PRTG Manual: Cisco IP SLA Sensor

Sensor Name

Enter a name to identify the sensor. By default, PRTG shows this name in the device tree, as well as in alarms, logs, notifications, reports, maps, libraries, and tickets.

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?

Parent Tags

The 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:

• 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 ().

ID

The ID of the SLA that this sensor monitors.

The 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, the 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.

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.

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

Min. RTT

The minimum RTT

MOS

The MOS

Packets Lost

The number of lost packets

Packets Lost %

The number of lost packets (%)

Packets Out of Sequence

The number of out-of-sequence packets