EtherChannel
From Tech-Wiki
The command below allows to create a Port Aggregation on Cisco devices (EtherChannel)
Switch1# configure terminal Switch1(config)# interface range FastEthernet0/11 - 12 Switch1(config-if-range)# switchport mode access Switch1(config-if-range)# switchport access vlan 10 Switch1(config-if-range)# channel-group 5 mode desirable