Re: Qwest desires mesh to reduce unused standby capacity

[Adrian Chadd <adrian () creative net au>]

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