Re: [ipv6-wg@localhost] Re: [lir-wg] IXP networks routing

[Pekka Savola <]

Check out:

http://www.ietf.org/internet-drafts/draft-savola-multi6-asn-pi-00.txt

the drawback seems obvious: at least I don't want to encourage anything 
that would hasten the move to 32-bit AS numbers, and definitely don't want 
to change the problem of end-site multihoming to AS-number exhaustion 
problem.

On Wed, 5 Mar 2003, Måns Nilsson wrote:
> --On Tuesday, March 04, 2003 16:14:57 +0100 Poul-Henning Kamp
> phk@localhost wrote:
> 
> > I'm mainly talking about the lack of a feasible way for end-customers
> > to get working multi-homing.  This ties directly into the "PI" space
> > question.
> 
> Multihoming today depends on the possession of an AS number. I see no
> alternative to that prerequisite.
> 
> Size of current v4 routing table: roughly 120000 entries
> Number of ASen visible		: roughly 15000
> 
> So, if we simply give every AS number holder currently present in the v4
> table a /32 or so, with STRICT instructions to forget getting another
> prefix until half that prefix is pingable, we attain several things:
> 
> * This makes the PI/PA distinction moot, or rather, we have PI only. 
>   Perhaps the mootness is temporary, but I hope not. It might be 
>   replaced with AA -- AS Allocated, ie "these addresses belong to AS1653, 
>   and cannot be placed under any other AS". 
> 
> * The "v6 for services" problem will disappear. End of this discussion. 
> 
> * The routing table will shrink to 12.5% of its present size. 
> 
> * We will have a minor chunk of v6 space used, and all present users of 
>   v4 will be able to migrate without lack of address space. 
> 
> * If the number of ASen (with one /32 per AS) visible in the v6 table
>   increase 100% compared to todays v4 figures, the table will still be only 
>   25% of today. 
> 
> * Everybody will hunt me with both sharp and blunt objects for being 
>   a filthy pragmatic person with blasphemous opinions. 
> 
> Now, please tell me why this does not work. Purity reasons will have no
> effect, for I am too shortsighted. 
> 

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings