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******* Individual LLC address values *******
LLC address value organization Document
(applicable to SSAP responsible for references
and individual DSAP) the document
Hexadecimal/Binary
---------------------------------------------------------------
00 Z000 0000 ISO/IEC JTC1/SC6 ISO 8802-2 (1)
80 Z000 0001
through to -- Unreserved use
FC Z011 1111
02 Z100 0000.........ANSI...................IEEE 802.1B(2)
82 Z100 0001
42 Z100 0010.........ISO/IEC JTC1/SC6.......ISO/IEC 10038 (3)
C2 Z100 0011
22 Z100 0100
A2 Z100 0101
62 Z100 0110
E2 Z100 0111
12 Z100 1000
92 Z100 1001
52 Z100 1010
D2 Z100 1011
32 Z100 1100
B2 Z100 1101
72 Z100 1110
F2 Z100 1111
OA Z101 0000
8A Z101 0001
4A Z101 0010
CA Z101 0011
2A Z101 0100
AA Z101 0101.........IEEE...................IEEE 802 (4)
6A Z101 0110
EA Z101 0111
1A Z101 1000
9A Z101 1001
5A Z101 1010
DA Z101 1011
3A Z101 1100
BA Z101 1101
7A Z101 1110
FA Z101 1111
06 Z110 0000.........ANSI...................ARPANET/IP (5)
86 Z110 0001
46 Z110 0010
C6 Z110 0011
26 Z110 0100
A6 Z110 0101
66 Z110 0110
E6 Z110 0111
16 Z110 1000
96 Z110 1001
56 Z110 1010
D6 Z110 1011
36 Z110 1100
B6 Z110 1101
76 Z110 1110
F6 Z110 1111
OE Z111 0000.........IEC.....................IEC 955 (6)
8E Z111 0001.........IEC.....................IEC 955 (7)
4E Z111 0010.........ISO.....................ISO 9506 (8)
CE Z111 0011
2E Z111 0100
AE Z111 0101
6E Z111 0110
EE Z111 0111
1E Z111 1000
9E Z111 1001
5E Z111 1010
DE Z111 1011
3E Z111 1100
BE Z111 1101
7E Z111 1110.........ISO/IEC JTC 1/SC6.......ISO/IEC 8208 (9)
FE Z111 1111.........ISO/IEC JTC 1/SC6.......ISO/IEC TR 9577 (10)
Notes:
1) The bit marked 'Z' is the least significant bit and represents:
i) The command/response identifier bit in an SSAP field; or
ii) The address type designation bit (set to the value 'O" - individual)
in a DSAP field
2) LSAP values that are neither assigned nor identified for unreserved use are
reserved
The following numbered list provides additional information about each of the protocols in table 1. The numbers in the list correspond to the numbers in parenthesis shown in the document reference column.
1) Used in ISO/IEC 8802-2 as the Null Address 2) Used by IEEE 802.1B: IEEE Standard for LAN/MAN Management 3) Used in ISO/IEC 10038: Media Access Control (MAC) Bridges, to identify the Bridge Spanning Tree Protocol 4) Used in IEEE Std 802-1990: LAN/MAN Overview and Architecture of Network Standards, to identify the SNAP/SAP 5) Used in RFC 791: ARPANET/IP, Internet Protocol, DARPA Internet Program Protocol Specification, to identify the Internet Protocol 6) Used in IEC 955:1989, Process Data Highway, Type C (Proway C), for Distributed Process Control Systems to identify Network Management Maintenance and Initialization 7) Used in IEC 955:1989, Process Data Highway, Type C (Proway C), for Distributed Process Control Systems, to identify Active station list Maintenance 8) Used in ISO 9506:1990, Industrial Automation Systems - Manufacturing Message Specification- Part 1: Service Definition 1st Edition; Part 2: Protocol Specification 1st Edition, Part 3: Robot Specific Message Systems, to identify Manufacturing Message Service 9) Used to identify ISO 8208:1990, Information Processing Systems - Data Communication- X.25 packet layer protocol for data terminal equipment, as the Network Layer Protocol 10) Used to identify ISO/IEC TR 9577
The preceding table lists individual and group LLC address values. Other important references are:
03 to B3 hexadecimal/1100 0000 to 1111 1110 binary addresses are reserved for assignment by ISO/IEC JTC1/SC6. The meaning and use of the reserved Group LLC addresses are for further study.
01 to FD hexadecimal/ 1000 0000 to 1011 1111 addresses are unreserved; however LSAP values that are neither assinged nor identified for unreserved use are reserved.
Note that for the topic of group LLC address values, the leftmost bit in this table is the least significant bit and represents the address type designation bit (set to the value '1' - Group) in the DSAP field.
ISO/IEC Technical Report 10178 -- 1991 Information Technology -- Telecommunications and Information Exchange Between Systems -- The Structure and Coding of Logical Link Control adresses in Local Area Networks.
TR 10178 includes : a.) procedures for assignment of reserved addresses, b.) information on the format of Logical Link address, and c.) references to a definition of a mechanism to allow proprietary protocols to be identified when conveyed by LLC.
IEEE Std 8O2-1990. IEEE Standards for Local and Metropolitan Area Networks: Overview and Architecture.
This document serves as the foundation for the family of IEEE 8O2 Standards for local and metropolitan area networks. It contains descriptions of the networks considered as well as a reference model for protocol standards. Compliance with the family of IEEE 8O2 Standards is defined, and a standard for the identification of public, private, and standard protocols is included. Universal addresses and protocol identifiers are considered.
ISO 8802-2: 1989; IEEE Std 8O2.2-1989. Information processing systems Local area networks Part 2: Logical Link Control.
This standard is part of the family of local area network (LAN) standards dealing with the physical and data link layers as defined by the ISO Open Systems Interconnection Reference Model. It describes the functions, features, protocol, and services of the logical link control (LLC) sublayer, which constitutes the top sublayer in the data link layer of the ISO 8802 Local Area Network Protocol. The services required of, or by, the LLC sublayer at the logical interfaces with the network layer, the MAC sublayer, and the LLC sublayer management function are specified. The protocol data unit (PDU) structure for data communication systems is defined using bit-oriented procedures, as are two types of operation for data communication between service access points. In one type of operation, PDUs are exchanged between LLCs without the need for the establishment of a data link connection. In the other, a data link connection is established between two LLCs prior to any exchange of information-bearing PDUs.
There is a type 3, acknowledged connectionless amendment to this standard that has not completed its approval process but is available in draft form as 802.2b.
Availability--IEEE standards, including those adopted by ISO/IEC, as well as IEEE draft standards are available from IEEE 800/678-4333, outside the US & Canada, phone 1 + 908/981-1393. For non-IEEE documents, phone ANSI 212/642-4900 or Global Engineering 800/854-7179.
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