[20458] in North American Network Operators' Group
Re: IGPs in use
daemon@ATHENA.MIT.EDU (I Am Not An Isp)
Tue Oct 13 22:39:12 1998
Date: Tue, 13 Oct 1998 19:27:33 -0700
To: nanog@merit.edu
From: I Am Not An Isp <patrick@ianai.net>
In-Reply-To: <199810140212.CAA22264@ice.genuity.net>
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
