The status of the PWE3 VC turned protecting from working. (VcId=[VcId], VcType=[VcType], PeerAddress=[PeerAddress], CtrlWord=[CtrlWord], SecondaryPwId=[SecondaryPwId], HWL2VpnStateChangeReason=[HWL2VpnStateChangeReason], InterfaceName=[InterfaceName])
The PWE3 VC status changed from working to protection.
| Trap Attribute | Description | 
|---|---|
| Alarm or Event | Event | 
| Trap Severity | Warning | 
| Mnemonic Code | hwPWVcSwitchWtoPExpand | 
| Trap OID | 1.3.6.1.4.1.2011.5.25.119.4.1.9.1 | 
| MIB | HUAWEI-PWE3-MIB | 
| Alarm ID | This is an event trap and does not involve alarm ID. | 
| Alarm Name | This is an event trap and does not involve alarm name. | 
| Alarm Type | This is an event trap and does not involve alarm type. | 
| Raise or Clear | This is an event trap and does not involve alarm generation or clearance. | 
| Match trap | - | 
| Parameter | Description | 
|---|---|
| VcId | VC ID. | 
| VcType | Indicates the type of a VC. | 
| PeerAddress | Peer IP address. | 
| CtrlWord | Indicates whether the control word is enabled: 
 | 
| SecondaryPwId | Secondary PW ID. | 
| HWL2VpnStateChangeReason | Reason for the VC status change. | 
| InterfaceName | Name of the VC interface. | 
| VB OID | VB Name | VB Index | 
|---|---|---|
| 1.3.6.1.4.1.2011.5.25.119.4.1.8.1.1.19 | hwPWVcCtrlWordExpand | hwPWVcIDExpand hwPWVcTypeExpand hwPWVcPeerAddrExpand | 
| 1.3.6.1.4.1.2011.5.25.119.4.1.1.9 | hwPWVcSwitchRmtID | - | 
| 1.3.6.1.4.1.2011.5.25.119.4.1.1.8 | hwPWVcStateChangeReason | - | 
| 1.3.6.1.4.1.2011.5.25.119.4.1.8.1.1.49 | hwPWVcIfNameExpand | hwPWVcIDExpand hwPWVcTypeExpand hwPWVcPeerAddrExpand | 
1. Perform the troubleshooting operations described in hwPWVcDown_active to rectify the fault and then check whether the problem is resolved.
2. Collect log information and configuration information, and then contact technical support personnel.
3. End.