With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fnVpnIKETimeout
fn Vpn IKE Timeout
1.3.6.1.4.1.12356.4.1.2.1.22
the time before the next key exchange in seconds
Back to FORTINET-MIB MIB page.
IPHost Network monitor allows you to monitor fnVpnIKETimeout on Fortinet device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Fortinet switches right now.