From: Ivan (ivan@iip.net)
Date: Sun Oct 22 2006 - 02:56:47 ART
Generally speaking suppress-map can't erase part of AS-path. For example:
AS-PATH: 1 2 64512 54513 3 4
Suppress map can erase entire piece of this attribute 64512 64513 3 4
But confederation can erase any part AS-Path.
On Sunday 22 October 2006 05:50, Tandou Mohamed wrote:
> Hello everyone,
> Did anyone tried the above lab from IPEXPERT. i am trying to find out if
> my answer is acceptable because it is different from their result. the lab
> said R1 in AS65511 to peer with R2 on AS 65522
> R4,R5, AND R6 IN AS 65522 to peer with R2 but not with each other
> R7 is in AS 65533 to peer with R5 's loopback0 interface
> R8 in AS 800 to peer to R7 in AS 8888
> R1 to peer to BB1 in AS 500
> Private AS numbers should not be seen by R8 or BB1
>
> I configured local-as my answer is below
>
> R1
> router bgp 65511
> no synchronization
> bgp log-neighbor-changes
> network 192.168.0.0
> network 192.168.1.0
> network 192.168.2.0
> network 192.168.3.0
> aggregate-address 192.168.0.0 255.255.252.0 suppress-map MYPREFIX
> neighbor 150.50.20.2 remote-as 65522
> neighbor 150.50.200.2 remote-as 500
> neighbor 150.50.200.2 local-as 8888 no-prepend
> neighbor 150.50.200.2 remove-private-AS
> no auto-summary
> =========================================================================
> R7
> router bgp 65533
> no synchronization
> bgp log-neighbor-changes
> neighbor 150.50.5.5 remote-as 65522
> neighbor 150.50.5.5 ebgp-multihop 4
> neighbor 150.50.5.5 update-source Loopback0
> neighbor 192.168.10.6 remote-as 800
> neighbor 192.168.10.6 local-as 8888 no-prepend
> neighbor 192.168.10.6 remove-private-AS
> no auto-summary
>
> When i checked the solution IPEXPERT has confederation configured with
> 8888 as identifier and 65522, 65511 and 65533 as peers.
>
> Thanks,
>
> TM
>
>
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-- Ivan
This archive was generated by hypermail 2.1.4 : Wed Nov 01 2006 - 07:29:06 ART