rfc1070.txt

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             it and everything following it on that line is a comment.
             For example:

             128.105.2.153 # bounty.cs.wisc.edu

   core.EON-UDP
             This is the equivalent of core.EON for use with
             the UDP/IP subnet.  The format is the same that of
             core.EON.

   hosts.EON This is a list of the ASCII host names of all end
             systems participating in the IP subnet experiment,
             one host name per line.  It is not used by the OSI
             CLNL.

   hosts.EON-UDP
             This is a list of the ASCII host names of all end
             systems participating in the UDP/IP subnet experiment,
             one host name per line.  It is meant for the use of
             applications.  It is not used by the OSI CLNL.

   The files will be available from the IANA via anonymous ftp.  Sites
   wishing to join the experimental OSI internet will have to have their
   host names and core system addresses added to the appropriate files.
   They may do so by sending requests to Joyce K. Reynolds at the
   electronic mail address:

             [e-mail]







Hagens, Hall, & Rose                                           [Page 12]

RFC 1070                  Experimental OSI Net             February 1989


Hypothetical EON Topology

   Figure 1 describes the logical links in a hypothetical topology, in
   which three university computer sciences departments are
   participating in the experiment: the University of Wisconsin (U of
   W), the University of Tudor (U of Tudor), and the University of
   Fordor (U of Fordor).  The U of W has two local area networks(LANs),
   128.105.4 and 128.105.2, and four systems that are acting as ESs in
   the experiment.  Two systems are attached to both LANs.  Only one of
   these two systems is forwarding ISO-grams, in other words, acting as
   an IS.  The U of Tudor has only one participating system, and it is
   acting as an ES.  The U of Fordor has two systems that are
   participating in the experiment, one of which is an IS only, and the
   other of which is acting as an ES only.

   The contents of the core.EON and hosts.EON files for this topology
   are shown below.

   #
   # core.EON for hypothetical EON topology
   #
   128.105.2.153   # IS/ES in cs.wisc.edu
   26.5.0.73       # ES in cs.tudor.edu
   192.5.2.1       # IS in cs.fordor.edu


   #
   # hosts.EON hypothetical EON topology
   #
   128.105.4.150   # ES in cs.wisc.edu
   128.105.2.150   # same as above : multihomed ES
   128.105.4.154   # ES in cs.wisc.edu
   128.105.4.151   # ES in cs.wisc.edu
   128.105.2.153   # IS/ES in cs.wisc.edu
   26.5.0.73       # ES in cs.tudor.edu
   192.5.2.2       # ES in cs.fordor.edu















Hagens, Hall, & Rose                                           [Page 13]

RFC 1070                  Experimental OSI Net             February 1989


    ______U of WI (128.105)______
   (                             )
   ( 128.105.4                   )
   (   |                         )                   _U of Tudor__
   (   |   128.105.2.150         )                  (             )
   (   |   128.105.4.150         )                  (             )
   (   |------ES-----------|     )                  (   ES        )
   (   |                   |     )                  (  26.5.0.73  )
   (   |                   |     )                  (   |         )
   (   |                   |     )                  (___|_________)
   (   |                   |     )                      |
   (   |                   |     )         -------------
   (   |---ES              |     )        _|_
   (   |  128.105.4.154    |     )       (   )
   (   |                   |     )      (     )
   (   |                   |     )     (  IP   )
   (   |                   |----------(  subnet )
   (   |                   |     )     (       )
   (   |                   |     )      (     )
   (   |                   |     )       (___)
   (   |---ES              |     )         |
   (   |  128.105.4.151    |     )         -------------
   (   |                   |     )                      |
   (   |                   |     )                 _U of Fordor_
   (   |                   |     )                (     |       )
   (   |---IS/ES-----------|     )                (     |       )
   (      128.105.2.153    |     )                (    IS       )
   (      128.105.4.153    |     )                (   192.5.2.1 )
   (                       |     )                (     |       )
   (                       |     )                (     |       )
   (                  128.105.2  )                (    ES       )
   (                             )                (   192.5.2.2 )
   (_____________________________)                (_____________)

                    Figure 1: Hypothetical EON Topology


   The U of Fordor system 192.5.2.1 may, in addition to acting as an IS,
   begin acting as an ES at any time, by participating in the ES-IS
   protocol as an ES and by beginning to serve a set of NSAPs.  It may
   act as an ES or as an IS or as both.  In fact, the U of Fordor
   systems 192.5.2.1 and 192.5.2.2 could reverse roles at any time,
   regardless of their physical connectivity to the Internet, merely by
   modifying their use of the ES-IS protocol and by their serving or not
   serving NSAPs.  Suppose that these two systems reverse roles:
   192.5.2.1 becomes an ES, not a core system, and 192.5.2.2 becomes a
   core system and an IS.  Suppose further that the experimenters at the
   U of Fordor do not inform the IANA of the change immediately, so the



Hagens, Hall, & Rose                                           [Page 14]

RFC 1070                  Experimental OSI Net             February 1989


   core.EON file is out-of-date for a while.  The effect will be that
   other core systems will continue to send configuration messages to
   192.5.2.1, which will respond as an ES, not as an IS, and it will
   appear that 192.5.2.2 is not reachable from the rest of the topology
   because the other core systems will not know to send configuration
   information to it.  However, when 192.5.2.2 is booted, it will send
   configuration messages to all core systems informing them of its
   existence via the IS-IS protocol.  Those core systems that are acting
   as ISs will respond with their configuration messages, update their
   core system caches, thereby establishing a set of logical links
   between 192.5.2.2 and the rest of the core systems.

Relationship of this Memo to other RFCs

   RFCs 1006 and 983

      ISO Transport Services on top of the TCP.  Whereas RFCs 1006 and
      983 offer a means of running the OSI session layer protocol and
      higher OSI layers over TCP/IP, this memo provides a means of
      running the OSI network and transport layers on an IP
      internetwork.

   RFC 1069

      Guidelines for the use of Internet-IP addresses in the ISO
      Connectionless-Mode Network Protocol.  RFC 1069 suggests a method
      to use the existing Internet routing and addressing in a gateway
      that forwards ISO connectionless network layer protocol datagrams.
      In contrast, this memo suggests a method to use the ISO routing
      and addressing in a gateway that forwards ISO connectionless
      network layer protocol datagrams.

   RFC 982

      ANSI Working Document X3S3.3/85-258.  This is a set of guidelines
      for specifying the structure of the DSP part of an ISO address.
      The addresses described in this memo meet the guidelines set forth
      in RFC 982.

References

      Plummer, D., "An Ethernet Address Resolution Protocol - or -
      Converting Network Protocol Addresses to 48.bit Ethernet Address
      for Transmission on Ethernet Hardware", RFC 826, MIT, November
      1982.

      Finlayson, R., T. Mann, J. Mogul, and M. Theimer, "A Reverse
      Address Resolution Protocol", RFC 903, Stanford, June 1984.



Hagens, Hall, & Rose                                           [Page 15]

RFC 1070                  Experimental OSI Net             February 1989


      Postel, J., "Internet Protocol - DARPA Internet Program Protocol
      Specification", RFC 791, DARPA, September 1981.

      Postel, J., "Internet Control Message Protocol - DARPA Internet
      Program Protocol Specification", RFC 792, ISI, September 1981.

      Postel, J., "User Datagram Protocol", RFC 768, ISI, August 1980.

      ISO, "Protocol For Providing the Connectionless Mode Network
      Service", (ISO 8473), March 1986.  (This is also published as RFC
      994.)

      ISO, "End System to Intermediate System Routing Exchange Protocol
      for Use in Conjunction with the Protocol for the Provision of the
      Connectionless-mode Network Service (ISO 8473)", (ISO DP 9542).
      (This is also published as RFC 995.)

      ISO, "Intermediate System to Intermediate System Intra-Domain
      Routing Exchange Protocol", (ISO TC 97/SC 6/N xxxx).

      OSI, "OSI Routing Framework", (PD TR 97/SC 6/N 9575).






























Hagens, Hall, & Rose                                           [Page 16]

RFC 1070                  Experimental OSI Net             February 1989


Authors' Addresses

      Robert A. Hagens
      Computer Sciences Department
      University of Wisconsin - Madison
      1210 West Dayton Street
      Madison, WI  53706
      608/ 262-1017

      EMail: [e-mail]

      Nancy E. Hall
      Computer Sciences Department
      University of Wisconsin - Madison
      1210 West Dayton Street
      Madison, WI  53706
      608/ 262-5945

      EMail: [e-mail]

      Marshall T. Rose
      The Wollongong Group
      San Antonio Blvd.
      Palo Alto, California
      415/ 962-7100

      Email: [e-mail]




Comments and Suggestions

   Please direct comments, suggestions, and indications of desire to
   participate to the authors.
















Hagens, Hall, & Rose                                           [Page 17]