Subject: [rbridge] RBridge: a case of study

From: Radia.Perlman at sun.com ([email-masked])
Date: Tue, 30 Oct 2007 21:12:57 -0700

Thanks for pointing that out Hern. Serves me right for not reading the pseudocode part
of the spec, which got added later
for clarity.  My understanding has always been that the outer VLAN was just a way to
carry the frame across the layer 2 cloud from one RBridge to another, and would be
completely independent of the inner one.

Radia

----- Original Message -----
From: Zhi-Hern Loh <zloh at fulcrummicro.com>
Date: Tuesday, October 30, 2007 7:53 pm
Subject: Re: [rbridge] RBridge: a case of study

> 
> Anoop, I'm reading the RBridge protocol specification version 5 and 
> it seems to me that your comment is inconsistent with the spec. In 
> section, 5.2.2.3, the spec says that the outer VLAN tag of TRILL 
> data frames has the same VID as the inner tag. Is this section 
> going to be changed?
> 
> Futhermore, if we were to use different VIDs on outer VLAN tags 
> then we would need to handle the multi-destination case where one 
> would need to send a multi-destination frame per outer VID to 
> communicate with the RBs in the distribution tree which are using 
> different VIDs. Is this correct?
> 
> Thanks,
> Hern
> Fulcrum Microsystems
> 
>