ISO/IEC 15802-3-1998 信息技术 系统间远程通信和信息交换 局域网和城域网 通用规范 第3部分:媒体访问控制(MAC)网桥

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标准号:ISO/IEC 15802-3-1998
中文标准名称:信息技术 系统间远程通信和信息交换 局域网和城域网 通用规范 第3部分:媒体访问控制(MAC)网桥
英文标准名称:Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Common specifications - Part 3: Media Access Control (MAC) Bridges
标准类型:M11
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:M11
国际标准分类号:35.110
适用范围:For the purpose of compatible interconnection of data processing equipment using the IEEE 802 MAC Ser-vice supported by interconnected IEEE 802 LANs (see 3.4) using different or identical Media Access Con-trol methods, this standard specifies a general method for the operation of MAC Bridges. To this end it a) Positions the bridging function within an architectural description of the MAC Sublayer. b) Defines the principles of operation of the MAC Bridge in terms of the support and preservation of the MAC Service, and the maintenance of Quality of Service. c) Specifies the MAC Internal Sublayer Service provided by individual LANs to the Media Access Method Independent Functions that provide frame relay in the Bridge. d) Identifies the functions to be performed by Bridges, and provides an architectural model of the inter-nal operation of a Bridge in terms of Processes and Entities that provide those functions. e) Establishes the requirements for a protocol between the Bridges in a Bridged LAN to configure the network, and specifies the distributed computation of a Spanning Tree active topology. f) Specifies the encoding of the Bridge Protocol Data Units (BPDUs). g) Establishes the requirements for Bridge Management in the Bridged LAN, identifying the managed objects and defining the management operations. h) Specifies how the management operations are made available to a remote manager using the proto-col and architectural description provided by ISO/IEC 15802-2: 1995. i) Specifies performance requirements and recommends default values and applicable ranges for the operational parameters of a Bridge. j) Specifies the requirements to be satisfied by equipment claiming conformance to this standard. k) Specifies criteria for the use of MAC-specific bridging methods. This standard specifies the operation of MAC Bridges that attach directly to IEEE 802 LANs, as specified in the relevant MAC standards for the MAC technology or technologies implemented. The specification of Remote Bridges, which interconnect LANs using Wide Area Network (WAN) media for the transmission of frames between Bridges, is outside the scope of this standard. NOTE—Remote MAC Bridging is specified in ISO/IEC 15802-5: 1997 [ANSI/IEEE Std 802.1G, 1997 Edition].

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