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C7000-100NAS randomly drops internet connection
Hello, My C7000-100NAS modem seems to randomly drop it's Comcast connection. This happen on 2.4 ghz, 5 ghz, and wired connections. There is no pattern, however the dropped connection usually last...
Please PM me on this topic.
we are aware of some resets done by the ISP for specific customers.
Do you have any information about how to stop these annoying interuptions of interrnet access through the C3700 router/modem? Mine has been doing this and I would like to fix it if possible.
Thank you
did you find a solution to the problem...?? Same issue (timing sync failure) . Did reset, comcast checked----only wifi, ethernet works fine....
The C7000 was the problem. Spent a lot of time narrowing down the issue with the help of Comcast. They were very helpful, the tech even gave me his personal cell and helped with some diagnositcs off the clock. I did the typical reset, did not help. Did the factory restore...did not help. The C7000 would actually drop the WAN connection every 20 minutes. Nothing in the logs would indicate trouble, other than the Sync issues I noted earlier. Ruled out every device on the network. My only option was to replace the C7000. Netgear never responded. I will try and return it later this week because its still under warranty. Additional proof that it was the C7000, I replaced it with a Netgear CM1000 and it has been rock solid since minute one...no other changes on the network.
it´s a shame, but thanks!!!!
Have not solved it yet. Changed DNS from Comcast to another DNS. There are fewer hits against the cable modem, but our issues are happening in both Wifi and Wired.
2017-4-9, 18:50:16 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=b0:7f:b9:xx:xx:xx;CMTS-MAC=00:01:5c:7f:9a:5a;CM-QOS=1.1;CM-VER=3.0; Our MAC address is the first one listed in the event log. CMTS-MAC=00:01:5c:7f:9a:5a I believe is a Comcast Server somewhere.
The nic was made by MAC-Addr 00-01-5C-7F-9A-05 CADANT INC., USA
4343 Commerce Court - Ste. #207 - Lisle IL 60532.In our case I think that the issue has to do with stability of Comcast because of our last test which showed packet loss. I can get about 5 seconds of the beginning of calls, then nothing for about 20 seconds, then the call is ok. It is intermittent. If something would just break, we would know where the issue lies.
i have the same issue as this guy who started this thread. Did you/he get this fixed, i was on phone for 2 hours today with customer service changed some channels, did some tests, as soon as i hung up, same issues of being dropped from internet, doesnt matter, 5G or ethernet
Since CCutter asked. I never did get this fixed. Netgear was a complete dead end when it came to supporting the C7000. Tried several things and junked it. I did not give up on Netgear. I purchased a Netgear X10 R9000 wireless router and a Netgear Cable Modem CM1000. The combo has been running for well over a year now without any issues. Only down time has been for the necessary firmware updates. The only con is the cost. Of course, having said that it will probably prove me wrong.
Since I last posted, I got the replacement C7000, installed it and had about 18 hours of piece before the same thing happened. So I went to TWC (Spectrum) and got a modem/router from them and installed it. In less than 6 hours, I was getting T3 & T4 errors, so I called them back up and they will be sending a techinician out for a second visit on 21 Aug. I've got the C7000 connected again because frankly it has better features and is all around easier to use than the one they gave me (technicolor). I'll repost tomorrow after the visit. But after trying the ISP's solution and getting the same errors, I've got to believe it's an ISP signal issue, not the router/modem issue. Maybe having two seperate devices vice one combo, somehow compensates & masks the signal issues. Because I didn't have this issue till I went to the combo
- Netgear Technical support can’t fix this problem themselves.
I tried everything and played around with settings nothing worked. I noticed that it’s a router problem vs it’s modem.
My solution: used this product to serve only as a modem. Bought the GoogleFi and used it as a router using a mesh network. Problem solved.So my ISP came out a second time and put new connectors on all the cables inside and out, checked the connections and verified the signal is good. 45 minutes after he left, it lost connectivity. As junfitz did, I put the C7000 boat anchor into modem-only mode (netgear calls it bridge mode) and hooked up my old linksys EA8500 router. I did that about 6 hours ago and no loss of connectivity since (knock on wood). It's a shame because the netgear interface is great and it offered a lot of good feature (easiest shared external hard drive interface I've used).
Netgear support is in denial, they said there haven't been any reported issues like this on the C7000, I told them there was a 2 year, 5 page thread on the issue in the Netgear Community. Does their support staff even look at this!?