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Module 9: Basic Router Troubleshooting
Module Overview |
9.1 | Examining the Routing Table
9.1.1 | The show ip route Command
9.1.2 | Determining the gateway of last resort
9.1.3 | Determining route source and destination
9.1.4 | Determining L2 and L3 addresses
9.1.5 | Determining the route administrative distance
9.1.6 | Determining the route metric
9.1.7 | Determining the route next hop
9.1.8 | Determining the last routing update
9.1.9 | Observing multiple paths to destination
9.2 | Network Testing
9.2.1 | Introduction to network testing
9.2.2 | Using a structured approach to troubleshooting
9.2.3 | Testing by OSI layers
9.2.4 | Layer 1 troubleshooting using indicators
9.2.5 | Layer 3 troubleshooting using ping
9.2.6 | Layer 7 troubleshooting using Telnet
9.3 | Troubleshooting Router Issues Overview
9.3.1 | Troubleshooting Layer 1 using show interface
9.3.2 | Troubleshooting Layer 2 using show interface
9.3.3 | Troubleshooting using show cdp
9.3.4 | Troubleshooting using traceroute
9.3.5 | Troubleshooting routing issues
9.3.6 | Troubleshooting using show controllers serial
9.3.7 | Introduction to debug
Module Summary |
Module Quiz |

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