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

[tesinska-predstoleti at yahoo.com]

--- Mikael Abrahamsson <swmike at swm.pp.se> wrote:
> > 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.

   one thing to add to this subject - using command "sdm prefer vlan"
you can increase MAC addresses number to 12K.

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550cr/cli2.htm#2752234

regards



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Andrzej Gab