Trap indicating the fan state. rndErrorSeverity will be: 0 for fan state nomal, notPresent 1 for fan state warning, notFunctioning 2 for fan state critical 3 for fan state fatal The error text will specify the fan index, fan description and the exact fan state
Sources for this description
D-Link official switch MIBsD-Link MIB copies (LibreNMS/Observium Community)