| 摘要 |
PURPOSE: A controller for duplexing ethernet channel duplexing in duplex ethernet switch is provided to construct a further rapid and reliable duplexed system by a physical connection and disconnection of the Ethernet channel. CONSTITUTION: A controller for duplexing ethernet channel duplexing in duplex ethernet switch includes a first Ethernet switch board(A) and a second Ethernet switch board(B). The first Ethernet switch board(A) includes M numbers of media access control(MAC) engines for generating the Ethernet switch control state signals, an Ethernet switch controller(10A), M numbers of transformers(40A,41A,42A) connected to the M numbers of Ethernet ports, M numbers of analog switches(30A,31A,32A) connected between the M numbers of transformers(40A,41A,42A) and the physical devices(20A,21A,22A) and a first duplexed controller(50A). And, the second Ethernet switch board(B) is composed of the same structure and function of the first Ethernet switch board(A). The first duplexed controller(50A) and the second duplexed controller(50B) of the second Ethernet switch board(B) detect their operational status by the Ethernet switch control state signal and the process state signals of the CPU. And, the first duplexed controller(50A) and the second duplexed controller(50B) control the switch operations of the analog switches in response to their status.
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