Time synchronization method in Ethernet ring network and Ethernet ring system

Abstract

The invention discloses a time synchronism method in an Ethernet ring network, comprising the following steps: transmitting a health detection message which is used for detecting the integrity of the ring network on the Ethernet ring network; transmitting a time synchronism message which carries over synchronizing time information the Ethernet ring network, and informing the synchronizing time information to various transmission nodes on the Ethernet ring network; after each transmission node receives the health detection message, not reporting to the self CPU for treatment, and reporting the received time synchronism message to the self CPU for treatment, recording the synchronism time information carried in the time synchronism message, and the synchronism time information being Hello Time. Moreover, the invention also discloses another time synchronism method in the Ethernet ring network, an Ethernet ring network system and a main node in the Ethernet ring network. By adoption the technical proposal of the invention, time synchronism in the ring network can be realized without the necessity for utilization of the health detection message, thereby reduction of the CPU efficiency of the transmission nodes and reduction of the detection efficiency of the integrity of the ring network are avoided.

Description

technical field [0001] The invention relates to the technical field of Ethernet ring network protection, in particular to a time synchronization method in the Ethernet ring network, an Ethernet ring network system and a master node in the Ethernet ring network. Background technique [0002] The Ethernet ring network protection protocol can prevent broadcast storms caused by data loops in the Ethernet ring network. When a link on the Ethernet ring is disconnected, the backup link can be quickly activated to restore the communication between the nodes on the ring network. . [0003] The following are some basic concepts and key technologies in the Ethernet ring protection protocol: [0004] Domain: The Ethernet ring network protection protocol runs on the Ethernet ring network, and all nodes on the Ethernet ring network belong to a domain. [0005] Master node: There is a master node in each domain, which is the main operation node that initiates loop detection and loop prev...

AI Technical Summary

Problems solved by technology

[0014] In the prior art, since the Hello Time information is propagated through the Hello message, each node needs to report the Hello message to its own CPU for processing after receiving the Hello message; The high frequency of sending Hello messages makes each node on the ring frequently receive Hello messages and report them to its own CPU for processing, thereby increasing the processing burden on the CPU of the transmission node and reducing the efficiency of the CPU.

In addition, the Hello message is reported to the CPU on each transmission node for processing, which also reduces the efficiency of the polling mechanism for detecting the integrity of the ring network

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