With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
tokenRingMLHistoryBeaconPkts
token Ring ML History Beacon Packets
1.3.6.1.2.1.16.2.3.1.11
The total number of beacon MAC packets detected by the probe during this sampling interval.
Back to TOKEN-RING-RMON-MIB MIB page.
IPHost Network monitor allows you to monitor tokenRingMLHistoryBeaconPkts 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 VPN routers right now.