[rbridge] Consensus Check: C-Tags

[Eric Gray]

James,

	See Dinesh' point (as well as my own point on the 
context in which S-TAGs are defined); S-TAGs may be used
without I-TAGs.

	A somewhat larger point is that even if I-TAGs are
used, intermediate bridges do not see them.  I believe 
S-TAGs are deliberately defined in such a way as to make
it quite easy to have basic Q-Bridges forward frames with
S-TAGs instead of C-TAGs.

--
Eric Gray
Principal Engineer
Ericsson  

> -----Original Message-----
> From: James Carlson [mailto:james.d.carlson at sun.com] 
> Sent: Tuesday, April 08, 2008 2:04 PM
> To: Eric Gray
> Cc: Dinesh G Dutt; Rbridge at postel.org
> Subject: RE: [rbridge] Consensus Check: C-Tags
> Importance: High
> 
> Eric Gray writes:
> > James,
> > 
> > 	As a not-so-subtle distinction, I-TAGs are used to identify
> > service instances - not S-TAGs.
> 
> Right.  We won't have support for I-tags, so what are we doing
> specifying any S-tag behavior?
> 
> I fail to see the usefulness of that.
> 
> -- 
> James Carlson, Solaris Networking              
> <james.d.carlson at sun.com>
> Sun Microsystems / 35 Network Drive        71.232W   Vox +1 
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>