L2TPv3 support on 3750x

[spfister336]

Does the 3750x switch support L2TPv3? The goal is to support an RSPAN session between sites over AT&T Opt-E-MAN. I know ERSPAN is a popular suggestion for this situation, but nothing at the remote site supports ERSPAN, and I don't think that's going to be changing any time soon.

[Giuseppe Larosa]

Hello Spfister336,

you need an ISR router to support L2TPv3.

A C3750-X does not support it.

I'm sorry to give you bad news

Hope to help

Giuseppe

[spfister336]

Thank you... so basically, to get L2TPv3 support, we really need a router, as opposed to a L3 switch, is that correct?

[Giuseppe Larosa]

Hello Spfister336,

yes you need a router with an appropriate license to run L2TPv3 you can deploy two routers one at central site and one at remote site in order to create a L2TPv3 tunnel between them.

The access interface of the router on the remote site has to be connected to the destination port of the local SPAN session that you configure on remote branch switch.

At the central site the access interface related to L2TPV3 can be connected to the network analyzer you have in the central site.

Be aware of traffic volumes and performance limits of the routers that cannot support a GE port at full speed.

Hope to help

Giuseppe