| OID | Object | Binding Variable | Description | Implemented Specifications | 
|---|---|---|---|---|
| 1.3.6.1.4.1.2011.5.25.177.8.1 | hwTnl2VpnTrapEvent | 
 | This trap indicates whether the tunnel used by a VPN is reachable, If the tunnel is unreachable, a trap is sent to notify the user, hwTunnelReachablityEvent is 2. If the tunnel is reachable, a trap is sent to notify the user, hwTunnelReachablityEvent is 1. | This object is implemented as defined in the corresponding MIB files. |