With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
tokenRingPHistoryDataPkts256to511Octets
token Ring P History Data Pkts256to511 Octets
1.3.6.1.2.1.16.2.4.1.12
The total number of good non-MAC frames received during this sampling interval that were between 256 and 511 octets in length inclusive, excluding framing bits but including FCS octets.
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IPHost Network monitor allows you to monitor tokenRingPHistoryDataPkts256to511Octets 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.