Ole, Where can I get the formal definition of 1:1 mode? My understanding of 1:1 refers to one public IPv4 address per subscriber but you refer very specific to decoupling IPv4 and IPv6 addresses.
Before MAP was accepted as WG item, MAP was proposed to embed IPv4 address information (EA bits > 0) in the CE IPv6 address to achieve stateless. Now there is a new proposal to add a new feature to have the IPv4 information in the BR only. This change requires to provision individual subscriber information to the BR (instead of aggregated information). Benefit are saving bits and breaking v4 and v6 address dependency. Questions to WG: Is it useful feature to be included in MAP? If not, why and alternative? Thanks, Yiu On 7/25/12 2:40 PM, "Ole Trøan" <[email protected]> wrote: >Yiu, > >> I am not asking whether MAP supports 1:1 mode with no EA bits or not. I >>am >> asking MAP allows to embed the 32-bit address in the EA bits to achieve >> 1:1 mode: >> >> "The EA bits can contain a full or part >> of an IPv4 prefix or address, and in the shared IPv4 address case >> contains a Port-Set Identifier (PSID)." >> >> Why not use this instead? > >you can do either. >embedding a complete IPv4 address and PSID does require a lot of IPv6 >space though. >e.g. /56 - 32 - 6 = /18 > >1:1 mode is typically referred to a model where IPv4 and IPv6 addressing >are independent. > >cheers, >Ole >
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
