With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swERPSMgmtRAPSProtectionVlanRangeList193to256
Switch ERPS Mgmt RAPS Protection Vlan Range List193to256
1.3.6.1.4.1.171.12.78.3.1.1.19
This object indicates the VLAN range (1537-2048) that belongs to the protection VLANs.
Back to ERPS-MIB MIB page.
IPHost Network monitor allows you to monitor swERPSMgmtRAPSProtectionVlanRangeList193to256 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 access points right now.