PRTG Manual: SNMP Cisco ASA VPN Traffic Sensor

The SNMP Cisco ASA VPN Traffic sensor monitors the traffic of an Internet Protocol Security (IPsec) VPN connection on a Cisco Adaptive Security Appliance via the Simple Network Management Protocol (SNMP).

SNMP Cisco ASA VPN Traffic Sensor

For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.

Sensor in Other Languages

Dutch: SNMP Cisco ASA VPN Verkeer
French: Cisco ASA trafic VPN (SNMP)
German: SNMP Cisco ASA VPN-Datenverkehr
Japanese: SNMP Cisco ASA VPN トラフィック
Portuguese: Tráfego VPN Cisco ASA (SNMP)
Russian: Трафик SNMP Cisco ASA VPN
Simplified Chinese: SNMP Cisco ASA VPN 流量
Spanish: Tráfico VPN Cisco ASA (SNMP)

Remarks

Consider the following remarks and requirements for this sensor:

Remark	Description
IPsec connections	This sensor can monitor IPsec connections only.
Permanent connections	This sensor is intended to monitor permanent connections. It shows an error if a connection is interrupted.
IPv6	This sensor supports IPv6.
Performance impact	This sensor has a low performance impact.
Knowledge Base	Knowledge Base: I get the error PE123 when using the SNMP Cisco ASA VPN Traffic sensor. What can I do?

Basic Sensor Settings

The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:

snmpciscoasavpnsensor
snmpciscoasavpntrafficsensor

For more information about basic sensor settings, see section Sensor Settings.

ASA VPN Specific

Setting	Description
Remote IP Address	The IP address of the connection that this sensor monitors. PRTG shows this value for reference purposes only. We strongly recommend that you only change it if the Paessler support team explicitly asks you to do so. Wrong usage can result in incorrect monitoring data.
Sensor Behavior	Define the sensor status if no active connection is available: Show down status if no connection is active (default): Set the sensor to the Down status if no connection is active. Show warning status if no connection is active: Set the sensor to the Warning status if no connection is active. Stay in up status if no connection is active: Stay in the Up status if no connection is active.
IKE Version Handling	Select the engine for the Internet Key Exchange (IKE) version handling: IKEv1 (default): Select this option if the tunnel on the device uses IKEv1. IKEv1 and IKEv2: Select this option if the tunnel on the device uses IKEv1 or IKEv2. The IKEv1 and IKEv2 option is in beta status and might not work properly.

Setting

Description

Remote IP Address

The IP address of the connection that this sensor monitors.

PRTG shows this value for reference purposes only. We strongly recommend that you only change it if the Paessler support team explicitly asks you to do so. Wrong usage can result in incorrect monitoring data.

Sensor Behavior

Define the sensor status if no active connection is available:

Show down status if no connection is active (default): Set the sensor to the Down status if no connection is active.
Show warning status if no connection is active: Set the sensor to the Warning status if no connection is active.
Stay in up status if no connection is active: Stay in the Up status if no connection is active.

IKE Version Handling

Select the engine for the Internet Key Exchange (IKE) version handling:

IKEv1 (default): Select this option if the tunnel on the device uses IKEv1.
IKEv1 and IKEv2: Select this option if the tunnel on the device uses IKEv1 or IKEv2.

The IKEv1 and IKEv2 option is in beta status and might not work properly.

Sensor Display

Setting	Description
Primary Channel	Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor. You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab.
Graph Type	Define how this sensor shows different channels: Show channels independently (default): Show a graph for each channel. Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic. You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).
Stack Unit	This setting is only visible if you select Stack channels on top of each other above. Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Setting

Description

Primary Channel

Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor.

You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab.

Graph Type

Define how this sensor shows different channels:

Show channels independently (default): Show a graph for each channel.
Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic.
You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).

Stack Unit

This setting is only visible if you select Stack channels on top of each other above.

Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Inherited Settings

By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click under the corresponding setting name to disable the inheritance and to display its options.

For more information, see section Inheritance of Settings.

Channel List

Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.

Channel	Description
Downtime	In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status
Total	The total traffic
Traffic In	The incoming traffic This channel is the primary channel by default.
Traffic Out	The outgoing traffic