On Wed, 26 Feb 2003, Ole Troan wrote: > > 2) Multiple IA_PD looks unnecessarily complex. Are there any valid > > reasons why it wouldn't be just enough to have only one IA_PD per > > requesting router? (The option to and subsequent complexity of) > > generating one for each interface seems like a completely unnecessary > > feature to me -- it's the router which should be doing prefix delegation > > to it's downstream interfaces! > > let me pick this one up from the start. > the reasons for allowing multiple IA_PDs are: > > - consistency with address assignment as you can use multiple IA_NAs > - future-proofing. in the ISP/user scenario I do see little need for > multiple IA_PDs. if PD is used within an administrative domain > assigning prefixes to downstream interfaces may make more sense
My take on this is is that "we don't need that yet, so why add it yet"; leaving the "base prefix delegation spec" extendable (e.g. define multiple IA_PD's in a later document) would be just fine. > it does add some complexity, and I think we've made it pretty clear in > the draft that the typical usage will be to use one IA_PD. we just > didn't want to close the door on possible future uses of the protocol. IMO, it wasn't as clear as that. I can live with this, but I can't help wondering why the base spec has to cover even all the theoretical cases. I'd much rather see a very simple basic version of prefix delegation which can be used to get started. There's no way we could anticipate what will be needed in 3-5 years and we could further define the extensions when they're needed. -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings -------------------------------------------------------------------- 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] --------------------------------------------------------------------
