In past working group sessions we've already discussed the benefits and
disadvantages of the various methods of representing 32 bit ASNs (i.e. 'asplain,' 'asdot'). There is now an internet-draft recommending asplain (which is just a single 32 bit integer) in last call at the IETF which can be obtained from the following URL:
http://www.ietf.org/internet-drafts/draft-ietf-idr-as-representation-01.txt
A related policy proposal reached consensus at the last APNIC meeting and is now in last call there:
this proposal was accepted by the apnic sig and member meetings, and is in final discussion on the mailing list. it has no significant additional comment, and would be passed to the apnic ec before the end of this month. but, friends at the ietf have said that they believe they can get the ietf document done and fully processed before the end of the year. so we plan to stall the apnic process in hopes that the ietf can execute theirs. randy, apnic policy chair