nanog mailing list archives
Re: PoE, Comcast Modems, and Service Outages
From: Jay Hennigan <jay () west net>
Date: Wed, 30 Mar 2022 11:08:36 -0700
On 3/30/22 10:52, Livingood, Jason via NANOG wrote:
Could well be from noise ingress - lots of work goes into finding & fixing ingress issues. Hard to say unless we look in detail at the connection in question and the neighborhood node.
Packet loss absolutely could be noise ingress. That's measurable in terms of s/n ratio and it's on the outside plant HFC side.
But noise doesn't "build up", and PoE is DC, and PoE is on the LAN side, separated from Comcast's equipment by a router. Level 1 Comcast guy is simply wrong.
-- 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 Grant Taylor via NANOG (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Aaron de Bruyn via NANOG (Mar 29)
- Re: PoE, Comcast Modems, and Service Outages Grant Taylor via NANOG (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Kord Martin (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Jay Hennigan (Mar 30)
- Re: PoE, Comcast Modems, and Service Outages Niels Bakker (Mar 29)
- Re: PoE, Comcast Modems, and Service Outages Blake Hudson (Mar 29)
- 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 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)