The newRoot trap indicates that the sending agent has become the new root of the Spanning Tree; the trap is sent by a bridge soon after its election as the new root, e.g., upon expiration of the Topology Change Timer, immediately subsequent to its election. Implementation of this trap is optional.
1.3.6.1.2.1.17.0.1
Trap : newRoot
Objects : { extremeStpDomainStpdInstance }
OID : "1.3.6.1.2.1.17.0.1"
object : extremeStpDomainStpdInstance type : Integer32