All-in-one router
monitoring software PRTG

  • Check bandwidth consumption, network traffic, error messages of your routers with PRTG
  • Router monitoring via SNMP, Packet Sniffer, NetFlow/sflow/jFlow
  • PRTG detects suspicious traffic

Free Download
  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime

Prevent network failures and bottlenecks with PRTG router monitoring


Overloaded routers (and thus networks) can slow down a company's communication and workflow.

PRTG Network Monitor, our network monitoring solution, allows you to check all your router connections. Determine how much bandwidth is used per connection, the devices, programs, or users which generate the most traffic, and where bottlenecks occur in your network. You'll get a ton of valuable information which will make your work as an administrator that much easier. PRTG supports routers from all the major manufacturers like Cisco, Dell, Linksys, TP Link or Netgear.

With its wide range of features, PRTG Network Monitor makes it easy to monitor your router traffic around the clock, log network activities, and calculate network utilization.

Along with traffic and bandwidth, you can also monitor the device itself. PRTG lets you keep a constant eye on computer fans, temperatures, and power supplies, as well as the memory of your router. And thanks to PRTG, you can even stay up-to-date on the status and statistics of your VPN connection.

You'll be notified automatically whenever something seems amiss inside your router or network traffic. PRTG lets you act quickly to prevent bandwidth bottlenecks from paralyzing your network.

Thanks to PRTG, the entire staff can work with peace of mind.

What kind of data is gathered?
3 important points

With PRTG, you'll be able to recognize when your routers are forwarding too much data - before they become completely overloaded.

The bandwidth consumption of individual connections

Network activities and causes of traffic


Router error messages

Here's what monitoring looks like in PRTG

“I particularly like having breakfast at home and just surveying my domain, and understanding what's working and what isn't.”

Steve Coppin, Oxford University

Router monitoring
with PRTG





i NetFlow is a protocol for collecting, aggregating and recording traffic flow data in a network. NetFlow data provide a more granular view of how bandwidth and network traffic are being used than other monitoring solutions, such as SNMP. NetFlow was developed by Cisco and is embedded in Cisco’s IOS software on the company’s routers and switches and has been supported on almost all Cisco devices since the 11.1 train of Cisco IOS Software. Read more ...

Router checking with PRTG supports three methods which come with their own advantages and disadvantages:


The network protocol SNMP is the easiest way to calculate traffic. CPU and network loads remain low. However, it is not possible to analyze protocols or IP addresses.

Packet Sniffer

A built-in PRTG Packet Sniffer lets you examine all network data packets for protocols or IP addresses. But of the three methods, this one generates the highest CPU and network load.


The NetFlow/sflow/jFlow/IPFIX methods belong to the routers of certain providers such as Cisco, HP, or Juniper. Bandwidth utilization is calculated within each device and transmitted to PRTG for analysis and disclosure. The most powerful of the three alternatives when both CPU and network loads are low, this method is especially suitable for networks with a great deal of traffic.

Router monitoring sensors

The following sensors can also be used for router monitoring with PRTG:

Cisco ADSL

Monitors ADSL statistics of a Cisco router using SNMP. It can show:

  • Speed of downlink and uplink
  • Remote and local attenuation, SNR and local power output

SNMP Cisco ADSL Sensor


The Port sensor monitors a network service by connecting to its port. Depending on your settings, it can alert you either when the monitored port is open, or when it is closed.

NetFlow V5

Shows traffic for NetFlow V5-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

NetFlow V5 Sensor

NetFlow V9

Shows traffic for NetFlow v9-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

NetFlow V9 Sensor


Shows traffic for IPFIX-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

IPFIX Sensor


Shows traffic for jFlow-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

jFlow V5 Sensor


Shows traffic for sFlow-supported devices, split by type and is able to into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

sFlow Sensor

How to monitor router traffic

Here's a quick summary about how to monitor router traffic with PRTG:

  1. Configure and run PRTG Network Monitor.
  2. Choose one of following options for router monitoring protocols according to your router specifications: SNMP, NetFlow/jFlow/sFlow or Packet Sniffing. 
  3. See the bandwidth consumption of individual connections and all network activities at a glance and create individual dashboards.
  4. Set up custom alarms and you’ll be notified in case of router errors or overloads.

Your routers at a glance
– even on the go

PRTG can be started within minutes and it's compatible with many mobile devices.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.


PRTG monitors these vendors and applications, and more, in one view!


PRTG simplifies your day! 

Let our Router Monitor work for you
so you can concentrate on your day-to-day tasks with total peace of mind.

PRTG saves time 

With PRTG, you get one central monitoring tool for all your routers. You’ll enjoy a quick and complete overview at all times via our dashboard and app.

PRTG saves worry 

Check your routers around the clock has never been easier. The built-in alert feature is quick to act – before crashes and complaints can arise.

PRTG saves money

80% of our customers report substantial savings in the area of network management. And license costs pay for themselves in an average of only a few weeks.

Prevent network failures and bottlenecks with PRTG Router Monitoring




Immediately know the score

Immediately know the score

PRTG provides automatic alerts when the network crashes or protocol errors take place. 


Fix bugs quickly

Fix bugs quickly

Meet problems head-on to prevent your network from crashing.


Optimize bandwidth consumption

Optimize bandwidth consumption

By adjusting available bandwidth to meet demand and reducing unnecessary traffic, you'll create more stable connections.

Speed up company processes - an optimized bandwidth allows for a company's operations to run quickly. Enjoy an increase in the availability of services and applications.


Traffic transparency

Traffic transparency

With PRTG, you'll receive and be able to analyze information regarding the intensity of traffic across individual connections.


Greater security

Greater security

Use PRTG to detect suspicious traffic, which is indicative of malware.


Hardware, Leistung und andere Details Ihrer Router überwachen

Neben dem Traffic, der über Ihren Router läuft, und der Bandbreite können Sie auch das Gerät selbst überwachen. Mit PRTG behalten Sie Lüfter, Temperatur, Netzteile oder den Speicher Ihres Routers stets im Blick. Auch über Status und Statistiken Ihrer VPN-Verbindung sind Sie dank PRTG im Bilde.

Award winning solution

We work hard on making our software as powerful and easy-to-use
as possible for our customers each and every day.
Of course it makes us proud when we get awards for that.



PRTG: The swiss army knife for sys admins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • New REST API Sensor: Monitor almost everything that provides XML or JSON

German quality

Free Download
  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime



Administrators must compare monitoring tools or search for a free one. There are several suppliers on the market.

PRTG comes with a full range of advantages:

1. Free trial version: PRTG is available in a free trial version. Use this version to get a feel for our network monitoring tool with no risk whatsoever.

2. Over 200,000 administrators: whether in large or small businesses, authorities, colleges or administrations - all around the world, more than 200,000 administrators put their trust in our network monitoring tool, and can therefore also monitor their bandwidth. Read our case studies here.

3. Support: do you have a question? We respond in a jiffy! You can already access a great deal of information online by consulting our FAQs, manuals, videos, webcasts, or knowledge base. You can of course also send us a message. We'll do our best to get back to you within 24 hours on business days.

PRTG – your network monitoring tool

PRTG is the Paessler AG all-in-one network monitoring tool. Our software is used by more than 200,000 administrators worldwide, whether it be to monitor their hardware- and server performance , their virtual environments, or the accessibility of their websites. Use PRTG for database monitoring or sql monitoring.  PRTG is a one fits all network analyzer tool.

Save time, worry, and money. PRTG is configured in a matter of minutes. The trial version is offered free of charge. And you can upgrade whenever you like.


Network Monitoring Software - Version (October 29th, 2019)


Download for Windows and hosted version available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications


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