With IPHost Network Monitor you can run simple snmp requests against a F5 Network device in your network.
globalRTTPortDiscovery
global RTT Port Discovery
1.3.6.1.4.1.3375.1.2.1.1.1.40
Indicates whether the load-balancing DNS server uses the discovery factory to find an alternate port to be used by the probing factory, if probing on port 53 fails.
Back to F5-3DNS-MIB MIB page.
IPHost Network monitor allows you to monitor globalRTTPortDiscovery 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.