Remi-san, On 2011/09/14, at 15:20, Rémi Després wrote:
> ... > > Let's take the example of sec. 6 (A), namely: > > +--------------------+--------------------+-------------------------+ > | Domain IPv4 prefix | Domain IPv6 prefix | AFTR IPv6 subnet (e.g.) | > +--------------------+--------------------+-------------------------+ > | 192.32../12 | 2001:db0::/28 | 2001:db0:aaaa:aaaa::/64 | > +--------------------+--------------------+-------------------------+ > > +-------------------------+--------------+------------------+-------+ > | CPE IPv6 prefix | CPE IPv4 | Port-set bit | Nb of | > | | address | pattern | ports | > +-------------------------+--------------+------------------+-------+ > | 2001:db1:1111:/48 | 192.33.17.17 | NA | 64K | > | 2001:db2:2222:2000::/52 | 192.34.34.34 | yyyyxxxxxxx0100x | 3840 | > +-------------------------+--------------+------------------+-------+ > > Let's assume that the AFTR has A+P packets to send to CPE IPv4 addresses > 192.33.17.17 and 192.34.34.34 respectively, and both with dst port 0x4445. > If I understand your algorithm correctly, the port number of the example should be '0x4449'. > The L port bits to be included in subnet prefixes are then 2888::/15 > (reversed order port bits 0-14). Also, should it be '0x2444'? > > Destination subnet prefixes then comprise: > - The Domain IPv6 prefix 2001:db0::/28 > - 32 - 12 = 20 rightmost bits of IPv4 addresses, 1111:1000::/20 and > 2222:2000::/20 respectively > - 2888::/15 > - One padding bit set to 0 > > They are: > - 2001:db1:1111:2888::/64 > - 2001:db2:2222:2888::/64 > > Each one starts with the CPE IPv6 prefix of the right dst CPE, which is > enough to reach it. > > Hope it clarifies. Now I understand how your algorithm works. The CEs which comply your algorithm, almost address spaces are consumed for 4rd except /64 prefixes which last bit of prefix is set. Is it correct? cheers, --satoru > > Kind regards, > RD > > _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
