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PRTG Manual: SNMP Cisco CBQoS Sensor

<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: SNMP Cisco CBQoS Sensor

The SNMP Cisco CBQoS sensor monitors network parameters using Cisco's Class Based Quality of Service (CBQoS) via the Simple Network Management Protocol (SNMP).

The sensor supports the classes Class Map, Match Statement, and Queueing.

SNMP Cisco CBQoS 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 CBQoS
French: Cisco CBQoS (SNMP)
German: SNMP Cisco CBQoS
Japanese: SNMP Cisco CBQoS
Portuguese: CBQoS Cisco (SNMP)
Russian: SNMP Cisco CBQoS
Simplified Chinese: SNMP Cisco CBQoS
Spanish: CBQoS Cisco (SNMP)

Remarks

This sensor has a very low performance impact.
This sensor only supports the IPv4 protocol.
For a general introduction to the technology behind SNMP, see section Monitoring via SNMP.
For a general introduction to the technology behind Quality of Service (QoS) monitoring, see section Monitoring Quality of Service.

Add Sensor

The Add Sensor dialog appears when you manually add a new sensor to a device. It only shows the settings that are required to create the sensor. You can change nearly all settings on the sensor's Settings tab after creation.

The settings that you select in the Add Sensor dialog are valid for all sensors that you create when you finish the dialog.

Class Based QoS Specific

Setting	Description
Entries	Select the entries that you want to monitor. PRTG creates one sensor for each entry that you select. Enable check boxes in front of the respective lines to select the items. Use the check box in the table header to select all items or to cancel the selection. In large tables, use the search function in the upper-right corner.

Setting

Description

Entries

Select the entries that you want to monitor. PRTG creates one sensor for each entry that you select.

Enable check boxes in front of the respective lines to select the items. Use the check box in the table header to select all items or to cancel the selection. In large tables, use the search function in the upper-right corner.

Basic Sensor Settings

Click the Settings tab of a sensor to change its settings.

Basic Sensor Settings

Setting	Description
Sensor Name	Enter a name to identify the sensor.
Parent Tags	Shows tags that the sensor inherits from its parent device, parent group, and parent probe. This setting is for your information only. You cannot change it.
Tags	Enter one or more tags. Confirm each tag with the Spacebar key, a comma, or the Enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case-sensitive. Tags are automatically inherited. It is not possible to enter tags with a leading plus (+) or minus (-) sign, nor tags with parentheses (()) or angle brackets (<>). For performance reasons, it can take some minutes until you can filter for new tags that you added. The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor: cbqossensor
Priority	Select a priority for the sensor. This setting determines the position of the sensor in lists. The highest priority is at the top of a list. Choose from the lowest priority () to the highest priority ().

Usually, a sensor connects to the IP Address/DNS Name of the parent device. See the device settings for details. For some sensors, you can explicitly define the monitoring target in the sensor settings.

Class Based QoS Specific

Setting	Description
Object Type	Shows the object type of the parameter that this sensor monitors. PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.
Interface	Shows the interface of the parameter that this sensor monitors. PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.
Description	Shows the description of the parameter that this sensor monitors. PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.
BitMask	Shows the number of available channels for the parameter that this sensor monitors. PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.
ObjectID	Shows the ObjectID of the parameter that this sensor monitors. PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.
ConfigID	Shows the ConfigID of the parameter that this sensor monitors. PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.

Sensor Display

Setting	Description
Primary Channel	Select a channel from the list to define it as the primary channel. In the device tree, the last value of the primary channel is always displayed 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 different channels are shown for this sensor: 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 enable Stack channels on top of each other as Graph Type. Select a unit from the list. All channels with this unit are stacked 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, the last value of the primary channel is always displayed 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 different channels are shown for this sensor:

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 enable Stack channels on top of each other as Graph Type. Select a unit from the list. All channels with this unit are stacked 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.

Scanning Interval

For more information, see section Root Group Settings, section Scanning Interval.

Schedules, Dependencies, and Maintenance Window

You cannot interrupt the inheritance for schedules, dependencies, and maintenance windows. The corresponding settings from the parent objects are always active. However, you can define additional schedules, dependencies, and maintenance windows. They are active at the same time as the parent objects' settings.

Schedules, Dependencies, and Maintenance Window

For more information, see section Root Group Settings, section Schedules, Dependencies, and Maintenance Window.

Access Rights

For more information, see section Root Group Settings, section Access Rights.

Channel List

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

Channel	Description
Current Queue Depth	The current queue depth
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 in percent.
Drop Packets	The number of drop packets per second
Drop Size	The drop size per second
Maximum Queue Depth	The maximum queue depth
No Buffer Drop Packets	The number of drop packets without buffer per second
Post Policy Size	The post policy size per second
Pre Policy Packets	The number of pre-policy packets per second
Pre Policy Size	The pre-policy size per second

Knowledge Base

What security features does PRTG include?

https://kb.paessler.com/en/topic/61108

My SNMP sensors don’t work. What can I do?

https://kb.paessler.com/en/topic/46863