Configure the LACP Port Priority

In the following example, all of the ports in both switches are configured to belong to port channel 1. Ports 0/1, 0/2, and 0/3 are part of the LA. You must run all of the commands in this procedure on both switches.

1. Enable port channeling, and create the port channel (1 in this example).

   SEFOS# configure terminal
   SEFOS(config)# set port-channel enable
   SEFOS(config)# interface port-channel 1
   SEFOS(config-if)# no shutdown
   SEFOS(config-if)# exit

2. Configure the physical ports, and set the mode for each of the interfaces.

   SEFOS(config)# interface extreme-ethernet 0/1
   SEFOS(config-if)# no shutdown
   SEFOS(config-if)# channel-group 1 mode active
   SEFOS(config-if)# exit
   SEFOS(config)# interface extreme-ethernet 0/2
   SEFOS(config-if)# no shutdown
   SEFOS(config-if)# channel-group 1 mode active
   SEFOS(config-if)# exit
   SEFOS(config)# interface extreme-ethernet 0/3
   SEFOS(config-if)# no shutdown
   SEFOS(config-if)# channel-group 1 mode active
   SEFOS(config-if)# exit
   SEFOS(config-if)# end

3. Review the etherchannel information in both switches to ensure that the channel group settings have been changed.

   The output has been truncated for readability. The output should be the same in both switches.

   SEFOS# show etherchannel 1 detail
    
   ...
   -------------
   Port State = Up in Bundle
   Channel Group : 1
   Mode : Active
   Pseudo port-channel = Po1
   LACP port-priority  = 128
   LACP Wait-time  = 2 secs
   ...
   -------------
   Port State = Hot standby
   Channel Group : 1
   Mode : Active
   Pseudo port-channel = Po1
   LACP port-priority  = 128
   LACP Wait-time  = 2 secs

   ---

   Note - Before configuring the LACP port priority, consider that the extreme-ethernet port, 0/3, is the standby port in switches A and B. The maximum number of ports in the port channel is 2.

   ---

4. On switch A, configure the LACP port priority for port 0/3.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/3
   SEFOS(config-if)# lacp port-priority 20
   SEFOS(config-if)# end

   The possible range of values is from 0-65535. The lower the value, the more likely that the interface will be used for LACP transmission.

5. Type the show command to review the etherchannel information to ensure that the port 0/3 information was added to the etherchannel report.

   After you configure the LACP port priority, port 0/2 is the standby port in both switches.