[89223] in North American Network Operators' Group
Re: Presumed RF Interference
daemon@ATHENA.MIT.EDU (Iljitsch van Beijnum)
Sun Mar 5 17:59:57 2006
In-Reply-To: <440B6819.523C8987@aset.com>
Cc: nanog list <nanog@merit.edu>
From: Iljitsch van Beijnum <iljitsch@muada.com>
Date: Sun, 5 Mar 2006 23:59:20 +0100
To: "Jon R. Kibler" <Jon.Kibler@aset.com>
Errors-To: owner-nanog@merit.edu
On 5-mrt-2006, at 23:37, Jon R. Kibler wrote:
> 1) How could a bad ground cause DSL line noise that ia
> inaudible? Also, the noise is on the telco side, not the LAN side.
> 2) Why would it be blowing DSL routers that are isolated from
> the LAN by a switch and another router? And, all of this equipment
> is in the same rack, on the same ground, and on the same UPS.
This makes me think of a place where they used copper lines that ran
alongside rail road tracks, and each time a train came by the leased
line modems would go haywire. Electrical trains put a lot of current
in the ground...
