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Re: BOOM! there goes WorldCom
From: Peter Lothberg <roll () Stupi SE>
Date: Fri, 18 Jul 97 4:20:47 MET DST

On Wed, 16 Jul 1997, Nathan Stratton wrote:

Ya, we are going to kill worldcom for this one, they say they have 496 DS3
connections down. We have 3 connections into our Palo Alto POP, and
Worldcom said they all are over different fiber paths. As of right now
they all are down.

You should never trust what your sales people say.  When designing your
backbone, its important to ask them for your DLRs (design layout records)
so that you can see physically, with your own eyes, the paths involved.


There is someting called "Sonet" out there, if provisioned as 1+1, eg
a backup path for each primary path it's capable of switching your
circiuts into the protect path in less than 100ms...

So, when getting capacity make sure that it is provisioned over
1+1 sonmet and thet the local loop also is redundant and thet you
get a primary and protect router.


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