VPN Tunnel (Cisco) Check
The VPN Tunnel (Cisco) Check monitors the status of a VPN tunnel running on a Cisco VPN provider, such as an ASA firewall or a VPN Concentrator.
Basic Check information
| Check Type | SNMP |
|---|---|
| Instances on a Device | 1 |
| Supported Systems/Applications | Any Cisco device that provides VPN capabilities. |
| Device Class | Switch/Router |
Troubleshooting
| Issue | Corrective Action |
|---|---|
| Failed | Please check that the correct SNMP community string is configured in Network Discovery for the device |
| 201 Exception OID_TYPE_NOSUCHOBJECT | Missing OID object on the device for specific metric |
SNMP Properties Queried
| Object Descriptors | Numerical OID |
|---|---|
| $ActiveTime | 1.3.6.1.4.1.9.9.171.1.2.3.1.16 |
| $HashAlgo | 1.3.6.1.4.1.9.9.171.1.2.3.1.13 |
| $DroppedInBoundPackets | 1.3.6.1.4.1.9.9.171.1.2.3.1.21 |
| $DroppedOutBoundPackets | 1.3.6.1.4.1.9.9.171.1.2.3.1.29 |
Calculations Performed
| Status Detail | Description |
|---|---|
| Tunnel Uptime | The duration of the VPN tunnel being monitored. |
| Hash Algorithm | The hashing algorithm used to compute a hash value from a base input number to encrypt the VPN tunnel. |
| Dropped Inbound Packets | The number of data packets being sent to the monitored device that were lost during the VPN tunnel. |
| Dropped Outbound Packets | The number of data packets being sent from the monitored device that were lost during the VPN tunnel. |