[rbridge] VLAN registration

[Eastlake III Donald-LDE008]

Hi Anoop,

So what should an Rbridge which does not support MVRP do when it
receives an MVRP frame? (I assume you are not just supporting the older
GVRP over MVRP so what you are really saying is that an Rbridge does not
need to provide any real support for dynamic VLAN registration.)

Under such circumstances, there are various possibilities:

Just discarding the frame doesn't seem very friendly and certainly won't
work if you have bridges in the path that have dynamic VLAN
configuration.

Distributing as a non-IP-derived multicast, which is what the -06 draft
provided, seems pretty flakey. It might work sometimes, depending on
exactly port configurations, but would commonly fail because the VLAN
registration frame wouldn't get to where it was needed or, if it did, it
would be VLAN tagged in violation of 802.1Q.

You could also special case it as a non-VLAN constrained frame which is
never VLAN-tagged when decapsulated...

Thanks,
Donald

-----Original Message-----
From: Anoop Ghanwani [mailto:aghanwan at brocade.com] 
Sent: Thursday, March 20, 2008 10:54 AM
To: Silvano Gai; Dinesh G Dutt; Eastlake III Donald-LDE008
Cc: Developing a hybrid router/bridge.; Radia Perlman
Subject: RE: [rbridge] VLAN registration

While I'm not sure I agree with the "ZERO deployment"
statement, I think it's OK to mention MVRP support as MAY.

Anoop