Cisco 4500M Command Reference Manual page 47

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Any configuration or attribute changes you make to the port-channel interface are propagated to all
interfaces within the same channel group as the port channel (for example, configuration changes are
also propagated to the physical interfaces that are not part of the port channel, but are part of the channel
group).
You can create in on mode a usable EtherChannel by connecting two port groups together.
Caution
Do not enable Layer3 addresses on the physical EtherChannel interfaces. Do not assign bridge groups
on the physical EtherChannel interfaces because it creates loops.
Examples
This example shows how to add Gigabit Ethernet interface 1/1 to the EtherChannel group specified by
port channel 45:
Switch(config-if)# channel-group 45 mode on
Creating a port-channel interface Port-channel45
Switch(config-if)#
Related Commands
interface port-channel
show interfaces port-channel (refer to Cisco IOS documentation)
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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
channel-group
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