This interface is used to patch upgrades for the NSX Advanced Load Balancer Controller. What to read next Patch Upgrade Using UIPatch Upgrade involves uploading the patch image for the controller and service engines. Using the CLIUse the upgrade controller image_ref <image name> controller_patch_ref <Controller patch image command to upgrade the NSX Advanced Load Balancer Controller with a patch. Using the REST APIThis section describes the using NSX Advanced Load Balancer REST API. Parent topic: Patch Guide