7 Frequent Network Problems and Their Solutions

Introduction

Emerging technologies and the growing number of hosted services have revolutionized network and application infrastructures. These advancements provide consumers with more options than ever before but also increase our reliance on a dependable network to ensure these vital programs function seamlessly. Network problems or errors can have severe consequences. Thus, it's essential to invest in and maintain the right network infrastructure and services to ensure the smooth operation of our network and applications.

This blog post will cover some of the most common network issues and their solutions. Before delving into the specifics of network errors, let's first explore computer network issues and their effects on users and businesses.

What are Network Issues?

Network issues are problems that impact a network's performance, reliability, or security. They can lead to frustration, downtime, and reduced productivity for users and businesses. Some network issues are straightforward to resolve, while others demand more expertise and resources.

Types of Network Issues

• Bandwidth Issues

• DNS Issues

• IP Address Conflict

• Connectivity Issues

• Wi-Fi Interferences

• Security Issues

• High CPU Usage issue

We have discussed these common network issues along with their solutions below.

Network Issues and Their Solutions

Here are some common network issues along with their solutions:

1. High Bandwidth Usage

Bandwidth is the speed at which data can be transmitted over a network like the Internet, expressed in megabits per second (Mbps).

With greater bandwidth, more devices can connect to your network without hindering data flow. Network congestion occurs when one or more users, or particularly large applications, consume excessive bandwidth by downloading many files simultaneously.

High bandwidth usage can lead to network congestion, resulting in insufficient bandwidth for other parts of your network. This can cause issues such as decreased download speeds. Some causes of high bandwidth usage include:

• Large downloads

• Latency

• Packet loss

• Video streaming

• Large applications

• File sharing

So, how can high bandwidth usage be reduced? Below is the solution.

Nerdcore PC Solution

Network performance monitors (NPMs) can track bandwidth usage and identify any disruptions in data transfer. Steps to reduce high bandwidth usage include:

• Look for Malware

• Use Quality of Service (QoS)

• Identify bandwidth hogs

• Limit VoIP network usage

2. DNS Issues

The Domain Name System (DNS) is an internet directory that links domain names with IP addresses. DNS problems are common and often go unnoticed. DNS issues usually mean a loss of internet or network connection.

Your site might appear online and functional for you but offline for your visitors simultaneously. DNS issues can stem from various factors, such as:

• Bad configurations

• High DNS latency

• High TTL values

• Hardware or network failures

When customers can't access your website, the resulting loss of internet connectivity can severely impact your business. Quickly identifying and fixing DNS issues is crucial, as even a few hours of downtime can have serious repercussions.

Solution

7 Frequent Network Problems and Their Solutions

DNS network issues can be resolved by following these steps:

• Flush DNS Cache: Use the command “ipconfig /flushdns” in CMD for Windows and “sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder” in the terminal app for MAC.

• Update or reinstall network drivers: Network drivers may become corrupted, or newer versions might be needed for optimal performance, so routine updates are recommended.

• Change your device’s DNS server: Switch to a different DNS server like Google DNS (8.8.8.8 and 8.8.4.4) or OpenDNS (208.67.222.222 and 208.67.220.220).

• Restart your router: Reset it to factory settings and reconfigure it with the correct DNS settings.

• Adjust firewall settings: Firewalls can sometimes block specific DNS addresses, so it's advisable to permit access to the DNS servers or domains you wish to visit in your firewall settings.

3. IP Address Conflict

An IP address conflict arises when two or more devices share the same IP address on the same network. An IP address facilitates communication and data exchange with a specific device or network. Each device has a unique IP address. If two devices share the same IP address, they cannot communicate properly, leading to network errors or crashes. Causes of IP address conflicts include:

• A user manually assigns an IP address already in use by another device on the network.

• A device obtains an IP address from a DHCP server already in use by another device on the network.

• A device has a static IP address that isn

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• 't updated when joining a different network or when the network configuration changes.

Solution

Here, we outline several essential steps to resolve an IP address conflict. These include:

• Release and renew the IP address: Open CMD in Windows and use the commands “ipconfig /release” followed by “ipconfig /renew”.

For Mac users, navigate to the "Internet and Network" section, choose the WIFI or ethernet connection you are using, then click on advanced settings. Next, go to the TCP/IP tab, renew the DHCP lease, and restart the system. A picture is provided below for clarity.

Automatic IP address from DHCP server: Configure your device to obtain an IP address automatically from a DHCP server instead of using a manual or static IP address.

For Windows: Below with the help of the image you can choose an automatic IP address from the DHCP server

7 Frequent Network Problems and Their Solutions

• Reserving IP address: Assign a fixed IP address to your device in the router's settings to ensure it doesn't get allocated to another device.

4. Connectivity and Interference Issues in the Wireless Network

One of the most common network problems today involves Wi-Fi. Wi-Fi connectivity problems occur when your device cannot connect to the network or the connection is unstable. Several factors can cause Wi-Fi connectivity issues, including:

• Congestion

• Distance

• Interference

• Hardware or Software

Solution

Here are some steps to help you connect to the wireless network more easily:

• Restarting the router: Glitches often cause Wi-Fi connectivity problems, so restarting the router is a good first step.

• Forgetting the Wi-Fi network: Remove the Wi-Fi network from your device and reconnect using the correct password and settings.

• Changing Wi-Fi frequency and channel: Interference can cause connectivity problems, so consider changing your Wi-Fi channel or frequency on your router.

• Updating device firmware: Always keep your device's drivers and firmware updated. Outdated drivers can cause compatibility or performance issues, leading to Wi-Fi connection problems.

Now, let's discuss Wi-Fi interference.

5. Wi-Fi Interference

Wi-Fi interference occurs when your wireless network signal is disrupted or weakened. Signs of interference in wireless networks include:

• Poor Wi-Fi signal strength even when near the router.

• Slow Internet connection for Wi-Fi users.

• Slow Wi-Fi-based file transfers.

• Inability to connect Bluetooth or Wi-Fi devices despite being close to the router.

• Intermittent Wi-Fi connection drops.

Solution –

Wi-Fi interference can be addressed by:

• Repositioning the router

• Selecting the appropriate Wi-Fi channel

6. Network Security Issues

Network security issues can compromise the confidentiality, integrity, or data of a network, leading to problems such as:

• Unauthorized access

• Data theft

• Data loss

• Data corruption

Some attacks that can cause network security issues include:

• Phishing

• Malware

• DDoS

• Brute force

• Man-in-the-Middle

Solution

Protecting yourself from such attacks is crucial for safeguarding your data and resources. Some ways to address network security issues include:

• Using antivirus software, firewalls, and VPNs to protect devices and networks.

• Regularly updating your OS, application drivers, and security patches provided by vendors.

7. High CPU Usage

The Central Processing Unit (CPU) is essential for executing program instructions. As devices handle more tasks, the risk of network issues increases, potentially reducing CPU efficiency.

High CPU usage often results from network traffic bottlenecks. When processes take longer or when there is an unusual increase in network packet transmission, CPU usage may spike significantly.

Other causes of high CPU usage include:

• Background processes

• Viruses

• System Idle processes

• Svchost.exe (netscvs) Process

Solution

Avoiding CPU-intensive tasks helps keep your machine running smoothly. However, system glitches can sometimes cause issues. Here are general steps to address high CPU usage:

• Identify the program or virus consuming the most CPU by opening the task manager (ctrl + alt + del). Check the processes section to see which app uses the most CPU. Right-click and end the process to free up CPU usage. It's advisable to disable unused startup apps for faster boot times and to free up CPU space.

• If you're dealing with malware or a virus, always use a well-regarded antivirus to identify and remove the virus that is unnecessarily consuming CPU resources.

• If a legitimate program is causing high CPU usage, consider updating it to the latest version or checking for any patches or fixes from the developer. Outdated or flawed software can sometimes lead to compatibility issues or performance problems with your system.

These are some common computer network issues and their solutions.

Common Causes of Network Problems

Network problems can stem from various sources, including:

• Hardware faults

• Overloaded networks

• Software bugs or misconfigurations

• Physical obstructions and interferences

• Security settings like VPNs or firewalls

Basic Network Troubleshooting Steps

When network issues occur, you can follow these basic troubleshooting steps:

1. Check physical connections: Ensure all cables are properly connected.

2. Then, force restart the routers and other affected devices.

3. Ensure all network devices have the latest firmware updates.

4. Manually double-check every setting on each device.

Advanced Solutions for Persistent Network Issues

For complex issues that continue, you should consult a networking professional or consider these steps:

• Upgrading to enterprise-grade networking hardware

• Implementing network segmentation

• Using load balancers

Frequently Asked Questions

Q1. What is a network issue?

A network issue is a problem that affects the communication or connectivity between devices or systems on a network. It can be caused by many factors, such as physical damage to the networking equipment, viruses, degraded performance, data loss, or service interruptions for the users or applications that rely on the network.

Q2. How do I resolve network issues?

Resolving network issues depends on the specific problems you're facing. For example, if you're having trouble connecting to the internet, you should restart the modem or router or check if the drivers are updated. More complex issues might require regular monitoring or hardware replacement.

Q3. What are the 10 common network problems?

The most common computer network issues are:

• Slow network performance

• DNS issues

• Firewall issues

• Hardware failures

• Network cable issues

• VPN issues, etc.

Q4. What causes network problems?

Network problems can be caused by various factors, such as hardware failures, software errors, configuration issues, or environmental interference. Identifying the source of the issue and applying appropriate solutions can easily rectify these problems.

Conclusion

Your network is always susceptible to a wide range of network issues. Network problems are more frustrating than ever due to the complexity and scale of today’s network infrastructures. Companies cannot afford to waste time and resources dealing with computer network issues that can impact their productivity, revenues, users, and reputation. Moreover, being familiar with the most common network issues can help you prepare for any problems that may arise.