Control system and data message transmission method in Ethernet

Abstract

A control system, a data message transmission method and a network device include: the control system obtains the link information in the Ethernet based on the layer 2 control protocol of the Ethernet, and establishes and maintains the network topology of the Ethernet based on the link information; the control system calculates the route connecting the endpoint network bridges for the connection establishment request received by itself based on the network topology, and configures the transmission path information of the data system of each network bridge passed by the connection; the data system of each network bridge transmits the data message based on the transmission path information. The implementation of the invention enables the data stream transferred in the Ethernet to be manageable and the data traffic in the Ethernet to be controllable. The implementation of the present invention needn't alter the encapsulation structure of the Ethernet data plane, and doesn't part from the Ethernet technology, but utilizes the traditional layer 2 control protocol of the Ethernet, thereby to make the Ethernet support the traffic engineering on the premise that the Ethernet is reconstructed at a low cost.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a control system and a data message transmission method in the Ethernet. Background technique [0002] The Ethernet system consists of three subsystems, that is, the data forwarding system, the control system, and the management system. The data forwarding system is referred to as the data system. These three subsystems may also be called: data plane, control plane, and management plane. [0003] The data plane directly forwards and processes user data packets; the control plane does not directly process user data packets, but through control protocols such as STP / MRP / LLDP (Spanning Tree Protocol / Multiple Registration Protocol / Link Layer Discovery Protocol), etc. Obtain the network topology, provide configuration of relevant parameters and status for user data flow connection establishment, and provide reliability guarantee for it; the management plane is responsib...

AI Technical Summary

Problems solved by technology

[0010] 1. Since the traditional Ethernet system adopts connectionless technology, it cannot provide process engineering services, that is, it cannot provide reliable services that meet user requirements through optimized use of network resources according to user business needs and network resource conditions

[0011] 2. In order to prevent loopback, traditional Ethernet uses spanning tree to forward user data packets, and spanning tree is a pruned topology of a bridged network topology, so that some links in the bridged network are blocked, and network topology resources cannot be effectively used

[0012] 3. Since the existing Ethernet adopts the spanning tree protocol and generates the shared topology of the bridge network through distributed operations, there is still an election process for the determination of the root of the tree, so that the convergence time of the spanning tree is long. In this way, when the network Low business recovery efficiency in the event of a failure

This technology does not consider the bandwidth resource requirements of the end-to-end service data flow, but only considers the establishment of data forwarding tables based on the destination address. It cannot realize Ethernet traffic engineering based on network resource usage and service requirements.

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