From: Jesper Skriver (no email)
Date: Wed Apr 04 2001 - 11:09:12 EDT
On Tue, Apr 03, 2001 at 07:51:41PM -0400, RJ Atkinson wrote:
> At 18:35 03/04/01, Jesper Skriver wrote:
>
> >Don't know how the world looks like in the US, but here a SDH/Sonet
> >provider will never guarentee diversity of his/her circuit to that
> >of a different provider,
>
> Interesting, though they do guarantee that to NATO
> circuits.
The company I work for, can and do provide diverse circuits, but they
won't guarentee diversity between that and one of a different provider,
the reasoning behind this is, that one cannot know if/when the other
provider reroute their circuit, so that there is no diversity any more.
> smd, are you able to get diverse local paths over there ?
>
> >often the end user can be almost sure that at least
> >the last few km will be in the same duct, as the local communities
> >demand that the providers cooperation when digging fiber into the
> >ground...
>
> Obviously there is a concern if everyone is in the same
> duct, but if one builds with rings like sensible engineers,
SDH/Sonet protection removes quite a bit of the problem yes, but often
it's usefull to get 2 circuits with diverse routing (and without
protection) instead of a single with protection, and the price is
usually in the same order for both.
We always get multiple circuits with diverse routing instead of a single
circuit with protection if we can.
/Jesper
-- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: FreeBSD committer @ AS2109 (A much smaller network ;-) One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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