From: Kemal Yildirim \(Netron\) (Kemal.Yildirim@netron.com.tr)
Date: Thu Mar 16 2006 - 15:51:21 GMT-3
A route reflector can be the client of another RR, and it can be
useful,if you are planning Clusters. Even in one cluster you can asign
multiple RRs, this is because of redundancy requirements.
But in this scenairo even there is no comment about minimum
configuration, I think it is better to keep it simple.
Regards,
Kemal
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Victor Cappuccio
Sent: Thursday, March 16, 2006 7:51 PM
To: ccie LAB
Subject: iBGP Route Reflectors (RR) Question..
Hello list,
First let me try to draw the topology to make the question. (IeLab1).
R2 ------ Fr ------ R1 ----- Ethernet ------ Sw1 ---- Sw2
All devices are running iBGP but they just have 1 BGP Session to each
other (not full meshed)
R2 == ibgp === R1 === ibpg == Sw1 == ibgp == Sw2
So there must be in this network, routers to function as distribution
center for the BGP Prefixes since iBGP is not fully meshed and the basic
requeriment of iBGP is that all Neighbors in the AS must be fully mesh,
and that could be relaxed with RR or Confederation. .- That's fine I
think
Ok Internetwork Experts Solutions makes Sw2 RR Client of Sw1 and R2 RR
Client of R1.
But what if R1 is configured to be client of Sw1, I change the initial
IE Configuration, and I have the same prefixes with or without Sw1 being
a RR for R1 in the BGP Table..
The only difference that I can see is that:
1st. IE Solution
R2 =(cl)= ibgp ==(rr)= R1 === ibpg == Sw1 =(rr)= ibgp ==(cl) =Sw2
In this case is more optimized since I only have 2 Routes configured as
Clientes (Cl)
2nd. My Crazy World
R2 =(cl)= ibgp =(rr) == R1 =(cl)== ibpg ==(rr) Sw1 =(rr)== ibgp ==(cl)=
Sw2
In this case I have 3 neighbors configured as Clients (cl)
Any comments are appreciated
Thanks!
Victor.
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