L2TPv3 over MPLS

Unanswered Question
Apr 4th, 2007

Hi folks,

I've to implement two L2TPv3 tunnels over MPLS backbone, primary and backup. I'm thinking about L2 pseudowires, but my question is: with 2 pseudowires, how could I do, if possible, to create a primary and a backup tunnel? Something like FRR?

I've found in a recent post a configuration for two tunnels:


but no idea about how to implement a fault tolerance solution.

Any advice will be appreciated



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
Kypamop Fri, 04/06/2007 - 00:31


Read carefully what the feature is about...

Usually then you talk about PW redundancy it means a bit different functionality.

ariela Mon, 04/16/2007 - 22:01

hemm ... could you explain your post?

thanks for your support



Harold Ritter Tue, 04/17/2007 - 09:42


I forgot to ask. Any reason to use L2TPv3 rather MPLS since you are mentioning that the backbone is MPLS?


Harold Ritter Tue, 04/17/2007 - 11:00


The reason I'm asking is that PW redundancy is currently not supported for L2TPv3 encapsulation.

Hope this helps,

ariela Tue, 04/17/2007 - 15:52

well, I've to transport through MPLS cloud an L2TPv3 user authentication. The solution is to have a transport as transparent as possible, is it?

Hope this was clear enough

Thanks for your support


Harold Ritter Tue, 04/17/2007 - 16:43


I think I understand where my confusion comes from. You are using L2TPv3 in a context of VPDN rather than using it as a transport a pseudowire, right?

In this case the L2TPv3 session could just be routed as IP traffic through the core. Or if you want to use pseudowires through the core, it would certainly be possible to use MPLS for this purpose.

Let me know if that helps,

ariela Wed, 04/18/2007 - 07:39


I'll try to use a PW though the cose, using mpls and redundancy. Then I let you know.

Thanks again



This Discussion