CURRENT_MEETING_REPORT_ Reported by Rob Hagens/University of Wisconsin OSIGEN Minutes Agenda o Presentation of the NSFNET CLNP Pilot - Sue Hares. o Presentation of the RARE CLNS Project - Juha Heinanen. o Discussion of NSAP guidelines issues. This meeting was honored with the presence of many X3S3.3 members. Sue Hares presented an informal description of the NSFNET CLNP Pilot project. The CLNP prototype operating in the NSFNET backbone was first demonstrated in 1989 at INTEROP. This CLNP prototype is based upon the original CLNP implementation written by Rob Hagens at the University of Wisconsin - Madison (ARGO) which was later modified to operate in the NSFNET NSS environment by Dave Katz at Merit/NSFNET. The CLNP service was fully deployed as an ``experimental prototype'' by August 1990. It is possible to obtain an NSAP address under the NSFNET OSI test AAI. This NSAP will be valid during the course of the CLNP prototype. It is not a permanent NSAP. Contact ``nsfnet-admin@merit.edu'' for more information about getting a test AAI. Juha Heinanen discussed the RARE CLNS Project. Rare has to prepare for CLNS because of: o Decnet Phase V. o NSFNET and Internet is likely to employ CLNS instead of CONS. o A need for an OSI network service for LAN environments. The goals of the RARE CLNS project are: o Gain practical experience in CLNS networking (interoperability, routing, performance). o Produce a CLNS specific RARE NSAP recommendation. 1 o Propose how to organize the operation and management of CLNS networking in Europe. o Provide a testbed for CONS/CLNS interworking experiments. Nordunet has several CLNS routing domains which are connected via Cisco routers. These routing domains are connected to the NSFNET prototype CLNP service via Nordunet, IXI and RIPE X.25 connected to CERN. The NSAP format in use today is based upon AFI 39, with a DSP which contains: o Version (1 byte) o Organization (3 bytes) o Routing domain (2 bytes) o Area (2 bytes) o Host (6 bytes) o Selector (1 byte) A review of the NSAP guidelines document showed that both topological and administrative address assignment policies have their advantages and flaws. The ``change of address'' problem was discussed. This problem occurs when an ES moves from one regional to another. Two options were identified: o Send ER with ``address not valid code''. o Automatically forward the packet. The packet may be forwarded by either forcing the old regional to keep track of old addresses, or by forcing the new regional to advertise the old addresses. This process may involve encapsulation as well. A thorough written analysis of these scenerios is required. A second issue that was discussed was the problem that occurs when a site is connected to more than one regional. Three solutions were discussed. o Define one address to be advertised to all three regionals. o Break the site into pieces, each with different addresses. o Make all hosts in the site multi-homed. 2 There was no consensus on the best solution to the problem. It is not clear whether there has to be one solution to the problem. The major issue is how will the various strategies affect the architecture, protocols, algorithms and economies of Internet growth. Attendees Ross Callon callon@bigfut.enet.dec.com Lida Carrier lida@apple.com A. Lyman Chapin Lyman@bbn.com Chris Chiotasso chris@roswell.spartacus.com Richard Colella colella@osi3.ncsl.nist.gov Robert Cooney cooney@wnyose.nardac-dc.navy.mil Curtis Cox zk0001@nhis.navy.mil Burt Cyr burt@uncng.com Larry Green green@pei.com Robert Hagens hagens@cs.wisc.edu Joel Halpern jmh@nsco.network.com Alf Hansen Alf.Hansen@pilot.cs.wisc.edu Susan Hares skh@merit.edu Juha Heinanen jh@funet.fi Scott Hiles whiles@relay.nswc.navy.mil Fred Klein Mark Koro koro@dockmaster.mil Timothy Kuik kuik@stpaul.ncr.com Charles Kunzinger kunzinge@ralvmg.iinus1.ibm.com David Marlow dmarlow@relay.nswc.navy.mil Judy Messing messing@gateway.mitre.org Daniel Molinelli moline@trw.com Douglas Montgomery dougm@osi3.ncsl.nist.gov James Mostek mostek@cray.com James Moulton Cobra!jmoul@bellcore.com Mark Needleman mhn@stubbs.ucop.edu David Oran oran@sneezy.enet.dec.com Nelluri Reddy nlr@partha.udev.cdc.com Theresa Senn tcs@cray.com Harvey Shapiro shapiro@wnyose.nardac-dc.navy.mil Mark Sleeper mws@sparta.com Emil Sturniolo Edward Taylor ebtaylor@ralvmg.iinus1.ibm.com Kaj Tesink David Waitzman djw@bbn.com Dale Walters walters@osi3.ncsl.nist.gov Linda Winkler b32357@anlvm.ctd.anl.gov Dan Wintringham danw@osc.edu Russ Wright wright@lbl.gov Fei Xu fei@tdd.sj.nec.com 3