From: lg01 (lg01@myway.com)
Date: Tue Apr 22 2003 - 10:28:36 GMT-3
Hello group,
If I had...
RTA RTD
AS 1500 AS 2000
| |
| (normal EBGP) | (normal EBGP)
| |
********** **************
RTB *-----* RTC *
sub-as 8 * * sub-AS 200 *
********** **************
Now, both RTB & RTC are part of a big BGP confederation (confederation ID is 20)
Here comes the confusion:-
I have 4 BGP routes being injected by BGP network command by RTC. If I want both RTA & RTB to be able to see these 4 routes, but I also want to ensure that neither RTA nor RTD will use AS 20 for transit traffic, which means I need to make sure that only those 4 routes within AS 20 should be advertised. What AS-PATH access-list should I put on RTB?
I have tried...
- ip as-path access-list 2 permit ^$
- ip as-path access-list 2 permit ^200$
- ip as-path access-list 2 permit _200$
- ip as-path access-list 2 permit _8$
(of course, I put it on the neighbor out statment as well, but all of them just
blocks all routes going out to RTA, any ideas?
Thanks.
H.
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