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    AUTOMATIC ISOLATION IN LOOPS
    5.
    发明公开
    AUTOMATIC ISOLATION IN LOOPS 审中-公开
    自动绝缘产品环网

    公开(公告)号：EP1075743A4

    公开(公告)日：2005-07-06

    申请号：EP99920075

    申请日：1999-04-27

    申请人： EMULEX CORP

    发明人： BREWER DAVID ,  HENSON KARL M ,  HASHEMI HOSSEIN ,  BALDWIN DAVID

    IPC分类号： H04B10/02 ,  H04B10/08 ,  H04B17/00 ,  H04J14/00 ,  H04L12/437

    CPC分类号： H04L12/437 ,  H04B10/038

    摘要： A loop network hub port (300) with an automatic bypass feature. The automatic bypass feature causes the hub port (300) to enter a bypass mode upon detection of a specified loop initialization sequence (316) from a node port (310) attached to the hub port (300). The hub port (300) does not propagate loop failure initialization data generated by the attached node port (310) upon failure of a data channel from the hub port (300) to the node port (310). The hub port (300) replaces loop initialization data with buffer data (324) and conceals the node port (310) failure from the remainder of the loop. Upon detection of the loop failure initialization sequence received from the node port (310), the hub port (300) enters a bypass mode, connecting input (302) to the output (328) of the loop until a recovery sequence is received.

    LOOP NETWORK HUB USING LOOP INITIALIZATION INSERTION
    6.
    发明公开
    LOOP NETWORK HUB USING LOOP INITIALIZATION INSERTION 审中-公开
    带环插入初始化环网节点

    公开(公告)号：EP1078482A4

    公开(公告)日：2005-05-04

    申请号：EP99922729

    申请日：1999-04-26

    申请人： EMULEX CORP

    发明人： BREWER DAVID ,  HENSON KARL M ,  HASHEMI HOSSEIN ,  SCHERER GREG ,  BALDWIN DAVID

    IPC分类号： H04Q7/22 ,  H04L12/433 ,  H04L12/437 ,  H04Q7/28 ,  H04J3/06

    CPC分类号： H04L12/437 ,  H04L12/433

    摘要： A loop network hub including a hub port (400) with a loop initialization insertion mechanism. The loop initialization insertion mechanism causes a hub port (400) which detects a new node port connection to automatically begin generating loop initialization data. A hub port (400) continues to generate loop initialization data until that hub port (400) receives a loop initialization sequence. The loop initialization data propagates around the loop of the hub, halting ordinary processing. In this way, the entire loop is cleared. Upon receiving a loop initialization sequence, the hub port originating the loop initialization data inserts the new node port into the loop. At this point, loop initialization begins and each node port (408) in the loop network obtains a unique loop network address.

    PROGRAMMABLE ERROR CONTROL CIRCUIT
    7.
    发明公开
    PROGRAMMABLE ERROR CONTROL CIRCUIT 审中-公开
    可编程的错误KONTROLSCHALTUNG

    公开(公告)号：EP1078483A4

    公开(公告)日：2005-04-27

    申请号：EP99920073

    申请日：1999-04-27

    申请人： EMULEX CORP

    发明人： BREWER DAVID ,  HASHEMI HOSSEIN ,  HENSON KARL M

    IPC分类号： H04J3/14 ,  H04L1/00 ,  H04L12/433 ,  H04L12/437 ,  H04L12/44

    CPC分类号： H04L12/433 ,  H04L1/0001 ,  H04L1/24 ,  H04L12/437 ,  H04L2012/445

    摘要： In a loop network system, a method and apparatus for automatic bypass of a node port (210) associated with a hub port (200) when the node port (210) generates a number of errors beyond a threshold level. In one aspect, a programmable error control circuit (218) provides this automatic bypass. The tolerance level is set through programmable parameters including a number of errors as well as a time interval to evaluate the number of errors detected. After a node port (210) has been bypassed by the error control circuit (218), the error control circuit (218) continues to monitor the error generation of the node port (210). When that error generation has reached an acceptable tolerance level, the error control circuit (218) automatically reinserts the node port (210) into the loop. The error control circuit (218) provides statistical reporting on the number of errors as well as the number of bypasses generated at a particular hub port (200).

    AUTOMATIC LOOP SEGMENT FAILURE ISOLATION
    8.
    发明公开
    AUTOMATIC LOOP SEGMENT FAILURE ISOLATION 审中-公开
    一环部分的错误的自动隔离

    公开(公告)号：EP1075742A4

    公开(公告)日：2005-04-13

    申请号：EP99921567

    申请日：1999-04-29

    申请人： EMULEX CORP

    发明人： BALDWIN DAVID ,  BREWER DAVID

    IPC分类号： H04J3/14 ,  H04L12/437

    CPC分类号： H04L12/437

    摘要： A hub port (300) in a hub of a loop network which automatically bypasses a node port (314) which is generating a particular loop failure initialization sequence. The hub port contains a detection circuit which enables the hub port to detect loop failure initialization data received from its attached node port. Upon detecting such data from an attached node port, the hub port (300) replaces such data with buffer data to be passed to the next hub port. Upon detecting the completion of a loop failure initialization sequence from an attached node port, the hub port enters a bypass node. The hub port no longer passes on output from its attached node port and instead forwards along the internal hub link data received from the previous hub port in the hub loop. The bypass is maintained until the hub port receives a primitive sequence indicating the recovery of the attached node port. The hub port periodically sends at least one recovery sequence to the node port. When the hub port receives the same recovery sequence back from the node port, the hub port ends the bypass and reinserts the node port back into the hub loop.