DPC3941 Failure to connect

[captainkc]

I have a DPC3941T modem/router which is configured and seems to be working correctly.  However, if I connect to the admin interface on the router and then disconnect, subsequent attempts to connect get a timeout failure, "The server at 10.0.0.1 is taking too long to respond."  In order to reconnect to the router, I have to pull the power and force a restart.  Once that is done, I can again connect to the router one time - then it is back to pulling the power.  The router is up and passing traffic both wireless and wired, and I can ping the router address with less than 5mS delay.  Does anyone have any suggestions about what might be causing this problem and how to reconnect to the modem without having to power cycle it?

[rcampbel1]

I have the same problem.  After a reset there is a short window during which the web admin interface at 10.0.0.1:80 is accessible.  After that, not only does the page not respond, port 80 is closed until the next reset.

There also seems to be a number of Comcast customers who have discovered this bug, which seems to be present in both DPC3939 and DPC3941T firmware and has lingered for almost two years now.

[http://forums.xfinity.com/t5/Home-Networking-Router-WiFi/Can-t-log-onto-10-0-0-1-DPC3941T/m-p/2556351]

[http://forums.xfinity.com/t5/Home-Networking-Router-WiFi/DPC3941T-GUI-keeps-crashing/m-p/2517740/highlight/true#M89746]

[http://forums.xfinity.com/t5/Home-Networking-Router-WiFi/DPC3941t-Gateway-Port-Mapping/m-p/2563516/highlight/true#M92631]

[http://forums.xfinity.com/t5/Home-Networking-Router-WiFi/Admin-Page-for-Cisco-DPC3939-only-works-right-after-reboot/td-p/2570608]

[http://forums.xfinity.com/t5/Home-Networking-Router-WiFi/Opening-10-0-0-1-after-changing-SSID-and-wireless-passphrase/td-p/1912877]

[http://forums.xfinity.com/t5/Home-Networking-Router-WiFi/unknown-node-on-my-LAN/m-p/2448127]