Addressing

IPv6 addresses are four times the size of IPv4 addresses. The representation of IPv6 addresses is also very different. This section covers the new representations, syntaxes, and compressed forms of IPv6 addresses.

Representation of IPv6 Addresses

As defined in RFC 2373, IP Version 6 Addressing Architecture, three formats represent IPv6 addresses. The preferred format is the longest method. It represents all 32 hexadecimal characters that form an IPv6 address. The preferred format may also be seen as the representation that matches a computer's “thinking.”

The next method is the compressed representation of an IPv6 address. To simplify the typing of IPv6 addresses by humans, it is possible to compress the address when zero values are ...

Get Cisco Self-Study: Implementing IPv6 Networks (IPV6) now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.