route-map and as-path confusion

Hello all,

I have a problem with a route-map. Here is the scenario:

R1(AS1)----R2(AS2)----R3(AS3)----R4(AS4)----R5(AS5)----R6(AS6)

Routers advertise networks: R1: 1.0.0.0, R2: 2.0.0.0 etc...

On R1 I want to filter routes that traversed AS3 *AND* originated in AS5. I
want to use route-map to do this.

Step 1. Define as-path access list:
# ip as-path access-list 3 permit _3_
# ip as-path access-list 5 permit _5$

Step 2. Match as-path in route map. This route map is meant to match both
as-path access lists:
# route-map TST deny 10
# match as-path 3
# match as-path 5
# route-map TST permit 99

Step 3. Apply route-map to neighbor in AS2:
# router bgp 1
# neighbor 10.1.12.2 route-map TST in

At this point I should see on R1 all prefixs with xception of 5.0.0.0

"sh ip bgp" shows now:

*> 1.0.0.0 0.0.0.0 0 32768 i
*> 2.0.0.0 10.1.12.2 0 0 2 i

It looks that only as-path 3 was applied. Why ?
My understanding is that if multiple match statement are present within
single route-map instance, thy ALL must match. In this case only 5.0.0.0
matches both access-lists and only 5.0.0.0 should be removed from R1.

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Received on Tue Nov 23 2010 - 13:53:20 ART