GS-4210-Series (V2) User Manual

User’s Manual of GS-4210 Series
123
The Link Aggregation Control Protocol (LACP) provides a standardized means for exchanging information between Partner
Systems that require high-speed redundant links. Link aggregation lets you group up to eight consecutive ports into a single
dedicated connection. This feature can expand bandwidth to a device on the network. LACP operation requires full-duplex
mode. For more detailed information, refer to the IEEE 802.3ad standard.
Port link aggregations can be used to increase the bandwidth of a network connection or to ensure fault recovery. Link
aggregation lets you group up to 8 consecutive ports into a single dedicated connection between any two the Switch or other
Layer 2 switches. However, before making any physical connections between devices, use the Link Aggregation Configuration
menu to specify the link aggregation on the devices at both ends. When using a port link aggregation, note that:
• The ports used in a link aggregation must all be of the same media type (RJ45, 100 Mbps fiber).
• The ports that can be assigned to the same link aggregation have certain other restrictions (see below).
• Ports can only be assigned to one link aggregation.
• The ports at both ends of a connection must be configured as link aggregation ports.
• None of the ports in a link aggregation can be configured as a mirror source port or a mirror target port.
• All of the ports in a link aggregation have to be treated as a whole when moved from/to, added or deleted from a VLAN.
• The Spanning Tree Protocol will treat all the ports in a link aggregation as a whole.
• Enable the link aggregation prior to connecting any cable between the switches to avoid creating a data loop.
• Disconnect all link aggregation port cables or disable the link aggregation ports before removing a port link aggregation to
avoid creating a data loop.
It allows a maximum of 8 ports to be aggregated at the same time. The Managed Switch supports Gigabit Ethernet ports (up to 8
groups). If the group is defined as an LACP static link aggregation group, then any extra ports selected are placed in a standby
mode for redundancy if one of the other ports fails. If the group is defined as a local static link aggregation group, then the
number of ports must be the same as the group member ports.
Use the Link Aggregation Menu to display or configure the Trunk function. This section has the following items:
 LAG Setting Configures load balance algorithm configuration settings
 LAG Management Configures LAG configuration settings
 LAG Port Setting Configures LAG port settings
 LACP Setting Configures LACP priority settings
 LACP Port Setting Configure LACP configuration settings
 LAG Status Display LAG status / LACP information