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:
Apr. 06, 2010
Filed:
Nov. 28, 2005
James Guichard, Groton, MA (US);
Jean-philippe Vasseur, Dunstable, MA (US);
Clarence Filsfils, Brussels, BE;
Peter DE Vriendt, Denderleeuw, BE;
James Guichard, Groton, MA (US);
Jean-Philippe Vasseur, Dunstable, MA (US);
Clarence Filsfils, Brussels, BE;
Peter De Vriendt, Denderleeuw, BE;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A novel fast reroute (FRR) technique is provided for quickly and efficiently rerouting selected types of network traffic in response to a node or link failure at the edge of a computer network. According to the technique, the network includes first and second edge devices that function as 'FRR mates,' such that network traffic originally destined for one FRR mate may be quickly rerouted to the other without having to wait for conventional network convergence. When an edge device receives rerouted packets originally destined for its FRR mate, the device responds by forwarding only those rerouted packets matching the selected traffic types; rerouted packets that do not match the selected traffic types are dropped or otherwise discarded. The first and second edge devices may be statically configured as FRR mates, e.g., by a network administrator, or they may be configured to automatically detect their compatibility as FRR mates.