[j-nsp] Triple-stacked VLANs

[sthaug at nethelp.no]

> Do Juniper routers support triple stacked VLAN's? QinQinQ if you
> prefer.

*Terminating* triple stacked VLANs does not work (e.g. having a
triple stacked VLAN subinterface with an IP address).

Juniper routers with IQ2 GigE PICs can do lots of interesting
stuff with two VLAN tags, including pushing/popping two tags. So
basically you could have a box which is aware of the outer two
VLAN tags but not the inner one.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no