[85920] in North American Network Operators' Group
Re: Scalability issues in the Internet routing system
daemon@ATHENA.MIT.EDU (Paul Jakma)
Wed Oct 19 07:24:52 2005
Date: Wed, 19 Oct 2005 12:28:01 +0100 (IST)
From: Paul Jakma <paul@clubi.ie>
To: Andre Oppermann <nanog-list@nrg4u.com>
Cc: Tony Li <tony.li@tony.li>, nanog@nanog.org
In-Reply-To: <43562A07.3040901@nrg4u.com>
Mail-Copies-To: paul@hibernia.jakma.org
Mail-Followup-To: paul@hibernia.jakma.org
Errors-To: owner-nanog@merit.edu
On Wed, 19 Oct 2005, Andre Oppermann wrote:
> the rationale behind MPLS. However here we need something that
> administratively and politically works inter-AS like prefix+BGP
> today. Maybe the new 32bit AS number may serve as such a perfect
> match routing identifier.
Interesting idea.
> That'd make up to 4 billion possible entries in the DFZ routing
> system. Or about 16k at todays size of the DFZ. One AS == one
> routing policy.
That means though that we still need a way for people without an ASN
to multi-home. Because clearly the number of ASNs is quite restricted
compared to the number of IPv6 prefixes. So:
- we need to change that 4-byte AS draft to (4+X)-byte ASNs
sharpish, X should be 4 probably (good luck with that). And change
all IPv6 stacks in routers (and hosts, but that's easier).
OR
- we also need $AREA allocated IPs (which obviously operators would
love to work on implementing)
OR
- we still will have some end-host "probe with every source address"
and "change every stack" solution, one which adds a sort of
supra-net to the internet which is only visible to end-hosts with
this stack.
Seems to me at least, pre-coffee.
regards,
--
Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
Fortune:
ether leak
