From: Michael Jia (mjia@xxxxxxxxx)
Date: Sat Apr 27 2002 - 23:58:58 GMT-3
Hi,
I have a general question regarding BGP and OSPF sync when router reflector
is
used. I've seen some threads discuss it before on the list.
The scenerio is like :
R1 ---- R2------ R3
All R1, R2, R3 are in same AS, R1 and R3 peer to external AS.
R2 is the route reflecter with iBGP peered to both R1 and R3.
R1 and R3 doesn't peer with each other.
OSPF is used as IGP for R1, R2 and R3.
When a eBGP route is redistritued at R1 into OSPF. The route's
BGP id is R1, its OSPF id is also R1.
iBGP syncs at R2 without question.
However, it doesn't sync at R3. Because from R3, it sees iBGP id as R2,
the Reflector's ID, but OSPF id is still R1. (Am I right? please correct me
if my logic is wrong. At a live lab, if R3 peer with R1 , the route will
sync
immediatly. In R3's routing table, it clearly has the route and the next hop
route as OSPF routes. )
The question is, how to make it sync without using "no sync" at R3?
Thanks a lot.
Michael
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