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NE20E-S2 V800R010C10SPC500 Configuration Guide - System Management 01

This is NE20E-S2 V800R010C10SPC500 Configuration Guide - System Management
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of G.8275.1

Overview of G.8275.1

Concepts of G.8275.1

ITU-T G.8275.1 defines the precision time protocol telecom profile for phase/time synchronization with full timing support from the network. G.8275.1 is defined as a time synchronization protocol.

A physical network can be logically divided into multiple clock domains. Each clock domain has its own independent synchronous time, with which clocks in the same domain synchronize.

A node on a time synchronization network is called a clock. G.8275.1 defines three types of clocks:
  • A Telecom grandmaster (T-GM) can only be the master clock that provides time synchronization.

  • A Telecom-boundary clock (T-BC) has more than one G.8275.1 interface. One interface of the T-BC synchronizes time signals with an upstream clock, and the other interfaces distribute the time signals to downstream clocks.

  • A Telecom time slave clock (T-TSC) can only be the slave clock that synchronizes the time information of the upstream device.

NOTE:

The NE20E can function as the T-BC only.

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Updated: 2019-01-02

Document ID: EDOC1100055400

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