本部分规定了以太网交换机的技术要求，包括功能指标、通信协议、通信接口、环境要求等。本部分中以太网交换机是指拥有以太网接口的局域网交换机，文中所有未指明的交换机均特指以太网交换机。

本部分适用于具有网管功能的在ISO的OSI 7层参考模型中第二层数据链路层上工作的以太网交换机。本部分不适用于无网管功能的在第三层或更高层工作的以太网交换机。-This section provides the technical requirements of Ethernet switch, including the function, communication protocol, communication interface, such as environmental requirements. Ethernet switch in this section refers to the LAN Ethernet interface has a switch, the text of all the switches are not specified in Ethernet switch reference. This section applies to have the ISO network management functions in the OSI 7 layer reference model data link layer The second layer of the Ethernet switch to work. This section does not apply to non-management functions in the third or higher Ethernet switch work.