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:
Aug. 21, 2012
Filed:
Mar. 21, 2007
Wenyang Lei, Guangdong, CN;
Wenyang Lei, Guangdong, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
The embodiments of the present invention provide a method and a system for implementing protection switching in Multi-protocol Label Switching (MPLS) network, the method includes: transmitting by a first Egress Label Switched Router (LSR) first probe packets to an Ingress LSR via a first Label Switching Path (LSP); switching by the Ingress LSR working traffic to a third LSP terminated at a second Egress LSR when the Ingress LSR does not receive the first probe packets. According to the embodiments of the present invention, the Ingress LSR may learn the failure of the Egress LSR according to the result of receiving the probe packets when a failure of the Egress LSR occurs, and switches the working traffic correspondingly. Moreover, the working LSP and protection LSP are not terminated at a same Egress LSR, but correspond to different Egress LSRs which greatly improves the security of the MPLS network.