Method and apparatus for transparently providing a failover netw

Details Method and apparatus for transparently providing a failover netw Method and apparatus for transparently providing a failover netw

1997-08-25

2000-08-22

Hsu, Alpus H.

Multiplex communications

Fault recovery

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

370222, 714 4, 34082501, G06F 1100, H04B 174, H04L 100

Patent

active

061083003

ABSTRACT:
A system and method are disclosed for transferring a network function from a primary network device to a backup network device. The backup network device first detects that the primary network device has failed. The backup network device then sends a message to the primary network device indicating to the primary network device that the primary network device has failed. The IP address of the backup network device changes from a standby IP address to an active IP address, and the IP address of the primary network device changes from the active IP address to the standby IP address. Packets sent to the active IP address are then handled with the backup network device.

REFERENCES:
patent: 4700348 (1987-10-01), Ise et al.
patent: 5016244 (1991-05-01), Massey, Jr. et al.
patent: 5515418 (1996-05-01), Yamaguchi et al.
patent: 5581542 (1996-12-01), Kato et al.
patent: 5661719 (1997-08-01), Townsend et al.

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