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Managing Multicast MAC Addresses for Standards Compliance

Learn about reserved MAC addresses for standards use allocated by IEEE Registration Authority. Explore TRILL mechanism and discuss multicast address allocation for IEEE 802.11s with Donald Eastlake.

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Managing Multicast MAC Addresses for Standards Compliance

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  1. Multicast MAC Addresses for Standards Use Donald E. Eastlake 3rd Donald.Eastlake@motorola.com +1-508-786-7554 IETF TRILL

  2. Mechanism • This is a long recognized problem • It is handled by the IEEE Registration Authority which was formed in 1986 (authorized by ISO/IEC) • 0X-80-C2-00-00-00 to 0X-80-C2-FF-FF-FFare reserved for standards use where X=1 for multicast and 0 for unicast • Allocated values are listed in a small, expensive ISO standard document IETF TRILL

  3. Questions • How many do we need? • Should we request a small block? • Example: IEEE 802.1D MAC Bridge Filtered MAC Group Addresses are allocated01-80-C2-00-00-00 to 01-80-C2-00-00-0FFrames with destination addresses in this range are not forwarded by 802.1D conformant bridges • A similar block could be requested for RBridges • Donald Eastlake plans to meet informally next week with Tony Jeffree, chair of 802.1, to discuss allocation of multicast addresses for 802.11s and will bring up TRILL requirements IETF TRILL

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