With IPHost Network Monitor you can run simple snmp requests against a Dell device in your network.
fcNPortSpeed
Fibre Channel N Port Speed
1.3.6.1.4.1.2512.1.1.8.1.2
The transmission rate, an FC-0 physical characteristic.
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IPHost Network monitor allows you to monitor fcNPortSpeed on Dell device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Dell switches right now.