[rbridge] Summary of "critical bits" issues

[Caitlin Bestler]

Thanks for a very useful summary. Comments in-line.

> -----Original Message-----
> From: rbridge-bounces at postel.org [mailto:rbridge-bounces at postel.org]
On
> Behalf Of Joe Touch
> Sent: Thursday, December 13, 2007 10:38 AM
> To: rbridge at postel.org
> Subject: [rbridge] Summary of "critical bits" issues
> 
> IMO, here are the important elements:
> 
> 1. option order
> 	if you care about short-circuit option processing,
> 	which is reasonable, then we should put HBH options
> 	before E2E ones, and required options (i.e., discard
> 	if not supported) before voluntary options (i.e.,
> 	pass if not supported)
> 
> 2. option groups
> 
> 	Hop-by-hop
> 		examined at all rbridges
> 
> 	End-to-end
> 		examined ONLY at ingress and egress rbridges
> 

A Devil's  Advocate question here: Is this the *only* option required?

That is, how severe a limitation would it be if all options were
mandatory,
but end-to-end options were ignored by all intermediate rbridges?

Wouldn't that be sufficient for the strawman options that have been
discussed?