BGP Filter

R4
++
!
router bgp 22
 no synchronization
 bgp log-neighbor-changes
 neighbor 10.10.50.1 remote-as 22
 neighbor 10.10.50.1 update-source Loopback0
 neighbor 10.10.60.1 remote-as 22
 neighbor 10.10.60.1 update-source Loopback0
 neighbor 22.22.252.254 remote-as 254
 no auto-summary
!

BB2
+++
!
router bgp 254
 no synchronization
 bgp log-neighbor-changes
 network 10.10.10.0 mask 255.255.255.0
 network 20.20.20.0 mask 255.255.255.0
 neighbor 22.22.251.254 remote-as 100
 neighbor 22.22.252.4 remote-as 22
 no auto-summary
!

R4#show ip bgp
BGP table version is 6, local router ID is 10.10.40.1
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.0/24 22.22.252.254 0 0 254 i
*> 20.20.20.0/24 22.22.252.254 0 0 254 i
*>i90.90.90.0/24 10.10.30.1 0 100 0 5022 6522 100 i
* i 10.10.30.1 0 100 0 5022 6522 100 i
*>i180.180.180.0/24 10.10.30.1 0 100 0 5022 6522 100 i
* i 10.10.30.1 0 100 0 5022 6522 100 i
*>i200.200.200.0 10.10.70.1 0 100 0 i
* i 10.10.70.1 0 100 0 i

Now, I want R4 to learn only those prefixes that originated in AS 254 from
BB2.

R4
++
!
router bgp 22
 neighbor 22.22.252.254 route-map FILTER in
!
route-map FILTER permit 10
 match as-path 90
!
ip as-path access-list 90 permit ^254$
!

But, I am not getting the desired result. Humm??

-Yuri
Received on Fri May 08 2009 - 14:55:08 ART