Summary

Did you read Chapters 3, 4, and 5 and understand everything on the first pass? If so, that is fantastic—congratulations! The thing is, you probably got lost a couple of times—and as I already mentioned, that’s what usually happens, so don’t stress. Don’t feel bad if you have to read each of these chapters more than once, or even 10 times, before you’re truly good to go.

This chapter provided you with an important understanding of Variable Length Subnet Masks. You should also know how to design and implement simple VLSM networks and summarization.

You should also understand the Cisco troubleshooting methods. You must remember the four steps that Cisco recommends you take when trying to narrow down exactly where a network/IP addressing ...

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