I’m not 100% sure, but I think one of my modems rebooted itself earlier this week. It was offline for about 2 mins, according to the Andrews and Arnold CQM graphs, and I was sent two warning emails about the link going down and back up. I can’t be at all sure about accuracy of that duration. It takes 70-80 s for the modem to retrain / resync in the normal case, but a boot and retrain takes very roughly 2 mins. The logs in the modem were wiped and started at the time the modem came up so that does seem like solid proof that the modem did reboot.
Has anyone else had this happen?