Each VSAN contains a default zone, which by default, contains all connected devices assigned to the VSAN.
You can change the default zone policy for any VSAN by choosing VSANxxx > Default Zone from the Fabric Manager menu tree and clicking the Policies tab. However, we recommend that you establish connectivity among devices by assigning them to a nondefault zone.
The active zone set is shown in italic type. After you have made changes to the active zone set and before you activate the changes, the zone set is shown in boldface italic type. The tooltip for each zone indicates the activation time or modification time.