VPLS Interoperability

[sultan-shaikh]

I have the following setup:

<Juniper T320>--<GSR12K>--<JuniperM40e>--<JuniperM40>

I want to configure a VPLS across this, now Juniper uses BGP for signalling while Cisco uses LDP, as far as I know, is this true and if yes how can i implement a VPLS across this setup.

Cheers,

Sultan

[adityakaul]

Juniper supports draft-kompella-ppvpn-vpls-01 which uses MP-BGP as the signalling protocol.

Cisco/Alcatel/Riverstone/Extreme support draft-ietf-ppvpn-vpls-ldp-01 which uses LDP as the signalling protocol.

As of now I dont think you can Interop Vpls between the two.

[adityakaul]

Furthermore, currently cisco supports VPLS only on 7600.

I have heard that vpls will be supported on GSR/3750-Metro in future.

Rgds

Aditya

[Harold Ritter]

Looking at the topology, it seems like the GSR is not an end point. Am I correct? If so, the VPLS is transparent to the GSR.

In the case you want the GSR to be an end point, VPLS is not interoperable between CSCO and JNPR but you can do point to point between the two using Martini signalling.

Hope this helps,

[sultan-shaikh]

hritter you are right, the GSR12K is not on the edge, it will be only in the core. So that implies that VPLS should be interoperable, transparently, but as Aditya pointed out that VPLS is suported only on 7600, so will that lead to some operational issues?

Thanks a lot in advance guys !!

Cheers

Sultan

[Harold Ritter]

Given that the GSR is not a PE router for the VPLS, it doesn't need to support VPLS. The GSR is not involved in the VPLS control plane. At the forwarding plane level it only sees MPLS frames and forwards them properly. So given your scenario, it should work.

Hope this helps,

[adityakaul]

Adding to the above,Pls make sure you are running Ldp on the interfaces facing Juniper as Cisco by default enables TDP.

Rgds

Aditya

mpls label protocol ldp(global)

Will enable ldp as the default protocol.