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
CN101557347AActive Publication Date: 2009-10-14HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2009-10-14

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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.
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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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