8. A8: Ensure there is no typo in the route configuration. Verify that the next-hop is reachable.
9. A9: Check for any physical issues or interface flapping. Investigate stability on
Here's the answer key for questions 9 to 50:
### Answer Key (Q9 - Q50)
9. A9: Check for any physical issues or interface flapping. Investigate stability on the interfaces and make sure that there are no intermittent connection problems.
10. A10: Configure two static routes with equal administrative distance and next-hop IPs on Router A pointing to Office C. Verify that both routes are active and visible in the routing table.
ip route 192.168.3.0 255.255.255.0 10.1.2.1
ip route 192.168.3.0 255.255.255.0 10.1.1.2
11. A11: A higher administrative distance means the route is less preferred. If another route with a lower administrative distance exists, Router C will not use the static route to Office A.
12. A12: Verify that the static route has a lower administrative distance than any competing dynamic routes. Ensure the next-hop is correctly reachable.
13. A13: Verify the connectivity from Office A to Office C's router interface by checking ARP entries and pinging the interface IP directly. Also, check for any ACLs blocking traffic.
14. A14: A wrong subnet mask can cause the static route to fail in matching the correct destination network, leading to connectivity issues between Office B and Office A.
15. A15: The static routes might not have been saved to the startup configuration. Use
copy running-config startup-config to save the configuration permanently.16. A16: Check if the new static route overlaps or conflicts with existing routes. Also, ensure that the new route is configured correctly.
17. A17: Ensure that Router B has a correct route to Office A's LAN, and verify that no ACLs are blocking the traffic. Additionally, ensure that the next-hop IP is reachable.
18. A18: Remove or correct the black hole route that sends traffic to a non-existent or incorrect next-hop. Verify the routing table and adjust static routes as needed.
19. A19: Ensure that a redundant route exists and is active in the routing table. Verify the failover configuration and check the interfaces for connectivity.
20. A20: Use
show running-config to identify duplicate static routes and remove the unnecessary one with no ip route <route>.21. A21: Verify that both static routes have the same administrative distance and next-hop configurations. Also, ensure that load balancing is enabled.
22. A22: Adjust the static route or modify the dynamic routing protocol's administrative distance to resolve the conflict. Ensure proper route preferences.
23. A23: Check if the interface is operational and that the static route pointing to it is correct. Also, verify that the next-hop is reachable.
24. A24: The incorrect next-hop IP will prevent the route from being used, leading to traffic not reaching Office C. Correct the next-hop IP in the static route configuration.
25. A25: Ensure that the static route on Router A is configured to be redistributed into the routing protocol used between Router A and Router C.
26. A26: Trace the route using
traceroute to identify the loop and adjust the static routes on both Router A and Router B to prevent looping.27. A27: Investigate the path that the traffic takes by using
traceroute. Check for any issues in the new route's next-hop and ensure that there are no physical link issues.28. A28: The static route may not have been configured with a valid next-hop or the interface associated with the static route may not have come back up properly. Ensure interface stability.
29. A29: Verify ARP and routing table entries. Ensure that the next-hop is reachable and that there are no issues with DNS resolution if used.
