11.4 Network Troubleshooting
11.4.1 Troubleshooting Methodologies
- 11.4.1.1 Basic Troubleshooting Approaches
- 11.4.1.2 Resolve or Escalate?
- 11.4.1.3 Verify and Monitor Solution
- 11.4.1.4 Activity – Order the Troubleshooting Steps
11.4.2 Troubleshoot Cables and Interfaces
- 11.4.2.1 Duplex Operation
- 11.4.2.2 Duplex Mismatch
11.4.3 Troubleshooting Scenarios
- 11.4.3.1 IP Addressing Issues on IOS Devices
- 11.4.3.2 IP Addressing Issues on End Devices
- 11.4.3.3 Default Gateway Issues
- 11.4.3.4 Troubleshooting DNS Issues
- 11.4.3.5 Lab - Troubleshooting Connectivity Issues
- 11.4.3.6 Packet Tracer - Troubleshooting Connectivity Issues