Configuring Link Aggregation Control Protocol (LACP)

The Link Aggregation Control Protocol (LACP) is a dynamic LAG protocol that is controlled by user configuration. The negotiation process and the addition/removal of ports is controlled by parameters like LACP mode (active, passive and off) and LACP priorities.

To dynamically bring up a trunk the ports on at least one of the two peer LACP switches must be set to active mode.

For example use the following command to dynamically bundle ports 20-23:

CLI (network-admin@switch) > trunk-create name trunk23 ports 20-23 lacp-mode active

To modify the mode of a trunk running LACP, use the following command:

CLI (network-admin@switch) > trunk-modify name trunk23 lacp-mode passive

To modify a port configuration with a non default LACP priority, use the following command:

CLI (network-admin@switch) > port-config-modify port 33 lacp-priority 34

To enable or disable LACP on a switch, and/or to change the default system priority value, you can use the following command:

CLI (network-admin@switch) > lacp-modify enable|disable system-priority priority

The default system-priority value is 32768 with a range of 1 to 65535.

To display LACP information, use the following command:

CLI (network-admin@switch) > lacp-show