Virtual MAC address system and method
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United States of America Patent
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Jun 1, 2010
Grant Date -
Feb 19, 2009
app pub date -
Aug 15, 2008
filing date -
Apr 22, 2002
priority date (Note) -
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Abstract
A method for creating a virtual MAC address, the method includes receiving an Internet Protocol address that is to be associated with a virtual MAC address. The method creates a virtual MAC address by setting an OUI portion of the virtual MAC address to an OUI value and setting the non-OUI portion of the virtual MAC address to a subset of the Internet Protocol (IP) address. In one embodiment, the lower three bytes of the IP address are used. Additionally, a method of migrating a virtual MAC address includes detecting a migration event on a first system; creating a virtual MAC address on a second system; and issuing a gratuitous ARP packet containing the virtual MAC address.
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