Re: MPLS VPN HARIPIN CONCEPT

I believe what you are looking for is referred to as VRF route leaking and I'm surprised that cisco would recommend this solution. Typically hairpinning is used when you see packets coming in a single interface only to be routed back out of the same interface.

Check out this article by some guy name Marko Milivojevic (lol).
http://blog.ipexpert.com/2010/12/01/vrf-route-leaking/

Regards,
 Joe Sanchez

On Jul 5, 2012, at 9:07 PM, Saravanan Ponnaiah <saravanan.ponnaiah8_at_gmail.com> wrote:

> Dear Expert,
>
> I having a doubt on hairpin concept, I have mentioned the configuration
> solution by Cisco team. Kindly confirm how the hairpin works ? there is no
> route exchange between two vrf , then how it select the path from one vrf
> to other vrf. Pls clarify me
>
> vrf definition Test1
> rd 65535:101
> !
> address-family ipv4
> route-target export 65535:101
> route-target import 65535:101
> exit-address-family
> !
> !
> interface TenGigabitEthernet4/3
> description *** Hair-pinning ***
> vrf forwarding Test1
> ip address 10.174.18.194 255.255.255.252
> no ip redirects
> no ip unreachables
> no ip proxy-arp
>
>
> rd 65535:102
> !
> address-family ipv4
> route-target export 65535:102
> route-target import 65535:102
> exit-address-family
> !
> !
> interface TenGigabitEthernet4/2
> description *** Hair-pinning ***
> vrf forwarding Test2
> mac-address 503d.e5ff.5201
> ip address 10.174.18.193 255.255.255.252
> no ip redirects
> no ip unreachables
> no ip proxy-arp
>
> With Regards
>
> P.Saravanan
>
>
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Received on Wed Jul 11 2012 - 06:55:26 ART