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