Label switching router, label switching network and label switched path setting method

摘要

To provide a label switching network in which the network resources and the operation cost can be reduced, and the scalability problem to a large scale network can be solved. ;If an LSR detects a fault in the label switched path, the LSR retrieves an LSP fault indication retrieval table to solve an LSP fault of what contents to be notified to which protection point for a faulty label switched path. After solving it, the LSR notifies the LSP fault indication to the protection point. In the LSR-P of protection point, if an LSP fault indication packet from the LSR having detected the LSP fault is received, the label switched path to be switched is designated from the information contained in that message, and the switching of the corresponding label switched path is performed.