Cisco Systems 3750E manual Configuring the Physical Interfaces, No ip address, 37-16

Chapter 37 Configuring EtherChannels and Link-State Tracking

Configuring EtherChannels

Beginning in privileged EXEC mode, follow these steps to create a port-channel interface for a Layer 3 EtherChannel. This procedure is required.

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	interface port-channel port-channel-number	Specify the port-channel logical interface, and enter interface
		configuration mode.
		For port-channel-number, the range is 1 to 48.
Step 3
	no switchport	Put the interface into Layer 3 mode.
Step 4
	ip address ip-address mask	Assign an IP address and subnet mask to the EtherChannel.
Step 5
	end	Return to privileged EXEC mode.
Step 6
	show etherchannel channel-group-numberdetail	Verify your entries.
Step 7
	copy running-config startup-config	(Optional) Save your entries in the configuration file.
Step 8
		Assign an Ethernet port to the Layer 3 EtherChannel. For
		more information, see the “Configuring the Physical
		Interfaces” section on page 37-16.

To remove the port-channel, use the no interface port-channelport-channel-numberglobal 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	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	interface interface-id	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.
Step 3
	no ip address	Ensure that there is no IP address assigned to the physical port.
Step 4
	no switchport	Put the port into Layer 3 mode.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
37-16	OL-9775-02