FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article explains how FortiGate performs SNMP queries to check disk usage and capacity.
Scope
FortiGate SNMP.
Solution
The Fortigate MIB file comes with Disk Usage and Capacity OID numbers:
fgSysDiskCapacity 1.3.6.1.4.1.12356.101.4.1.7
fgSysDiskUsage 1.3.6.1.4.1.12356.101.4.1.6
The SNMP response to the above query:
-----SNMP query started----- 1: fgSysDiskUsage.0 138 -> 138MB is total usage
-----SNMP query started----- 1: fgSysDiskCapacity.0 16125 -> 16125MB is total disk space
Run the command 'dia sys logdisk usage' to check the total HD usage:
dia sys logdisk usage Total HD usage: 144MB(138MiB)/16908MB(16125MiB) -> 16125MB is total disk space | 138MB is total usage Total HD logging space: 12680MB(12093MiB) -> Total free space on log disk HD logging space usage for vdom "root": 5MB(5MiB)/12680MB(12093MiB) -> Used space on log disk
Note:
The total HD logging space is 12680MB(12.68GB). This is because FortiGate is using by design only 75% of the disk.
