Le 14 sept. 2011 à 10:04, Satoru Matsushima a écrit : > 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'.
Oops, you are right. Sorry for the mistake. > > >> 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'? Indeed. > >> >> 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. Thanks. > 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? Difficult to understand what you mean. If you rephrase it differently, I will try to confirm or not. Cheers, RD > > cheers, > --satoru > > > >> >> Kind regards, >> RD >> >> > > _______________________________________________ Softwires mailing list Softwires@ietf.org https://www.ietf.org/mailman/listinfo/softwires
