The link-heartbeat function detected that the packet loss rate fell below the threshold. (InterfaceIfIndex=[InterfaceIfIndex], InterfaceName=[InterfaceName], SendInterfaceName=[SendInterfaceName], RecvInterfaceName=[RecvInterfaceName])
| Trap Attribute | Description | 
|---|---|
| Alarm or Event | Alarm | 
| Trap Severity | Critical | 
| Mnemonic Code | hwLinkHeartbeatDropAlarm | 
| Trap OID | 1.3.6.1.4.1.2011.5.25.157.2.223 | 
| MIB | HUAWEI-PORT-MIB | 
| Alarm ID | 0x09ae2002 | 
| Alarm Name | hwLinkHeartbeatDropAlarm | 
| Alarm Type | qualityOfServiceAlarm | 
| Raise or Clear | Clear | 
| Match trap | FEI_1.3.6.1.4.1.2011.5.25.157.2.222 hwLinkHeartbeatDropAlarm | 
| Parameter | Description | 
|---|---|
| InterfaceIfIndex | Interface IfIndex. | 
| InterfaceName | Interface Name. | 
| SendInterfaceName | Send Packets Interface Name. | 
| RecvInterfaceName | Recvive Packets Interface Name. | 
| VB OID | VB Name | VB Index | 
|---|---|---|
| 1.3.6.1.4.1.2011.5.25.157.1.24.1.1.1 | hwLinkHeartbeatIfindex | hwLinkHeartbeatIfindex | 
| 1.3.6.1.4.1.2011.5.25.157.1.24.1.1.2 | hwLinkHeartbeatIfName | hwLinkHeartbeatIfindex | 
| 1.3.6.1.4.1.2011.5.25.157.1.24.1.1.3 | hwLinkHeartbeatTxInterface | hwLinkHeartbeatIfindex | 
| 1.3.6.1.4.1.2011.5.25.157.1.24.1.1.4 | hwLinkHeartbeatRxInterface | hwLinkHeartbeatIfindex |