How would you troubleshoot a network connectivity issue between two devices?

To troubleshoot a network connectivity issue between two devices, a Network Engineer L1 can follow the below steps:

1. Start by checking the physical connections between the two devices. Ensure that cables are properly connected and not damaged.
2. Verify that both devices have the correct network settings including IP address, subnet mask, gateway, and DNS settings.
3. Use command line tools such as ping or traceroute to test the connectivity between the two devices and identify where the connection is failing.
4. Check for any network configuration issues such as firewall rules, routing problems, or VLAN configurations that might be causing the connectivity issue.
5. Use network monitoring tools to analyze traffic patterns and identify any abnormal behavior that could be affecting the connection.
6. Consider checking for any recent changes in network configuration or hardware that could be linked to the connectivity problem.
7. Seek assistance from colleagues or consult online resources such as networking forums or knowledge bases for troubleshooting tips and solutions.

By following these steps, a Network Engineer L1 can effectively troubleshoot and resolve network connectivity issues between two devices.