PTP clock and method for load bearing processing

Abstract

The invention aims to provide a PTP clock and method for carrying out load bearing processing. The PTP clock according to the present invention comprises: a state acquisition unit for acquiring the current state of each PTP port; a measuring unit used for measuring the capacity of the upstream master clock for responding to the PTP load of the downstream slave clock and the PTP load of the downstream slave clock so as to obtain corresponding measuring information; and a load bearing processing unit used for bearing the excessive PTP load of the downstream slave clock instead of the upstream master clock on the basis of the measurement information, wherein the behavior of the load bearing processing unit is invisible to the downstream slave clock bearing the PTP load by the load bearing processing unit. Compared with the prior art, the method has the advantages that the capacity of the upstream master clock responding to the PTP load of the downstream slave clock and the PTP load of thedownstream slave clock are measured, and based on the measurement information, the upstream master clock is replaced to bear excessive PTP load of the downstream slave clock, so that the burden of the upstream master clock can be reduced.

Description

Technical field[0001]The present invention relates to the field of communication technology, and in particular to a PTP clock and method for load bearing processing.Background technique[0002]The IEEE 1588-2008 standard defines four types: ordinary clock, boundary clock, end-to-end transparent clock, and peer-to-peer transparent clock. The basic type of PTP clock, the following clause briefly introduces the working principle of PTP (the following principle introduction is taken from IEEE 1588-2008):[0003]1. In order to establish a PTP (Precision Time Protocol, precision time protocol) master-slave hierarchy (master-slave hierarchy) in the domain, each PTP port of the ordinary clock or edge clock executes an independent copy of the PTP state machine (PTP state machine) . Each PTP port checks the content of all Announce messages received. Using the best master clock algorithm, the status of each PTP port of the clock is determined by analyzing the content of the Announce message and th...

AI Technical Summary

Problems solved by technology

[0006] 4. Ordinary clock has only one port in one domain

But this does not help the master clock already deployed in the field

Also, it is difficult to estimate the PTP load of the slave clock until the ability of the master clock to respond to the PTP load of the slave clock is determined

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