[nsp] more than 2 sites with Q-in-Q

[sthaug at nethelp.no]

> > your core. For three sites with 3 VLAN's this is not much of a problem,
> > but build a large number of sites on Q-in-Q where the inner VLAN's are
> > not identically shared, and you will have a lot of useless traffic on
> > your links...
> 
> Noteworthy is that even with q-in-q you still carry all your customers 
> different MAC adresses, so pretty soon you're going to run into that 
> limitation of the 3550.

So the question is - do you run out of VLANs first, or MAC addresses? :-)

I'm really looking forward to a switch generation which can handle a
decent number of MAC addresses and simultaneous VLANs *and* at least
two levels of 0x8100 VLAN tags.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no