Chapter 12 covers topic 2.5 from the official CompTIA Network+ blueprint: Given a scenario, troubleshoot common router and switch problems. This chapter covers different issues that might appear during router and switch configuration and operation processes, including switching loops, improper cables, port configuration, VLAN assignment, power failure, missing routing information, duplicate IP addresses, and wrong DNS servers.
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Troubleshooting Switching Loops
Troubleshooting Cabling Issues
Troubleshooting Port Configuration
Troubleshooting VLAN Assignment
Troubleshooting MTU Issues
Troubleshooting Power Failures
Troubleshooting Routing Issues
Troubleshooting Module Issues
Troubleshooting Subnet Mask and Gateway Issues
Troubleshooting Duplicate IP Addresses
Troubleshooting DNS Issues
Summary
Chapter 12 Quiz