Michael Thomas wrote: > So I have a question for those who support > connected site locals: what would prevent a new > RFC from updating Brian's wording for site locals > (if that's the right thing)? > > I say this because it seems to me that there's a > lot of issues being conflated in these arguments > and what's sort of frightening to me is that they > need to be teased apart. In particular, the desire > for provider independent addressing seems to > factor in here fairly largely too, and I wonder if > the better part of valor might not be to get > together a BOF which focuses on the actual real > life requirements here. It's possible that site > locals in the end might make sense here, but it's > also possible that it can be done other ways too > (or that the entire problem is totally intractable > which is the way it looks to me now). >
Some of the uses for SL would be better served by PI addresses, but not all. Take the case of a 20,000 node network where half are allowed global access and half are not. It is much more complex to sort through a 10,000 node list per packet for access filtering than it would be to have two entries, SL deny & PA allow. Yes the list of which 10,000 nodes are allowed the global prefix has to be maintained, but it can be applied according to allocation policy rather than per packet processing. Yes we need a PI format, and there are a few being batted around on multi-6, but even there we are into engineering trade-offs about allocation efficiency vs. routing table exception handling efficiency. My intent was to bring a PI format proposal to this wg after multi-6 established requirements, but that wg seems to have been derailed into the long running saga of overhauling the entire protocol suite. If there is interest in discussing a PI format to get that off the table for the SL discussion, I will ask the chairs to consider it as a WG doc. Tony -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
