The invention discloses a method for establishing a label switching path, a node device and a system, belonging to the field of communication technology. The method comprises: receiving the source node to the sink node sends connection request message, bandwidth request information of the connection request message carrying different conditions corresponding, wherein each bandwidth request information corresponding to a condition; according to the different conditions of the corresponding bandwidth reservation request information, the corresponding bandwidth resources remaining the bandwidth corresponding to different conditions in their own on the link, so as to establish a connection between the source node and the destination node. The embodiment of the invention in the initiation of connection requests with different conditions and different conditions corresponding to the bandwidth request message, the label switching nodes on the path, to the reserved bandwidth information according to their own characteristics, to maximize the use of the premise of link reliability makes bandwidth guarantee.
【技术实现步骤摘要】
【技术保护点】
１．一种建立标签交换路径的方法，其特征在于，所述方法包括：接收源节点向宿节点发送的连接建立请求消息，所述连接建立请求消息携带不同条件对应的带宽请求信息，其中所述每个带宽请求信息对应一个条件；根据所述不同条件对应的带宽请求信息，在自身链路上对应不同条件的子剩余带宽中预留相应的带宽资源，从而在所述源节点与所述宿节点之间建立连接。
【技术特征摘要】
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