Private Data Network Routing (pdnrout) -------------------------------------- Charter Last Modified: 04/07/1998 Current Status: Concluded Working Group Chair(s): CH Rokitansky Routing Area Director(s): Bill Fenner Alex Zinin Routing Area Advisor: <0> Mailing Lists: General Discussion:pdn-wg@bbn.com To Subscribe: pdn-request@bbn.com Archive: 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. \vspace{.15in} 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 Specification of an X.25 Call Setup and Charging Determination Protocol. Done Specification of an X.25 Access and Forwarding Control Scheme. Done Specification of routing metrics taking X.25 charges into account. Done Specification of an X.121 Address resolution protocol. Done Consideration of INTERNET Route Servers. Done Development of Internetwork Management Protocols for worldwide cooperation and coordination of network control and network information centers. Done Provide a testbed for worldwide interoperability between local TCP/IP networks via the system of X.25 public data networks (PDN). Done Development of hierarchical VAN-gateway algorithms for worldwide INTERNET network reachability information exchange between VAN-gateways. Done Implementation of the required algorithms and protocols in a VAN-Box. 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 Application of the INTERNET Cluster Addressing Scheme to Public Data Networks. Done Interoperability between ISO/OSI hosts on TCP/IP networks through PDN. Done Interoperability between local TCP/IP networks via ISDN. Done Definition of the PDN-cluster addressing scheme as an Internet standard. Done Delayed TCP/IP header compression by VAN-gateways and PDN-hosts. Done Assignment of INTERNET/PDN-cluster addresses to PDN-hosts and VAN-gateways according to the developed hierarchical VAN-gateway algorithms. Internet-Drafts: No Current Internet-Drafts. Request For Comments: None to date.