The bridge resumes the position of root bridge.(ProcessID=[ProcessID], InstanceID=[InstanceID], ProInstRootType=[ProInstRootType])
| Trap Attribute | Description | 
|---|---|
| Alarm or Event | Alarm | 
| Trap Severity | Critical | 
| Mnemonic Code | hwMstpProRootLost | 
| Trap OID | 1.3.6.1.4.1.2011.5.25.42.4.2.29 | 
| MIB | HUAWEI-MSTP-MIB | 
| Alarm ID | 0x0d542002 | 
| Alarm Name | hwMstpProRootLost | 
| Alarm Type | communicationsAlarm | 
| Raise or Clear | Clear | 
| Match trap | 
| Parameter | Description | 
|---|---|
| ProcessID | MSTP process ID | 
| InstanceID | Instance ID | 
| ProInstRootType | Root bridge role type | 
| VB OID | VB Name | VB Index | 
|---|---|---|
| 1.3.6.1.4.1.2011.5.25.42.4.1.28.1.6 | hwMstpProInstanceRootType | hwMstpProID hwMstpInstanceID |