With IPHost Network Monitor you can run simple snmp requests against a Dell device in your network.
fcNPSInPRJTFrames
Fibre Channel NPS In PRJT Frames
1.3.6.1.4.1.2512.1.1.12.1.9
The number of P_RJT frames received by this N_Port/NL_Port.
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IPHost Network monitor allows you to monitor fcNPSInPRJTFrames on Dell device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Dell WiFi routers right now.