With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
ringStationControlRingState
ring Station Control Ring State
1.3.6.1.2.1.16.10.1.1.4
The current status of this ring.
Back to TOKEN-RING-RMON-MIB MIB page.
IPHost Network monitor allows you to monitor ringStationControlRingState 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.