Patent ID: 6226297
Filing Date: 2001-05-01
Classification: H04L

Abstract:
A method for providing redundancy to an Asynchronous Transfer Mode (ATM) emulated local-area network (LAN), wherein said ATM emulated LAN is served by a primary LAN Emulation Server, a Broadcast and Unknown Server (LES/BUS), and a LAN Emulation Configuration Server (LECS), said method comprising the steps of:coupling a backup LES/BUS to said ATM emulated LAN;establishing a logical redundancy virtual connection control (VCC) between said primary LES/BUS and said backup LES/BUS, wherein said primary LES/BUS and said backup LES/BUS are both coupled to said ATM emulated LAN;placing said backup LES/BUS in a dormant mode when said logical redundancy VCC is present between said primary LES/BUS and said backup LES/BUS; andin response to an absence of said logical redundancy VCC between said primary LES/BUS and said backup LES/BUS, activating said backup LES/BUS to service any request generated by said ATM emulated LAN.