[nsp] Catalyst 3550-12T

[atticus at satanic.org]

> IOS Only.  If you want CATOS, you are probably looking at the 4xxx line of
> switches or the 65xx line.  I'd avoid the 5k line.

Keep in mind that CatOS is pretty rare on the 4000's now. The three
current supervisors (II+, IV, and V) are all IOS.

For fixed-configurations, the "Catalyst 2900" series (actual 2900, not
2950, etc) are the only CatOS holdouts, as they're based around the 4000
SupI.

Have a few of the 3550-12T and 3550-48's and am somewhat satisfied with
them -- they're fantastic when looking at overall price/performance, but
make sure that they meet your functional needs, as they're very limited
feature-wise.