CURRENT_MEETING_REPORT_ Reported by Dave Crocker/Silicon Graphics Minutes of the IP Address Encapsulation Working Group (IPAE) The IPAE Working Group met once during the Columbus IETF. Since IPAE re-aligned itself to provide transition technology for SIP, the foci of IPAE discussions have been. 1. Modifications to SIP that are likely to facilitate transition, and 2. Implementation experiences with SIP/IPAE. (Reference to IPAE usage is specifically to SIP-over-IP and SIP-mapped-to-IP. The first is to tunnel through the Internet and the second is to gateway to IPv4 hosts.) The Working Group meeting held a brief discussion about the SIP/IPAE demonstration slated for later in the week, discussing the implementations being shown and their use. Bob Gilligan and Ron Jacoby discussed their implementation work. The Beame & Whiteside, Intercon, TGV and Network General implementations, for DOS & Windows MacIntosh, VMS and network monitoring, respectively, were not available to make presentations. Then, Steve Deering raised the issue about whether SIP fragmentation is end-to-end only, or can occur en-route. He is interpreting the Group's response as supporting the position that SIP fragmentation need *not* occur en-route. The following day began a rest-of-the-week demonstration of SIP/IPAE in action. All of the listed vendors had implementations participating. Within the demo facility, hosts interacted with pure SIP (SIP to SIP) and with pure IP (of course) and went through the unmodified Internet to interact with other SIP hosts, using IPAE tunneling (SIP-over-IP). While the Sun workstation can perform IPAE translation, operational constraints limited the demonstration so that SIP-mapped-to-IP translation was not included. Attendees Randall Atkinson atkinson@itd.nrl.navy.mil Dennis Baker dbaker@wellfleet.com David Crocker dcrocker@mordor.stanford.edu Steve Deering deering@parc.xerox.com Christine Fredenburg cfredenburg@dsac.dla.mil Danny Hanson hanson.tic@commlan.safb.af.mil John Hascall john@iastate.edu Ronald Jacoby rj@sgi.com 1 Scott Kaplan scott@wco.ftp.com Kenneth Key key@cs.utk.edu John Krawczyk jkrawczy@wellfleet.com Charles Lynn clynn@bbn.com Gary Malkin gmalkin@xylogics.com Michael Marcinkevicz mdm@csu.net Erik Nordmark nordmark@eng.sun.com John Penners jpenners@advtech.uswest.com David Reese dave@csu.net Terry Sullivan terrys@newbridge.com L. Stuart Vance vance@tgv.com Curtis Villamizar curtis@ans.net Hung Vu hungv@fonorola.com Fred Whiteside fred@bws.com Jane Wojcik jwojcik@bbn.com 2