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Forum Discussion
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...
Thanks for the response,but Disable Port Scan and DoS Protection is not checksed so it is supposed to be on and Respond to Ping on Internet Port is also unchecked, so it doesn't respond to a ping.
Just so you know, the url is opendns.com and opendns is now a part of Cisco.
The comcast line staff have been out and set up monitoring of my line. I had two significant drops thus far. They are now monitoring every box from our pole back to the main switch.
I propose to them that I change my DNS location and see if that helps. They thought it a good idea. Don't understand why the Comcast DNS server would DoS Attack my IP.
Is anyone else on Comcast having the same issue in the Chicago area for 75.75.75.75 or 75.75.76.76?
I think I may have found a solution...at least for me.
I purchased one of these C7000-100NAS units and swapped it back for another one. I too had Comcast say that they could find NOTHING wrong.
I put the router into bridge mode, and called Comcast one last time. They wanted me to put the unit back into router mode; in an effort to be expeditious, I performed a hardware reset to get it back into router mode.
Note that this reset is not just a disconnect from power and restart, it is a full hardware reset where the reset button is pressed and held for 7 seconds ( I held for 20).
That did the trick!
I did not see anyone in this thread mention a hardware reset as described above. Many think a disconnect from power is a reset.I have reset it three times and it works like a champ. No delay...performance is fantastic. Been running for a couple of weeks!
This may not resolve everyone else's issue but it sure resolved it for me.
When this unit works, it screams.
Good luck to everyone.