Re: multi6

[Geoff Huston <gih@telstra.net>]

>that's the 'redundancy' requirement.
>
>there is also the 'load balancing' requirement.  when an entity is paying
>for two oc3s (or t1s or whatever), they seem to want to get benefit out of
>both when things are running normally.


Spot on Randy.

A lot (most?) of the growth pressure in today's BGP table comes from using
BGP to load balance - i.e. announce differing sets of more specific prefixes
down different wires in order to (crudely) perform inter-domain traffic
engineering for load balancing.

Its a real requirement in operational networks