ZyXEL NetAtlas User Guide - Page 172

Chapter 14 Switch Configuration Table 81 Switch Configuration > Queue Method (continued) LABEL DESCRIPTION Copy to... Click the Copy to.. button to copy the configuration from the device that you are currently configuring to the port(s) on the same device or the port(s) on other device(s) of the same model. Close Click Close to exit this screen. 14.3 Link Aggregation Link aggregation (trunking) is the grouping of physical ports into one logical higher-capacity link. You may want to trunk ports if for example, it is cheaper to use multiple lower-speed links than to under-utilize a high-speed, but more costly, single-port link. However, the more ports you aggregate then the fewer available ports you have. A link aggregation group is one logical link containing multiple ports. The first port must be physically connected when forming a trunk group. 14.3.1 Dynamic Link Aggregation This feature is not available on all models. The switch adheres to the IEEE 802.3ad standard for static and dynamic (LACP) port trunking. The IEEE 802.3ad standard describes the Link Aggregate Control Protocol (LACP) for dynamically creating and managing trunk groups. When you enable LACP link aggregation on a port, the port can automatically negotiate with the ports at the remote end of a link to establish trunk groups. LACP also allows port redundancy, that is, if an operational port fails, then one of the "standby" ports become operational without user intervention. Please note that: • You must connect all ports point-to-point to the same Ethernet switch and configure the ports for LACP trunking. • LACP only works on full-duplex links. • All ports in the same trunk group must have the same media type, speed, duplex mode and flow control settings. Configure trunk groups or LACP before you connect the Ethernet switch to avoid causing network topology loops. 172 NetAtlas EPON Manager User's Guide