Conventions for Writing IPv6 Prefixes

ImageLesson 2: Shortening an IPv6 Address

IPv6 prefixes represent a range or block of consecutive IPv6 addresses. Just like routers use IPv4 subnets in IPv4 routing tables to represent ranges of consecutive addresses, routers use IPv6 prefixes to represent ranges of consecutive IPv6 addresses. The concepts mirror those of IPv4 addressing when using a classless view of the IPv4 address. Figure 3-2 reviews both the classful and classless views of IPv4 addresses, compared to the IPv6 view of addressing and prefixes.

Figure 3-2 IPv4 Classless and Classful Addressing, IPv6 Addressing

First, for perspective, compare ...

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