[rbridge] Final outcome of outer VLAN tags on RBridge-RBridge packets?

[Radia Perlman]

I'm not sure I understood the final consensus on what we should do for 
outer VLAN tags on inter-RBridge packets.

The possibilities I think the consensus might have been are:

a) only use VLAN 1, explicit tag, no configuration possible.
b) default is VLAN 1, explicit tag, configuration is possible to change 
sending with VLAN tag(s)
something other than 1. If this is what was decided, I don't believe 
we've worked out the design
details. I'd assume this would mean RBridges should be willing to 
receive packets from other
RBridges regardless of outer VLAN tag. Would we then mark in the Hellos 
what VLAN tag(s)
you've heard from what other RBridges with? What do we do with multicast 
if there isn't a single
VLAN tag that seems to work to send to everyone? Would we allow 
configuration to
send on a set of VLAN tags, or just on one at a time (and we allow 
configuration to say
which one it is)?

Certainly a) is simpler. If the consensus was b), we'd better work out 
the details.

Radia