IPv6 represents an evolutionary step for IP. Despite building upon IPv4 and the experience gained operating IPv4 networks, IPv6 has its own idiosyncrasies and unique functionality implementations. For this reason, you should familiarize yourself with the fundamentals of the protocol prior to looking into deploying it. This chapter ushers you into the scope of this book by providing a brief refresher of key IPv6 concepts.
Many aspects of IPv6 set it apart from its predecessor. Some of these aspects are discussed in subsequent chapters from a deployment perspective. This chapter, however, focuses on a subset of IPv6 protocol characteristics that represent the foundation of its operation, as follows: