PRTG Manual: SNMP Uptime v2 Sensor

Credentials

This sensor requires credentials for SNMP in settings that are higher in the object hierarchy.

IPv6

This sensor supports IPv6.

Performance impact

This sensor has a very low performance impact.

Scanning interval

• The minimum scanning interval of this sensor is 1 minute.
• The recommended scanning interval of this sensor is 1 minute.

Multi-platform probe

You can add this sensor to a multi-platform probe.

Data Source

Select the object identifier (OID) the sensor gets its uptime from:

• Automatic (default): Use HOST-RESOURCES-V2-MIB::hrSystemUptime and fall back to SNMPv2-MIB::sysUpTime.
• Use HOST-RESOURCES-V2-MIB::hrSystemUptime: Use HOST-RESCOURCES-V2-MIB::hrSystemUptime.
• Use SNMPv2-MIB::sysUpTime: Use SNMPv2-MIB::sysUpTime.
• Use SNMP-FRAMEWORK-MIB::snmpEngineTime: Use SNMP-FRAMEWORK-MIB::snmpEngineTime.

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.

Result Handling

Define what PRTG does with the sensor result:

• Discard result: Do not store the sensor result.
• Store result: Store the last sensor result in the \Logs\sensors subfolder of the PRTG data directory on the probe system. The file name is Result of Sensor [ID].log. This setting is for debugging purposes. PRTG overwrites this file with each scanning interval.

If you select Store result, the sensor writes the standard error (stderr) streams in clear text to the last sensor result file. Do not return sensitive information via the scripts that you run with this sensor.

In a cluster, PRTG stores the result in the PRTG data directory of the master node.

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

System Uptime

The uptime

This channel is the primary channel by default.