Diagnosing and resolving problems is an essential skill of network engineers. A particular problem can be diagnosed and sometimes even solved in many different ways. By using a structured approach to the troubleshooting process, you can greatly reduce the average time it takes to diagnose and solve a problem. This course describes various approaches to troubleshooting network connectivity issues. As with IPv4 networks, problems will arise in IPv6 networks. You will be required to troubleshoot these problems, and you can use the same structured approach as troubleshooting IPv4 networks. However, because there are differences in IPv4 and IPv6 operations, troubleshooting IPv6 networks has its own specifics. For example, instead of verifying ARP entries in IPv4, you have to verify neighbor discovery entries in IPv6. This course describes how to verify end-to-end IPv4 and IPv6 connectivity. The course also describes how to verify current paths in networks, DNS and default gateway settings, and ACLs.

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