Laurent, 6to4 was not designed for "sites" containing tens of millions of hosts. With those numbers you surely need native addressing. I was addressing Juan-Antonio's question about 6to4.
Regards Brian [EMAIL PROTECTED] wrote: > > Considering that > - a mobile operator may have up to 15-20 M subscribers (e.g. in Medium size >country such as European countries) ... or.. 35M subscribers or more (considering >bigger countries as...China) > - each user attached to IMS (3gpp sip services) has got an IPV6 @ > - although Not 100% of the users have simultaneously switched on their mobile, >we have to take some busy hour worst case > you may end-up with 20-30M or more IPV6 @ per on the APN used by mobiles to reach >IMS services of the operator > > As > - the number of GGSN has to be limited to something reasonable (that obviously >is related to technology capability) > - we have to consider an addressing scheme that copes with foreseenable >technological improvements on the GGSN capabilities > a rough estimate of the number of IPV6 @ a GGSN should handle on this APN should be >between 500K and 1M. > Best regards > Laurent T. > --------------------------------------------------------------------------- > V Laurent Thiebaut tel: +33 (0)1 3077 0645 > A L C A T E L e.mail:[EMAIL PROTECTED] > --------------------------------------------------------------------------- > > Brian E Carpenter <[EMAIL PROTECTED]> on 10/12/2001 19:47:17 > > > > To: Juan-Antonio Ibanez > <[EMAIL PROTECTED]> > > cc: [EMAIL PROTECTED](bcc: Laurent > THIEBAUT/FR/ALCATEL) > > > > Subject: Re: Feedback from 3GPP about draft-wasserman > > > Juan-Antonio Ibanez wrote: > ... > > 2) Would the /64 prefix allocation preclude the use of the 6to4 > > transition mechanism in 3GPP? > > 6to4 relies on a /48 prefix, meaning that only 64k mobile nodes (or > > rather "primary" PDP contexts) would be allowed on a given APN that > > supports 6to4. > > Are you assuming that the APN has exactly one globally routable IPv4 > address? If so, it can only own one 6to4 /48 prefix, i.e. 64k /64s > as you say. But if the APN has 2 IPv4 addresses, it can have two > 6to4 prefixes, etc. > > What is the realistic requirement for the number of primary PDP > contexts per APN? > > Brian -------------------------------------------------------------------- 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] --------------------------------------------------------------------
