Cisco Catalyst 4500 Series - Configuring Auto-LAG on a Port Interface

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 27 Configuring EtherChannel and Link State Tracking
Configuring EtherChannel
Configuring Auto-LAG on a Port Interface
To configure auto-LAG globally, perform this task:
Configuring Persistence with Auto-LAG
To convert the automatically created EtherChannel back to a manual one, perform this task:
Configuring EtherChannel Load Balancing
Note Load balancing can only be configured globally. As a result, all channels (manually configured, PagP,
or LACP) use the same load-balancing method.
Command Purpose
Step 1
Switch(config)# port-channel auto
Configures auto-LAG globally on the device.
Step 2
Switch(config)# end
Exits configuration mode.
Step 3
Switch# show etherchannel auto
Displays the EtherChannel created automatically.
Command Purpose
Step 1
Switch(config)# interface interface-id
Specifies the port interface to be enabled for auto-LAG,
and enters interface configuration mode.
Step 2
Switch(config-if)# channel-group auto
(Optional) Enables auto-LAG feature on individual port
interface.
By default, the auto-LAG feature is enabled on the port.
Step 3
Switch(config)# end
Exits configuration mode.
Step 4
Switch# show etherchannel auto
Displays the EtherChannel created automatically.
Command Purpose
Step 1
Switch# port-channel channel-number persistent
Specifies the port interface to be enabled for auto-LAG,
and enters interface configuration mode.
Step 2
Switch(config-if)# channel-group auto
Converts the auto created EtherChannel into a manual
one and allows you to add configuration on the
EtherChannel.
Step 3
Switch(config)# end
Exits configuration mode.
Step 4
Switch# show etherchannel summary
Displays EtherChannel information.