With IPHost Network Monitor you can run simple snmp requests against a F5 Network device in your network.
lbRouterVServRefreshes
lb Router V Serv Refreshes
1.3.6.1.4.1.3375.1.2.1.1.3.4.1.7
The number of times that data associated with the virtual server have been refreshed with new information.
Back to F5-3DNS-MIB MIB page.
IPHost Network monitor allows you to monitor lbRouterVServRefreshes 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 routers right now.