The ICMP probe determines whether a device is operational.

The SNMP probe uses the management, MIB-2, system information to determine the type of device. If the NAS Extension determines that the device is a Control Station, the Availability Manager launches the HTTPS Adapter probe. In addition, if the MIBs are included in the SNMP Agent of the device, the SNMP probe gathers containment information about the device’s interfaces and IP address.