[c-nsp] Linerate 100mb on 7204 NPE-225?

[Kevin Graham]

> Then again, if you're indeed going to add an external L3 switch to a
> 4000 chassis, why not replace the SUP in the first place? Or, if that
> is not possible (SupIV in 4003 maybe a no-no)

Yep, would've recommened a IV or II+ right off, but the 4003 chassis
/only/ supports SupI.

>  a stack of 3750s might well replace the 4003 altogether.

This direction makes alot of sense -- bring in the first 3750 to do
the L3 work required and use it as a building block for one or two
more in the future to deprecate the 4000.