IP Version 6 Addressing Architecture

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Unformatted text preview: cating Site Addresses", RFC 3879, September 2004. Hinden [Page 19] Standards Track RFC 4291 February 2006 IPv6 Addressing Architecture Appendix A: Creating Modified EUI-64 Format Interface Identifiers Depending on the characteristics of a specific link or node, there are a number of approaches for creating Modified EUI-64 format interface identifiers. This appendix describes some of these approaches. Links or Nodes with IEEE EUI-64 Identifiers The only change needed to transform an IEEE EUI-64 identifier to an interface identifier is to invert the "u" (universal/local) bit. An example is a globally unique IEEE EUI-64 identifier of the form: |0 6| 1|1 3|3 4|4 |0 3| 5|6 1|2 7|8 +----------------+----------------+---------------+----------------+ |cccccc0gcccccccc|ccccccccmmmmmmmm|mmmmmmmmmmmmmmmm| mmmmmmmmmmmmmmmm| +----------------+----------------+---------------+----------------+ where "c" is the bits of the assigned company_id, "0" is the value of the universal/local bit to indicate universal scope, "g" is individual/group bit, and "m" is the bits of the manufacturer- selected extension identifier. would The IPv6 interface identifier be of the form: |0 6| 1|1 3|3 4|4 |0 3| 5|6 1|2 7|8 +----------------+----------------+---------------+----------------+ |cccccc1gcccccccc|ccccccccmmmmmmmm|mmmmmmmmmmmmmmmm| mmmmmmmmmmmmmmmm| +----------------+----------------+---------------+-------...
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This document was uploaded on 12/31/2013.

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