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- Network Working Group D. Latham
- Request for Comments: 1039 DoD
- Obsoletes RFC-945 January 1988
-
- A DoD Statement on Open Systems Interconnection Protocols
-
- Status of this Memo
-
- This RFC reproduces a memorandum issued on 2-JUL-87 from the
- Assistant Secretary of Defense for Command, Control, Communications,
- and Intelligence (ASDC31) to the Director of the Defense
- Communications Agency (DCA). This memo is distributed for
- information only. Distribution of this memo is unlimited.
-
- Memorandum
-
- There has been recent rapid progress in the specification and
- implementation of computer protocols based on the International
- Organization for Standardization model for Open Systems
- Interconnection (OSI). The Government OSI Profile (GOSIP), dated 22
- April 1987, contains sufficient information to specify adequately and
- acquire interoperable vendor implementations of OSI message handling
- and file transfer capabilities. Therefore, the policy on
- standardization of host-to-host protocols for data communications,
- promulgated by USDR&E memo of 23 March 1982, is modified as follows.
- The OSI message handling and file transfer protocols, together with
- their underlying protocols as defined in GOSIP, are adopted as
- experimental co-standards to the DoD protocols which provide similar
- services (MIL-STDs 1777, 1778, 1780, and 1781). These OSI protocols
- may be specified in addition to, in lieu of, or as an optional
- alternative to DoD protocols, in cases where the current DoD protocol
- applicability statements apply. They are designated as experimental
- because of the limited operational experience currently available
- with the OSI protocols and the limited operational, testing, and
- security environment currently defined in GOSIP. Services and
- agencies choosing to implement OSI protocols at this time should
- carefully evaluate these factors and be prepared to deal with the
- complications which may accompany the introduction of new technology.
-
- It is intended to adopt the OSI protocols as a full co-standard with
- the DoD protocols when GOSIP is formally approved as a Federal
- Information Processing Standard. Two years thereafter, the OSI
- protocols would become the sole mandatory interoperable protocol
- suite; however, a capability for interoperation with DoD protocols
- would be provided for the expected life of systems supporting the DoD
- protocols.
-
- In order to extend the OSI protocol capabilities and provide
-
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- Latham [Page 1]
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- RFC 1039 A DoD Statement on OSIP January 1988
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- interoperability between the DoD and OSI protocols as rapidly as
- possible, the following actions are requested:
-
- a. The Director, Defense Communications Agency, as the DoD
- Executive Agent for Data Communications Protocol Standards,
- should:
-
- * Publish by November 1987 the DoD-OSI Interoperability and
- Transition Plan. The plan should provide for interoperation of
- the DoD and OSI protocols at the application level. A capability
- for experimental interoperability of DoD and OSI message handling
- and file transfer capabilities should be provided by March 1988,
- and a limit operational capability by January 1989.
-
- * Join the Corporation for Open Systems (COS) as the Department of
- Defense representative. COS is a non-profit consortium formed to
- deal with testing and other operational issues relating to OSI
- protocols. At the request of the Office of Management and Budget,
- the Services and other defense agencies should not join COS
- directly, but may participate as the agents of DCA on appropriate
- COS committees.
-
- * Coordinate Service and agency participation, in accordance with
- existing directives, in groups developing OSI standards,
- specifications and operating and management procedures. These
- groups include the Government OSI User's Group, the National
- Bureau of Standards OSI Implementor's Workshop, the Corporation
- for Open Systems, the Manufacturing and Automation Protocol (MAP)
- and Technical and Office Protocol (TOP) user's groups, the
- American National Standards Institute X3S3 and X3T5 committees,
- and the NATO Tri-Service Group on Communications and Electronic
- Equipment, Sub-Group 9 (Data Processing and Distribution).
-
- b. The Director, National Security Agency should assure that the
- efforts of the ongoing Secure Data Network Systems program can be
- used to provide the security extensions defined as future work
- items in GOSIP.
-
- c. The Services and defense agencies should share the results and
- experience of early implementations under the experimental
- coexistence policy by actively participating in the groups
- indicated above, under DCA coordination. This experience should
- be particularly valuable in assuring that military requirements
- can be satisfied by the developing OSI standards, specifications,
- and procedures.
-
- This guidance provides for the interim steps necessary to continue
- progress toward implementation of OSI standards. As the technology
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- Latham [Page 2]
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- RFC 1039 A DoD Statement on OSIP January 1988
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- matures and DoD gains additional experience, the final implementation
- details will be provided in a DoD Directive.
-
- References
-
- [1] Dinneen, Memorandum of Dec 78, IEN-152.
-
- [2] Dinneen, Memorandum of Apr 80, IEN-152.
-
- [3] DeLauer, Memorandum of Mar 82, IEN-207.
-
- [4] Latham, Memorandum of Apr 85, RFC-945.
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- Latham [Page 3]
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