With IPHost Network Monitor you can run simple snmp requests against a F5 Network device in your network.
lbRouterIfAliveTime
lb Router If Alive Time
1.3.6.1.4.1.3375.1.2.1.1.3.2.1.8
The most recent date and time when the interface was known to be running.
Back to F5-3DNS-MIB MIB page.
IPHost Network monitor allows you to monitor lbRouterIfAliveTime on F5 Network device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring F5 Network switches right now.