NODE, MONITORING AND ADMINISTRATION METHOD USED THEREUPON, AND TRANSFER SYSTEM, INPUT CIRCUIT, AND OUTPUT CIRCUIT USING SAME

摘要

[Issues] To provide a node (transfer device) which can process an OAM frame within an output line card. [Solution method] A node according to the present invention is used in an MPLS (Multi Protocol Label Switching) network, and the node includes an input unit which receives an OAM (Operation Administration and Maintenance) frame including TTL (Time To Live) from outside of the node and an output unit which transmits an OAM frame to outside of the node, wherein the input unit sets the TTL to a specific value and transmits the received OAM frame to the output unit in case a termination destination which an OAM frame received from outside indicates is the node and the received OAM frame is to be transmitted to the output unit and the output unit terminates an OAM frame transmitted from the input unit.