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MPLS and VPN Architectures, Volume II by Jeff Apcar, Ivan Pepelnjak, Jim Guichard

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Quick Introduction to IPv6

This section discusses the basics of IPv6 to allow those of you who are not familiar with IPv6 to follow the discussions in this chapter. If you are interested in an in-depth description of IPv6, you can find more information at http://www.cisco.com/go/ipv6.

IPv6 Addressing

IPv6 uses 128-bit addresses, displayed as a sequence of 16-bit fields, separated by colons. For example, 1234:5678:0000:0000:0000:005c:7113:dfae is a valid IPv6 address. To reduce the typing efforts, you can omit leading zeroes in each 16-bit field. Therefore, you could write the previous address in shorter form as 1234:5678:0:0:0:5c:7113:dfae. Furthermore, because long sequences of zeroes are expected to be quite common in IPv6 addresses, you can ...

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