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Re: MORE..BGP - Community attribute posted 11/16/2003
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If you want to tag a route to be adv only within the confederation try using
the no-export, the local-as means just that adv only within the local AS not
confederation.

----- Original Message ----- 
From: "Silvio Nunes" <silvio_98@xxxxxxxxxxx>
To: <ccielab@xxxxxxxxxxxxxx>
Sent: Sunday, November 16, 2003 8:24 AM
Subject: MORE..BGP - Community attribute


> Regarding LOCAL-AS attribute, I4d like to confirm:
>
> A route with a LOCAL_AS attribute can be advertised to peers in other
> subautonomous systems within a confederation, but I4m trying and it is not
> working... the route cannot be advertised to another subautonomous
systems..
>
> AS3 (R3)......[ AS10 (subAS5 -R5)----- (subAS5 - R2) ........ (subAS6 -
R6)]
> |
> |
> 222.222.222.0
>
> In this example, R2 (in the same subAS) has 222.222.222.0.  R6 (in another
> subAS) cannot get the same route:
>
> (R5)
> router bgp 5
> bgp router-id 5.5.5.5
> bgp cluster-id 3368601605
> bgp log-neighbor-changes
> bgp confederation identifier 10
> bgp confederation peers 6
> neighbor 2.2.2.2 remote-as 5
> neighbor 2.2.2.2 ebgp-multihop 5
> neighbor 2.2.2.2 update-source Loopback0
> neighbor 2.2.2.2 send-community
> neighbor 2.2.2.2 route-map MODCOMMUNITY out
> neighbor 3.3.3.3 remote-as 3
> neighbor 3.3.3.3 ebgp-multihop 5
> neighbor 3.3.3.3 update-source Loopback0
>
> access-list 33 permit 222.222.222.0 0.0.0.255
>
> route-map MODCOMMUNITY permit 10
> match ip address 33
> set community local-as
> !
>
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