[j-nsp] L-LSP in M-Series ?

[sthaug at nethelp.no]

> As to VLAN ids, I think they are a pretty big problem because 4K id's
> is very limiting i.e. between two LER's you can only setup 4K
> l2circuits. Moreover, as it seemed to me, in Juniper M-Series, it is
> mandatory to use the same vlan-id in both sides (VLAN translation or
> VLAN swapping is not supported).

With IQ GigE PICs you can definitely rewrite the outer VLAN tag.

> Does anybody knows if Juniper M-Series supports tagged mode (i.e.
> transporting clients VLANs through the MPLS core) ? The Juniper
> M-Series must be able to receive Q-in-Q ethernet frames (stack of
> S-VLAN and the Client's own VLAN).

We use this a lot - receive dual tagged frames, pop the outer VLAN
tag, transport the frame across an MPLS core (through a Martini
tunnel), push a different out VLAN tag on egress. Works great.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no