[57707] in North American Network Operators' Group
Re: DS3 Coax..
daemon@ATHENA.MIT.EDU (David Lesher)
Sat Apr 19 21:22:02 2003
From: David Lesher <wb8foz@nrk.com>
To: nanog@merit.edu (nanog list)
Date: Sat, 19 Apr 2003 21:19:57 -0400 (EDT)
In-Reply-To: <ODEBLDAHFCKHJIJPLJGLIEGOCMAA.tim@baseworx.net> from "Timothy R. McKee" at Apr 19, 2003 09:12:37 PM
Reply-To: wb8foz@nrk.com
Errors-To: owner-nanog-outgoing@merit.edu
Speaking on Deep Background, the Press Secretary whispered:
>
>
> Definately.
>
> You most emphatically do NOT want copper going across your parking lot.
> Besides the danger from lightning strikes and other electrostatic discharges
> you run the risk of ground potentials differing significantly. You could
> wind up with a significant amount of current flowing across the coax just to
> balance building grounds. (This is why telcos insist on a single ground
> point and have that point connected to an array of ground rods driven deep
> in the ground.)
Agreed.
Fiber is Your Friend [tm].
Ground loops and potential differences will not only have you
ripping your hair out, but you stand to lose DS-3 ports. Now
some guy told me that such costs a bit more than the RS-232 &
Ethernet ports I regularly see die, but that's likely just a rumor.
--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
