Cisco WS-C3020 Software Configuration Manual page 725

Chapter 33 Configuring EtherChannels and Layer 2 Trunk Failover
Command
Step 1
configure terminal
Step 2 interface interface-id
Step 3 no ip address
Step 4
no switchport
OL-8915-03
Purpose
Enter global configuration mode.
Specify a physical port, and enter interface configuration mode.
Valid interfaces include physical ports.
For a PAgP EtherChannel, you can configure up to eight ports of
the same type and speed for the same group.
For a LACP EtherChannel, you can configure up to 16 Ethernet
ports of the same type. Up to eight ports can be active, and up to
eight ports can be in standby mode.
Ensure that there is no IP address assigned to the physical port.
Put the port into Layer 3 mode.
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
Configuring EtherChannels
33-13