IPv6 policy and Supernational-LIRs
Havard Eidnes he at uninett.no
Wed May 29 18:03:37 CEST 2002
> To me, it would make sense to allocate a /3x to each and every one > who has an AS#, and requests ipv6-space, then we would NOT have any > problem like the above or with 'multihoming' either. It is not like > the adresses would be used-up with this scenario.. I agree. With the current to-be-implemented routing policy, having an AS# is however not sufficient grounds for getting your own "portable" IPv6 address space. At least not the way I read it. While it is true that the addresses would not be used up anytime soon with this alternative address allocation scheme, I have understood the fear to be that the routing table space would be consumed too quickly in this scenario. Apparently, in some regions getting the LIR status, multiple service provider connections, and your own AS# is considered to be "too easy" or "too cheap", so the practice would proliferate, and routing table explosion would be the result. However, as far as I know, none of the "alternative" ways to do multihoming in the IPv6 world provide a service with similar characteristics to the one we currently have in IPv4. In a way, this is a reflection of the fact that routing in IPv6 is just "more of the same" compared to IPv4, and that the routing and particularly multihoming issues from IPv4 have not been solved in IPv6. The current IPv6 address allocation policy nevertheless appears to try to implement routing aggregation through the RIR IPv6 allocation policy, in that only the "big guys" can get an allocation from their RIR. A side effect of this is that it will take away smaller ISPs ability to set their own routing policy, because they would need to go to their upstream(s) to get IPv6 addresses, and it seems likely that strict filtering of routing announcements on LIR allocation boundaries will be implemented. Regards, - Håvard
[ lir-wg Archives ]