[c-nsp] Cat3750 to Netgear GSM7224

[James Sneeringer]

Elmar Bins wrote:
> I'd also use a straight-through cable. GE specifies that the cable be
> automatically identified, but something _could_ nonetheless go wrong
> with a crossover here.

I did try this (though I didn't say so), using the exact same wiring that
had previously connected servers to these GLC-T modules, also with no luck.
However, as has been pointed out, if both switches are doing auto MDI-X,
they could be confusing each other, so I'll try disabling one or both.

-James