Patent ID: 7133402
Filing Date: 2006-11-07
Classification: H04L

Abstract:
1. A link identifier assignment system in a connection-oriented communication network, comprising: a determination module for obtaining, if a connection having a possibility of changing a route is established, the same link identifier value assigned to all links contained in this connection in a network where a data block is transferred on the connection established by a plurality of nodes and by a plurality of links between said nodes, and the link for forwarding the data block is identified by a link identifier attached to the data block in each of said nodes; and a notifying module for notifying all of said nodes contained in the connection, of the determined link identifier value, wherein each of said nodes stores the notified link identifier value to forward the data block attached with this link identifier value via the link assigned with this link identifier value, and, when having a neighboring node in a receiving direction on the connection and even if said neighboring node in the receiving direction is changed to other node due to making the change of the route, receives the data block attached with the link identifier value of which said other neighboring node notifies.