L2TPv3 over MPLS

[ariela]

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:

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddda49d

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

Any advice will be appreciated

Thanks

Andrea

[ariela]

mmm .. maybe I've found the solution:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_feature_guide09186a0080606811.html

Regards

Andrea

[Kypamop]

Hi!

Read carefully what the feature is about...

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

[ariela]

hemm ... could you explain your post?

thanks for your support

Regards

Andrea

[Harold Ritter]

Andre,

PW Redundancy will give you exactly what you need.

Hope this helps,

[Harold Ritter]

Andre,

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

Thanks,

[Harold Ritter]

Andrea,

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

Hope this helps,

[ariela]

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

Andrea

[Harold Ritter]

Andrea,

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]

correct!

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

Thanks again

Andrea