[c-nsp] optics

[Ross Halliday]

> And not all optics will be properly identified. Cisco does a poor job of
> interoperability with its own optics as well, so don't expect it to work
> right.

+1 to this, I've got some actual bonafide Cisco SFPs, either GLC-SX-MM or GLC-LH-SM, that act *just* like those nasty awful evil aftermarket ones we're supposed to avoid due to alleged quality issues...

Ross