Re: [RRG] Separation vs. Elimination

[Steven Blake <slblake@petri-meat.com>]

On Sat, 2008-09-20 at 23:10 -0600, He Yan wrote:

> On Sep 20, 2008, at 8:42 PM, Steven Blake wrote:
>
> > The statement "A common requirement of all the separation solutions  
> > is a mapping system that associate an edge prefix with the corresponding
> >                                   ^s
> > transit addresses." on page 2 is false.  GSE, for instance, requires  
> > no such mapping.
>
> In GSE, isn't there a similar mapping between ESD and RG?
> Correct me if  I am wrong.

In GSE there is no notion of globally unique edge site prefixes.
When a host resolves an address for another host in an external site and
sends a packet to it, that packet has (one of) the RG(s) of that
external site in it's destination address field.

GSE is just a very clever form of NAT.  NAT in general is a separation
scheme that does not require the mapping you describe above.


Regards,

// Steve


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