[154951] in North American Network Operators' Group
RE: Managing free pairs to prevent DSL sync. loss
daemon@ATHENA.MIT.EDU (Matlock, Kenneth L)
Tue Jul 17 11:14:21 2012
Date: Tue, 17 Jul 2012 09:13:33 -0600
In-Reply-To: <24359.1342537189@turing-police.cc.vt.edu>
From: "Matlock, Kenneth L" <MatlockK@exempla.org>
To: <valdis.kletnieks@vt.edu>,
"John Souvestre" <johns@sstar.com>
Cc: NANOG Mailing List <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Yeah, grounding both ends will result in some current traversing across
the pairs all the time because of differences in ground potential over
long-ish distances.
Ken Matlock
Network Analyst
303-467-4671
matlockk@exempla.org
-----Original Message-----
From: valdis.kletnieks@vt.edu [mailto:valdis.kletnieks@vt.edu]=20
Sent: Tuesday, July 17, 2012 9:00 AM
To: John Souvestre
Cc: 'NANOG Mailing List'
Subject: Re: Managing free pairs to prevent DSL sync. loss
On Tue, 17 Jul 2012 09:15:59 -0500, "John Souvestre" said:
> Have you considered grounding one end (or both) of the free pairs? =20
> Perhaps this would reduce the amount of noise they pick up.
Grounding both ends will probably result in "hilarity ensues". And I
suspect that Anurag can't ground the free pairs, because the copper
belongs to the provider.
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