> For interest: obviously the phone needs to know the tag number. LLDP-MED
> is the "normal" way of signalling this, or CDP on all-Cisco networks.
>
> Responding to the OP, whether you can do this and the syntax to use
> depends on your switch. For example with 3Com 4400 and (I think) Extreme
> x450 you do this:
>
>   Tunnel-Type = VLAN,
>   Tunnel-Medium-Type = IEEE-802,
>   Tunnel-Private-Group-id = "20 30t"
>
> ...to put vlan 20 untagged and 30 tagged.

I heard that cisco doesn't "do" lldp-med yet.
Thanks for the info i'll try this and let you know.
I'm currently running an all procurve network with 3500yl switches.
I am told that with newest firmware this should be possible.
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