Chapter 8. Internet Protocol Version 4

This chapter covers the following subjects:

IPv4 Header

IPv4 Addressing

IP Address Subnets

Address Assignment and Name Resolution

This chapter reviews Internet Protocol Version 4 (IPv4) address structures and IPv4 address types. IPv4 is the version of the protocol that the Internet has used since the initial allocation of IPv4 addresses in 1981. The size of the enterprise indicated the address class that was allocated. This chapter covers the IPv4 header to give you an understanding of IPv4 characteristics. The mid-1990s saw the implementation of classless interdomain routing (CIDR), Network Address Translation (NAT), and private address space to prevent the apparent exhaustion of IPv4 address space. ...

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