Data transmission method, device and system for E1 bidirectional ring network

Abstract

Embodiments of the present invention disclose a method, an apparatus, and a system for transmitting data in an E1 bidirectional ring network. The E1 node includes: an Ethernet transmitting unit connected to a local Ethernet device through an Ethernet branch port, a CPU unit, and an E1 driving unit including a first-direction link port and a second-direction link port; when the CPU unit determines, on the basis of an interaction state of link state detection signaling with a neighboring E1 node, that a transmission link between the E1 node and the neighboring E1 node fails, link failure information is transmitted to a master node through a link port in the first-direction link port and the second-direction link port of the E1 node, where the link port is not a link port that is associated with the failed transmission link and is currently unavailable, so that the master node switches an operation mode of the first-direction link port of the master node from an operation mode where the first-direction link port sends data to an operation mode of both receiving and sending data, and switches an operation mode of the second-direction link port of the master node from an operation mode where the second-direction link port receives data to an operation mode of both receiving and sending data. The embodiments of the present invention can effectively improve the survivability of the E1 bidirectional ring network.

Description

technical field [0001] The present invention relates to the technical field of communication network, and more specifically, relates to a data transmission method, device and system of an E1 bidirectional ring network. Background technique [0002] The existing E1 transmission has star, chain and ring networking modes. The star network system is simple, but the utilization rate of transmission resources is low. Chain networking can realize the sharing of transmission resources, but the survivability is poor. Now there are two ring networking systems, one (application number: 200610020385.3 publication number: CN1812364) inherits the advantages of chain networking resource sharing. A switching device with a Spanning Tree Algorithm (STP) function, which enables the STP function to detect and control the loop state. [0003] Another ring networking system (application number: 200810217523.6 publication number: CN101404605A,) also inherits the advantages of chain networking r...

AI Technical Summary

Problems solved by technology

[0005] In the first type of E1 double-ring network, an external switching device must be configured to detect and control the loop status. In addition, using the STP function of the switching device to control the loop status has the defects of long response time and little information. Positioning is difficult, and the maintenance cost is high for later use;

[0006] In the second type of E1 double-ring network, an OAM network management station must be configured externally. If there is no OAM network management station, the network will not have self-diagnosis and loop protection capabilities.

[0007] It can be seen that the E1 bidirectional ring network in the prior art has poor survivability

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