GB/T 42404-2023Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Timing and synchronization for time-sensitive applications in bridged local area networks (English PDF)

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"

drafting:

This document is modified to adopt ISO /IEC /IEEE8802-1AS:2014 "Telecommunications and Information Exchange Bureau between Information Technology Systems"

Local and metropolitan area networks Part 1 AS: Timing and synchronization for time-sensitive applications in bridged local area networks:

The technical differences between this document and ISO /IEC /IEEE8802-1AS:2014 and their reasons are as follows:

---Added PON technologies such as 10GEPON, XGPON and 10GPON: The original text of the international standard only introduces the EPON phase

related technologies, and my country has upgraded to 10GPON such as 10GEPON and XGPON in the field of PON related technologies, so the increase

Supplemented 10GEPON and XGPON technologies, and added normative references to YD/T 2375-2019 to adapt to my country

The actual use of the system (Chapter 5):

---Change IPSec technology to TLSec technology: IPSec technology is a three-layer tunnel encryption protocol and a security scheme adopted by IETF:

TLSec technology is a wired LAN media access control security based on the ternary peer-to-peer architecture, which is the national standard GB/T 15629:3

The security scheme adopted, therefore replaces IPSec technology with TLSec technology (Chapter 15):

---Changed some normative reference documents, and replaced ISO /IEC 8802-11 with GB 15629:11, which adopts the revised international standard,

Replace IEEE802:3 (Chapter 2) with GB/T 15629:3, which adopts the international standard:

The following editorial changes have been made to this document:

--- In 3:15 of this document, add the example of China's Beidou Satellite Navigation System (BDS) as a recognized standard time source;

--- In order to comply with the relevant provisions of GB/T 1:1-2000, 1:1 and 1:2 of the original text of the international standard were merged, and the relevant technical content

keep consistent;

--- In order to adapt to the technological development of our country, the management information base code in 15:5 in the original text of the international standard is deleted:

Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:

1 Scope

This document specifies protocols and procedures for meeting synchronization requirements for time-sensitive applications of bridged LANs and virtual bridged LANs, including

This includes performing time synchronization maintenance during normal operation of network components, additions, deletions, failures, and network reconfigurations:

This document is applicable to enable time-sensitive applications connected to bridged LAN sites to meet their respective jitter, drift and time synchronization requirements:

requirements, including time-sensitive applications involving delivery to multiple endpoints and multiple streams:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

this document:

GB/T 15629:3 Specific requirements for telecommunication and information exchange between information technology systems in local area network and metropolitan area network Part 3

Part: Access Method and Physical Layer Specification of Carrier Sense Multiple Access with Collision Detection (CSMA/CD) (GB/T 15629:3-2004,

ISO /IEC /IEEE8802-3:2000, MOD)

GB 15629:11 Specific requirements for telecommunication and information exchange between information technology systems for local area networks and metropolitan area networks Part 11

Sub: Wireless LAN Media Access Control and Physical Layer Specification (GB 15629:11-2003, ISO /IEC /IEEE8802-11:1999,

MOD)

GB/T 25931-2010 Accurate clock synchronization protocol for networked measurement and control systems (IEC 61588:2009, IDT)

YD/T 2375-2019 Technical Requirements for High Precision Time Synchronization

ISO /IEC /IEEE8802-1Q:2020 Telecommunications and information exchange between information technology systems Local area network and metropolitan area network No:

works)

IEEE802:1ag:2007 Local Area Network and Metropolitan Area Network Virtual Bridging LAN Corrigendum 5: Connectivity Fault Management (Localand

Fault Management)

IEEE802:3av:2009 Information Technology Part 3: Amendment 1: 10gb/s Passive Optical Network Physical Layer Specifications and Management Parameters

IEEEP802:11v Information technology inter-system telecommunication and information exchange specific requirements for local area network and metropolitan area network Part 11

Sub: Wireless LAN Media Access Control and Physical Layer Specification Amendment 8: IEEE802:11 Wireless Network Management: (Informationtech-