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:
Jan. 17, 2006
Filed:
May. 24, 2001
Claude Basso, Raleigh, NC (US);
Francis Arts, Turnhout, BE;
Pierre Leon Debuysscher, De Pinte, BE;
Olivier Didier Duroyon, McLean, VA (US);
Max Robert Povse, Apex, NC (US);
Natarajan Vaidhyanathan, Durham, NC (US);
Colin Beaton Verrilli, Apex, NC (US);
Claude Basso, Raleigh, NC (US);
Francis Arts, Turnhout, BE;
Pierre Leon Debuysscher, De Pinte, BE;
Olivier Didier Duroyon, McLean, VA (US);
Max Robert Povse, Apex, NC (US);
Natarajan Vaidhyanathan, Durham, NC (US);
Colin Beaton Verrilli, Apex, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Alcatel, Paris, FR;
Abstract
In a networking environment including one or more network processing (NP) devices and implementing a routing protocol for routing data packets from a source NP devices to destination NP devices via a switch fabric, with each network processing device supporting a number of interface ports, a system and method for enabling a routing system to recover more quickly that the routing protocol so as to significantly reduce the occurrence of lost data packets to a failed target interface/blade. The routing system is enabled to track the operational status of each network processor device and operational status of destination ports supported by each network processor device in the system, and maintains the operational status as a data structure at each network processing device. Prior to routing packets, an expedient logical determination is made as to the operational status of a target network processing device and target interface port of a current packet to be routed as represented in the data structure maintained at the source NP device. If the target blade/interface is not operations, an alternative route may be provided by ECMP. In this manner, correct routing of packets is ensured with reduced occurrence of lost data packets due to failed target NP devices/ports.