[c-nsp] 6500/7600 QinQ & Tunneling

[Peter Rathlev]

On Tue, 2008-03-11 at 00:01 +0000, tt tt wrote:
> Having run out of steam on the 7206xr + NPE-G1/G2 platform and an
>  increasing requirement for Gig ports we are looking at upgrading to
>  7600'/RSP720-3CXL or SUP720-3BXL. We don't have any immediate
>  requirements for MPLS so I would like to avoid upgrading to a MPLS
>  core (and additional license $$) if possible in the short term.
> 
> I have searched both list archives and the various Cisco data sheets
>  but am unclear on the following:
> 
> - Do the 67xx line cards support QinQ or do we have to use the
>  vastlymore expensive SPA / ES20's? If the 67xx cards do support QinQ
>  are weable to rate limit on each sub interface?

No, LAN cards do not support QinQ, as in "encapsulation dot1q X
second-dot1q Y". Most LAN cards support dot1q-tunneling though, but
that's probably not what you're looking for.

> - Beyond GRE are any other tunneling features supported such as L2PT
>  without deploying MPLS? We currently use L2TPv3 which is sadly lacking
>  from the 6500/7600.

Is that L2PT as in "Layer 2 Protocol Tunnelling" or did you mean L2TP in
both places? Sup720/RSP720 does not support L2TPv3 (not in hardware at
least = don't do it), so with them you're stuck with MPLS. You can add
e.g. a SIP-400 and get L2TPv4 though, but then we're talking more
$/£/€/¥.

Regards,
Peter