How do I troubleshoot intermittent network connectivity issues in Linux?

How to troubleshoot network connectivity with Linux server

1. Check your network configuration.
2. Check the network configuration file.
3. Check the servers DNS records.
4. Test the connection both ways.
5. Find out where the connection fails.
6. Firewall settings.
7. Host status information.

How do you troubleshoot network drops?

Follow these network troubleshooting tips and you’ll be up and running in no time.

1. Check Your Settings. First, check your Wi-Fi settings.
2. Check Your Access Points.
3. Go Around Obstacles.
4. Restart the Router.
5. Check the Wi-Fi Name and Password.
6. Check DHCP Settings.
7. Update Windows.
8. Open Windows Network Diagnostics.

How do I find network interface errors in Linux?

Displaying show dropped packets per interface on Linux using the netstat

1. To display summary statistics for each protocol, run: netstat -s.
2. Show tcp stats. netstat –statistics –tcp.
3. Display udp stats. netstat –statistics –udp.
4. Building dropwatch.

How do I troubleshoot a Linux server is down?

How To Troubleshoot When your site is down on a Linux Server

1. Step 1 : Check the server status.
2. Step 2 : Monitoring your server.
3. Step 3 : Check the Logs.
4. Step 4 : Make sure your web server is running.
5. Step 5 : Verifying the Syntax of Web server.
6. Step 6 : Is your Database back-end running Fine.

How do I get Tcpdump in Linux?

Most OS have tcpdump command pre-installed, if it is not installed you can install using following commands.

1. sudo yum install tcpdump (RedHat based Linux OS)
2. sudo apt-get install tcpdump (Ubuntu/Debian OS)

How do I troubleshoot intermittent Internet connection?

Unplug the modem’s power cord, wait 30 seconds, and then plug it in again. Wait a few minutes and try using an Internet-connected device. You can find more detailed instructions here. Restarting the phone, computer, or other personal device that is experiencing the intermittent connection might correct the issue.

What are the network troubleshooting commands?

You can run common network troubleshooting commands such as arp, ping, ping6, traceroute, traceroute6, NSlookup, and AvgRTTs from the admin console. You can use these connectivity tools to see the network path from the system to a specified server.

How do I know if my NIC card is bad Linux?

To debug the NIC you can do the following:

1. check the dmesg log for messages about the NIC.
2. confirm the configuration information on ifconfig for the NIC.
3. use ethtool eth0 to confirm NIC’s healthy and functioning normally.

How do you troubleshoot and fix performance issues in Linux?

Linux Performance Tools To Troubleshoot Problems

1. top command. The top program provides a dynamic real-time view of a running system.
2. sar command. The sar command is performance monitoring tool.
3. vmstat command.
4. iostat command.
5. free command.

What are the different types of troubleshooting?

Here we will explore the different kinds of troubleshooting steps and the tools we use for fault detection and closure of the same.

• Troubleshooting IP Problems.
• Troubleshooting Local Connectivity Issues.
• Correcting the Repetitive IP address Entry Issue.
• Troubleshooting Physical Connectivity Issues.