System Settings : Advanced : SNMP v1/v2c : Fortinet traps
 
Fortinet traps
Fortinet devices share SNMP traps, but each type of device also has traps specific to that device. For example FortiManager units have FortiManager specific SNMP traps. To receive Fortinet device SNMP traps, you must load and compile the FORTINET-CORE-MIB into your SNMP manager.
Traps sent include the trap message as well as the unit serial number (fnSysSerial) and hostname (sysName). The Trap Message column includes the message included with the trap as well as the SNMP MIB field name to help locate the information about the trap.
Table 2: Generic Fortinet traps 
Trap message
Description
ColdStart
WarmStart
LinkUp
LinkDown
Standard traps as described in RFC 1215.
Table 3: Fortinet system traps 
Trap message
Description
CPU usage high (fnTrapCpuThreshold)
CPU usage exceeds 80%. This threshold can be set in the CLI using config system global.
Memory low (fnTrapMemThreshold)
Memory usage exceeds 90%. This threshold can be set in the CLI using config system global.
Log disk too full
(fnTrapLogDiskThreshold)
Log disk usage has exceeded the configured threshold. Only available on devices with log disks.
Temperature too high
(fnTrapTempHigh)
A temperature sensor on the device has exceeded its threshold. Not all devices have thermal sensors. See manual for specifications.
Voltage outside acceptable range
(fnTrapVoltageOutOfRange)
Power levels have fluctuated outside of normal levels. Not all devices have voltage monitoring instrumentation.
Power supply failure
(fnTrapPowerSupplyFailure)
Power supply failure detected. Not available on all models. Available on some devices which support redundant power supplies.
Interface IP change
(fnTrapIpChange)
The IP address for an interface has changed.
The trap message includes the name of the interface, the new IP address and the serial number of the Fortinet unit. You can use this trap to track interface IP address changes for interfaces with dynamic IP addresses set using DHCP or PPPoE.
Table 4: FortiManager HA traps
Trap message
Description
HA switch
(fmTrapHASwitch)
FortiManager HA cluster has been re-arranged. A new master has been selected and asserted.