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.

-Golan

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. --Peter