Internet Info 1994 March/Internet Info CD-ROM (Walnut Creek) (March 1994).iso/inet/ietf/osigen/osigen-minutes-90dec.txt

Text File | 1993-02-17 | 5KB | 163 lines

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 ``[e-mail]'' 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              [e-mail]
Lida Carrier             [e-mail]
A. Lyman Chapin          [e-mail]
Chris Chiotasso          [e-mail]
Richard Colella          [e-mail]
Robert Cooney            [e-mail]
Curtis Cox               [e-mail]
Burt Cyr                 [e-mail]
Larry Green              [e-mail]
Robert Hagens            [e-mail]
Joel Halpern             [e-mail]
Alf Hansen               [e-mail]
Susan Hares              [e-mail]
Juha Heinanen            [e-mail]
Scott Hiles              [e-mail]
Fred Klein
Mark Koro                [e-mail]
Timothy Kuik             [e-mail]
Charles Kunzinger        [e-mail]
David Marlow             [e-mail]
Judy Messing             [e-mail]
Daniel Molinelli         [e-mail]
Douglas Montgomery       [e-mail]
James Mostek             [e-mail]
James Moulton            Cobra![e-mail]
Mark Needleman           [e-mail]
David Oran               [e-mail]
Nelluri Reddy            [e-mail]
Theresa Senn             [e-mail]
Harvey Shapiro           [e-mail]
Mark Sleeper             [e-mail]
Emil Sturniolo
Edward Taylor            [e-mail]
Kaj Tesink
David Waitzman           [e-mail]
Dale Walters             [e-mail]
Linda Winkler            [e-mail]
Dan Wintringham          [e-mail]
Russ Wright              [e-mail]
Fei Xu                   [e-mail]



                                   3