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. 04, 2012
Filed:
Apr. 17, 2009
Hannes Gredler, Pillberg, AT;
John Galen Scudder, Ann Arbor, MI (US);
Nischal Sheth, Los Altos, CA (US);
Yakov Rekhter, New Rochelle, NY (US);
Hannes Gredler, Pillberg, AT;
John Galen Scudder, Ann Arbor, MI (US);
Nischal Sheth, Los Altos, CA (US);
Yakov Rekhter, New Rochelle, NY (US);
Juniper Networks, Inc., Sunnyvale, CA (US);
Abstract
This disclosure describes techniques for protecting an endpoint of a label switched path. In one embodiment, a system includes an ingress router, a primary egress router, backup router, and a point of local repair (PLR) router. The ingress router, the PLR router, and the first egress router form a first label switched path. The backup router provides protection for the primary egress router such that the backup router provides routing services for the first egress router when the first egress router is not available. The primary egress router and the backup router share an anycast IP address. The backup router advertises a route to reach the primary egress router, but upon receiving a packet intended for the primary egress router, the backup router identifies the destination of the packet and forwards the packet to the destination instead of the primary egress router along a different route.