With IPHost Network Monitor you can run simple snmp requests against a Dell device in your network.
fcNPSInPBSYFrames
Fibre Channel NPS In PBSY Frames
1.3.6.1.4.1.2512.1.1.12.1.6
The number of P_BSY frames received by this N_Port/NL_Port.
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IPHost Network monitor allows you to monitor fcNPSInPBSYFrames on Dell device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Dell firewalls right now.