INTERIM_MEETING_REPORT_ Reported by Bob Hinden/Sun Minute of the IP Address Encapsulation Working Group (IPAE) An interim meeting of the IPAE Working Group took place on March 3, 1993. Participants via the MCI Phone Bridge included, Mike Conn, Yakov Rekhter, Christina Huitema and Carl Beame. On-site participants included, Bob Hinden, Dave Crocker, Erik Nordmark, Steve Deering, Chuck Desostoa, and Ron Jacoby. Review Implementations Status Christian reported that Werner Vogels/IENSC is doing a Mach implementation. Christian is able to spend about twenty percent of his time on SIP implementation. Steve Deering suggested looking at latest Berkeley release on UU.NET sources for the latest BSD implementations that support variable length network addresses (called NET2). Christian would like to have a module that could be added to existing kernels. A SIP route module like MRoute module needs to be incorporated. Chuck Desostoa reported that he is interested in doing an implementation but that he does not have the resources to do it now. Dave Crocker suggested that Hewlett-Packard work with INRIA and TGV because these implementations are based on BSD code. The Silicon Graphics (SGI) implementation is underway and it is expected that the pings will be working within the next few weeks. Beame/Sun Test: Telnet and FTP are working. There is still ICMP testing being done. There are some problems with ICMP checksums. When ICMP is done, complete transport will be done; then on to applications. Expect a few more hours work. Clarified: B&W only doing IPAE now. Geoff Mulligan/KA9Q: SIP packets flowing from KA9Q. Need to test with other implementations. Gary Malkin is doing extensions to SIP stuff for RIPv2. Some discussion on merits of Distance Vector..... [Note: Draft of SIP RIP now out as an Internet-Draft] Bob Gilligan met with James Davidson of Network General. Network General wants to do SIP/IPAE sniffer implementation. They collected some SIP/IPAE traffic traces. Planning for IETF Meeting The next IPAE meeting will be held during the March IETF on Monday at 4:30-6pm. The Group discussed what should be done for the IETF? Give 1 implementation status reports? Discuss ease of implementations, etc. Carl Beame said that he can attend, and might have SIP working by then. Sun is to get Solaris 2.x to Beame. The Group decided to give a demonstration of the following Protocol at the March IETF: o Telnet o FTP o Ping o TFTP (?) o Email (?) The Group decided to setup testing for the IETF demonstration on Wednesday, at SGI. There will be a mixture of on-site and Internet testing. Christian suggested that it was important to have working implementations on the Internet to test against. Sun and SGI can do this. Christian has also been getting inquiries about doing a SIP pilot. He will facilitate this in Europe. SGI will put B&W implementation on the Internet. Carl Beame will be at INTEROP and will meet with Dave Crocker and Bob Hinden. The Group needs to put together a test scenario before the 24th. Steve Deering suggested that a short demonstration document be put together. There was some discussion about BIND and DNS name services. Erik Nordmark will look into adding this to Sun Implementation. Christian expects to have it running soon tool. Will need to put AE records in to make it useful. IPAE Protocol Issues Steve Deering proposed there be a 4 byte PAD between IP and SIP. This would help 64bit machines. He wants comments from implementors and proposed always putting 4 bytes of zero PADs between headers. This will allow more efficient processing of SIP packets on 64bit machines. Only for encapsulating SIP in IPv4. Christian didn't like the original proposal because of implementation and performance costs. The new proposal still requires extra overhead which will be useful in the short to medium term. A long discussion followed on this topic. The Group decided to leave it the way it is now (e.g., no padding between IP and SIP headers) their view being that the complexity was not worth the gain. It needs to be proven that this is really a win in the IPAE case as the gain is not clear given the added complexity to support it. 2 Next Meeting The next meeting of the IPAE Working Group will take place in March with a demonstration of the SIP/IPAE Dry Run at Silicon Graphics. Action Items Steve Deering/Erik Nordmark To see what is required to do audio/video demonstration at IETF. Dave Crocker To get slot for demonstration. He will try for Tuesday afternoon or evening. Bob Gilligan To document demonstration scenario for testing. Ron Jacoby To put B&W implementation up on Internet. 3