IGPs in use

Wed Oct 14 02:27:33 UTC 1998

At 07:12 PM 10/13/98 -0700, Danny McPherson wrote:
>
>> How does this affect the hierarchy of the network since all iBGP speakers 
>> must be fully meshed? 
>
>It'd all have to be flat...
>
>Recall the BGP rule: 
>
>one iBGP speaker mustn't advertise routes to another iBGP speaker if they
were 
>learned from a third iBGP speaker.

This behavior is easily modified with route reflectors and/or confederations.

Additionally, as someone pointed out, not having a full IBGP mesh does not
necessarily hurt.  Simply because a router does not have the full routing
table in no way implies that router does not have global connectivity.  How
many people have routers not running BGP at all, more or less full routes?

>-danny

TTFN,
patrick

I Am Not An Isp
www.ianai.net
"Think of it as evolution in action." - Niven & Pournelle