[nsp] ARP filtering

[Marko Milivojevic]

> IDB limits have been raised to amazing numbers in recent IOSes, so that's
> usually not a problem either.  (Spanning tree instances might well be,
> though).

    Quite frankly, I don't see how this should be a concern. Vast majority
of co-location customers would require only one port on your switch (flame >
/dev/null :-) ). Make that L3 port and you're safe with number of IDB, VLAN
and STP limits :-). Of course, this approach assumes L3 switch, but they are
almost dirt cheap nowadays.

Marko.