Mark, >>> Mark Smith wrote >>> Obviously my last two models don't really fit the idea that >>> site-local addressing is to cover a single geographical site. >> Richard Draves wrote: >> Why do you think that site-local addressing is tied to >> geography in any way?
> A few reasons : > 1) because of the name ?! the word "site" in common English > has geographical connotations. > 2) the explanation in the Scoped Addressing Architecture > RFCs / drafts : draft-ietf-ipngwg-scoping-arch-04.txt > [snip] While I fully agree with your reading of the RFC and the English connotation of the word "site", it appears to be an unwritten convention that says that a site is a /48. This leads to some semantic confusion in the case of organizations that get a /48 and are spanned over several physical locations that could be separated by hundreds or thousands of miles. When discussing multihoming topics, we refer to a multihomed multi-site organization as an organization that needs to announce different prefixes for each location (which kinda conflicts with the "site = /48" rule for such organizations that get a single /48) opposed to a multihomed single-site organization. In the old days where the usable space for site-locals was a /48, I would have agreed that site-locals would need to include some notion of geography for large organizations that requires more than a /48. However, since today the usable space for site-locals is /10, it is likely that some organizations, even if their address space is multiple /48s, will configure only one site using site-local addresses. I am not lobbying for any definition of "site" (although I would not mind a more precise definition) but it appears to me that the common use for the word has slipped from the way it is written in the part of the RFC you quoted closer to the administrative boundary of an organization. Michel -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
