• DNS Forward Lookup (assumes device/id is a resolvable name)

    host ${device/id}
  • DNS Reverse Lookup

    host ${device/manageIp}
  • SNMP Walk

    snmpwalk -v 2c -c${device/zSnmpCommunity} ${device/manageIp} system

To use these expressions effectively, you must know which objects, attributes, and methods are available, and in which contexts. Usually there is a device that allows you to access the device in a particular context. Contexts related to a particular event usually have event defined.