Method and system for LEC resiliency with fast failover

A system to emulate Local Area Network (LAN) over ATM Network comprising:

• a first primary Asynchronous Transfer Mode (ATM) interface circuit;
• a second secondary ATM interface circuit;
• and
• a controller executing a LAN emulation client (LEC) program that uses the first Primary ATM interface circuit to communicate over the ATM network and in response to a failure of the first primary ATM interface circuit said LEC program switches communication from the first primary ATM interface circuit to said second secondary ATM interface circuit.

A method comprising:

• providing a first primary Asynchronous Transfer Mode circuit;
• providing a second secondary Asynchronous Transfer Mode circuit;
• providing a LAN Emulation Client (LEC) program to be executed on a CPU;
• configuring the LEC program to associate with the first primary Asynchronous Transfer Mode circuit and the second secondary Asynchronous Transfer Mode circuit establishing, with said LEC program, communication over the first primary Asynchronous Transfer Mode circuit;
• monitoring said first primary Asynchronous Transfer Mode circuit to detect interface failure;
• and
• said LEC program switching communication from the first primary Asynchronous Transfer Mode circuit to the second secondary Asynchronous Transfer Mode circuit only if interface failure is detected.

A program product comprising:

• a medium in which computer program is recorded, said computer program including
• a first set of instructions to which a primary ATM interface and a secondary ATM interface is being defined as entities through which communication is to be made;
• a second set of instructions to establish communication over said primary interface;
• a third set of instructions to monitor the primary interface to detect interface failure;
• and
• a fourth set of instructions responsive to interface failure to switch communication from the primary ATM interface to the secondary ATM interface only if interface failure is detected.