IP Version 6 Addressing Architecture

Would be of the interface identifier the form 0 6 11

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Unformatted text preview: --+ When IEEE 802 48-bit MAC addresses are available (on an interface or a node), an implementation may use them to create interface identifiers due to their availability and uniqueness properties. Links with Other Kinds of Identifiers There are a number of types of links that have link-layer interface identifiers other than IEEE EUI-64 or IEEE 802 48-bit MACs. Examples include LocalTalk and Arcnet. Modified EUI-64 The method to create a format identifier is to take the link identifier (e.g., the LocalTalk 8-bit node identifier) and zero fill it to the left. example, a For LocalTalk 8-bit node identifier of hexadecimal value 0x4F results in the following interface identifier: |0 6| 1|1 3|3 4|4 |0 3| 5|6 1|2 7|8 +----------------+----------------+---------------+----------------+ |0000000000000000|0000000000000000|0000000000000000| 0000000001001111| +----------------+----------------+---------------+----------------+ Note that this results in the universal/local bit set to "0" to indicate local scope. Links without Identifiers There are a number of links that do not have any type of built-in identifier. configured The most common of these are serial links and tunnels. subnet Interface identifiers that are unique within a prefix must be chosen. When no built-in identifier is available on a link, the preferred appr...
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This document was uploaded on 12/31/2013.

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