Use the vSphere CLI to list all multipathing modules loaded into the system. Multipathing modules manage physical paths that connect your host with storage.

To list all multipathing modules, run the following command:

esxcli corestorage plugin list --plugin-class=MP

At a minimum, this command returns the NMP and the MASK_PATH modules. If any third-party MPPs have been loaded, they are listed as well.