<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: Cisco IP SLA Sensor
The Cisco IP SLA sensor monitors Voice over IP (VoIP) network parameters using IP service level agreements (SLA) from Cisco via the Simple Network Management Protocol (SNMP).
Cisco IP SLA Sensor
For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.
Sensor in Other Languages
Dutch: Cisco IP SLA
French: Cisco IP SLA
German: Cisco IP SLA
Japanese: Cisco IP SLA
Portuguese: Cisco IP SLA
Russian: Cisco IP SLA
Simplified Chinese: Cisco IP SLA
Spanish: Cisco IP SLA
Remarks
This sensor only supports IPv4.
This sensor has a low performance impact.
This sensor uses lookups to determine the status values of one or more channels.
If the object identifiers (OID) that this sensor uses are not available on the target device, the sensor shows the error message: No such object (SNMP error # 222). If this occurs, open the SNMP Compatibility Optionssetting of the parent device or group and set the Request Mode to Use single get.
If there is a very large number of IP SLAs available during sensor creation, we recommend that you limit the result set by using the Start Interface Index and End Interface Index options in the SNMP Compatibility Options setting of the parent device or group.
If the name contains angle brackets (<>), PRTG replaces them with braces ({}) for security reasons. For more information, see the Knowledge Base: What security features does PRTG include?
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:
ipslasensor
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 ().
IP SLA Specific
IP SLA Specific
Setting
Description
ID
The ID of the SLA that this sensor monitors.
This sensor can support the following operations with the specified type IDs:
echo (1)
pathEcho (2)
fileIO (3)
script (4)
udpEcho (5)
tcpConnect (6)
http (7)
dns (8)
jitter (9)
dlsw (10)
dhcp (11)
ftp (12)
icmp-jitter (16)
path-jitter (23)
The numbers are the IDs of the SLA types as reported by the target device. PRTG translates them into the corresponding strings. These IDs are independent of the IDs that you see in the Add Sensor dialog. If the target device returns other values, this sensor shows an error message that says that it cannot find the type.
Packet Loss values are summarized but have no explicit channel for Source-Destination or Destination-Source values.
Type
The type of the SLA that this sensor monitors.
Name (Tag)
The name of the SLA that this sensor monitors.
Owner
The owner of the SLA that this sensor monitors.
Frequency
The frequency of the SLA that this sensor monitors.
Sensor Display
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 select Stack channels on top of each other above.
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 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
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
Avg. Jitter
The average jitter
Avg. Jitter Destination - Source
The average jitter between destination and source
Avg. Jitter Source - Destination
The average jitter between source and destination
Avg. Latency Destination - Source
The average latency between destination and source
Avg. Latency Source - Destination
The average latency between source and destination
Average Round Trip Time (RTT)
The average RTT
This channel is the primary channel by default.
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
ICPIF
The ICPIF
Late Packets
The number of late packets
Max. Latency Destination - Source
The maximum latency between destination and source
Max. Latency Source - Destination
The maximum latency between source and destination
Max. RTT
The maximum RTT
Min. Latency Destination - Source
The minimum latency between destination and source
Min. Latency Source - Destination
The minimum latency between source and destination