FORTINET-MIB-280 :: fnSysCpuUsage

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsFORTINET-MIB-280fnSysCpuUsage

fnSysCpuUsage

Module: FORTINET-MIB-280

OID (symbolic): FORTINET-MIB-280::fnSysCpuUsage

OID (numeric): 1.3.6.1.4.1.12356.1.8

Node type: OBJECT-TYPE

Type: Gauge32

Access: read-only

Description: Instantaneous CPU usage

What is fnSysCpuUsage?

This is the instantaneous CPU usage percentage of the FortiGate device. Admins poll this to catch a unit under heavy load, for example during a DoS event or an AV/IPS scanning spike.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.12356.1.8
snmpwalk -v2c -c public <target> FORTINET-MIB-280::fnSysCpuUsage

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.12356.1.8.1
snmpget -v2c -c public <target> FORTINET-MIB-280::fnSysCpuUsage.1

Start monitoring Fortinet FortiGate security appliance (legacy firmware 2.80) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FORTINET-MIB-280::fnSysCpuUsage OID value, configure state conditions and alerts, and monitor any Fortinet FortiGate security appliance (legacy firmware 2.80) from a single console.

OID Breakdown

Upper-level ancestors (8 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.12356fortinetFORTINET-300-MIB
1.3.6.1.4.1.12356.1fnSystemFORTINET-300-MIB
Numeric OIDNameModule
1.3.6.1.4.1.12356.1.8fnSysCpuUsageFORTINET-MIB-280