[c-nsp] Experiences with l2tpv3/xconnect?

[Adrian Chadd]

On Fri, Nov 06, 2009, Gert Doering wrote:
> Hi,
> 
> On Fri, Nov 06, 2009 at 10:26:32AM +0800, Adrian Chadd wrote:
> > Just out of morbid curiousity - so will the router terminating L2TPv3 actually
> > fragment and reassemble L2TPv3 frames as needed, or is it hoping another
> > upstream router will fragment as needed?
> 
> Well, as always this depends on "who is hitting the MTU wall" - if the
> encapsulating router already knows "can't send this packet", it will 
> fragment itself, otherwise, a router on the path needs to do so.
> 
> Reassembly is always done on the receiving L2TPv3 router, and is expensive.

Absolutely. I just think I'm going to have to bite that.

I'll do up some basic testing and report back numbers once it is deployed.

Thanks,



Adrian