With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2DevAlarmNewRoot
Switch L2 Device Alarm New Root
1.3.6.1.4.1.171.11.70.5.2.1.3.1
When the device has become the new root of the Spanning Tree, this object decides whether to send a new root trap.
Back to DES3552-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2DevAlarmNewRoot 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.