[c-nsp] Same MAC addresses from two ports on different VLAN

[sthaug at nethelp.no]

> > I can think of so many possible problems with this that I want to see
> > if this is common design of switches or just Extreme and I need to
> > start using different L2 switches.
> 
> "just Extreme".  But it wouldn't surprise me to see similar engineering
> shortcuts in 3com and such, too.

We have a significant number of Extreme switches, and have never seen
this problem. All our tests indicate that the Extreme switches we use
have per-VLAN MAC tables.

It would be useful to know more specific details about hardware and
software from the original poster.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no