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.Learning Objectives
- Describe how to troubleshoot loss of end-to-end connectivity for IPv4
- Describe end-to-end connectivity troubleshooting tools
- Identify the guidelines for duplex configuration
- Distinguish between the types of routes
- Identify the commands to verify the presence of a default gateway
- Identify the commands to troubleshoot end-to-end connectivity caused by ACL issues
- Describe IPv6 unicast addresses and EUI-64 interface ID assignment
- Sequence the steps to troubleshoot failed end-to-end connectivity for IPv6
- Describe how to troubleshoot the components involved in IPv6 end-to-end connectivity
Anyone wishing to obtain Cisco Certified Network Associate (CCNA) 200-120 certification that validates the knowledge and skills required to install, operate, and troubleshoot a medium-sized network, including connecting to a WAN and implementing network security. Interconnecting Cisco Network Devices Part 2 (200-101 ICND2) is an essential course for students preparing for the CCNA Routing and Switching certification or the ICND2 certification. Students pursuing the CCNA Routing and Switching certification should attend parts 1 & 2 of the ICND course.
Network administrators, network engineers, network managers, network designers, and project managers. Familiarity with network fundamentals, implementing local-area networks, Internet connectivity, managing network device security, implementing WAN connectivity and basic IPv6 connectivity is recommended.