This standard specifies the testing methods for Ethernet switches, including functional testing, performance testing, protocol testing, and routine testing. In this standard, Ethernet switches refer to LAN switches with Ethernet interfaces, and all unspecified switches in the following text specifically refer to Ethernet switches. This standard applies to Ethernet switches operating on the second layer data link layer in the ISO OSI7 layer reference model. Ethernet switches operating on the third or higher layer are not within the scope of this standard. This standard applies to manageable network devices, and unmanaged devices are not within the scope of this standard. Ethernet switches specifically used for access should also comply with YD/T 1240-2002 "Test Methods for Access Network Equipment - Broadband Access Network Equipment Based on Ethernet Technology". 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated references, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, it is encouraged for all parties who have reached agreements based on this standard to investigate whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. ISO/IEC 9314-3 (1990) Information processing systems - Fiber optic distribution data interfaces - Part 3: Physical layer media related IETF RFC1573 (1994) interface group management information library IETF RFC1650 (1994) class Ethernet interface type management object definition IETF RFC2021 (1997) remote network monitoring management information library version 2 IETF RFC2613 (1999) remote network monitoring management MIB extension version 1 ANSI X3.166 (1990) Information systems - Fiber optic distributed data interfaces - Token ring physical layer media related IEEE802.1D (2004) Media access control (MAC) bridges IEEE 802.1Q (2003) Virtual bridging local area networks IEEE 802.1X (2004) Port based network access control specifications IEEE 802.3ae (2002) 10Gbit/s interface options - MAC parameters, physical layer parameters, and management parameters - Amendment IEEE802.3 (2000) Carrier monitoring multiple access methods with collision detection and physical layer definitions -3 terms Definitions and Abbreviations 3.1 Terms and Definitions The following terms and definitions apply to this standard. 1) Bridge: The bridge works on the MAC sublayer of the second layer data link layer in the ISO OSI7 layer reference model, and achieves network interconnection by forwarding MAC frames. The implementation of the bridge should comply with EEE 802.1D (2004). Bridges can connect networks of the same or different MAC technologies. Make intelligent forwarding decisions using destination and source address information contained in MAC frames. When connecting to Ethernet, the bridge can not only expand the physical network topology, but also isolate subnets on ports into independent conflict domains