Patent ID: 7274654
Filing Date: 2007-09-25
Classification: H04J,H04L

Abstract:
1. A method for sharing a backup path in a MultiProtocol Label Switching (MPLS) network, the method comprising the steps of: acquiring link configuration information of links included in a working path when the working path is set between a source node and a destination node; and allocating bands for a backup path using the link configuration information when the backup path is set between the source node and the destination node, wherein the step of allocating the bands for the backup path comprises: a step in which the source node computes the backup path corresponding to the set working path; a step in which the source node transmits a label allocation request message including information about the backup path of at least one other working path sharing a link with the set working path to an intermediate node included in the currently set backup path; and a step in which the intermediate node allocates a band for the currently set backup path using the received information about the backup path of the at least one other working path sharing a link with the set working path.