I know that Comcast's edge will block incoming traffic if a customer's 'modem' is offline.
That was an interesting support call once. The line was up and we could hit some stuff (on-net) from the location but off-net was dead and all traceroutes to them from off-net died one-two hops after crossing into Comcast. Power cycling the modem re-registered it with whatever database their edge uses to and sorted everything. -----Original Message----- From: Outages <outages-boun...@outages.org> On Behalf Of Rusty Dekema via Outages Sent: Wednesday, July 31, 2019 12:01 To: Jordan Morris <jmor...@crosswindvoip.com> Cc: outages@outages.org Subject: Re: [outages] Comcast Issues Central & East It is unclear to me whether this is related, but my Comcast "business" (DOCSIS) line in southeast Michigan went completely down around 10:43 a.m., Eastern Daylight Time (UTC-4) this morning. Comcast's website said that this was a known outage and gave an estimated restoration time of approximately three hours. In reality, the service came back up around 10:55 a.m. During the outage, the route to my /28 seemed to have been withdrawn from Comcast's internal network; traceroutes toward it from the Chicago area died within Comcast's network in the Chicago area. I was not physically present at the premises, so I was unable to determine whether this was a local / layer 1 / physical plant problem, or part of a wider problem. -Rusty On Wed, Jul 31, 2019 at 10:12 AM Jordan Morris via Outages <outages@outages.org> wrote: > > Anyone else seeing issues with Comcast on the Central and East coast. We are > seeing packet loss with on Comcast connections connecting to devices on the > West coast. Getting lots of alerts for our monitoring on the West to Central > but clean on our Central to Central monitoring. > > > > > > > > _______________________________________________ > Outages mailing list > Outages@outages.org > https://puck.nether.net/mailman/listinfo/outages _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages
