[c-nsp] SFM and Sup720 and 7600

[Asbjorn Hojmark - Lists]

> All modules can use the backbplane bus (as far as I
> understand).

Some of the newer modules have only fabric connections (67xx,
SIP-600) and are therefore only supported with chassis with 
fabric connections (i.e. not the old 7603) and not with the
Sup32. Since those connections are 20G (each), they're also not
supported with the SFM, which has 8G fabric connections.

The only older fabric-only module I can think of is the 6816.

-A