C7000 Router Modem dropping WiFi periodically on Mac OS X Catalina

Question

Hello,&nbsp;&nbsp;I have been battling this issue for about 2 months or so.&nbsp;&nbsp;I have a C7000 Nighthawk Cable Modem Router. Firmwire is V1.01.32. Compure is a 2017 MBP running Mac OS X 15.0 Catalina.&nbsp;&nbsp;The WiFi is not stable. When I reboot the Router I can connect to either of my two networks (one is ac and the other is b/g/n) and the speed is good (maybe 150Mbps on the b/g/n).&nbsp;&nbsp;I have&nbsp;1. Reset the router (once).2. Rebooted numerous times.3. I have not changed the cable.4. I have not reflash firmware or done factory reset. Open to doing this.&nbsp;Isn't there some log somewhere where I can look and see what is going on?&nbsp;&nbsp;Thanks,&nbsp;Bryan

FURRYe38 · Answer

Do you know if you were having wifi problems before OSX 10.15?

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?

bschmiedeler · Answer

&gt;&gt;Do you know if you were having wifi problems before OSX 10.15?&nbsp;&nbsp;Approximately, yes. I started running Catalina betas in late July. However, I don't think that is the issue, as I have a work MBP which I have NOT upgraded, and it still suffers from these problems. Also, our iDevices will sometimes have issues as they of course prefer WiFi over cellular. Sometimes if I am on my iPhone or iPad elsewhere in the house network speed will start to go south and I turn off WiFi and go to cellular and speeds are great.&nbsp;However, I manage the router from the Mac that is running Catalina and was running the Bets. I have not tried connecting my home MBP directly to the router as I need a USB-C to ethernet converter.&nbsp;&nbsp;&gt;&gt;What channels are you using? Auto?&gt;&gt;Try setting manual channel 1, 6 or 11 on 2.4Ghz&gt;&gt;and any unused channel on 5Ghz.&nbsp;5Ghz is manually set to 153.2.4Ghz was auto but manually changed it to 11.&nbsp;&gt;&gt;Any Wifi Neighbors near by? If so, how many?&nbsp;Too many. Not neighbors really, but devices. I am using Netspot to moniter WiFi (see attached picture). However, things were running very well for about 18 months, WiFi just worked. No idea what the heck happened.&nbsp;Should I try a full factory reset?&nbsp;&nbsp;Thank you for your suggestions. Looking at this as a learning experience.+&nbsp;&nbsp;

FURRYe38 · Answer

I would factory reset and setup from scratch.&nbsp;&nbsp;ALso turn OFF all other wifi devices that put out a wifi signal temporarily to see if this helps resolve problems.&nbsp;

bschmiedeler · Answer

I completely reset the C7000. I have not been able to turn off all WiFi devices yet to try that.&nbsp;At first I thought the issue was fixed as speed was very good! But over the last several days I have noticed that my speed varies greatly, from 180 Mbps down to less than 1. At least once a day the WiFi signal is totally gone and I have to turn the unit off and back on.&nbsp;Further investigation revelaed many DoS attacks in the logs (see picture), but I have read that Netgear equipment can report false positives. If so, how the heck could I tell the difference between a real attack and a false positive?&nbsp;Could the C7000 just be bad?&nbsp;&nbsp;

FURRYe38 · Answer

I would do a whois on those IP addresses comming from 209....Ask your ISP to change the IP address on the modem as well.&nbsp;Also try to fully turn OFF ALL other wifi devices and signals to help narrow down and isolate there problems maybe coming from.&nbsp;

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C7000 Router Modem dropping WiFi periodically on Mac OS X Catalina

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