[Nsi-wg] FW: submission for NSI arch

[Guy Roberts]

Hello all,

Please find attached submission on NSI inter-network topology model from John Vollbrecht.

Guy

-----Original Message-----
From: John Vollbrecht [mailto:jrv at internet2.edu] 
Sent: 30 March 2010 17:52
To: Guy Roberts; Jerry Sobieski; Tomohiro Kudoh; Joan Antoni Garcia Espin
Cc: John Vollbrecht
Subject: submission for NSI arch

Guy and all --

This took longer than I had hoped to finish.  Please distribute it to the NSI group as a whole if you think it appropriate.  I include Joan on this because I think (hope) he will be interested in the authorization/topology issues in section 2- especially since he has volunteered to do something with the concept of "owning".

Attached is a submission for NSI protocol spec.  I am not sure how it fits with what exists now, but I think it could be in a introduction or overview section.  

A couple notes - 

 I did not use the term STP.  I tried, but it didn't seem to fit, and I still have a problem with understanding its precise definition in different circumstances.  This can be changed once we sort this out.

I tried to separate the part  that deals with multi-NSA infrastructures from the basic interface description.  I think this works, but maybe not.  

I added some description of the interaction between NSA authorization and transport topology.  I hope this is a good start and can be useful in separating discussions of topology and authorization which probably should happen in a limited way before releasing the recommendation

I included some high level description of paths.   I think (hope) this is good intro to some of the stuff Jerry has written.  

As a interesting note, in the path discussion it describes path as 
	Path == [ingress (-egress, ingress)* - egress] It is interesting to note that the term  (-egress, ingress) might be considered a Point or edge (or even a link) between networks

I am most interested in reactions and comments.

Thanks 

John



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