System and method for address notification in a network

Details System and method for address notification in a network System and method for address notification in a network

2007-03-30

2010-06-15

Ngo, Ricky (Department: 2464)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S221000, C370S242000

Reexamination Certificate

active

07738362

ABSTRACT:
A network system includes a service providing apparatus; first and second backup apparatuses, each of which is configured to back up at least a part of a function of the service providing apparatus, and is connected with the service providing apparatus through a WAN; and a terminal connected with the service providing apparatus and the first and second backup apparatuses, and configured to receive a service from the service providing apparatus in a normal operation. The service providing apparatus has IP addresses of itself, the first and second backup apparatuses and the terminal, and notifies the IP addresses of the service providing apparatus and the first backup apparatus to the terminal in response to registration of the IP address of the terminal. The terminal holds the IP addresses of the service providing apparatus and the first backup apparatus, and registers the IP address of the terminal on the first backup apparatus based on the IP address of the first backup apparatus to receive a service from the first backup apparatus, when knowing a communication failure with the service providing apparatus.

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patent: 2004-328604 (2004-11-01), None

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