CAN/CSA-ISO/IEC-9577-95 (R1999)

The international community has decided to make this standard available only in the English language version. It has been adopted as a National Standard of Canada on this basis. This National Standard of Canada is equivalent to International Standard ISO/IEC TR 9577:1993. 1 Scope This Technical Report provides a) the description of a means to permit a protocol to be identified; b) a record of the structure and allowable ranges of protocol identifier(s) which can be assigned by ISO/IEC JTC1 SC6, CCITT and other authorities; c) a record of the values of protocol identifiers used by OSI Network Layer protocols and non-OSI protocols occupying a similar position, in particular, only protocols with protocol control information commencing in octet 1 of the protocol data unit are covered; and d) a record of the values that are in use as protocol control information in non-Network Layer protocols where they impact on Network Layer protocol identification. The application is this Technical Report is a) in the identification of internationally standardized Network Layer protocols operating directly above the Data Link Service; b) in the identification of protocols used in conjunction with internationally standardized Network Layer protocols that operate directly above the Data Link Service; and c) to distinguish between Internationally standardized Network Layer protocols, and other internationally standardized protocols used in conjunction with internationally standardized Network Layer protocols. This Technical Report is for use by ISO/IEC Technical Committees and other authorities in applying the principles contained in clause 4, and in selecting an unused value or values from the range of values permitted in clause 5 or clause 6, as appropriate. When a new value is selected, that value and its usage should be brought to the attention of ISO/IEC JTC 1 SC6 so that this Technical Report can be amended.