Subject: [rbridge] Comments on: http://www.ietf.org/internet-drafts/draft-ietf-trill-rbridge-arch-01.txt

From: sgai at nuovasystems.com (Silvano Gai)
Date: Tue, 31 Oct 2006 22:08:09 -0800

Eric,

The charter says:
"load-splitting among multiple paths"
The pragmatic way to achieve this is to implement Layer 2 ECMP

-- Silvano

> -----Original Message-----
> From: Gray, Eric [mailto:Eric.Gray at marconi.com]
> Sent: Tuesday, October 31, 2006 9:25 AM
> To: Silvano Gai
> Cc: rbridge at postel.org
> Subject: RE: [rbridge] Comments on: http://www.ietf.org/internet-
> drafts/draft-ietf-trill-rbridge-arch-01.txt
> 
> Silvano,
> 
> 	See below...
> 
> --
> Eric
> 
> -- [snip] --
> -->
> --> Sgai 2> I think we should explicitly mention layer 2 multipath.
> -->
> -- [snip] --
> -->
> 
> What do you mean by layer 2 multipath?
> 
> Do you mean "link bundling" or something else?
> 
> Are we trying now to apply ECMP to routing advertisements for layer
> two reachability?  That's a big step, particularly when we need to
> retain compatibility with existing 802.1 bridges.
> 
> I don't recall seeing anything about this in the problem statement
> document, so I don't know of any reason why we should include it in
> the architecture.
> 
> --
> Eric