How to use the traceroute command to troubleshoot network issues on Ubuntu?

@georgiana.senger 

The traceroute command is a useful tool for troubleshooting network issues on Ubuntu, as it allows you to trace the route that packets take from your computer to a destination host. Here are the steps to use the traceroute command on Ubuntu:

1. Open a terminal window on your Ubuntu system.
2. Type traceroute followed by the IP address or domain name of the destination host. For example, if you want to trace the route to Google's DNS server at IP address 8.8.8.8, you would type traceroute 8.8.8.8.
3. Press Enter to run the command. The output will display the route that packets take from your computer to the destination host, along with information about the IP addresses of the routers that the packets pass through.
4. Look for any problems in the output, such as high latency or packet loss. These issues can indicate network congestion or connectivity problems.
5. If you encounter any issues, you can try running the traceroute command with the -I option to use ICMP packets instead of UDP packets. This can help you diagnose issues with specific types of traffic.
6. You can also try running the traceroute command with the -T option to use TCP packets instead of UDP packets. This can help you diagnose issues with TCP connections.
7. If you need more detailed information about the route that packets take, you can use the mtr command instead of traceroute. The mtr command provides real-time statistics about the latency and packet loss of each hop along the route, which can help you pinpoint the source of network issues more quickly.

Overall, the traceroute command is a useful tool for troubleshooting network issues on Ubuntu, and can help you identify problems with network connectivity, latency, and packet loss.