Link Aggregation Control Protocol (LACP)

A dynamic LAG is LACP-enabled, and LACP is run on every candidate port defined in the LAG. LACP system priority and LACP port priority are both used to determine which of the candidate ports become active member ports in a dynamic LAG configured with more than eight candidate ports.

Use the LACP page to configure the candidate ports for the LAG and to configure the LACP parameters per port. With all factors equal, when the LAG is configured with more candidate ports than the maximum number of active ports allowed (8), the device selects ports as active from the dynamic LAG on the device that has the highest priority.

Note

The LACP setting is irrelevant on ports that are not members of a dynamic LAG.

To define the LACP settings, complete the following steps:

Procedure

Step 1

Click Port Management > Link Aggregation > LACP.

Step 2

If needed, edit the LACP System Priority and click Apply.

Step 3

To edit an existing port, select the port, and click Edit.

Step 4

In the Edit LACP Settings dialog box, enter the values for the following fields:

  • Port—Select the port number to which timeout and priority values are assigned.

  • LACP Port Priority—Enter the LACP priority value for the port.

  • LACP Timeout—Time interval between the sending and receiving of consecutive LACP PDUs. Select the periodic transmissions of LACP PDUs, which occur at either a Long or Short transmission speed, depending upon the expressed LACP timeout preference.

Step 5

Click Apply. The Running Configuration file is updated.