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  ITU-T A.5 justification information for referenced document IEEE 802.1D-2004 in draft G.8261/Y.1361
1. Clear description of the referenced document:
Name: IEEE 802.1D-2004
Title: IEEE Standard for local and metropolitan area networks - Media Access Control (MAC) Bridges
2. Status of approval:
In force
3. Justification for the specific reference:
This specification has been developed by the IEEE and is used by the ITU-T without change. G.8261 defines timing aspects in packet networks, with particular focus on Ethernet networks. IEEE 802.1D specifies the bridging aspects for Ethernet networks.
4. Current information, if any, about IPR issues:
Information on IEEE standards can be found at http://standards.ieee.org/db/patents/index.html
5. Other useful information describing the "Quality" of the document:
The document is in existence, in previous versions, from 1993. It is very widely used technology
6. The degree of stability or maturity of the document:
It is an approved IEEE standard. The 2004 revision was published on June 2004.
7. Relationship with other existing or emerging documents:
This specification is related to the 802.1 suite of standards developed by the IEEE. IEEE 802 Local Area Networks (or LANs; see 3.4) of all types can be connected together using MAC Bridges. The Bridged Local Area Network created allows the interconnection of stations as if they were attached to a single LAN, even if they are attached to separate LANs each with its own independent MAC. A MAC Bridge operates below the MAC Service Boundary, and is transparent to protocols operating above this boundary, in the Logical Link Control (LLC) sublayer or Network Layer (ISO/IEC 7498-1: 19941). The presence of one or more MAC Bridges can lead to differences in the Quality of Service (QoS) provided by the MAC sublayer; it is only because of such differences that MAC Bridge operation is not fully transparent.
8. Any explicit references within that referenced document should also be listed:
[1] ANSI X3.159-1989, American National Standards for Information Systems-Programming Language-C.2/
[2] IEEE Std 802®-2001, IEEE Standard for Local and Metropolitan Area Networks: Overview and Architecture.3/
[3] IEEE Std 802.1H™, 1997 Edition [ISO/IEC 11802-5: 1997], Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Technical reports and guidelines-Part 5: Media Access Control (MAC) Bridging of Ethernet V2.0 in Local Area Networks.4/
[4] IEEE Std 802.1Q™-2003, IEEE Standards for Local and Metropolitan Area Networks: Virtual Bridged Local Area Networks./
[5] IEEE Std 802.1X™-2001, IEEE Standards for Local and Metropolitan Area Networks-Port Based Network Access Control./
[6] IEEE Std 802.2™, 1998 Edition [ISO/IEC 8802-2: 1998], Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements-Part 2: Logical link control.5/
[7] IEEE Std 802.3™-2002, IEEE Standard for Local and Metropolitan Area Networks, Supplement to Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications: Aggregation of Multiple Link Segments./
[8] IEEE Std 802.5, 1998 Edition [ISO/IEC 8802-5: 1998], Information technology Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements- Part 5: Token ring access method and physical layer specifications./
[9] IEEE Std 802.11, 1999 Edition [ISO/IEC 8802-11: 1999], Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications/
[10] IETF RFC 2236, Fenner, Internet Group Management Protocol (IGMP), Version 2, November 1975.6/
[11] IETF RFC 1493, Decker, Langille, Rijsinghani and McCloughrie, Definitions of Managed Objects for Bridges, July 1993./
/
[12] IETF RFC 2233, The Interfaces Group MIB using SMIv2, McCloghrie, K., Kastenholz, F., November 1997/
[13] IETF RFC 2674, Bell, Smith, Langille, Rijsinghani, McCloghrie, Definitions of Managed Objects for Bridges with Traffic Classes, Multicast Filtering and Virtual LAN Extensions, August 1999./
[14] ISO/IEC 7498-1: 1994, Information processing systems-Open Systems Interconnection-Basic Reference Model-Part 1: The Basic Model.7/
[14] ISO/IEC 8824-1: 2002, Information technology-Abstract Syntax Notation One (ASN.1): Specification of basic notation./
[15] ISO/IEC 8825-1: 2002, Information technology-ASN.1 encoding rules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER)./
[16] ISO/IEC 9595: 1998, Information technology-Open Systems Interconnection-Common management information service./
[17] ISO 9314-2: 1989, Information processing systems-Fibre Distributed Data Interface (FDDI)-Part 2: Token Ring Media Access Control (MAC)./
[18] ISO/IEC 9596-1: 1998, Information technology-Open Systems Interconnection-Common management information protocol-Part 1: Specification./
[19] ISO/IEC TR 11802-1: 1997, Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Technical reports and guidelines-Part 1: The structure and coding of Logical Link Control addresses in Local Area Networks./
[20] ISO/IEC TR 11802-2: 2002, Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Technical reports and guidelines-Part 2: Standard Group MAC addresses./
[21] ISO/IEC 14882: 2003, Information Technology-Programming languages-C++./
[22] ISO/IEC 15802-1: 1995, Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Common specifications-Part 1: Medium Access Control (MAC) service definition.
9. Qualification of IEEE:
The IEEE was recognized under the provisions of ITU-T Recommendation A.5 on 1 November 1999. Qualifying information is on file with TSB.
10. Other (for any supplementary information):
All standards are available on-line. See http://www.ieee802.org/.
Note: This form is based on Recommendation ITU-T A.5