With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swPortTrunkIndex
Switch Port Trunk Index
1.3.6.1.4.1.171.11.70.5.2.9.3.1.1
The index of logical port trunk.
Back to DES3026-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swPortTrunkIndex 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 access points right now.