nanog mailing list archives
Re: PoE, Comcast Modems, and Service Outages
From: Jay Hennigan <jay () west net>
Date: Tue, 29 Mar 2022 13:25:57 -0700
On 3/29/22 11:21, Aaron de Bruyn via NANOG wrote:
I just got off the phone with a Comcast tech, and wanted to double-check my sanity.Somehow in the last 6 months I've managed to reach the exact same rep twice when dealing with an outage or a degraded service event.I asked him to remotely reboot the modem because there was high packet loss.Both times I've talked with him, he noted the high packet loss, started to reboot the modem, and then asked me point-blank if we had any PoE switches on our network.When I said "yes", he said I needed to disable PoE because it messes with the Comcast modems and he can see "buildups" in his graphs that show power is "leaking" to the Comcast modem every 24 hours.
Obligatory relevant xkcd: https://xkcd.com/806/ -- Jay Hennigan - jay () west net Network Engineering - CCIE #7880 503 897-8550 - WB6RDV
Current thread:
- Re: PoE, Comcast Modems, and Service Outages, (continued)
- Re: PoE, Comcast Modems, and Service Outages Aaron de Bruyn via NANOG (Mar 29)
- Re: PoE, Comcast Modems, and Service Outages Blake Hudson (Mar 29)
- Re: PoE, Comcast Modems, and Service Outages Livingood, Jason via NANOG (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Jay Hennigan (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Joe Greco (Mar 30)
- Re: PoE, Comcast Modems, and Service OutagesPyle Abraham Y. Chen (Mar 31)
- Re: PoE, Comcast Modems, and Service OutagesPyle Grant Taylor via NANOG (Mar 31)
- Re: PoE, Comcast Modems, and Service Outages Aaron C. de Bruyn via NANOG (Mar 29)
- Re: PoE, Comcast Modems, and Service Outages Brie (Mar 29)
- Re: PoE, Comcast Modems, and Service Outages Livingood, Jason via NANOG (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Aaron de Bruyn via NANOG (Mar 30)