Specific VPNs through TE Tunnel

[olorunloba]

I want to setup a Traffic Engineering tunnel across two PEs. The challenge is that I wish that some specific VPN use this tunnel, while other VPN use another route. In case of failure though, the traffic should failover. How do I specify which VPN can or cannot use the TE Tunnel?

[Harold Ritter · Accepted solution]

You could use the "bgp next-hop" command under a specific "ip vrf " to specify what next hop is used when advertising prefixes belonging to that VRF into VPNv4. By using a different NH you could forward traffic for this VRF via a specific tunnel. If the tunnel ever goes down, traffic to that NH would then be forwarded using the LSP built via LDP.

Let me know if I answered your question,

[olorunloba]

Oops, sorry Harold, I never mentioned that this solved my problem. I noticed though that only loopbacks can be used as the BGP next hops. Any workaround this.

[Harold Ritter]

Not really. What is the issue with using a loopback interface as the BGP next-hop.

Thanks,

[olorunloba]

No issue actually, just thinking of scenarios.

If I have multiple TEs, and I want a differentiated service such that different traffic types can use different tunnel. And this in an MPLS VPN scenario?

Do you have any ideas?