Network Analysis and Network
Diagnosis with PRTG
A two-minute introduction to the PRTG Network Analysis Tool
Network diagnostics: How to find the needle in the haystack
Network diagnosis is something most administrators dread. With a little luck, the glitch can be found within a few hours. But more often than not, several days are required to rummage through logs and detect the source of the error. It’s like trying to find a needle in a haystack.
PRTG quickly puts you on the right path.
3 steps for performing a network diagnosis:
Narrow the search for errors
Use PRTG to get an overall picture. PRTG lets you monitor complex IT infrastructures in their entirety. A quick glance is all it takes to see which devices and applications are running trouble-free. You’ll gain access to network data from various time periods which will allow you to quickly analyze the functionality of all your components and significantly limit your error search. With the newfound insight, you'll have taken a big step in eradicating the problem.
Use a specialized diagnosis tool
Once you’ve gotten closer to the source of the error and received a good idea from the data gathered by PRTG of where the problem lies, it’s time to deploy an appropriate diagnosis tool – after all, now you know where to look! Many hardware manufacturers (such as HP or Dell) and operating systems (Windows, macOS, and Linux) come with special diagnosis tools that can help you perform detailed troubleshooting. Even diagnostic tools like Wireshark will help detect network connection problems, for example.
Eliminate the errors
Work your sysadmin magic to remove the glitches and get your network back on its feet. You’ll then want to ensure that you are able to identify future network diagnosis problems as quickly as possible by configuring your monitoring accordingly. To do so, look no further than PRTG’s Network Analysis Tool. PRTG’s long-term data capturing and custom alarms in the event of suspicious developments in your network data will allow you to ensure your network functions at 100% efficiency. Thanks to PRTG’s network monitoring, you can work in a proactive manner.
This is what your monitoring dashboard might look like!
A few PRTG sensors that will help you get started at once
What is a sensor?
by Kimberley, Senior System Engineer
What, exactly, is a "sensor" within PRTG? What is a "channel"? This video discusses PRTG sensors and channels, including a few concrete examples of both, to illustrate this fundamental PRTG concept.
Your DNS server is down and you don’t know why? Use our DNS Sensor to monitor response times and the proper resolution of the domain name to quickly get an idea of the possible roots of problems. With our server sensors, you’ll also be able to keep a constant eye on all your servers. If the server goes down, you’ll be notified at once. PRTG offers monitoring sensors for web servers, mail servers, database servers, and more.
Event Log Monitoring
Want to keep an eye on your system’s log files? Then use our Event Log (Windows API) Sensor or WMI Event Log Sensor. In the event of a sudden spike in log entires, PRTG will send you a notification at once. Event log sensors monitor the number of new entries per second. You can filter by log files, event types, sources, messages, etc. With appropriate scripting knowledge and your own, user-defined sensors, you can also have PRTG read and monitor the logs of target systems such as your CDN.
Whether Windows SQL Server, SharePoint, folders, or files: PRTG gives you access to a variety of pre-configured Windows sensors. These sensors rely on WMI (Windows Management Instrumentation) and performance counters. You can also configure the sensors individually. An overview
In the future: Avoid time-consuming network diagnoses with PRTG!
Thousands of sensors for monitoring
PRTG is perfect for both medium-sized companies as well as complex, international IT infrastructures. Thanks to our flexible license model, you can choose a version that best suits what is going on with your own particular network.
By monitoring your network constantly, PRTG provides you with historical data. This data will allow you to quickly narrow the possible cause of the malfunction – such as when you are expanding your network or launching new applications, and disruptions occur at a certain point in time.
PRTG features a custom alarm system. It will send you an alarm any time a certain limit is reached. Because you are notified at the very first sign of a problem, you can promptly take appropriate action. The alarm system is included.
PRTG generates custom reports and sends them to whoever you please. You can signal, for example, that due to increased traffic the IT infrastructure is in need of upgrading.
PRTG comes with extensive technical support! Our support team usually answers inquiries within 24 hours. You will also find helpful information in our manual, knowledge base, and video tutorials.
Want to keep a constant eye on your network traffic,
even while on the go?
PRTG can be installed within minutes and it's compatible with most mobile devices.
Network analysis: Other helpful PRTG sensors
SNMP lets you monitor hardware and software, and keep a constant eye on the performance of your network. PRTG comes with several pre-configured sensors for all the biggest manufacturers, including Cisco, Dell, and HP. More on SNMP monitoring
PRTG’s flow sensors monitor bandwidth and the details of your traffic. Flow technology is primarily used by Cisco routers and switches. PRTG supports all current NetFlow versions. More on NetFlow monitoring
PRTG’s packet sniffing sensors provide in-depth monitoring of your traffic. They let you quickly get to the root of network connection problems. PRTG can filter data according to IP addresses, data types, data packets, and protocols. More on packet sniffing monitoring
Hey Dirk, what do you think about network monitoring?
"Without network monitoring, it can easily take several hours to locate a network error, such as identifying a router which isn't working properly. Costs can quickly pile up due to unused man days. With a monitoring service, the amount of downtime can be minimized and in many cases even proactively eliminated. With our PRTG monitoring tool, we hope to simplify the job of administrators so they can go about their work efficiently and with less stress."
Dirk Paessler, founder, PAESSLER AG
Network analysis and network diagnosis:
Similarities and differences
Network analysis and network diagnosis are often used in the same context.
The two terms, however, do not necessarily mean the same thing.
What is network diagnosis?
A network diagnosis is usually performed if a concrete problem has occurred in the network. Connections are down, the network malfunctions or is slow, or important servers are offline. It’s the sysadmin’s job to find the errors and fix them. There are special tools for network diagnoses, such as those provided by hardware manufacturers or found in virtualization and cloud software. At the same time, diagnosis tools are extremely specific. Administrators need a tool to provide them with an overview and the historical data to carry out an analysis. That’s where PRTG comes in.
Those looking to carry out a network analysis are usually not yet confronted with a specific problem. Most sysadmins are aware that they should be monitoring their networks, for when disruptions arise, they can get to the causes a lot faster. PRTG’s network monitoring software is just what they need. A centralized tool, PRTG allows administrators to monitor their networks, systems, and applications, and therefore discover previously unrecognized interconnections between their various network components.
With the Business Process Sensor, you can summarize the status of several network components into one status. It can also be used to complement network diagnoses by immediately showing you which components might be behind a process malfunctioning. Find examples here.
PRTG is worth it: You’ll optimize your entire IT!
The costs for a one-year PRTG license pay for themselves in an average of only 3 ½ months.
your network more reliable
network management costs
PRTG saves time
spent on network management
Network diagnosis tools:
Windows, Linux, OS
Windows network diagnosis: Time and again, Windows servers and operating systems (including Windows 7, 10, etc.) encounter problems. Their built-in network diagnosis tools can help you uncover these problems – as long as you have a basic overview of your network. Otherwise you are unlikely to have an idea of where to start. PRTG comes with dozens of WMI sensors for Windows systems. You can also use SNMP or Windows performance counters to monitor Windows.
Linux network diagnosis: Linux is used by administrators in a variety of different situations. Because there are so many different Linux distributions, a central overview provided by one tool which can support all these characteristics is all the more necessary. When network problems arise, Linux also offers diagnosis tools which will help PRTG put you on the right troubleshooting path.
macOS network diagnosis: PRTG monitors your network traffic on a permanent basis. Historical data provides you with a long-term database and allows you to constantly optimize your network.
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 servers and entire network. Enjoy a quick overview of your whole infrastructure via our dashboard and app.
PRTG saves worry
Customizing PRTG is a breeze. Getting started or switching from another network monitoring tool is easy thanks to more than 200 sensors and pre-configured device templates.
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.
Tips from our knowledge base
Defining “down” status: Other tips on event log sensors
Excessive bandwidth consumption: See our network analysis tips
PAESSLER AG –
PRTG is the PAESLLER AG's network monitoring tool. Our software is used by more than 200,000 administrators worldwide, whether it be to monitor their hardware and server performance, virtual environments, or the accessibility of their websites. PRTG is a network analysis solution for Windows.
Our network monitoring software, created in 1997, is the brainchild of Dirk Paessler. The software firm is located in Nuremberg, Germany. We are driven by the highest of standards as we continue to perfect our software. And should you ever encounter a glitch, our technical support department generally answers inquiries within 24 hours.
Get started with PRTG's network diagnosis and analysis tool. You'll save time, worry, and money. PRTG is installed in just two minutes. You get 100 free sensors, plenty for small networks. Upgrade whenever you like.
|Network Monitoring Software for Windows - Version 220.127.116.1130 (September 11th, 2017)|
|English, German, Spanish, French, Portuguese, Dutch, Czech, Russian, Japanese, and Simplified Chinese|
|Free for up to 100 sensors (Price List)|
|Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more...|
Supported Vendors & Applications