[c-nsp] 7600 SIP/SPA with MPLS / AToM

[David Freedman]

Jason Greenberg wrote:
> Good Day,
> 
> I understand that in order to run AToM for VPLS in my core, my 7600s
> will require SIP-600 blades for core facing links (correct me if I'm
> wrong).
> 
> But I have an additional question as well.  If one of these SPA
> interfaces is a dot1q Trunk, can MPLS be enabled on a VLAN SVI? or dot1q
> subinterface somehow?  
> 
> Further, I'm not sure if the SIP/SPA's allow for regular "router" style
> subinterfacing ( Gig4/0.3 for dot1q, for example ), or if we're still
> restricted to use the standard 6500 style "interface Vlan 3" per-vlan
> config mode.


SIP/SPA is effectively a router living inside your 7600.
As an upshot of this, you are forced to use a seperate (not globally 
consumed) VLAN tag space, which can only be configured as subinterfaces 
on the SPA (i.e no SVI support for the SPA itself)


Dave.




> 
> 
> Thanks,
> 
> Jay
> 
> 
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