LockedQAM25630633000000 Hz-7.5 dBmV37.9 dB372400
15LockedQAM25631639000000 Hz-7.4 dBmV38.0 dB324280
16LockedQAM25632645000000 Hz-7.6 dBmV37.9 dB425820
17LockedQAM25633651000000 Hz-8.0 dBmV36.8 dB00
18LockedQAM25634657000000 Hz-8.3 dBmV36.6 dB20
19LockedQAM25635663000000 Hz-8.6 dBmV36.2 dB10
20LockedQAM25636669000000 Hz-8.5 dBmV36.2 dB00
21LockedQAM25637675000000 Hz-8.6 dBmV36.1 dB00
22LockedQAM25638681000000 Hz-8.6 dBmV36.1 dB00
23LockedQAM25639687000000 Hz-8.6 dBmV36.2 dB00
24LockedQAM25640693000000 Hz-8.6 dBmV36.3 dB00

<tabindex=-1>Upstream Bonded Channels</tabindex=-1>

ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA45120 Ksym/sec17300000 Hz45.3 dBmV
2LockedATDMA15120 Ksym/sec36500000 Hz45.5 dBmV
3LockedATDMA25120 Ksym/sec30100000 Hz45.5 dBmV
4LockedATDMA35120 Ksym/sec23700000 Hz45.5 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

Current System Time: Fri Feb 07 08:27:34 2020System Up Time: 74:39:06

Message 8 of 13
Homeuser66
Guide

Re: Have to unplug C7100V constantly.

@vkdelta
Any ideas?
Message 9 of 13
vkdelta
NETGEAR Expert

Re: Have to unplug C7100V constantly.

@Homeuser66 

 

I saw the power table and it looks good but it does not 

 

Are you seeing disconnected with WIRED connection as well? 

Are the disconnections specific timing? 

Is the disconnection on specific laptop/client or all the clients?   (If yes, have you upgraded to latest WIFI driver on the laptop)

Do you see 2G/5G LED going off when it happens?

 

Message 10 of 13
Homeuser66
Guide

Re: Have to unplug C7100V constantly.

@vkdelta 

 

Are you seeing disconnected with WIRED connection as well? I haven't been able to check the wired connection, the times I had this issue where I had to disconnect/Reset the modem, I was not home. I had to describe to my wife over the phone, what to look for and do. The only time I could even think of doing this was at 3am and I didn't want to turn on the Desktop, I just wanted to reset modem again. Coincidentlaly, since this time I reset the modem, I haven't had this issue again. 

 

Are the disconnections specific timing? They were random. 3pm durring the day and 2am a few days later. I forgot what other times. 

 

Is the disconnection on specific laptop/client or all the clients?  (If yes, have you upgraded to latest WIFI driver on the laptop) No, it's on all random devices, Laptops, Cell Phones, Tablets, and Firesticks. The Wifi symbols on the modem were flashing, telling me they were disconnected. 

 

Do you see 2G/5G LED going off when it happens? Yes.

Message 11 of 13
Homeuser66
Guide

Re: Have to unplug C7100V constantly.

@vkdelta

Any ideas?
Now it's randomly restarting on its own. Had Comcast out to check levels. They are good. Broken pretty on tap, he said might be causing issue. Not sure.
Message 12 of 13
FURRYe38
Guru

Re: Have to unplug C7100V constantly.

I would continue to post in your other thread about this:

https://community.netgear.com/t5/Cable-Modems-Routers/C7100V-Modem-Keeps-Randomly-Restarting/td-p/19...

 

Let keep this to one post thread so as not to make things confusing. 

My Setup Internet Cable 1000↓/50↑ CAX80 Mode Mode | ISP SparkLight | Wifi Router Orbi CBR752 v4.6.7.7(Gateway Mode), Wired BackhaulSwitches Netgear GS105/8 | 

Additional NG HW: C7800/CM1100/CM1200/CM2000, Orbi CBK40, CBR750, RBK953(v6.0.3.68) & XR450(v130), RBK853 v4.6.7.5(AP) & RBK752 v4.6.7.5, RBK50(v23), SXK30(v110), R7000(v34), R7800(v84), R7960P(v84), RAXE500(v78), EX7500/EX7700, GS308v3 and WNHDE111


 


 


Testing

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