With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fgIntfEntry
fg Intf Entry
1.3.6.1.4.1.12356.101.7.2.1.1
Fortinet specific information about an ifEntry. This table augments the standard ifTable, so the same indexing is used.
Back to FORTINET-FORTIGATE-MIB MIB page.
IPHost Network monitor allows you to monitor fgIntfEntry on Fortinet device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Fortinet WAN extenders right now.