2 Planning a TCP/IP Network

Infrastructure

Exam Objectives in this Chapter:

■

Plan a TCP/IP network infrastructure strategy.

❑

Analyze IP addressing requirements.

❑

Plan an IP routing solution.

❑

Create an IP subnet scheme.

■

Troubleshoot TCP/IP addressing.

❑

Diagnose and resolve issues related to client computer configuration.

❑

Diagnose and resolve issues related to DHCP server address assignment.

Why This Chapter Matters

Assigning appropriate IP addresses to individual computers is an essential part of

the network design process. Using unregistered IP addresses is the most effective

means of preventing unauthorized access to your network from the Internet, but

you must also understand when using registered IP addresses is required. Learn-

ing how to subnet a network address and calculate IP addresses and subnet

masks not only prepares you to design a network, it also helps you troubleshoot

problems related to IP addressing and TCP/IP configuration.

Routing is another TCP/IP function that is essential to network design. Under-

standing the functions of routers and switches helps you choose the correct com-

ponents for a network, learn how the Internet functions, and deal with problems

involving internetwork communications.

Lessons in this Chapter:

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Lesson 1: Determining IP Addressing Requirements . . . . . . . . . . . . . . . . . . . 2-3

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Lesson 2: Planning an IP Routing Solution . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

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Lesson 3: Planning an IP Addressing and Subnetting Strategy . . . . . . . . . . . 2-25

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Lesson 4: Assigning IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

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Lesson 5: Troubleshooting TCP/IP Addressing . . . . . . . . . . . . . . . . . . . . . . 2-42

2-1