With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2StpPortProtocolMigration
Switch L2 Stp Port Protocol Migration
1.3.6.1.4.1.171.11.70.5.2.16.4.1.7
When operating in RSTP (version 2) mode, writing TRUE(1) to this object forces this port to transmit RSTP BPDUs. Any other operation on this object has no effect and it always returns FALSE(2) when read.
Back to DES3026-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2StpPortProtocolMigration 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 VPN routers right now.