Method for transmitting precision clock synchronization protocol messages, apparatus and system thereof

Abstract

The invention discloses a method for transmitting precision clock synchronization protocol messages, an apparatus and a system thereof, belonging to the field of communication, wherein the method comprises the following steps: sending a detection request message carrying random numbers to a server apparatus via an event messages port; receiving detection response messages returned by the server apparatus via the event messages port; according to the random numbers, addresses and port numbers carried in the detection response messages, determining the addresses and the port numbers of the event messages port converted by the network address; and noticing the addresses and the port numbers of the event messages port converted by the network address to the server apparatus in unicast consultation process. In the method provided by the invention, the determined addresses and the port numbers of the event messages port converted by the network address is informed to the server apparatus via a client apparatus so that the server apparatus initiates the event messages according to the address and the port number, thereby transmitting the precision clock synchronization protocol messages in NAT (Network Address Translation) network.

Description

Method, device and system for transmitting precise clock synchronization protocol messages technical field The invention relates to the communication field, in particular to a method, device and system for transmitting precise clock synchronization protocol messages. Background technique In the communication network, the normal operation of many services requires network clock synchronization. IEEE1588 (Precision Clock Synchronization Protocol for Networked Measurement and Control Systems, a precision clock synchronization protocol for network measurement and control systems) as a time synchronization protocol standard can meet higher precision time synchronization requirements. In a communication network, it is often necessary to realize network clock synchronization by transmitting precise clock synchronization protocol messages. Among them, the precision clock synchronization protocol messages are divided into two types: general messages (GeneralMessages) and event mess...

AI Technical Summary

Problems solved by technology

As the number of computers continues to increase rapidly, IPv4 address resources cannot meet the needs of network users, so NAT (NetworkAddressTranslation, Network Address Translation) is widely used in various types of IPv4 networks. After the NAT network, its IP address and port number will be mapped to different public network IP and port numbers, so that when the server device sends an event message to the client device first, it cannot know the event message of the client device using the port after NAT Therefore, the transmission mode of the existing precise clock synchronization protocol message has certain limitations in the NAT network

Images