Implementing Cisco IP Switched Networks (SWITCH v2-0) (#532)

A network engineer must set the load balance method on an existing port channel. Which action must be done to apply a new load balancing method?

Configure the new load balancing method using port-channel load-balance.
Adjust the switch SDM back to “default”.
Ensure that IP CEF is enabled globally to support all load balancing methods.
Upgrade the PFC to support the latest load balancing methods.