Policy routing and TE

Unanswered Question
Aug 28th, 2007


I have two TE tunnels for the same destination and I would like to send traffic to one or the other based on it ip DSCP field.

?does someone has any link to similar configs?



I have this problem too.
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r.gagliano Wed, 08/29/2007 - 13:16

Hi, thanks for the reply. I do have some extra question.

what if I would like to split traffic between the two tunnels based on the origin/destination IP address? (if we configure the tunnel at the MPLS PE), can I set at an input interface "set next-hop interface tunnel XXX"?


swaroop.potdar Thu, 08/30/2007 - 07:02

Roque, If you are planning to test the above policy based TE selection for MPLS VPN;s then you can create additional loopbacks on the remote PE, put a static on the local PE to this remote loopback as reachable through the TE tunnel.

And then modify the incoming BGP VPN update's next hop as this remote loopback, for the VPN;s which you want this policy to be applied. So only the VPN;s where this manipulation is done would take the TE tunnel other would go the normal path.



Harold Ritter Thu, 08/30/2007 - 07:29


Instead of modifying the BGP VPN NH on the ingress PE, you can simply configure a separate NH per VRF on the egress PE using the following command:

ip vrf VRF1

bgp next-hop loopback 1

ip vrf VRF2

bgp next-hop loopback 2


swaroop.potdar Thu, 08/30/2007 - 08:08

Roque, as Harold mentioned, it can be done this way as well. Multiple ways of doing the same thing.




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