I’ve had a SB6190 that was working fine for more than a year. A few weeks ago, it started rebooting itself multiple times per day, but once it rebooted, it reconnected to Xfinity just fine. Unfortunately, it would just do it again in a few hours, and obviously, internet service is interrupted for about four minutes each time.
Xfinity sent a service tech, who checked and said there is nothing wrong with their cable. He said the SB6190 should be fully supported on the Xfinity network, and suggested I buy a new one. I did buy a new one, and it behaves exactly like the one that is more than a year old. It works fine, until it reboots itself, and it does it just a frequently as my original SB6190.
What do I telll Xfinity, since it’s obviously their network? Two different SB6190s (both tested when plugged into the wall and also tested when plugged into a UPS/surge protector) are acting identically. In addition, there seems to be two entries in the logs that correspond to the timing of the reboots:
“No Ranging Response received - T3 time-out”
followed by
“Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out”
This can’t be a coincidence. It’s there each time just when the modem reboots. What is going on? Is Xfinity telling my modem to reboot, or are they failing to respond correctly, so my modem reboots itself, or is it something else?
