[c-nsp] 7600 updates

[MKS]

> My assumption is the following:
> - sup720/rsp720 series backplane connectivity capacity is 40Gbps
> - there is no known plan from Cisco to have bigger capacity supervisor for
> 76xx.
> - Probably not economical to develop 1 port 40GE card
> - If you need router like capabilities Cisco pushes you to go for ASR9K -
> Comparing pricewise 76xx with ES cards and ASR9K with low queue cards there
> is not much difference.
Well, stated previously in this tread the 6500 is getting a 40GbE card

>40G can be expected in 2011 (or early 2012) for ASR9K, Nexus 7000/5000, Cat 6500.

So I can't see any reason for *not* making the same card available for
the 7600, well other than pushing the ASR9K platform...