It's short-sighted *not* to think of the 3G (or 4G) devices as routers - we certainly need to recommend an approach for 3G that will also work for 4G - in 4G, surely we will get a solution in which the cellular terminal will act as a router for the personal area network
Just give them each a /64. Anything else is fiddling with details. (Also see RFC 3177, section 3) Brian "Hesham Soliman (ERA)" wrote: > > John, > > Please see my comment below. > > => Actually it seems to me that the solution in the draft > is a lot simpler than the one in the current 3GPP specs, but > I might have missed something that concerned you ? > > I agree. The solution in the draft is simpler however at the expense of what I view >as being a wasteful implementation. The draft proposes /64 being allocated to each >mobile device at a minimum and problably multiple /64s. This would be perfectly >acceptable if each mobile device was a mobile router supporting mobile subnets - but >in 3GPP that is not the case, a mobile device is a host and in many cases the hosts >may have very basic functionalities. > > => I understand that it seems wasteful, however, according > to the calculations in section 7.3.1 of the draft, we > can afford to trade off the efficiency of address allocation > for simplicity. > To my knowledge, nothing in the 3GPP specifications prohibits > a UE from being a router. Granted that currently, it seems > that UEs are not heading that way, but why not have a > mechanism that allows the UE to be a router _if_needed_ > in future. > You could probably argue that there might be more efficient > mechanisms, but when we consider the limitation of not wanting > to significantly impact the 3GPP specs, this solution > seems reasonable. > > The working group should provide guidance on whether such a solution is something >they are comfortable with being recommended to 3GPP. > > => That's what we�'re doing now :) > > Regards, > Hesham > -------------------------------------------------------------------- > 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] > -------------------------------------------------------------------- -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Brian E Carpenter Distinguished Engineer, Internet Standards & Technology, IBM On assignment at the IBM Zurich Laboratory, Switzerland Board Chairman, Internet Society http://www.isoc.org -------------------------------------------------------------------- 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] --------------------------------------------------------------------
