With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMSTPInstDesignatedBridge
Switch MSTP Inst Designated Bridge
1.3.6.1.4.1.171.12.15.2.3.1.17
The Bridge Identifier for the transmitting bridge for this CIST or MSTI
Back to MSTP-MIB MIB page.
IPHost Network monitor allows you to monitor swMSTPInstDesignatedBridge 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.