From: Dang Quang Minh (minhdq@saigonctt.com)
Date: Wed Feb 12 2003 - 16:02:22 GMT-3
You can think of using next-hop-self command on R1 and R2.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Richard Young
Sent: Thursday, February 13, 2003 1:26 AM
To: ccielab@groupstudy.com
Subject: BGP Multihoming Two IBGP Routers to Two ISPs
Hi,
I have a question about a lab I am working on. The Lab has 5 routers.
R1 and R2 are directly connected ibgp neighbors in AS1001.
R3 is connected as an EBGP neighbor to R1 in AS 300.
R4 is an EBGP neighbor to R2 in AS400.
R5 is an EBGP neighbor ro both R3 and R4 in AS 500
R5 has one loopback 200.100.1.1 /24
R5 has one ethernet 200.100.2.0 /24
After all neighbors are established, I see two bgp paths to both
networks
of R5 on R1, but I only see one path to both networks of R5 on R2.
It is like R1 is getting both networks but not forwarding them to R2.
My goal is to use BGP communities to set local preference but without
seeing both paths on both routers with the command "show ip bgp" the
route maps so not see the bgp paths and do not work.
Is there some BGP rule similar to split horizon that prevents IBGP
neighbors from sending all routes to all other fully meshed IBGP
neighbors
in the same AS?
Thanks in advance.
Richard
.
.
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