Method and device for synchronizing information distribution of clock in Ethernet

Abstract

The invention discloses a method and a device for synchronizing information distribution of a clock in the Ethernet. According to the method, by means of a neighborhood management module of each network element and according to a network element identification, a neighborhood table of each network element is established, a clock source information management module sends a clock identification and clock quality information which are produced by a clock source to the neighborhood network elements in the neighborhood table, clock source information data banks of the network elements are established, and a clock source effective path calculating module calculates synchronous paths of the network elements according to information in the clock source information data banks so that the synchronous paths of the clock source to the network elements are obtained; and when the network topology changes or the clock source can not be used, a path switching module and a clock switching module perform recalculation to obtain new synchronous paths of the network elements. According to the method and the device for synchronizing information distribution of the clock in the Ethernet, clock ring formation can be effectively prevented, and synchronization accuracy of a synchronizing network is guaranteed.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for distributing clock information in synchronous Ethernet. Background technique [0002] With the continuous development of PTN (Packet Transport Network, packet transport network) technology, the advantages of packet transport network have been affirmed by telecommunication service providers. At the same time, new requirements have been put forward for packet transport network. Packet clock synchronization is the focus of attention in recent years. One of the techniques. Packet clock synchronization requirements are the objective requirements of 3G / LTE and other services for networking. Clock synchronization includes two types: time synchronization and frequency synchronization. Commonly used synchronization accuracy requirements are shown in the following table: [0003] [0004] [0005] In order to meet the high-precision frequency sy...

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the defects of the prior art, aiming at the formation of a clock loop in the transmission process of synchronous Ethernet synchronization information, to provide a method and device that can efficiently complete the distribution of clock synchronization information in synchronous Ethernet, so as to Completely solve the problem of clock loop in synchronous Ethernet, and improve the synchronization accuracy of synchronous Ethernet

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