Methods and apparatus for using DHCP for home address management of nodes attached to an edge device and for performing mobility and address management as a proxy home agent
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United States of America Patent
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Nov 15, 2011
Grant Date -
Jun 29, 2006
app pub date -
Dec 29, 2004
filing date -
Dec 29, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatus for supporting the management of mobility and addresses by a Customer Premises Edge (CPE) router in a Mobile IP environment are disclosed. When a network prefix is allocated by a DHCP router to the CPE router, the CPE router divides the network prefix among its interfaces, and allocates home addresses to Mobile Nodes connected to its interfaces, as appropriate. The CPE router also assists in performing Duplicate Address Detection (DAD) to ensure that a home address that has been allocated has not already been assigned to another node. Upon completion of registration of a Mobile Node that is connected to one of the interfaces of the CPE router with its Home Agent, the CPE router assists in routing traffic to the Mobile Node. In addition, the CPE router assists in notifying nodes when one of the Mobile Nodes has moved, as well as when one of the Mobile Nodes has de-registered with the Home Agent.
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