Hi Tony, Thanks for clarifying the assumptions on which the current poll question is based:
> |Still, what kind of site does the question refer to? > | > | A site with a single PA IP address such as my DSL service? > | > | A large PA site - hundreds, thousands of addresses perhaps? > | > | A small PI site - whatever that means? > | > | A corporation or university PI site? > > E) All of the above. You make two statements: > Any reasonable routing architecture has to deal meaningfully with all of > these types of sites. I agree with this and the first part of your second statement: > Differentiating between site types is somewhat difficult, as > inevitably there is some benefit one way or another but not this: > and it becomes politically intractable to maintain effective > separation. Your current poll question seems to be based on the assumption that it would be impossible (costly to the point of exceeding all possible benefits) to distinguish between different kinds of existing networks when considering the changes each network would need to make in order to adopt the scalable routing solution. Perhaps you could put that up as a question for consensus. I disagree with this position. If people agree with this position, then they would also believe that we can't make different renumbering requirements for any networks. For instance, the scalable routing scheme could not require me to renumber my one IP address DSL-connected home network whilst not requiring the university a few km away to renumber its network. Ideally, no-one would have to renumber. However, this is a desire, not a need. For instance, I don't mind renumbering once - and I think many smaller networks would be happy to renumber once in order to get the lasting benefits of the new kind of address space. I think that if we restrict our scalable routing scheme to meet this desire (of no renumbering for any networks, or for not making any distinction between types and sizes of network regarding the sacrifices each would need to make) as if it were an absolute need, there will be unacceptable costs, restrictions etc. which would make the resulting scheme impractical or at least much less efficient and attractive. I wrote about this earlier: Renumbering once might be OK when converting to Scalable PI (SPI space) http://psg.com/lists/rrg/2008/msg02355.html I think the scheme should expect anyone with PA space to renumber once. I can't imagine any practical method of managing little segments of space in the middle of existing provider networks via the new scalable routing scheme in a manner which scales, leads to optimal path lengths etc. I think that networks with PI space should be able to take one of two courses: 1 - Keep their PI space and administer it as part of the new addressing scheme - turn it into what I call Scalable PI (SPI) space. 2 - Relinquish their current PI space and adopt SPI space administered by someone else. I figure the larger PI networks would have the resources and the motivation (including not having to renumber) to happily choose option 1 and that many smaller PI networks would be happy to take option 2. - Robin -- to unsubscribe send a message to [EMAIL PROTECTED] with the word 'unsubscribe' in a single line as the message text body. archive: <http://psg.com/lists/rrg/> & ftp://psg.com/pub/lists/rrg