With IPHost Network Monitor you can run simple snmp requests against a Dell device in your network.
swNsPortIndex
Switch Ns Port Index
1.3.6.1.4.1.1588.2.1.1.1.7.2.1.1
The object identifies the Name Server database entry.
Back to SW-MIB MIB page.
IPHost Network monitor allows you to monitor swNsPortIndex on Dell device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Dell routers right now.