Layer 2 vs Layer 3 Port Channel Interface
Port channel interfaces can be classified into L2 port-Channel and L3 Port-channel Interfaces.
L2 Port-channel Interfaces can be either:
- Trunk
- Access
L3 Port-channel Interfaces can be either:
- Routed ports
- Sub-interfaces
Basic configuration
Please refer to the following posts for Port-channel configuration on IOS and NXOS:
Example of Layer 2 Port-channel configuration
Switch(config)#interface range ethernet 1/2-3
Switch(config-if-range)#no switchport
Switch(config-if-range)#channel-group 1 mode active
Switch(config-if-range)#interface port-channel 1
Switch(config-if)# switchport
Switch(config-if)# switchport mode trunk
Switch(config-if)# switchport trunk allowed vlan 15-20
Example of Layer 3 Port-channel configuration
Switch(config)#interface range ethernet 1/2-3
Switch(config-if-range)#no switchport
Switch(config-if-range)#channel-group 1 mode active
Switch(config-if-range)#interface port-channel 1
Switch(config-if)#no switchport
Switch(config-if)#ip address 10.50.1.1 255.255.255.252
For more deep dive, please refer to:
