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CCNA Certification All-In-One For Dummies by Silviu Angelescu

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Chapter 5: Internet Protocol Version 6 (IPv6)

Exam Objectives

Understanding IPv6

Identifying IPv4 and IPv6 differences

Examining IPv6 addressing

Reviewing IPv6 configuration

Routing with IPv6

Migrating IPv4 to IPv6

Implementing dual-stack IPv4/IPv6 protocols

Tunneling through both IP versions

Arriving at the final chapter on the TCP/IP family, you have surely amassed a wealth of knowledge on the subject by now. I have gone over 32-bit IPv4 addressing, classifying, and subnetting fundamentals and introduced you to the popular protocols and layering methods. Now I turn your attention to a new and improved Internet protocol version, namely IPv6. On the CCNA examination, you will find various test questions regarding the technical requirements and addressing scheme of IPv6. I provide all the knowledge required to answer any IPv6 questions on the test.

Internet Protocol Version 6 (IPv6)

IPv4’s 32-bit addressing scheme currently specifies roughly 4 billion hosts on 16 million networks. Considering Network Address Translation (NAT) and private addressing, this sounds like an overwhelmingly large enough number to provide ample address space for the entire networked world. You should not forget that many of these addresses are reserved and not available for host assignment. Also, the A, B, and C address classes have remarkably inflated the internetwork’s routing tables and proven to be a very wasteful method of IP assignment. A new and improved version of the Internet protocol and addressing ...

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