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:
Jun. 14, 2011
Filed:
Jan. 26, 2010
Clarence Filsfils, Brussels, BE;
David D. Ward, Los Gatos, CA (US);
Stefano B. Previdi, Rome, IT;
Jean-philippe Vasseur, Saint Martin d'Uriage, FR;
Jim Guichard, New Boston, NH (US);
Robert Raszuk, San Jose, CA (US);
Clarence Filsfils, Brussels, BE;
David D. Ward, Los Gatos, CA (US);
Stefano B. Previdi, Rome, IT;
Jean-Philippe Vasseur, Saint Martin d'Uriage, FR;
Jim Guichard, New Boston, NH (US);
Robert Raszuk, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In one embodiment, a loss of communication is detected between a first edge device of a computer network and a neighboring routing domain. A data packet is received at the first edge device, where the received data packet contains a destination address that is reachable via the neighboring routing domain. A determination is made whether a service label is located in a Multi-Protocol Label Switching (MPLS) label stack included in the received data packet. A service label in the MPLS label stack indicates that the received data packet was previously rerouted in accordance with fast reroute (FRR) operations. In response to a determination that the received data packet does not include a service label in the MPLS label stack, the received data packet is rerouted to a second edge device of the computer network for forwarding to the neighboring routing domain.