With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2UnitInfoFanStatus
Switch L2 Unit Info Fan Status
1.3.6.1.4.1.171.11.70.5.2.2.1.1.2
This object indicates the status of the Fan. good(1) - The is fan working . fail(2) - The is fan failed.
Back to DHS3224-MIB MIB page.
IPHost Network monitor allows you to monitor swL2UnitInfoFanStatus on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link switches right now.