From: Daniel Garrity (ccie@xxxxxxxxxxxxxxxxx)
Date: Tue Jul 30 2002 - 16:02:32 GMT-3
Couldn't you just set the local_pref higher for that route on R2?
Something like setup a Route-map on R2 matching the network in question
and setting the local_pref to 300 or something?
Dan
-----Original Message-----
From: ying c [mailto:bf5tgh1@yahoo.com]
Sent: Tuesday, July 30, 2002 11:00 AM
To: ccielab@groupstudy.com
Subject: BGP MED alternative
Hi,
Here's one of the question that I wonder one of you
smart guys may have an answer:
R1------R2-------R3
\ | |
\-----R4-------R5
R1 is in AS100, R2 and R4 are in AS200, R1, R2, R4 are
running BGP. R2, R4, R3 and R4 are running OSPF. R2
and R4 both peer with R1 and send full ospf specific
routes to R1.
The requirement is to have R1 always use R1-R2 link as
the primary route to reach the network between R3 and
R5. Normally, we would use MED, AS-PATH or aggregate
routes to achieve this. However, here's the tricky
part: you are not allowed to use MEDs and not to
change the configuration on R1 or R4 to accomplish
this.
I did it by using a lower metric number when I
redistribute ospf into bgp in R3, but I think this
pretty much violated "not to use MEDs" rule. Is there
any other way to solve it?
Thanks,
Chang
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