Sensor of the Week: SNMP RMON Sensor

 Originally published on August 20, 2014 by Florian Staffort
Last updated on March 03, 2022 • 7 minute read

As a system administrator you have to deal with a lot of data. Especially traffic data is of great importance when it comes to gaining a comprehensive overview of your network. The Remote Monitoring (RMON) standard provides specifications that enable you to dive even deeper into the package flow of your network. By displaying the traffic data for each port of your SNMP (Simple Network Monitoring Protocol) compatible devices in different channels, PRTG Network Monitor's SNMP RMON sensor helps you achieve a sound basis for detailed analysis.


Available channels for each traffic port, depending on the data returned by your device, may include the following values:

Transmitted kbit/s

Packets (#/s)

Broadcast Packets (#/s)

Multicast Packets (#/s)

CRC Errors (#/s)

Undersize Packets (#/s)

Oversize Packets (#/s)

Fragments (#/s)

Jabbers (#/s)

Collisions (#/s)

Packets <= 64 Byte (#/s)

Packets 65 - 127 Bytes (#/s)

Packets 128 - 255 Bytes (#/s)

Packets 256 - 511 Bytes (#/s)

Packets 512 - 1023 Bytes (#/s)

Packets 1024 - 1518 Bytes (#/s)

Drop Events (#/s)



When adding the sensor to an SNMP compatible device, you can select the ports from a list with all items which are available to monitor. One sensor will be created for each port:


If you want detailed information on the traffic in your network displayed by individual channels on port level, the SNMP RMON sensor is the way to go. Test it now—it might help you gain new insights into the packet flow structure of your network!

For more detailed information please have a look at the PRTG manual, where you will find a comprehensive description of the SNMP RMON sensor.


All Sensors of the Week

You have missed other articles of our "Sensors of the Week" blog series? Just take a look at the last 10 sensors:

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