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 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 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 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 command:


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


switch:

switch

enable:

yes

system-priority:

32768

systemid:

800640e942c007a

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