before or after Port-Channel?

[JoshGarmonCiscoCCNA]

should you configure trunking, native vlan, etc... before or after EtherChannel is established?

do you configure this on the Port-Channel or the switch's physical ports?

just did a Lab, and i got some weird native vlan mismatch on my physical trunking ports between two switches then i configured the native vlan on the actual port-channels themselves and probably made it worse

[Julio E. Moisa · Accepted solution]

Hi Josh,

You can configure the channel-group <group id> mode <mode type> only, on the interfaces that will be part of the Etherchannel.

Once it is configured on both devices you can configure the rest of the configuration under the interface port channel.

interface po <group id>
switchport trunk encapsulation dot1q     <--- configure if it is required. 
switchport mode trunk
switchport trunk native vlan <vlan id>    <--- configure if it is required. Native vlan must be the same on both ends. Note, a good practice is create a vlan for native vlan, the vlan 1 should be shutdown. 

the interface portchannel will replicate the config to its interfaces. 

To verify the proper functionability you can execute: show etherchannel summary

:-)