Area border router and node protection method based on border gateway protocol
A border gateway protocol, router technology, applied in the field of communication, can solve problems such as occupying resources
Active Publication Date: 2013-01-16
HUAWEI TECH CO LTD
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[0005] Aspects of the present invention provide a border gateway protocol-based node protection method and an area border router to solve the problem in the prior art that area border routers need to maintain a local label mapping table and a backup label mapping table, occupying resources, and realize resource allocation. saving
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[0072] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0073] figure 1 It is a schematic diagram of the network structure of Embodiment 1 of the node protection method based on the border gateway protocol of the present invention; figure 1 As shown, the BGP-based node protection method provided in this embodiment can be specifically applied to an MPLS-based network system. In this network system, the...
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An embodiment of the invention provides an area border router and a node protection method based on the border gateway protocol. The method includes: enabling a first area border router to receive a first start message sent by a second area border router; determining the first area border router as a standby router according to a first negotiation forward label, a first negotiation label space and a first negotiation priority level; and respectively receiving a first label route sent by a third area border router and a second label route sent by the second area border router, storing the second label route, and establishing a first mapping relation between a second label in the second label route and a first label in the first label route. The area border router and the node protection method based on the border gateway protocol in the embodiment solve the problem of resource occupancy due to the fact that the area border routers need to maintain a local label mapping table and a backup label mapping table in the prior art, and resources are saved.
Description
technical field [0001] The embodiment of the present invention relates to communication technology, in particular to a border gateway protocol-based node protection method and an area border router. Background technique [0002] In an operator's bearer network, high-reliability guarantees are usually required. For node failures in the network, node protection is required to achieve sub-50 millisecond level protection switching. In the Multi-protocol Label Switching (MPLS) architecture, the label border gateway protocol's protection against node failures depends on the convergence of the control plane, and it is difficult to meet the sub-50 millisecond level operator requirements. [0003] The prior art adopts a label border gateway protocol node protection method based on a local repair point. The method includes that an area border router learns label routing information from a previous area border router, changes the next hop to an anycast next address, and Assign a new l...
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IPC IPC(8): H04L12/723H04L12/703H04L45/50H04L45/28
Inventor 刘晓东董宇
Owner HUAWEI TECH CO LTD