From 100434.3031@compuserve.com Sun Jun 7 06:47:35 1995 Received: from eunet.EU.net by dkuug.dk with SMTP id AA24650 (5.65c8/IDA-1.4.4j for ); Wed, 7 Jun 1995 17:30:07 +0200 Received: from dub-img-2.compuserve.com (dub-img-2.compuserve.com [198.4.9.2]) by eunet.EU.net (8.6.10/8.6.10) with ESMTP id RAA25126 for ; Wed, 7 Jun 1995 17:26:22 +0200 Received: by dub-img-2.compuserve.com (8.6.10/5.950515) id KAA13573; Wed, 7 Jun 1995 10:54:35 -0400 Date: 07 Jun 95 10:47:35 EDT From: Jean Stride <100434.3031@compuserve.com> To: ISO/IEC JTC 1/SC 24 Subject: SC 6 Contribution on Internet and OSI Message-Id: <950607144735_100434.3031_BHG47-2@CompuServe.COM> X-Charset: ASCII X-Char-Esc: 29 ISO/IEC JTC1/SC6 N 9613 Date: 23 May 1995 ISO/IEC JTC1/SC6 TELECOMMUNICATIONS AND INFORMATION EXCHANGE BETWEEN SYSTEMS Secretariat: U.S.A. (ANSI) Title: ISO/IEC JTC 1/SC 6 Contribution on "Internet and OSI Lower Layers Convergence Strategy" Source: ISO/IEC JTC 1/SC 6 Project: -- Status: In accordance with decisions taken at the SC 6 Plenary meeting in Beppu, Japan, 23 March 1995 (reference Resolution 110), the attached document is being forwarded to the designated point of contact for the Internet Society (ISOC) for consideration as an SC 6 liaison contribution in their work on the subject shown. SC 6 also sends this document to JTC 1/SCs 18, 21, 24, 27 and 29 for consideration for information. Action: This document is being circulated to the membership of SC 6 for information and review and to the distribution list identified above. The SC 6 Secretariat has also provided a copy of this document to the Secretariat of ISO/IEC JTC 1 for information. Distribution: P and L Members Working Group Conveners and Secretariats Mr. J. Wheeler, Chairman of SC 6 Distribution List identified above Address Reply to: Secretariat - ISO/IEC JTC1/SC6 - American National Standards Institute, 11 West 42nd Street, NY, NY 10036 Telephone: 212 642 4931; Facsimile: 212 398 0023; Email: sleistne@ansi.org ------------ PAGE BREAK -------------- ISO/IEC JTC 1/SC 6 N 9613 (HoD/C 3 Revision 3) INTERNET AND OSI LOWER LAYERS CONVERGENCE STRATEGY LIAISON BETWEEN SC 6 AND INTERNET SOCIETY ISO/IEC JTC 1/SC 6 has already established a Class A liaison relationship with the Internet Society (ISOC) and has negotiated a Cooperative Agreement which defines the operating relationship between SC 6 and the Internet Engineering Task Force (IETF) in ISOC. GOAL OF THE LIAISON The basic goal of the liaison is to 'converge' the OSI lower layers and the lower layers of the Internet Protocol Suite (IPS), generically referred to as TCP/IP, and, ultimately, to create a common global networking platform for the future. This will avoid wasted effort on uncoordinated development of competing protocols within the two organizations and accelerate future progress. STRATEGY FOR ACHIEVING THE GOAL Currently, the focus of the liaison is on the convergence of the OSI and TCP/ IP networking layers, in particular, the OSI Connectionless Networking Protocol (CLNP) and the Internet Protocol part (IP) of TCP/IP. The basic goal demands the extension of this liaison effort to embrace convergence at the Transport layer. At the network layer, the IETF is developing a 'next generation' Networking Protocol to replace the current Internet Protocol version 4 (IPv4). This new protocol is referred to as IPng and will become IP version 6 (IPv6 or IP6). IP6 has similar functionality to the OSI Connectionless Network Protocol (CLNP) but is different in its detailed operation. Convergence of the network layers involves the creation of mechanisms which allow CLNP and IP6 to coexist and the provision of migration mechanisms to allow the ongoing development effort in both SC6 and the IETF to focus on one of these protocols. IP6 will be the key focus in this area but the deployment mechanisms must address the issues of support for CLNP users during migration. Convergence at the Transport layer has not been addressed fully by either organization. Any work on an enhanced Transport Protocol to fulfil new requirements to complement the existing Internet TCP and Transport Protocol Class 4 (TP4), which is its equivalent in OSI, should support both OSI applications and applications from the Internet Protocol Suite. As with network layer convergence, carefully designed coexistence and migration strategies are required to allow the support of existing implementations. WORK PROGRAMME In order to achieve the basic goal, SC 6 will: a) work on next generation IP (IP6) - review the portfolio of IP6 specifications and comment from the ISO/IEC perspective; b) consider other associated specifications, e.g. OSI Transport Protocol Class 4 (TP4) over IP6; c) consider and document convergence and migration issues, including likely starting points, intermediate points, transition mechanisms and migration strategies. ESTABLISHING AN SC 6 RAPPORTEUR GROUP The IETF development process involves quarterly meetings and on-line technical debate between meetings via distribution lists, which are open to subscription by all IETF and SC 6 members. In order that matters regarding convergence might be adressed in a timely manner and in concert with the IETF development process, SC 6 shall establish a Rapporteur Group on OSI and Internet Convergence with the following Terms of Reference: The Rapporteur Group on OSI and Internet Convergence will utilize the liaison relationship which has been facilitated by the approved Cooperative Agreement, e.g. conveyance of our technical work to the IETF. The Rapporteur on OSI and Internet Convergence shall report and make recommendations to the subsequent SC 6 meeting. Continuation of the Rapporteur Group shall be reviewed at each Plenary meeting of SC 6. The initial membership of the Rapporteur Group is: [ To be established ] (NOTE: Germany, Finland, Korea, UK, and the US have indicated interest in providing experts for the Rapporteur Group) The initial SC 6 Rapporteur is: Jack Houldsworth (Internet Address: J.Houldsworth@ste0426.wins.icl.co.uk) Work of the Rapporteur Group will be conducted via electronic mail. Meetings will be held in conjunction with regularly scheduled Plenary meetings of ISO/ IEC JTC 1/SC 6. Members will be expected to subscribe to the relevant IETF mailing lists and, in so far as possible, to attend IETF meeetings. Contributions conveyed by the Rapporteur Group to the IETF shall contain one of the following statements: This contribution has been authorized as a liaison statement from SC 6 to the IETF in accordance with Resolution ____ of the SC 6 Plenary meeting in __________. or "From the viewpoint of the SC 6 Rapporteur Group this contribution is": 1) a consensus view of the Rapporteur Group members 2) a result of activity delegated to an individual expert 3) an individual expert opinion ------------ PAGE BREAK -------------- GOALS OF TECHNICAL WORK: Basic outcome --------------------- * Development of a common transport protocol (joint text) to fulfil new requirements which operates over both IP6 and CLNP. * Migration to a common networking protocol base with the IETF. Intermediate steps/work areas 1. Network Layer 1.1. IP6 and CLNP coexistence, interworking and migration mechanisms. 1.2. Refine the IETF draft proposal for OSI coexistence. 2. Transport Layer 2.1. Adopt the existing RFC 1006 to allow OSI transport service based applications to run over either IP6 or IP4. 2.2. Develop mechanisms for using TP4 over either IPv6 and CLNP for coexistence. 2.3. Consider the use of TUBA (TCP over CLNP) as an intermediate coexistence tool. 2.4. Develop a new transport protocol in cooperation with the IETF. 2.5. Consider the adoption of migration tools such as the X/Open Transport Interface (XTI) and the X/Open Multi-Protocol Transport Networking (XMPTN) specifications. 3. Routeing 3.1. IDRP, ES-IS, IS-IS 4. Lower Layers Management 5. Lower Layers Security ----- END OF FILE ------