With IPHost Network Monitor you can run simple snmp requests against a Dell device in your network.
swPrincipalSwitch
Switch Principal Switch
1.3.6.1.4.1.1588.2.1.1.1.2.2
the Principal switch as per FC-SW.
Back to SW-MIB MIB page.
IPHost Network monitor allows you to monitor swPrincipalSwitch on Dell device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Dell tablets right now.