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Figure 18.1 |
The five classes of IP addresses in the original classful scheme. The address assigned to a host is either class A, B, or C; the prefix identifies a network, and the suffix is unique to a host on that network. |
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Figure 18.2 |
The mapping between the first four bits of an IP address and the class of the address. The mapping was used with the original classful scheme. |
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Figure 18.3 |
Examples of 32-bit binary numbers and their equivalent in dotted decimal notation. Each octet is written in decimal with periods (dots) used to separate octets. |
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Figure 18.4 |
The range of decimal values found in the first octet of each address class. |
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Figure 18.5 |
The number of networks and hosts per network in each of the three primary IP address classes. |
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Figure 18.6 |
An example private internet with IP addresses assigned to hosts. The size of the cloud used to denote a physical network corresponds to the number of hosts expected on the network; the size of a network determines the class of address assigned. |
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Figure 18.7 |
Illustration of CIDR addressing for a /28 prefix. Note that because bits are numbered starting at zero, the prefix covers bits 0 through 27. Thus, bits 28 through 31 correspond to the host suffix. |
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Figure 18.8 |
Summary of the special IP address forms. |
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Figure 18.9 |
An example of IP addresses assigned to two routers. Each interface is assigned an address that contains the prefix of the network to which the interface connects. |
