Subject: [mobile-ip] a few more FMIP comments

From: Michael Thomas <[email-masked]>
Date: Tue, 8 May 2001 13:03:39 -0700 (PDT)

1) ESP friendliness: currently there is text in the
   draft which speaks of AH headers, but nothing about
   ESP headers. We should make the language neutral
   as well as fix any dependencies on AH itself (beyond
   the BU's which is a seperable issue). This may 
   require source addresses to be carried in the
   router solicit/advertizements itself, rather
   than expecting them to come from outer IP
   header. Frankly, this is just good modular
   design.

2) I have a question as to whether anybody
   considered combining the Proxy Router
   Solicit functionality with the binding
   update for the mobile initiated handoff.
   Considering the mobile is probably moving
   out of range, this seems like it's a 
   pretty critical time and the fewer
   messages required, the better. As a
   strawman couldn't we do something like:

   MN              oldAR              newAR

   BU+XOFF+RS------->
                    [HI---------------->]
                    [<--------------HACK]
   <---------BUACK+RA

   Where XOFF is the buffer bit (to stop packets
   from flowing) and RS and RA are the pertinent
   parts of the Fast MIP solicit/advert payloads?

	    Mike