Poll definition types
Each poll definition is based on a poll definition type. Poll definition types can be grouped according to the polling mechanism that they use.
Based on the polling mechanisms, the poll definition type restricts the scope of the poll operation in which it is used.
Ping polling mechanism
The ping polling mechanism has the following poll definition types:
- Chassis ping
- Used for pinging the management interface of a network device or the main interface of an end-node.
- Interface ping
- Used for ping operations on interfaces within devices. An interface ping poll definition has optional interface-level filtering.
SNMP polling mechanism
The SNMP polling mechanism has the following poll definition types:
- Generic threshold
- Used for setting formulas to apply against MIB variables. A generic
threshold poll definition consists of the following thresholds:
- Trigger threshold
- Required: An event is generated when the value of the MIB variable or variables exceeds the threshold.
- Clear threshold
- Optional: A Clear event is generated when the value of the MIB variable falls below the threshold.
- Basic threshold
-
Use a basic threshold to collect poll data for a single MIB variable or expression. You can present the data collected in reports or display it in MIB graphs. An event is generated when the trigger threshold condition defined in the poll definition is met, and is cleared when the clear threshold condition is met.
Basic Threshold polls can support dynamic indexing: polling a specific
OID, that is, only one particular row of a table. - SNMP Link state
- Used for checking the administrative and operational status. An SNMP link state poll definition has optional interface-level filtering.
- Cisco remote ping
- Used for checking the availability of devices by using Cisco-specific MIBs.
- Juniper remote ping
- For checking the availability of devices by using Juniper-specific MIBs.