The tunnel receives an SD2 alarm.(SessionTunnelId=[SessionTunnelId], LocalLspId=[LocalLspId], IngressLsrId=[IngressLsrId], EgressLsrId=[EgressLsrId], TunnelName=[TunnelName], SignalingProtocol=[SgnlPrtcl], SignalledTunnelName=[SignalledTunnelName])
The packet loss ratio of an MPLS tunnel on the local end reached the SD2 threshold.
| Trap Attribute | Description | 
|---|---|
| Alarm or Event | Alarm | 
| Trap Severity | Critical | 
| Mnemonic Code | hwMplsOamSF | 
| Trap OID | 1.3.6.1.4.1.2011.5.25.121.2.1.28 | 
| MIB | HUAWEI-MPLS-EXTEND-MIB | 
| Alarm ID | 0x0001005c | 
| Alarm Name | hwMplsOamSF | 
| Alarm Type | communicationsAlarm | 
| Raise or Clear | Raise | 
| Match trap | MPLS_LSPM_1.3.6.1.4.1.2011.5.25.121.2.1.29 hwMplsOamSFRecovery | 
| Parameter | Description | 
|---|---|
| SessionTunnelId | Tunnel ID | 
| LocalLspId | Local LSP ID | 
| IngressLsrId | ID of the ingress LSR | 
| EgressLsrId | ID of the egress LSR | 
| TunnelName | Tunnel name | 
| SgnlPrtcl | Tunneling protocol | 
| SignalledTunnelName | Tunnel alias. | 
| VB OID | VB Name | VB Index | 
|---|---|---|
| 1.3.6.1.4.1.2011.5.25.121.1.1.1.29 | hwMplsTunnelInterfaceName | hwMplsTunnelIndex hwMplsTunnelInstance hwMplsTunnelIngressLSRId hwMplsTunnelEgressLSRId | 
| 1.3.6.1.4.1.2011.5.25.121.1.1.1.30 | hwMplsTunnelSignalProto | hwMplsTunnelIndex hwMplsTunnelInstance hwMplsTunnelIngressLSRId hwMplsTunnelEgressLSRId | 
| 1.3.6.1.4.1.2011.5.25.121.1.1.1.33 | hwMplsTunnelSignalledTunnelName | hwMplsTunnelIndex hwMplsTunnelInstance hwMplsTunnelIngressLSRId hwMplsTunnelEgressLSRId | 
1. Check whether the threshold is set properly.
2. Reconfigure the threshold.
Check whether the MPLS_LSPM_1.3.6.1.4.1.2011.5.25.121.2.1.29 hwMplsOamSFRecovery alarm is generated.
3. Collect alarm and configuration information, and contact technical support personnel. 4. End.