公开(公告)号：US08116212B2

公开(公告)日：2012-02-14

申请号：US12397032

申请日：2009-03-03

Applicant: Katsuya Kitajima

Inventor： Katsuya Kitajima

IPC: H04L1/00

CPC classification number: H04L1/0082 ,  H04L1/22 ,  H04L2001/0097

Abstract: A line status monitoring circuit receives a frame through one of a number of lines from another node connected through a redundant transmission channel which is made redundant by the lines. The line status monitoring circuit includes a line-specific check frame monitoring unit. If a line-specific check frame having an added dedicated header corresponding to each of the plurality of lines is received through one of the lines from another node, the line-specific check frame monitoring unit determines whether or not a further line-specific check frame corresponding to a frame for checking which is identical to a frame for checking to which the line-specific check frame corresponds is received through at least a predetermined number of lines within a predetermined time. If the further line-specific check frame is not received in this manner, the line-specific check frame monitoring unit discards the frame.

Abstract translation: 线路状态监视电路通过通过由线冗余的冗余传输信道连接的另一节点中的一条线路接收帧。 线路状态监视电路包括线路专用检查帧监视单元。 如果通过来自另一个节点的线路之一接收到具有与多条线路中的每条线路相对应的添加的专用头部的线路特定检查帧，则线路特定检查帧监视单元确定是否进一步的线路特定检查帧 对应于用于检查的帧，其与在预定时间内通过至少预定数量的行接收到的用于检查行特定检查帧对应的检查的帧相同。 如果没有以这种方式接收到另外的行特定检查帧，则行特定检查帧监视单元丢弃该帧。

公开(公告)号：US08873373B2

公开(公告)日：2014-10-28

申请号：US12406558

申请日：2009-03-18

Applicant: Katsuya Kitajima

Inventor： Katsuya Kitajima

IPC: H04J1/16 ,  H04L12/703 ,  H04J3/08

CPC classification number: H04L45/28 ,  H04J3/085 ,  H04L49/1507 ,  H04L49/351 ,  H04L49/552 ,  H04L49/557

Abstract: The present invention, provides an Ethernet transmission apparatus comprising a first and second MEPs provided for each of transmission lines of operational and non-operational systems and for performing the transmission/reception of a frame to be transmitted over each transmission line in a duplexed manner, and a switching processing part for switching the MEP to be used for reception by using ETH-CC which is transmitted at regular intervals, in which the above described first and second MEPs are configured to be able to confirm each other's received content and are adapted to add a continuous sequence number to the ETH-CC when transmitting the ETH-CC, and when the sequence number of the received ETH-CC is smaller than the sequence number of the ETH-CC received by the operational system side, the MEP of the non-operational system side is adapted not to transmit the frame.

Abstract translation: 本发明提供了一种以太网传输装置，包括为操作和非操作系统的每个传输线路提供的第一和第二MEP，并且以双工方式执行要在每个传输线路上传输的帧的发送/接收， 以及切换处理部分，用于通过使用以规则间隔发送的ETH-CC来切换要用于接收的MEP，其中上述第一和第二MEP被配置为能够确认彼此的接收内容，并且适于 在发送ETH-CC时向ETH-CC添加连续序列号，当接收的ETH-CC的序列号小于由操作系统侧接收到的ETH-CC的序列号时， 非操作系统侧适于不发送帧。