I'm at my wit's end and really hoping someone can help. For the last couple years Xfinity internet service has been pretty rock solid. This weekend I started running into lots of issues with very frequent (multiple times an hour) internet dropouts that require me to reboot my modem. Once the modem comes back up the speeds are amazing and as they usually are....that is...until the next disconnect.
Due to previous issues I've already replaced about 70% of the coax in my house, minimized all splits from where the coax comes out of the ground to where it goes to the cable modem. I've got 1 multi-splitter between the source line and my cable modem.
I've got an Arris SB8200. After 2 days of constant reboots, I contacted online customer support. They reprovisioned my modem and had me manually reset it. It seemed to work for a while but alas, it's been disconnecting a lot again.
This is the error that keeps cropping up my modem's event log:
"No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=00:01:5c:9b:12:61;CM-QOS=1.1;CM-VER=3.1;"
As you can see from the cable modem status below, Channel 48 seems to have a pretty low SNR and it seems to fluctuate between 27-31 db.
Could some of the super smart folks to help me out here with what may be going on? Is it possible that there's an issue upstream from my house causing these problems?
Thanks everyone for the help. Cheers!
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