The load balancing mechanism in physical switch and ESX server should match for teaming to be functional.
Open the corresponding virtual switch properties. Select the Vswitch and then click edit
Select the NIC teaming tab. Choose the appropriate load balancing mechanism from the drop down menu
If IP based load balancing is configured in switch , select the option “Route based on IP hash”
If MAC address based load balancing is configured in switch, select the aoption “Route based on MAC hash”
Configure rest of the options as shown below.Click ok