METHOD AND SYSTEM FOR MOBILE IP HOME AGENT REDUNDANCY

Title:

METHOD AND SYSTEM FOR MOBILE IP HOME AGENT REDUNDANCY

Document Type and Number:

WIPO Patent Application WO2003085540

Kind Code:

A3

Abstract:

A method and system for Mobile Internet Protocol (EP) device redundancy. As mobile devices (78) roam (84) away from a home network (80) and change a connective status, mobility binding records are sent to a multicast network address on the home network. The multicast network address multicasts the mobility binding records to other active Mobile IP home agent control nodes, standby home agent control nodes and standby home agents on the home network. The method and system allows standby home agent control nodes or standby home agents to be transparently switched for active home agent control nodes or active home agents that fail without downloading or uploading large numbers of mobility binding records after a failure. The method and system may also help reduce failed calls (e.g., data sessions including Voice over IP (VoIP), H.323, etc.), network congestion and improve user satisfaction in Mobile IP systems.

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Inventors:

BORELLA MICHAEL S
SHARMA ABHISHEK
WARRIER CHANDRA
BHATIA RAVIDEEP
ALEX ARUN
SUDHIR KUNNATH

Application Number:

PCT/US2003/010107

Publication Date:

December 04, 2003

Filing Date:

March 25, 2003

Export Citation:

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Assignee:

3COM CORP (US)

International Classes:

H04L12/28; H04L12/56; H04L69/40; (IPC1-7): G06F15/16

Foreign References:

US6487605B1	2002-11-26
US20030095523A1	2003-05-22

Other References: