Enabling LACP between two switches (Port Channels)

This configuration needs to be done on both switches. In this example, we making GigabitEthernet0/1 and 0/2 into a port channel. 

Switch(config)#inter ran gi0/1-2
Switch(config-if-range)#channel-group 1 mode active
Switch(config-if-range)#
Creating a port-channel interface Port-channel 1
%LINK-5-CHANGED: Interface GigabitEthernet0/2, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/2, changed state to up
%LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up
%LINK-5-CHANGED: Interface Port-channel1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up

It's that easy. 

You can then configure the new Port-Channel interface to be a trunk port and to carry encapsulated traffic (VLans).  

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