The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2009
Filed:
Nov. 21, 2006
Steven J. Moscirella, Phoenixville, PA (US);
David M. Bjordammen, Blue Bell, PA (US);
Arthur P. Jost, Mount Laurel, NJ (US);
Robert E. Mack, Collegeville, PA (US);
Steven J. Moscirella, Phoenixville, PA (US);
David M. Bjordammen, Blue Bell, PA (US);
Arthur P. Jost, Mount Laurel, NJ (US);
Robert E. Mack, Collegeville, PA (US);
General Instruments, Corporation, Horsham, PA (US);
Abstract
Method and apparatus for facilitating device redundancy in a fault tolerant system is described. One aspect of the invention relates to common redundancy for a set of devices in a redundancy group. Each of the devices is in either an active role or a standby role. Virtual configurations for the devices are stored in a management system. Advertisements are periodically sent from each of the devices in the active role to each of the devices in the redundancy group. Each of the advertisements includes a configuration sequence number. An update in one of the virtual configurations is announced by incrementing the configuration sequence number in at least one of the advertisements. An updated virtual configuration is obtained at each of the devices in the standby role from the management system in response to detecting the configuration sequence number as incremented in the at least one advertisement.