A junior technician was adding a route to a LAN router. A traceroute to a device on the new network revealed a wrong path and unreachable status. What should be done or checked?

When a traceroute to a device on a new network is showing a wrong path and unreachable status after a junior technician added a route to a LAN router, the following should be done or checked:

1. Check the Configuration of the New Static Route:
   • Ensure that the IP address and subnet mask for the new route are correctly entered.
   • Verify that the next-hop address or exit interface is correctly specified.
   • Check for any typographical errors in the route command.
2. Check the Configuration of the Exit Interface on the New Static Route:
   • Confirm that the interface used as the exit interface for the static route is up and configured correctly.
   • Make sure the interface is not administratively down.
3. Verify Routing Table and Route Precedence:
   • Look at the routing table to confirm that the new static route is present and has the correct metric.
   • Check for any more specific routes or overlapping routes that might take precedence over the new route.
   • Make sure there are no incorrect routes that could be causing the traffic to take a wrong path.
4. Check for Conflicting Routes:
   • Ensure there is no conflicting static route or dynamically learned route that could be directing traffic to an incorrect destination.
5. Review the Default Route:
   • While verifying that there is not a default route in any of the edge router routing tables might not directly resolve the issue, it is important to ensure that the default route is correctly configured and not inadvertently directing traffic intended for the new network to the wrong destination.

Creating a floating static route or adjusting the Administrative Distance (AD) of an existing floating static route might not be relevant unless there is a need for redundancy or there are multiple paths to the destination network. Floating static routes are typically used as a backup in case the primary route fails, not as a primary means of directing traffic.

Given the described situation, the most appropriate action would be to check the configuration of the exit interface on the new static route, ensuring that the route is entered correctly and that the routing table reflects the intended path.