Re: Faster 'Net growth rate raises fears about routers

[RJ Atkinson <rja () inet org>]

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.  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,
then a single cut just means traffic goes the long way round.
Mind, if a backhoe disconnects one's building entirely from 
the ring or there are byzantine failures, no form of multi-homing 
will really save one.  

        At a previous job, we ensured that local transport 
came down one road into the front side of the building and 
a different local transport came down the back road into the 
back side of the building next door, then connected the buildings 
via fibre of our own.  Made for quite a nice setup actually.

Ran