Excerpts from Robin Whittle on Wed, Mar 12, 2008 11:44:00PM +1100: > I note that APT places the ITR and ETR functions (typically in the > same device) at a very specific location: the Provider Edge routers > of ISPs. This contrasts with what Dino wrote a few days ago - that > with LISP the ITR and ETR functions would be in Customer Edge > routers: > > http://psg.com/lists/rrg/2008/msg00687.html > > For Loc/ID purposes (there are several other reasons to use > LISP than what is intended by this venue), we want to strongly > suggest that xTRs be placed on CE (CPE) routers. We think that > is the best balance of tradeoffs. > > The Provider Edge location makes more sense to me. With Ivip, they > can be placed anywhere, but the Provider Edge would be a good place.
In order for a site to be able to coordinate behavior of its xTRs, to any degree and in any way it chooses, it is good to have them under the site's direct control. I don't believe we can predict or should control how a site's xTRs work together. I hope to be surprised at sites' innovation. So it's good if we take that out of the realm of inter-provider cooperation and put it under the site's control. -- to unsubscribe send a message to [EMAIL PROTECTED] with the word 'unsubscribe' in a single line as the message text body. archive: <http://psg.com/lists/rrg/> & ftp://psg.com/pub/lists/rrg
