I experienced this outage last night, which doesn't seem to be a routing issue, because the cable modem can't establish connection with the headend(CMTS). but t

I experienced this outage last night, which doesn't seem to be a routing issue, because the cable modem can't establish connection with the headend(CMTS). but the the outage impacted area is big whole bay area and some other states, which seems to suggest issue happens on a central system, not just a few malfunctioned CMTS; my guess it is backend system related to managing cable modem or CMTS