How can I fix this error 1

Find and fix network errors

As soon as at least two devices capable of data transmission are connected to one another, one speaks of a network. Disturbances can occur within this network for a wide variety of reasons. These range from external problems in routing with geographically separate components to hardware errors and malware present in the system. This results in operational disruptions that can pose a threat to company data and hinder processes.

What are the effects of network errors?

Problems in the business network have many reasons and manifest themselves in different ways. A slowdown in the network can be just as much a sign of an error in the network as the interruption of the data connection to the outside or within the company network. When sending an e-mail, the user receives a message that the message cannot be sent. Communication with other network components such as servers or other PC workstations and via mobile devices such as tablets or cell phones is greatly slowed down or no longer possible in the event of network errors. This is shown by the fact that data cannot be fetched from the corresponding drives or that entered information cannot be saved.


Especially when working with server solutions without PC workstations and centrally managed software, a faulty network is a major problem for a company. Due to the inability to access and transfer data, certain work can no longer be carried out. One of the most dramatic consequences in such cases is the loss of important company data; in the best case, it is sometimes impossible to work. Network failures are critical if the problem is in the area of ​​production software with important measuring points without redundancy. In order to prevent more extensive damage, it is helpful to establish contact with network specialists such as the Diropa team. The complex structure of networks requires the knowledge of technically experienced specialists in order to prevent damage and not tips about articles or news found in Google. Facebook, too, rarely offers satisfactory help for these problems. Trade magazines such as PC-Welt, a practical online guide on the World Wide Web, offer answers for general understanding and some interesting articles as well as helpful tricks on the subject.

What are the most common network errors?

The classic errors that cause a problem in the network include the following possibilities:

  • Physical causes: This type of error includes all hardware defects. It is therefore essential to check adapters, cables, sockets, switches, groundings, etc. regularly. The use of cheap cables should definitely be avoided.
  • addressing: The MAC address or the IP address is set incorrectly.
  • Routing error: IP subnets are not properly connected or the IP routers are not working as specified.
  • Socket addressing: Addressing the wrong server sockets through TCP / UDP ports.
  • Naming services: Name services such as DHCP, ICMP, BOOTP, WINS, DNS or NetBIOS are very error-prone.
  • Application software: Numerous applications on PC workstations slow down the user's work. This is often blamed on the network.

These difficulties cannot be resolved simply through an article on a blog, questions on Facebook or Twitter, or tips from forums. Because recognizing the problem is not enough due to the complexity of networks. Not even if those interested in IT subscribe to every post on this topic in specialist forums and read it carefully. This topic requires practical experience and specialist knowledge in order to carry out the necessary analysis and to find a reliable problem solution.

What are the effects of errors in the network?

Damaged components of the hardware are part of the problems. Regular checks of all hardware components are therefore essential. Packet losses in the course of the transmission, which result in repeated transmissions, so-called retransmissions, are considered to be signs. Evidence is provided by the packet counters on the router and switch in the CRC Errors, Dropped Packets and TCP Retransmissions categories. In addition to faulty partial and double transmission, defective physics can trigger so-called MAC flooding (Wikipedia: MAC flooding) by flooding LAN packets through the switch.

The incorrect addressing of MAC and IP addresses is often due to incorrect entries during the configuration of the name services such as BOOTP, NetBios, DNS or SLP and others. These configuration deficiencies often occur due to too fast domain and host migration and prevent the connection to the Internet.

Network errors caused by routing often occur. These occur when the connection of IP subnets is not carried out correctly or IP routers do not work according to the specifications. In these cases it is impossible for the IP packets to reach the correct recipient. The result is ICMP or TCP error messages.

TCP and ICMP error messages are also produced if the socket addressing is incorrect and the TCP / UDP ports address incorrect server sockets. Another possibility is to address the wrong server using the right sockets. The result is that the connection is not established.

Slowly working PC workstations or delayed printing are important issues in many companies and are seen by users as network problems. Although this can be the case in exceptional cases, in most cases the answers can be found on the user's computer. Downloads that have been carried out and use up resources are often forgotten. Many use complex apps or send oversized files to the printer. All of this puts a strain on the connection. Some apps slow down the response time of applications due to incorrect settings. In this case, IT must be consulted as to whether the application needs optimization by changing the settings.

Many network errors can be avoided if the network configuration is carried out right from the start by specialists such as the Diropa team. Many years of practical experience in a wide variety of networks and reliable support form a solid basis for stable networks at Diropa's network specialists.

Elimination of network errors

Numerous network errors appear immediately after an activity has been carried out by the administrator in the case of configuration changes for the mobile connection to the WLAN or Internet or general parameter changes for the LAN or after an update has been carried out. Only very rarely are the deficits in the Internet connection established by Telekom or other providers of external connections. If anything is unclear, the first step should be to contact the relevant network admin. Because the failure is not always noticed immediately by the IT staff or EDP technicians. A prompt reaction by the user helps to isolate the source of the error quickly and to solve the problem. At the same time, the damage to the company is minimized.

Professional IT networks have implemented analysis tools that draw attention to weak points during operation, check that they are functioning correctly and monitor the connection to the Internet. Such an analysis tool helps with administration and supports the administrator so that the network works as reliably as possible.

In order to enable reliable communication between the various components of an IT system, certain rules were defined decades ago as part of the IOS / OSI model. This model regulates the communication between the various IT devices and defines the targeted use of protocols such as TCP / IP or UDP. These are required for the connection to the Internet as well as for the connection within internal networks.

More and more powerful tools have been developed over time to track network activity; so-called LAN analyzer. These support the administration of the IT network and error analysis. The tasks of these tools include the analysis of the logs, the load determination and the observation of the sending and receiving of data packets, which are displayed as a log. As an important part of the LAN analysis, they are preferably used by IT specialists to check the functionalities.

The LAN analysis as part of the network analysis

It is not always the classic and easy-to-fix errors already mentioned that cause problems in the network environment. Because numerous sources of error can only be identified and rectified using a meaningful LAN analysis. Manual analysis is hardly possible, especially in extensive company networks with several locations and special components. A special analysis requires a high level of professional competence and experience, which the Diropa team brings with it due to its many years of experience in this area.

Basically, a distinction is made between two forms of analysis. In the Online analysis analysts look for key insights during real-time operations.

The Offline analysis works with data information recorded during operation. The two analyzes complement each other in troubleshooting, as the analysis created in operation gives a rough overview and, in the best case, enables an immediate reaction. The offline analysis, in turn, presents the data information with a time delay, but provides much more comprehensive information.

How is the LAN analysis carried out?

In the first step, the transmission routes are considered. This includes the control of the physics, which is presented in the form of cables, adapters, etc. Further activities are the control of the transmission path and the search for interruptions and packet loss. If the error lies in this range, changing a cable can be the solution to the problem.

If the automatic analysis does not reveal any sources of error, the dialog behavior, the name services, the application behavior and the response times are analyzed. As part of the comprehensive system analysis, the Windows registry of the client and server is carefully read and checked, among other things. A procedure that requires a great deal of specialist knowledge and experience in order to interpret the information data received accordingly and to take the correct measures to solve the problem.

More precisely, only a topic for specialists

Problems in the IT network of companies can have serious consequences if there is no immediate response and a satisfactory solution is found. Due to the enormous complexity of modern company networks and different external and internal connection types such as Internet and LAN, analytical understanding and experience in the field of network structures are required in order to start a targeted analysis and evaluate it accordingly. For this reason, in the event of a problem in the company network, a direct line to specialists such as Diropa is the first choice in order to protect data security and ongoing company processes and the network functions reliably.

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Author: DI Roland Paier