ENA identifies and assigns a state to every managed network object. ENA groups these states, using color-coded icons to represent the state.
ENA uses a combination of methods to identify the object state:
- Devices and ports - ENA can use a combination of ICMP ping and SNMP polling to identify their current state. applicationMonitor manages ICMP ping as part of availability monitor root cause analysis. Administrators can configure applicationMonitor, e.g. to exclude a range of IP addresses from its monitoring.
- Note, if you attempt to exclude the management IP address of a Ping Only device from applicationMonitor, ENA ignores the setting and continues to manage the device through its IP address.
- Applications - ENA uses the response to a TCP connect request.
- Objects not polled directly but are part of a managed object (e.g. a power supply unit, fan) - object status is derived through SNMP polling of their managed object.