With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fnVpnRemoteGWDeadPeerDet
fn Vpn Remote GW Dead Peer Det
1.3.6.1.4.1.12356.4.1.4.1.28
Turn on/off dead peer detection
Back to FORTINET-MIB MIB page.
IPHost Network monitor allows you to monitor fnVpnRemoteGWDeadPeerDet on Fortinet device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Fortinet access points right now.