Configuring Port-Channel Interfaces
Configure Port-Channel Interfaces
Configure the LACP System Priority
Configure Port Channel Load Balancing
Configure the LACP System Identifier
Configure the LACP Port Identifier
Set the MTU Value on one or More Ports
Set the MTU Value of the Port Channel
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.
SEFOS# configure terminal SEFOS(config)# set port-channel enable SEFOS(config)# interface port-channel 1 SEFOS(config-if)# no shutdown SEFOS(config-if)# exit
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
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.
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.
After you configure the LACP port priority, port 0/2 is the standby port in both switches.