Processing method for redundancy checking of ring network

Abstract

The invention relates to a processing method for redundancy checking of a ring network, which comprises a first exchanger and a plurality of second exchangers. When the first exchanger is set as a redundancy manager, the second exchangers are used as ring network members; in addition, one connecting port is set into an interdiction state and other connecting ports are set into a conducting state by the first exchanger; the second exchangers can periodically detect whether the connecting states of a plurality of connecting ports are abnormal or not; and when the abnormality occurs, the second exchangers can transmit a fifth control packet to the first exchanger which can convert the connecting ports into the conducting state at the time and transmit a fourth control packet to the second exchangers, thus a network entity address table of the ring network can be updated. By using a mode of transmitting the control packets through a plurality of ring network members, the invention can reduce the situations that the control packets are lost caused by the full load of network flow and excessive single equipment, thereby improving the reliability of the ring network during redundancy checking.

Description

technical field [0001] The invention relates to a processing method for redundancy check of a ring network, especially to increase the reliability of the ring network during redundancy check by sending control packets through multiple ring network members, and to make the ring network fast resume normal operation. Background technique [0002] With the rapid development of information technology and the vigorous development of Internet technology, the communication between people is more convenient. Through the technology of the network, the two parties can achieve the effect of communication without being restricted by the region. In this way, the progress of network technology It not only adds more convenience to the public, but also has a more economical and efficient production method for enterprises. At present, the network can be divided into two parts: Wide Area Network (WAN) and Local Area Network (Local Area Network). In which, the regional network is a network sys...

AI Technical Summary

Problems solved by technology

[0005] However, the original spanning tree protocol and rapid spanning tree protocol cannot meet the requirements of faster network disconnection recovery capabilities in industrial environments due to the fact that every second counts for industrial control restoration. A connection is used as a backup line. This backup line will only allow specific control packets to pass through, and general data packets will be blocked and cannot pass through, so that the network will not form infinite loops, causing data storms, and users In order to set one of them as the redundant manager, and periodically send control packets to the ring network through it, when the redundant manager receives this packet again, it means that the current line is normal, if not, it will start the backup However, this inspection method is vulnerable to the full load of network traffic and too many network devices, resulting in the loss of test packets and misjudgment. This inspection method will cause the redundant manager to drive the backup line to start abnormally. , at this point, the ring network will form a loop (Looping) to generate a broadcast storm, which means that after the packet is received by the target device, it will still be transmitted endlessly, making the ring network busy and unable to continue sending One packet, as mentioned above, means that the reliability of this test method is low. If this kind of redundancy mechanism is applied to the ring network of the enterprise for production and manufacturing, there is a risk of failure to transmit and the machine cannot continue to work. The profits and long-term interests of enterprises will be greatly affected

[0006] On the other hand, in the architecture of ring network, the transmission of control packets usually requires the processor on each switch to receive the control packets sent by the previous switch and then forward them to the next switch. However, through The processor transfer process on the switch will cause a certain time delay. When there are more switches on the ring network, the accumulated delay time will affect the speed of recovery when the network is disconnected.

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