(Optional) Configuring the Link Aggregation Control Protocol System Priority You can configure the system priority for all the EtherChannels that are enabled for LACP by using the lacp system-priority command in global configuration mode. You cannot configure a system priority for each LACP-configured channel. By changing this value from the default, you can affect how the software selects active and standby links. You can use the show etherchannel summary command in privileged EXEC mode to see which ports are in the hot-standby mode (denoted with an H port-state flag). Follow these steps to configure the LACP system priority.
Procedure Configuring EtherChannels (Optional) Configuring the Link Aggregation Control Protocol System Priority Command or Action Purpose Example: Device> enable Enter your password if prompted. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. Step 3 interface port-channel channel-number Example: Device(config)# interface port-channel 2 Enters interface configuration mode for a port-channel. For channel-number, the range is 1 to 128. Step 4 port-channel min-links min-links-number Example:
Device(config-if)# port-channel min-links 3 Specifies the minimum number of member ports that must be in the link-up state and bundled in the EtherChannel for the port channel interface to transition to the link-up state. For min-links-number, the range is 2 to 8. Step 5 end Example: Device(config)# end Returns to privileged EXEC mode. Command or Action Purpose Step 1 enable Example: Device> enable Enables privileged EXEC mode. Enter your password if prompted. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. Step 3 lacp system-priority priority Configures the LACP system priority. Configuring EtherChannels 24