A network administrator is troubleshooting an issue where hosts on a local subnet cannot reach a remote database server across a routed network boundary. Place the following diagnostic and remediation steps in the correct sequential order according to standard network troubleshooting methodology.
- 1Inspect host IP configuration using network utilities to confirm the IP address, subnet mask, and default gateway settings are properly assigned.
- 2Establish a hypothesis that an Access Control List (ACL) implicit deny rule on the intermediate router is dropping outbound traffic.
- 3Execute a path trace utility and inspect router ACL hit counters (`show ip access-lists`) to isolate the dropping interface.
- 4Modify the ACL configuration on the router by inserting a permit rule prior to the explicit/implicit deny statements.
- 5Verify full end-to-end application connectivity from the host to the database server and document the ACL modification in the change log.
Cevap
The correct order follows the structured troubleshooting process: 1) Verify local host network configuration (IP/gateway), 2) Formulate a theory of probable cause regarding ACL filtering, 3) Test the theory using path tracing and ACL hit counters, 4) Implement the corrected ACL rule, 5) Verify end-to-end reachability and document the outcome.
The standard network troubleshooting workflow demands starting with local host checks (identifying the problem), forming a specific hypothesis (such as ACL filtering), empirically testing the hypothesis via diagnostic utilities (`traceroute` and hit counters), applying the corrective configuration change, and finally verifying end-to-end functionality while documenting results.
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Anahtar Kavram
Sequential application of CompTIA troubleshooting methodology to gateway and ACL failures