L2 + L3 Etherchannel

I have two 3850 switches connected to each other.

There is a layer 3 port channel and a layer 2 port channel created between SW1 and SW2. I am trying to understand why they setup a L2 and L3 on the switches…one for trunking and one for routing? Wouldn’t it be easier to keep it simple with one port channel and it would be layer 2 ? Is there a best practice ?

ROUTER ------SW1=======SW2

A post was merged into an existing topic: Layer 3 Etherchannel