[rbridge] Consensus Check: C-Tags

[Eric Gray]

James,

	If the original consensus proposal were altered to remove
the possibility of saying "[S-TAGs] are not used", then you'd 
be correct (at least in essence - the document currently does
not include a single instance of the expression "S-TAG", so it
would be unnecessary to replace those instances with "C-TAG" or
"C-Tag" or "C-tag" as the case might be).  It has not yet been 
so modified, so you are incorrect...

	If the currently proposed consensus is simply to omit any 
reference to S-TAGs, then I can live with that.

--
Eric Gray
Principal Engineer
Ericsson  

> -----Original Message-----
> From: James Carlson [mailto:james.d.carlson at sun.com] 
> Sent: Tuesday, April 08, 2008 2:58 PM
> To: Eric Gray
> Cc: Dinesh G Dutt; Rbridge at postel.org
> Subject: RE: [rbridge] Consensus Check: C-Tags
> Importance: High
> 
> Eric Gray writes:
> > 	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.
> 
> And nobody will be able to stop that from happening, even if the
> RBridges specification were to say "we don't support S-tags."
> 
> There's nothing in the document or proposed for the document that will
> somehow cause S-tags to stop working on any network, so I don't see
> what the complaint is about.
> 
> If it's purely about the wording, then let's just delete every
> instance of "S-tag" from the document (to be replaced by C-tag), and
> say *NOTHING* about S-tags one way or the other.
> 
> I believe that to be exactly what the original consensus proposal
> said.  And, as best I can tell, it does nothing to prohibit anyone
> from doing whatever he wants with S-tags.
> 
> -- 
> James Carlson, Solaris Networking              
> <james.d.carlson at sun.com>
> Sun Microsystems / 35 Network Drive        71.232W   Vox +1 
> 781 442 2084
> MS UBUR02-212 / Burlington MA 01803-2757   42.496N   Fax +1 
> 781 442 1677
>