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Re: PoE, Comcast Modems, and Service Outages


From: "Aaron C. de Bruyn via NANOG" <nanog () nanog org>
Date: Tue, 29 Mar 2022 13:30:21 -0700

On Tue, Mar 29, 2022 at 1:12 PM Joe Greco <jgreco () ns sol net> wrote:

So if you want the $100 test to eliminate PoE electrical effects, get
a pair of media converters and run fiber between them.  Put the CPE on
the far end.  Optimize as appropriate if you have SFP-capable switches.


Sure--that would shoot down the "leaking non-existent PoE across a
motherboard and out another NIC" theory, but I was more thinking along the
lines of something like PoE causing RF interference or something.
I mean it's DC not AC so...it wouldn't be putting out a modulating signal
that interferes? ...honestly that's outside my knowledge domain.

-A

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