文档介绍：16. Troubleshooting IPv6 Routing
This chapter covers the following exam topics:
Troubleshooting
Identify and work problems
Troubleshoot and resolve routing issues
Routing is enabled
Routing table is correct
Correct path selection
The first step in troubleshooting working technology is to understand what should happen
under normal conditions. Then, the troubleshooting process pare the work behavior
with what should be happening, looking for differences, until the root cause of those differences can
be found.
This chapter begins with a review of the ICND1 book’s discussion about how IPv6 works normally.
Thankfully, IPv6 has many similarities to IPv4, other than the obvious differences in addressing. This
section builds on those similarities and summarizes the core features of IPv6 to set the stage for a
discussion of troubleshooting IPv6.
The second major section of the chapter examines a variety of problems that can occur in an IPv6
network. All these problems take a part of IPv6 that should work normally and show some issues that
prevent that function from working.
“Do I Know This Already?” Quiz
This chapter does not have a “Do I Know This Already Quiz” because the chapter focuses on
troubleshooting. The troubleshooting chapters include several hints and tips that show how to solve
particular problems; so even if you know the topics well, a quick reading of the chapter should be
useful. For these reasons, the troubleshooting chapters do not include a “Do I Know This Already?”
quiz. However, if you feel particularly confident about the IPv6 features covered in this book and in
the NA ICND1 100-101 Official Cert Guide, feel free to move to the “Exam
Preparation Tasks” section near the end of this chapter to bypass the majority of the chapter.
Foundation Topics
Normal IPv6 Operation
To be ready to troubleshoot an IPv6 problem, you have to remember many facts about how IPv6
works. Thankfully, many IPv6 concepts work much like IPv4, bu