If you noticed your Comcast sites all over the country were down last night it was due to a botched firmware upgrade pushed to many Cisco modems. Comcast Business uses Cisco DPC3941B modems in many regions and these were particularly affected.
Comcast can't reboot these modems remotely anymore. They all need to be physically power cycled and will downgrade their firmware to an operational version during the boot process. I've had modems impacted from coast to coast, but not in every region. The first wave of outages began yesterday 9/30 at 5:47pm EDT, but many other sites didn't experience their first outage until well after midnight. Just an FYI if anyone else saw their branch networks in shambles this morning. The Comcast master "service incident" number is: SI045791942 - Cary
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