[c-nsp] cat4k, module 4548, architecture, backplane performance

[lists at hojmark.org]

> How is the communication between ports:
> 
> a) 1 and 2?
> b) 1 and 9?

Both are over the six 1G backplane connections and through the supervisor.
There is no local switching on a C4K. Unlike the C6K, the C4K blades are
more or less 'transparent'.

-A