With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
ringStationEntry
ring Station Entry
1.3.6.1.2.1.16.10.2.1
A collection of statistics for a particular station that has been discovered on a ring monitored by this device.
Back to TOKEN-RING-RMON-MIB MIB page.
IPHost Network monitor allows you to monitor ringStationEntry 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 IP cameras right now.