OAM PROCESSING METHOD IN ATM-BASED MPLS SYSTEM

摘要

PURPOSE: An OAM(Operating And Management) processing method in an ATM(Asynchronous Transfer Mode)-based MPLS(Multi Protocol Label Switch) system is provided to offer an OAM function requested between a router and a subscriber network and offer an OAM function with respect to an ATM service in the ATM-based MPLS system. CONSTITUTION: Channel information set up through an IPC(Inter Processor Communication) between an FE(Forwarding Engine)(31) and an MSC(MPLS Service Controller)(34) is stored in a table. A service type is judged from the formed channel table whenever an OAM cell is inputted to a specific channel. If the received OAM cell is an OAM cell inputted to an LSP(Label Switched Path) channel, the OAM cell is transmitted to the FE(31) through a PCI(Peripheral Component Interconnect). If the received OAM cell is an OAM cell inputted to an ATM channel, the OAM cell is transmitted to an input and output buffer switch(32) through a UTOPIA(Universal Test and Operations PHY Interface for ATM). The OAM process with respect to the LSP channel and the ATM channel is simultaneously performed in one system. Various OAM function are embodied between the FE(31) and a node of a subscriber network through the IPC from the MSC(34).