With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swPortMirrorTxPortList
Switch Port Mirror Tx Port List
1.3.6.1.4.1.171.11.70.5.2.6.3
This object indicates the Tx port list of ports to be sniffed.
Back to DES3010F-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swPortMirrorTxPortList 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 routers right now.