With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
sourceRoutingStatsRingNumber
source Routing Stats Ring Number
1.3.6.1.2.1.16.10.6.1.2
The ring number of the ring monitored by this entry. When any object in this entry is created, the probe will attempt to discover the ring number. Only after the ring number is discovered will this object be created. After creating an object in this entry, the management station should poll this object to detect when it is created. Only after this object is created can the management station set the sourceRoutingStatsStatus entry to valid(1).
Back to TOKEN-RING-RMON-MIB MIB page.
IPHost Network monitor allows you to monitor sourceRoutingStatsRingNumber 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.