With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
tokenRingMLHistoryFrequencyErrors
token Ring ML History Frequency Errors
1.3.6.1.2.1.16.2.3.1.23
The total number of frequency errors reported in error reporting packets detected by the probe during this sampling interval.
Back to TOKEN-RING-RMON-MIB MIB page.
IPHost Network monitor allows you to monitor tokenRingMLHistoryFrequencyErrors 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.