Technique for synchronizing redundant network elements

Details Technique for synchronizing redundant network elements Technique for synchronizing redundant network elements

2008-07-01

2008-07-01

Ngo, Ricky Q. (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

Reexamination Certificate

active

10657214

ABSTRACT:
A technique for synchronizing redundant network elements is disclosed. In one particular exemplary embodiment, the technique may be realized as a method that comprises: transmitting a checkpoint indication signal to a primary element and at least one backup element, wherein each of the primary element and the at least one backup element has one or more connections to a network; generating a first checkpoint that is indicative of a first status of the primary element associated with a first arrival time of the checkpoint indication signal at the primary element; generating a second checkpoint that is indicative of a second status of the at least one backup element associated with a second arrival time of the checkpoint indication signal at the at least one backup element; and comparing the first checkpoint and the second checkpoint to determine a synchronization between the primary element and the backup element.

REFERENCES:
patent: 6148410 (2000-11-01), Baskey et al.
patent: 6247141 (2001-06-01), Holmberg
patent: 6378129 (2002-04-01), Zetts
patent: 2003/0058893 (2003-03-01), Dworkin et al.

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