[rbridge] Use of 802.1ah Encaps

Don Fedyk dwfedyk at nortel.com
Thu Dec 7 09:20:52 PST 2006


Hi Eric 

> -----Original Message-----
> From: Gray, Eric [mailto:Eric.Gray at marconi.com] 
> 
> Don,
> 
> 	And yet, someone (Ali Sajassi) asserted (in his message 
> dated Wed 12/6/2006 at 2:16 PM EST) that there were no issues 
> or additional complications with using 802.1ah in enterprises 
> for plug-and-play applicability.
> 
> 	Perhaps Ali can answer my question then.
> 
> 	But, to more directly address your earlier comments:
> 
> 	The TRILL WG has NOT come up with an encapsulation that 
> "looks like" 802.1ah - unless someone squints really hard and 
> tries to pretend that two separate Ethernet encapsulations - 
> separated by a SHIM header - are one single encapsulation.

To be fair Point to Point header that was discussed without one of the
shims was very close "functionally" (colloquial looks like) to 802.1ah.
My opinion is still we don't need several variations of headers doing
similar things. 

This was the slide that looked a lot like what I posted.  

http://www3.ietf.org/proceedings/06nov/slides/trill-1/sld13.htm

Regards,
Don 
> 
> 	That is not to say that the WG has done anything that 
> could be said to disallow the use of 802.1ah encapsulation.
> It is just not obviously consistent with all of the WG goals 
> to use _only_ 802.1ah encapsulation.
> 
> --
> Eric
> 



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