With IPHost Network Monitor you can run simple snmp requests against a F5 Network device in your network.
virtualServerMaxConn
virtual Server Max Connection
1.3.6.1.4.1.3375.1.1.3.2.1.18
The maximum number of connections this virtual server has had open at any one time.
Back to LOAD-BAL-SYSTEM-MIB MIB page.
IPHost Network monitor allows you to monitor virtualServerMaxConn 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.