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A method and network element equipment for processing packets

A network element device and message technology, applied in the field of optical wavelength division communication, can solve the problem that the time synchronization of the whole network cannot be realized and accurate time can not be provided, the WDM network cannot realize the transmission and analysis of Ethernet messages, and the PTP protocol messages are stripped Out of the problem, to achieve the effect of precise time transmission

Active Publication Date: 2018-01-26
ZTE CORP
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Problems solved by technology

However, PTP protocol packets need to be encapsulated in the Ethernet frame format for interaction. Using this existing technology, PTP protocol packets cannot be stripped out on the line side, and WDM networks cannot implement Ethernet communication between network elements. The transmission and analysis of the message, so that it is impossible to transmit and analyze the protocol signaling of network precise time synchronization between network elements, and it is impossible to realize the time synchronization of the whole network and the function of providing precise time

Method used

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  • A method and network element equipment for processing packets
  • A method and network element equipment for processing packets
  • A method and network element equipment for processing packets

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Embodiment Construction

[0052] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0053] In order to realize the interaction of PTP protocol messages between network elements of the WDM network without occupying the service channel, the PTP message can be disassembled into several 1-byte fields or multi-byte fields, and filled into OTUk frames along with the frame The reserved bytes of the field are transmitted to the opposite end, and the opposite end device parses the field, extracts and recomposes the PTP protocol message, and hands it to the PTP protocol processing unit for processing.

[0054] A schematic diagram of a WDM network element in an embodim...

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Abstract

The present invention provides a method for processing messages and network element equipment. The method includes: assembling a Precision Time Protocol (PTP) message; inserting the PTP message into a reserved byte or mixed frame overhead of an Optical Transport Unit (OTU) sent after being included in the Ethernet packet. Through the present invention, the PTP protocol message interaction can be realized between the WDM network elements, so that the PTP protocol messages can be transmitted and analyzed between the network elements, thereby realizing the accurate time transmission of the WDM network.

Description

technical field [0001] The invention relates to the field of optical wavelength division communication, and relates to a message processing method and network element equipment for realizing time synchronization of all network elements of a wavelength division system and accurate time transmission. Background technique [0002] The traditional TDM (Time Division Multiplex, time division multiplexing) network (PDH (Plesiochronous Digital Hierarchy, quasi-synchronous digital series) / SDH (Synchronous Digital Hierarchy, synchronous digital series) can accurately transmit TDM services (such as E1 / T1) The clock information is transmitted, and the receiving end can recover the business according to the extracted clock information. At the same time, the TDM line can also provide a synchronous reference clock for some application networks. The more common application is the mobile Backhaul (mobile backhaul) network. With the WDM (Wavelength Division Multiplexing, wavelength division ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04J14/02H04Q11/00
CPCH04J3/1652H04J3/0667H04J3/065H04L69/28H04L67/5683
Inventor 杨明杰张建军吴胜兵
Owner ZTE CORP
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