Optimize High Traffic Networks with PRTG sFlow Monitoring

  • PRTG comes with customizable thresholds for PROMPT notifications in the case of disruptions
  • PRTG offers a QUICK overview of your traffic
  • PRTG features Smart Setup and Auto Discovery for EASY installation
  • PRTG provides FLEXIBLE upgrades
  • PRTG upgrades can be CUSTOMIZED with a few scripts 


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100 Sensors, perfect for small networks

Effective traffic analysis of the industry standard sFlow




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 ...

Productivity is the Alpha and the Omega

When heavily-utilized computer networks become slower or crash, corporate productivity is impaired, often resulting in financial losses.

Networks which quickly and accurately process and exchange data are an absolute must, and can guarantee trouble-free workflows and the proper “time to market” of your product. For high-traffic networks, it is therefore a good idea to monitor data traffic and available bandwidth. To do so, you can use the industry standard sFlow, and monitor professionally with PRTG.


sFlow technology

sFlow works similarly to Cisco’s NetFlow, and was first introduced by HP. It stands for “sampled flow,” and uses statistical samples of data traffic to ensure scalability for interfaces with large amounts of data.

sFlow technology puts little strain on the CPU load and data line, and allows for the collection of detailed data. Because PRTG fully supports sFlow Version 5 (the most common version), switches and routers supplying data via sFlow can be monitored with a great deal of ease. PRTG offers several possibilities for individually processing the bandwidth consumption data that is gained as a result of its monitoring, as well as for the data’s subsequent presentation. PRTG lets you configure your dashboard so you can keep a constant eye on your data consumption!


Detect causes of traffic

With 24/7 network monitoring, you can identify the major causes of traffic and eliminate bottlenecks. PRTG’s data analysis even allows for suspicious traffic to be detected. The combination of sFlow and PRTG effectively prevents downtime and provides valuable indicators which will enable you to optimize the overall performance of your network.

With PRTG, everyone will work with peace of mind.

Here's what sFlow Monitoring looks like in PRTG


Network Monitoring Software for Windows - Version (September 11th, 2017)


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3 statistics collected by PRTG for your sFlow monitoring


Bandwidth consumption for individual connections and the entire network



Network activities and causes of traffic according to addresses, applications, and protocols



Toplists for a quick overview of the evolution of traffic over various periods of time



How sFlow monitoring works

The sFlow protocol is an industry standard for monitoring data packets in computer networks. Bandwidth utilization data is recorded and summarized inside the router or switch of the device (these processes are referred to as “flows”), while relevant information is sent as UDP packets to PRTG for statistical processing and presentation. With sFlow, you won’t analyze all your data traffic, but only every nth data packet. This method is called “sampling,” and is obligatory for sFlow. With NetFlow, sampling can be configured as required.

When it comes to monitoring bandwidth in high-traffic networks, flow monitoring is recommended the most, for in general it uses very little CPU and can provide in-depth data analysis while consuming minimal amounts of bandwidth.

To use sFlow monitoring, your network device must support sFlow version 5 and be configured to allow flow data to be sent to PRTG.

Your network traffic at a glance
– even on the go

PRTG can be installed within minutes and it's compatible with most mobile devices.


6 Advantages of PRTG


With PRTG, you’ll automatically be informed of network failures and protocol errors.


Speed up troubleshooting

Promptly fix errors and prevent network crashes.


Stabilize your network

Reduce unnecessary traffic and quickly scale available bandwidth.


Increase productivity

Speed up company processes by optimizing bandwidth. Maximize service availability.


Simplify Analyses

Clear and concise overviews of traffic make it easier to draw conclusions.


Improve security

Discover malware and detect suspicious traffic.

PRTG simplifies your day

Our monitoring software works for you and promptly notifies you of potential issues.
It frees you to concentrate on your day-to-day tasks with peace of mind.

PRTG saves time

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

PRTG saves worry

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

PRTG saves money

80% of our customers report substantial or even exceptional network management cost savings. Our customers report that their PRTG licenses have paid for themselves in an average of 3 ½ months.


“The greatest advantage of PRTG? You get to rest easy.“

Steffen Ille, Bauhaus-University of Weimar, Germany.

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

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.





With PRTG, Paessler AG offers a powerful, affordable and easy-to-use unified monitoring tool. Over 200,000 administrators worldwide use our software, whether it be to monitor their server performance, virtual environments, or even the accessibility of their websites. PRTG is a network analysis solution for Windows.

Our network monitoring software was created in 1997 by Dirk Paessler. We are an established software company with headquarters in Nuremberg, Germany. We place great value on our high standards and never stop developing our software. And if ever there is an issue, our support team usually responds within 24 hours (except weekends). 

Get started with sFlow monitoring with PRTG. You'll save time, worry, and money. PRTG is installed in a matter of minutes. Enjoy 100 free sensors, plenty for small networks. Upgrade whenever you like.

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