Method and device for Ethernet redundancy control

A control method and Ethernet technology, applied in the network field, can solve problems such as network failure and system paralysis

Active Publication Date: 2015-07-08
EMERSON NETWORK POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a redundant control method and device for Ethernet, which is used to solve the problem in the prior art that a faulty node of industrial Ethernet causes subsequent network failure, and even causes the entire system to be paralyzed

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  • Method and device for Ethernet redundancy control
  • Method and device for Ethernet redundancy control

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Embodiment Construction

[0038] The current industrial Ethernet adopts a ring network topology, for example figure 2 Shown in the ring network topology, figure 2 The master station includes port E1 and port E2, port E1 is connected to slave station 1, slave station 1 is connected to slave station 2, and then connected to the last slave station N in turn, and then slave station N is connected back to the E2 port of the master station, so A ring network topology is formed between the master station and the slave station.

[0039] However, if a slave station in the ring network topology fails, the slave station behind the fault point will not be able to receive the service data packets sent by the master station, and the slave station will not be able to send feedback data packets to the master station , This will cause partial network failure, and even cause the entire system to be paralyzed.

[0040] Therefore, the embodiment of the present invention provides an Ethernet redundancy method to solve ...

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Abstract

The embodiment of the invention provides a method and a device for Ethernet redundancy control. The method comprises the following steps: a master station acquires all slave stations not sending a feedback data packet; the master station determines the slave station nearest to a port of the master station in transmission distance from all the slave stations not sending a feedback data packet as an offline slave station; and the master station sends a service data packet via the port nearest to the offline slave station in transmission distance to the slave stations between the offline slave station and the port, and sends a service data packet via the other port to the offline slave station and the slave stations between the offline slave station and the other port. Thus, when one slave station fails or is offline, the master station adjusts the sending sequence of data packets in time, so that a system can effectively avoid the offline slave station when issuing data packets, rapid recovery of the system is achieved, and the communication efficiency and stability of the system are enhanced.

Description

technical field [0001] The invention relates to the field of network technology, in particular to an Ethernet redundancy control method and device. Background technique [0002] Applying Ethernet to the on-site industrial environment has become an important development direction of industrial control. The current industrial Ethernet can be a ring topology composed of a master station and multiple slave stations (such as figure 1 shown). [0003] In the industrial field, the environmental factors are relatively complicated. Factors such as electromagnetic interference, temperature and humidity changes, and vibration can cause a node in the industrial Ethernet to fail. Since the faulty node is in the Ethernet link, it will cause subsequent network failure. Even cause the whole system to be paralyzed. Contents of the invention [0004] The present invention provides an Ethernet redundancy control method and device, which are used to solve the problem in the prior art that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04L12/24
Inventor 周朝阳姚詹图胡永辉林应荃
Owner EMERSON NETWORK POWER CO LTD
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