[102817] in North American Network Operators' Group
Re: Qwest desires mesh to reduce unused standby capacity
daemon@ATHENA.MIT.EDU (Adrian Chadd)
Thu Feb 28 09:53:30 2008
Date: Thu, 28 Feb 2008 23:54:05 +0900
From: Adrian Chadd <adrian@creative.net.au>
To: Joe Abley <jabley@ca.afilias.info>
Cc: Adrian Chadd <adrian@creative.net.au>, nanog@merit.edu
In-Reply-To: <BB67BE59-19E8-46B1-A13A-E548F57F2B48@ca.afilias.info>
Errors-To: owner-nanog@merit.edu
On Thu, Feb 28, 2008, Joe Abley wrote:
>
> On 28-Feb-2008, at 09:26, Adrian Chadd wrote:
>
> >Then you probably haven't been on the ass end of a continental fibre
> >link
> >drop. That actually mattered.
>
> If both sides of your SONET ring drop, then surely you're as dead in
> the water as you would be if each side of the ring was being used as a
> separate, unprotected circuit.
>
> (But quite possibly I'm missing your point.)
Well, the "someone goes and uses as much of their link capacity as they
can, then they lose a 10ge circuit, and suddenly everything is degraded
beyond usefulness."
I'm way, way out of the loop with such things these days, but the few times
this has happened on a specific Perth <-> Sydney circuit which almost
everyone seems to use, -everything- degrades. As in, Perth seems almost
completely isolated from the rest of the country. I'm very surprised said "O"
provider doesn't have a redundant path for all the MPLS tunnels that happen
to go over it. :)
Adrian
