发明名称 A method and apparatus for recovery from faults in a loop network by bypassing ports if a regularly sent command signal is not received within a time period
摘要 A method and apparatus for recovery from faults in a loop network (500) is provided. The loop network (500) has a plurality of ports (520, 530, 532, 534) serially connected with means for bypassing the ports (520, 530, 532, 534) from the loop network (500). A control device (522, 524) is provided with bypass control over at least one of the ports (530, 532, 534). A host means (502) sends a command to the control device (522, 524) at regular intervals and the control device (522, 524) has a counter which restarts a time period at the receipt of each command. If the time period expires, the control device (522, 524) activates the means for bypassing all the ports (530, 532, 534) under its control. The loop network (500) may have two loops (516, 518) with at least some of the ports (520, 530, 532, 534) common to both loops (516, 518).
申请公布号 GB2377140(A) 申请公布日期 2002.12.31
申请号 GB20010015969 申请日期 2001.06.29
申请人 * INTERNATIONAL BUSINESS MACHINES CORPORATION 发明人 REGINALD * BEER;PAUL NICHOLAS * CASHMAN;PAUL * HOOTON;IAN DAVID * JUDD;ROBERT FRANK * MADDOCK;ROBERT BRUCE * NICHOLSON;BARRY DOUGLAS * WHYTE;PAUL * HOOTON;BARRY DOUGLAS * WHYTE;IAN DAVID * JUDD;PAUL NICHOLAS * CASHMAN;ROBERT BRUCE * NICHOLSON;ROBERT FRANK * MADDOCK;REGINALD * BEER
分类号 H04L12/437;H04L12/56;(IPC1-7):H04L12/437 主分类号 H04L12/437
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