port channel trunk

[Mary]

I want to build a  etherchannel 3 for int g1/1 and g1/2, g1/1 is connected to ucs. so int po3 configuration, I should use

 switchport  access vlan 111 or switch trunk allowed vlan 111 assuming vlan 111 is created for UCS

or should i use L3 port channel and define ip address, when should we use L3 channel?

[Jon Marshall]

If you only need a single vlan on the etherchannel then do that. If you need multiple vlans across the etherchannel then use a trunk.

A L3 etherchannel is used when there are L3 devices at either end of the etherchannel. They are not used to extend vlans between devices.

Jon

[Mary]

L3 devices means router only?

[Jon Marshall]

No, it can mean a L3 switch or any L3 capable device.

Jon