From: MOLINA, MARTIN J (PBI) (mm1343@sbc.com)
Date: Thu Dec 05 2002 - 19:23:40 GMT-3
I'm pretty sure you can only prepend to neighbors in another AS dude ! R2 to
R5 would work but R5 to R2 won't since they are both in the same AS.
-----Original Message-----
From: Michael Todd [mailto:michaeldtodd@comcast.net]
Sent: Thursday, December 05, 2002 1:46 PM
To: ccielab@groupstudy.com
Subject: Weird AS prepend problem
I'm trying to prepend AS numbers to outgoing updates on a router that is
originating the routes. When I look at the neighboring router, the AS
numbers weren't added. If, from a router not originating the routes, I add
the same route-map to an outgoing neighbor, the AS numbers are prepended.
I'm using the exact same route-map and access-lists on both routers. Should
I be able to prepend an AS path to an IGP neighbor if I am originating the
routes? Any ideas?
Visual:
R5 AS 200------------------R2 AS 200--------------R1 AS 8888
R5 originates 172.32.1.0 from a loopback using a network statement. Outgoing
route-map to R2 matches 172.32.1.0 and sets as-path prepend to 500 and 501.
Clear IP BGP *, then look in R2, no dice. See the route, but not from 500,
501. If I put the same route-map on the R2 for R1 neighbor, R1 sees 500 501.
I'm tearing my hair out! I've triple-checked the configs. I'm running
12.1(5)T9 on all routers. Nothing else special happening with BGP.
Thanks in advance!
Michael Todd
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