Configuring High Availability > Configuring Link Aggregation Control Protocol (LACP)
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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
switch: switch
enable: yes
system-priority: 32768
systemid:800640e942c007a