A storage administrator is troubleshooting an ESXi host connected to a Cisco MDS fabric. The host's initiator successfully completes FLOGI and its zone with the target array is active, but the host cannot discover any LUNs presented by the target. On the MDS switch, the 'show fcns database' output lists both the initiator and target FC4 features, and 'show zone status' confirms the zone is fully activated in the correct VSAN. Which action should the administrator take NEXT to resolve the missing LUN visibility?