INTERIM_MEETING_REPORT_ Reported by Robert Hinden/SUN Minutes of the IP Address Encapsulation Working Group (IPAE) This meeting of the IPAE Working Group took place on September 24, 1992 in a Video Conference between Mt. View, CA and Lincoln, MA 1. Reviewed Agenda Items. 2. Reviewed Action Items from Previous Meeting. 3. Review of Recent Work. ICMP Reviewed G. Chesson's ICMP extensions. Decided that an IPAE redirect was necessary, but that special Destination unreachable was not needed. ACTION: Chesson to update work and write up mechanism to map ICMP error messages between commonwealths assuming that sender includes IPAE header in ICMP error message. Addressing Reviewed work of previous days addressing meeting. Unicast Metro / Provider Address - -------------------------------- 1 1 6 24 32 32 +-+-+------+------------+----------------+----------------+ | |0| | /Metro | Site | | |0|/| RSVD | City Code | |32bit IP Address| | |1| | \Provider| Subscriber | | +-+-+------+------------+----------------+----------------+ M C M (Multicast) bit is 0 for Unicast, 1 for Multicast C (IP Compatibility) bit is 0 for IPAE destination, 1 for IP destination Multicast (Compatible w/ current IP Multicast) - ---------------------------------------------- 1 1 6 24 32 32 +-+-+------+------------+----------------+----------------+ | | | | | | |1|1| RSVD | (unused) | 32bit Class D | | | | | | IP Address | +-+-+------+------------+----------------+----------------+ M C 1 Multicast (New Multicast Format) 1 1 6 8 80 +-+-+------+-----+----------------------------------------+ | | | |Flags| | |1|0| RSVD | + | Multicast Group ID | | | | |Scope| | +-+-+------+-----+----------------------------------------+ M C ACTION: Steve Deering to write IPAE addressing architecture and hold follow addressing sub-group meeting to review writeup. Commonwealth Router Discovery Concluded that discovery mechanism proposed by John Moy/Proteon would be fine. ACTION: Hinden to get IP address assigned for Commonwealth router discovery. 4. Close Outstanding Technical Issues DNS SUPPORT Discussed where changes to DNS would be necessary and which DNS servers would have to support IPAE at each stage in the transition. ACTION: Crocker to bring DNS experts into loop and write up details for document. Inter-Commonwealth Routing Discussed and concluded that for provider based addressing, use BGP4 with support for 96bit IPAE addresses. Metro based routing some what harder. ACTION: Deering to write up routing approach. ACTION: Hinden to discuss w/Yakov Rekhter about adding support for 96-bit addresses to BGP4. 5. Transition Issues 32-BIT IP Address => Commonwealth Address Mapping Discussed different approaches: Static table, pure DNS, and hybrid consisting of background DNS collection to local server + real time query by Commonwealth Router to local server. ACTION: Hinden to write up static approach. 6. Implementation Plans and Schedule SGI, Proteon, and Sun intend to build prototype IPAE implementations. Minimum test configuration need was: 2 | | IP-----| |------IP | | |---------(IP)-----(IPAE)-----(IPAE)------| | | IPAE---| |----IPAE | | Testing can be done with out building any new infrastructure. It can be done using existing internet. Implementation subgroup will be formed. Bob Gilligan agreed to lead and coordinate. ACTION: Gilligan to set up implementors meeting and develop testing plan. Next Meetings o October 9, Video Conference (Mt. View and Lincoln) o October 15, Video Conference (Mt. View and Lincoln) 3