Configuring The Physical Interfaces - Cisco Catalyst 3120 Software Manual

Chapter 37 Configuring EtherChannels and Link-State Tracking
Beginning in privileged EXEC mode, follow these steps to create a port-channel interface for a Layer 3
EtherChannel. This procedure is required.
Command
Step 1 configure terminal
Step 2
interface port-channel port-channel-number
Step 3
no switchport
Step 4 ip address ip-address mask
Step 5
end
Step 6
show etherchannel channel-group-number detail
Step 7
copy running-config startup-config
Step 8
To remove the port-channel, use the no interface port-channel port-channel-number global
configuration command.
This example shows how to create the logical port channel 5 and assign 172.10.20.10 as its IP address:
Switch# configure terminal
Switch(config)# interface port-channel 5
Switch(config-if)# no switchport
Switch(config-if)# ip address 172.10.20.10 255.255.255.0
Switch(config-if)# end

Configuring the Physical Interfaces

Beginning in privileged EXEC mode, follow these steps to assign an Ethernet port to a Layer 3
EtherChannel. This procedure is required.
Command
Step 1
configure terminal
Step 2 interface interface-id
Step 3 no ip address
Step 4
no switchport
OL-12247-01
Purpose
Enter global configuration mode.
Specify the port-channel logical interface, and enter interface
configuration mode.
For port-channel-number, the range is 1 to 48.
Put the interface into Layer 3 mode.
Assign an IP address and subnet mask to the EtherChannel.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Assign an Ethernet port to the Layer 3 EtherChannel. For
more information, see the
Interfaces" section on page
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 3120 for HP Software Configuration Guide
Configuring EtherChannels
"Configuring the Physical
37-15.
37-15