Private Data Network Routing (pdnrout)

Charter_

Chair(s):
     CH Rokitansky, roki@isi.edu
Mailing Lists:
     General Discussion:  pdn-wg@bbn.com
     To Subscribe:  pdn-request@bbn.com
Description of Working Group:

     The DoD INTERNET TCP/IP protocol suite has developed into a de
     facto industry standard for heterogenous packet switching
     computer networks.  In the US, several hundreds of INTERNET
     networks are connected together; however the situation is
     completely different in Europe.

     The only network which could be used as a backbone to allow
     interoperation between the many local area networks in Europe,
     now subscribing to the DoD INTERNET TCP/IP protocol suite,
     would be the system of Public Data Networks (PDN). However, so
     far, no algorithms have been provided to dynamically route
     INTERNET datagrams through X.25 public data networks.
     Therefore, the goals of the Public Data Network Routing Working
     Group are the development, definition and specification of
     required routing and gateway algorithms for an improved routing
     of INTERNET datagrams through the system of X.25 Public Data
     Networks (PDN) to allow worldwide interoperation between TCP/IP
     networks in various countries.  In addition, the application
     and/or modification of the developed algorithms to interconnect
     local TCP/IP networks via ISDN (Integrated Services Digital
     Network) will be considered.


Goals and Milestones:


Done          Application of the INTERNET Cluster Addressing Scheme to
              Public Data Networks.
Done          Development of hierarchical VAN-gateway algorithms for
              worldwide INTERNET network reachability information
              exchange between VAN-gateways.
Done          Assignment of INTERNET/PDN-cluster network numbers to
              national public data networks.  (Mapping between INTERNET
              network numbers and X.121 Data Network Identification
              Codes (DNICs)).
Done          Assignment of INTERNET/PDN-cluster addresses to PDN-hosts
              and VAN-gateways according to the developed hierarchical
              VAN-gateway algorithms.

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Done          Definition of the PDN-cluster addressing scheme as an
              Internet standard.
Done          Specification of an X.121 Address resolution protocol.
Oct 1989      Specification of an X.25 Call Setup and Charging
              Determination Protocol.
Oct 1989      Specification of an X.25 Access and Forwarding Control
              Scheme.
Oct 1989      Specification of routing metrics taking X.25 charges into
              account.
TBD           Delayed TCP/IP header compression by VAN-gateways and
              PDN-hosts.
TBD           Provide a testbed for worldwide interoperability between
              local TCP/IP networks via the system of X.25 public data
              networks (PDN).
TBD           Implementation of the required algorithms and protocols
              in a VAN-Box.
TBD           Interoperability between ISO/OSI hosts on TCP/IP networks
              through PDN.
TBD           Consideration of INTERNET Route Servers.
TBD           Interoperability between local TCP/IP networks via ISDN.
TBD           Development of Internetwork Management Protocols for
              worldwide cooperation and coordination of network control
              and network information centers.



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