Re: GSE IDs [Re: IETF multihoming powder: just add IPv6 and stir]

[David Conrad <david.conrad@nominum.com>]

Noel,

I agree.

However, I have been told that ensuring the global uniqueness of the 
last 80 bits is non-trivial because people like the stateless 
auto-configuration stuff that has been defined for v6.

One way of addressing this particular concern is to say the top 48 bits 
are mutable from one globally unique value (a "site identifier") to 
another globally unique value (an "aggregation locator") via some 
mapping function at both exit from the source site as well as entry at 
the destination site.

In this case, the identity portion of the name (the first 48 bits 
within a site) is globally unique by itself.

Rgds,
-drc

On Monday, May 5, 2003, at 01:47  PM, J. Noel Chiappa wrote:

> > From: David Conrad <david.conrad@nominum.com>
> > All the GSE-like solutions discussed to date that I am aware of have
> > assumed the first 48 bits (the locator) are globally unique. ... the
> > last 80 bits may or may not be unique depending on what you want to 
> > do.
> There's not much point to separating location and identity if the 
> portion of
> the name which is the identity is not globally unique *by itself*.
>
> 	Noel