Link aggregation allows administrators to assign multiple physical links to one logical link that functions as a single, higher-speed link providing dramatically increased bandwidth.
Create and configure the LAG interface:
interface port-channel 10
no shutdown
Associate member links with the LAG interface:
interface IFACE`
interface ethernet 1/1/1
channel-group 10
To enable LACP on the LAG:
interface ethernet 1/1/1
switch(conf-if-eth1/1/1)#channel-group 10 mode active
Show commands to validate functionality:
show interface port-channel