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Creation method, device and system for label forward path during fast reroute switch

A label forwarding path and path technology, applied in the field of communications, can solve the problems of no message being sent out, the source node and sink node failing to establish a label forwarding path in time, etc., to achieve the effect of accurately forwarding messages

Active Publication Date: 2009-10-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sending method in the prior art is to send a preset number of refresh messages each time, but the inventor found that the above sending method also has problems. During the maintenance time of the path refresh state, the local repair node may not send all the messages. , causing the source node and the sink node to fail to establish a label forwarding path in time

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  • Creation method, device and system for label forward path during fast reroute switch
  • Creation method, device and system for label forward path during fast reroute switch
  • Creation method, device and system for label forward path during fast reroute switch

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0040] The present invention will be further explained below in conjunction with specific embodiments and accompanying drawings.

[0041] Such as figure 2 As shown, the embodiment of the present invention provides a method for establishing a label forwarding path in fast rerouting switching, which is suitable for local repair nodes, including:

[0042] S201. Send a first message to the source node and the sink node on the label forwarding path respectively, the f...

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Abstract

The embodiment of the invention discloses a creation method, a device and a system for label forward path during fast reroute switch, which pertain to the filed of communication and can ensure that source nodes and sink nodes refresh path information in time. The creation method comprises the following steps: a first message is respectively sent to the source nodes and the sink nodes on the label forward path, and the first message carries the information on holding the path refreshing state so that the source nodes and the sink nodes confirm the saving time of the path refreshing state according to the information on holding the path refreshing state in the first message; during the holding time of the path refreshing state, a second message is respectively sent to the source nodes and the sink nodes and the second message carries the information on refreshing the path state so that the source nodes and the sink nodes can create the label forward path according to the information on refreshing the path state carried by the second message.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for establishing a label forwarding path in fast rerouting switching. Background technique [0002] In a Multi-Protocol Label Switching (MPLS) network, when a source node sends a message to a destination node, according to the type of the message, the source node classifies the received message into a forwarding equivalence class, and The received message is sent to the destination node through the Traffic Engineering Tunnel (Traffic Engineering Tunnel, TE Tunnel) corresponding to the forwarding equivalence class, wherein the path through which the message is transmitted through the TE Tunnel is called Label Switching Path (Label Switching Path, LSP) . For example, if figure 1 As shown, the source node RT1 transmits the message to the destination node RT5 through RT1-RT2-RT4-RT5. In order to ensure the quality of service of the MPLS network, the fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L45/247H04L45/24H04L45/28H04L45/50H04L47/724
CPCH04L45/28H04L47/724H04L45/22H04L45/50H04L45/00
Inventor 杨星柯峰
Owner HUAWEI TECH CO LTD
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