WO2017166969A1

WO2017166969A1 - Method and apparatus for sending 1588 message, and storage medium

Info

Publication number: WO2017166969A1
Application number: PCT/CN2017/074980
Authority: WO
Inventors: 宛苏成; 孙长胜
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-03-28
Filing date: 2017-02-27
Publication date: 2017-10-05
Also published as: CN107241154A

Abstract

Provided are a method and apparatus for sending a 1588 message. The method comprises: before active/standby states of a first clock board and a second clock board are switched, discarding a 1588 message generated by the second clock board, wherein the second clock board is a standby clock board before switching; and after the active/standby states of the first clock board and the second clock board are switched, sending the 1588 message generated by the second clock board. By means of the present disclosure, the problem in the related art that the active/standby switching time is too long is solved, and network oscillation caused by active/standby switching is alleviated.

Description

1588 message sending method, device and storage medium

Technical field

The present disclosure relates to the field of data network communications, and in particular, to a 1588 message sending method, apparatus, and storage medium.

Background technique

With the development of communication network technology, its demand for clock synchronization is getting higher and higher, and high-quality clock synchronization has become the key problem that needs to be solved first. The IEEE 1588 Time Synchronization Protocol (PTP) is a high-precision clock synchronization technology that can be combined with packet networks to synchronize clock signals of different precisions in heterogeneous systems to a unified master clock with the highest performance. Clock accuracy is up to sub-microsecond level.

The PTP measures the time offset and path delay of the upstream and downstream by means of packet exchange. The downstream device synchronizes the local time with the upstream device according to the measurement result. This is a process of continuously converge to approach the upstream device time. When the active/standby switchover occurs on the upstream device, the standby device needs to undergo a short-term initialization process. The PTP network protocol is interrupted for a short period of time. After the PTP packet processor of the downstream device detects the packet interruption and times out, it will recalculate and select the optimal 1588. The clock source is synchronized. When the downstream device selects and synchronizes the poor quality clock source, the clock quality of the downstream network is degraded. After the active/standby switchover of the PTP service of the current device is complete, the downstream device resynchronizes to the clock source of the current device. This process of re-selecting and synchronizing will affect the clock accuracy and clock quality of downstream devices and pass them to downstream devices step by step, causing the entire network to oscillate and it takes a while to regain stability.

When the active/standby switchover is performed in the PTP service, the downstream network may be affected, such as network flapping. The longer the switching time, the greater the shock to the downstream network. How to minimize the active/standby switching time of PTP services has become an important issue to be solved urgently.

Summary of the invention

The purpose of the disclosure is to provide a method, an apparatus, and a storage medium for transmitting 1588 packets, which solves the problem that the active/standby switching time is too long in the related art.

According to an aspect of the present disclosure, a method for transmitting a 1588 packet is provided, including: discarding a 1588 packet generated by the second clock board before the switching between the active state and the standby state of the first clock board and the second clock board, where The second clock board is a clock backup board before the switching; after the switching between the active state and the standby state of the first clock board and the second clock board, the 1588 message generated by the second clock board is sent.

Optionally, discarding the 1588 packet generated by the second clock board includes: closing the 1588 packet of the second clock board to the external sending port, and discarding the 1588 packet.

Optionally, sending the 1588 packet generated by the second clock board includes: opening a 1588 packet of the second clock board to the external sending port, and sending the 1588 packet.

Optionally, after discarding the 1588 packet, the method further includes: switching the second clock board to a clock In the case of the main board, the 1588 packet of the second clock board is opened to the external sending port, and the 1588 packet is sent.

The discarding the 1588 packet generated by the second clock board includes: determining that the 1588 packet is sent by the second clock board; and discarding the 1588 packet generated by the second clock board.

Optionally, before discarding the 1588 packet generated by the second clock board, the method further includes: configuring, for the second clock board, the 1588 clock configuration supported by the first clock board.

According to another aspect of the present disclosure, a 1588 packet sending apparatus is provided, including: a discarding module, configured to discard the second clock board generated before the switching between the active state and the standby state of the first clock board and the second clock board In the 1588 packet, the second clock board is a clock backup board before the switching, and the sending module is configured to send the second clock board after the switching between the active state and the standby state of the first clock board and the second clock board. Generated 1588 message.

Optionally, the discarding module includes: a shutting down unit, configured to close the 1588 packet of the second clock board to send the port; and the discarding unit is configured to discard the 1588 packet.

Optionally, the sending module includes: an open unit, configured to open the 1588 packet outgoing port of the second clock board; and the sending unit is configured to send the 1588 packet.

Optionally, the device further includes: a configuration module, configured to configure a 1588 clock configuration supported by the first clock board for the second clock board.

According to still another aspect of an embodiment of the present disclosure, a non-transitory computer readable storage medium is provided, wherein computer program instructions are stored, when one or more processors of a 1588 message transmitting device execute the computer program instructions, The 1588 packet sending device performs a 1588 packet sending method, and the method includes: discarding 1588 packets generated by the second clock board before the switching between the active state and the standby state of the first clock board and the second clock board The second clock board is a clock backup board before the switching; after the first clock board and the second clock board are switched, the 1588 message generated by the second clock board is sent.

The present invention solves the problem that the active/standby switching time is too long in the related art, and the network caused by the active/standby switchover is alleviated. Shock.

DRAWINGS

The drawings described herein are provided to provide a further understanding of the present disclosure, which is a part of the present disclosure, and the description of the present disclosure and the description thereof are not intended to limit the disclosure. In the drawing:

FIG. 1 is a flowchart 1 of a method for transmitting a 1588 message according to an embodiment of the present disclosure;

2 is a block diagram showing the structure of an embodiment of the present disclosure;

3 is a structural block diagram 1 of a 1588 message transmitting apparatus according to a preferred embodiment of the present disclosure;

4 is a structural block diagram 2 of a 1588 message transmitting apparatus according to a preferred embodiment of the present disclosure;

5 is a structural block diagram 3 of a 1588 message transmitting apparatus according to a preferred embodiment of the present disclosure;

6 is a second flowchart of a 1588 message sending method according to an embodiment of the present disclosure;

FIG. 7 is a first schematic diagram of a 1588 message transmitting apparatus according to an embodiment of the present disclosure; FIG.

FIG. 8 is a second schematic diagram of a 1588 message transmitting apparatus according to an embodiment of the present disclosure.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In this embodiment, a method and a device for sending a 1588 packet are provided. FIG. 1 is a flowchart 1 of a method for sending a packet according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:

Step S102, discarding 1588 packets generated by the second clock board before the switching between the active state and the standby state of the first clock board and the second clock board, where the second clock board is a clock backup board before the switching;

Step S104: After the primary clock state of the first clock board and the second clock board are switched, the 1588 message generated by the second clock board is sent.

The 1588 packet generated by discarding the second clock board is as follows:

In the first embodiment, as shown in FIG. 7, the first clock board and the second clock board respectively send the message to different message sending modules, and the message sending module corresponding to the clock board in the active/standby state is turned off. The port is configured to disable the sending of the packet sending module corresponding to the clock board in the active/standby state. The 1588 packet sent by the standby board is discarded. After the clock board becomes the main board after the active/standby switchover, the packet is sent. After the module learns that the clock board is switched to the clock board, the packet sending port corresponding to the clock board is opened to grant the sending permission, and the 1588 message sent to the packet sending module is sent out. In other words, it is determined whether the second clock board is a clock main board, and if the determination result is yes, the 1588 message of the second clock board is opened to the external transmission port, and the 1588 message is sent; if the judgment result is negative, The 1588 packet of the second clock board is sent to the external sending port, and the 1588 packet is discarded.

In the second embodiment, as shown in FIG. 8, the first clock board and the second clock board send a 1588 message to the same message sending module, and the message sending module determines the sender of the received 1588 message. It is a clock backup board, and the 1588 packet is discarded. The 1588 packet is sent by the clock main board, and the 1588 packet is sent out. The message sending module receives the next 1588 message and repeats the above determining action. The clock backup board is the second clock board before the active/standby switchover. After the active/standby switchover, the clock backup board is the first clock board.

Further, before the second clock board generates the 1588 message, the second clock board acquires the same 1588 clock configuration as the clock board, so that the second clock board can send and receive 1588 messages according to the 1588 protocol.

Through the above steps, the clock synchronization board works in synchronization with the clock main board, but the packet of the clock backup board is sent, so that the clock board and the peer device are synchronized normally, and the clock backup board and the peer device are pseudo-synchronized to ensure the device. During the active/standby switchover, the original clock backup board is synchronized with the peer device immediately after being switched to the clock board. This eliminates the configuration of the clock release and the resynchronization of the clock board and the peer device. The switching time of the PTP service during the standby switchover reduces the impact of the active/standby switchover on the clock synchronization network.

FIG. 2 is a structural block diagram of a 1588 message sending apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes:

The discarding module 22 is configured to discard the 1588 packet generated by the second clock board before the switching between the active state and the standby state of the first clock board and the second clock board, where the second clock board is the clock backup board before the switching ;

The sending module 24 is configured to send the 1588 message generated by the second clock board after the switching between the active state and the standby state of the first clock board and the second clock board.

FIG. 3 is a structural block diagram 1 of a 1588 packet sending apparatus according to a preferred embodiment of the present invention. As shown in FIG. 3, the discarding module 22 includes:

The closing unit 32 is configured to close the 1588 packet of the second clock board to the external sending port;

The discarding unit 34 is configured to discard the 1588 packet.

FIG. 4 is a structural block diagram 2 of a 1588 message sending apparatus according to a preferred embodiment of the present invention. As shown in FIG. 4, the sending module 24 further includes:

The open unit 42 is configured to open the 1588 packet of the second clock board to the external sending port;

The sending unit 44 is configured to send the 1588 message.

FIG. 5 is a structural block diagram 3 of a 1588 message sending apparatus according to a preferred embodiment of the present invention. As shown in FIG. 5, the apparatus further includes:

The configuration module 52 is configured to configure, for the second clock board, the 1588 protocol type supported by the first clock board.

The invention will now be further described in conjunction with specific embodiments.

The invention discloses a device and a method for shortening the switching time of the active/standby switching PTP service, and relates to the field of network communication. The method includes: after the 1588 message enters the device, it is sent to the clock main board (ie, the first clock described above). At the same time, the board is copied to the clock backup board (the second clock board described above); the clock board and the peer device perform normal 1588 message exchange to implement the 1588 clock synchronization function of the clock node; The slave board sends and receives 1588 packets. The 1588 packets are discarded in the 1588 packet sending module. The clock backup board and the peer device implement the pseudo 1588 clock synchronization function. When the master/slave switchover occurs, the original clock backup board is transferred to the master, and the 1588 packet sending port is opened to perform normal 1588 packet exchange. The original clock board is transferred to the switch, the 1588 packet sending port is closed, and the 1588 protocol processor sends the 1588 report. Text.

FIG. 6 is a second flowchart of a 1588 packet sending method according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps:

Step S602: The configuration of the 1588 protocol is sent to the clock board and the clock backup board at the same time, so that the clock master board 1588 protocol processor has the capability of receiving and processing 1588 packets.

In the step S604, the clock board and the clock backup board both transmit and receive protocol packets.

In the step S606, the 1588 packet sent by the clock main board is sent to the peer device by the packet sending and receiving module, and the 1588 packet sent by the clock backup board is discarded by the packet sending module.

Specifically, the packet sending module performs corresponding processing on the packet sent by the clock board according to the active/standby state delivered by the sending module in the active/standby state. If the status is the primary, the packet sending module sends the 1588 packet to the clock board. The packet is sent to the 1588 packet sending and receiving module, and is sent to the peer device by the 1588 packet sending module. If the status is the standby, the packet sending module discards the 1588 packet sent by the clock board and does not send the packet to the 1588 packet sending and receiving module. .

The packets sent by the clock board are sent to the peer through the 1588 packet sending module to complete the normal 1588 clock synchronization function. The packets sent by the clock backup board are discarded in the 1588 packet sending module. The clock backup board maintains the normal interaction of 1588 packets and completes the pseudo 1588 clock synchronization function.

When the active/standby switchover occurs, the original clock backup board is changed to the clock main board, and the 1588 packet sending function switch is enabled to perform the normal 1588 packet exchange. The original clock becomes the clock backup board, and the 1588 packet sending function switch is disabled. 1588 packet sent by the protocol processor. The right to interact with the PTP packet of the peer device is smoothly switched from the original clock to the current clock. When the master/slave switchover occurs, the original clock is converted to the clock backup board. The 1588 packet sending module detects that the clock board is the backup port and then sends the 1588 packet to the port. The board is converted to a clock board. The 1588 packet sending module detects that the clock board is the primary port and then sends the 1588 packet sending port to start sending 1588 packets. Therefore, when the master/slave switchover is performed, the 1588 packet sending right of the clock node is smoothly switched from the original clock board to the current clock board.

FIG. 7 is a first schematic diagram of a 1588 message sending apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes:

The configuration sending module 71 is configured to specify the 1588 protocol type that the 1588 protocol processor runs, and configure the 1588 protocol type to be synchronized to the clock master and backup boards. The parameters of the 1588 protocol processor are set according to the configuration commands of the user, so that the protocol processor can send and receive 1588 packets according to the requirements of the user, and implement the 1588 clock synchronization function. The specific setting parameters include Layer 2 and Layer 3 selection of 1588 packets, single multicast mode selection, rate selection of each packet, and whether two-step method selection is enabled.

The active/standby state delivered by the module 72 in the active/standby state is given to the first clock board 73 and the second clock board 74.

The first clock board 73 and the second clock board 74 are configured to implement the processing of the 1588 protocol packet, and send and receive the 1588 protocol packet, and perform 1588 clock synchronization with the peer device. The 1588 protocol configuration parameter is configured based on the 1588 protocol, and the 1588 protocol type specified by the upper-layer device is used to complete the 1588 clock synchronization function between the clock node and the peer device.

The first packet sending module 75 is configured to receive the 1588 packet outputted by the first clock board 73, and determine whether to send the 1588 packet according to the active/standby state of the clock board; when the clock board is the clock board, the 1588 packet sending port is opened. The packet is sent to the 1588 packet sending and receiving module 77, and is sent to the peer device by the 1588 packet sending and receiving module 77. When the clock is used as the clock backup board, the 1588 packet sending port is closed, and the received 1588 packet is discarded.

The second packet sending module 76 is configured to receive the 1588 packet outputted by the second clock board 74, and determine whether to send the 1588 packet according to the active/standby state of the clock board; when the clock motherboard is the clock, the 1588 packet sending port is opened. The packet is sent to the 1588 packet sending and receiving module 77, and is sent to the peer device by the 1588 packet sending and receiving module 77. When the clock is used as the clock backup board, the 1588 packet sending port is closed, and the received 1588 packet is discarded.

FIG. 8 is a second schematic diagram of a 1588 message sending apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes:

The configuration issuance module 81 is configured to specify the 1588 protocol type that the 1588 protocol processor runs, and configure the 1588 protocol type to be synchronized to the clock master and backup boards. The parameters of the 1588 protocol processor are set according to the configuration commands of the user, so that the protocol processor can send and receive 1588 packets according to the requirements of the user, and implement the 1588 clock synchronization function. The specific setting parameters include Layer 2 and Layer 3 selection of 1588 packets, single multicast mode selection, rate selection of each packet, and whether two-step method selection is enabled.

The active/standby state sent by the sending module 82 in the active/standby state is given to the first clock board 83 and the second clock board 84.

The first clock board 83 and the second clock board 84 are configured to implement the processing of the 1588 protocol packet, and send and receive the 1588 protocol packet, and perform 1588 clock synchronization with the peer device. The 1588 protocol configuration parameter is configured based on the 1588 protocol, and the 1588 protocol type specified by the upper-layer device is used to complete the 1588 clock synchronization function between the clock node and the peer device.

The message sending module 85 is configured to receive the 1588 message outputted by the first clock board 83 and the second clock board 84, and determine whether to send the 1588 message according to the active/standby state of the packet sending entity; when the sending body is the clock motherboard The packet is sent to the 1588 packet sending and receiving module 86, and is sent to the peer device by the 1588 packet sending and receiving module 86. When the packet sending body is the clock backup board, the 1588 packet sending port is closed, and the received 1588 packet is discarded. Text.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

Embodiments of the present disclosure provide a non-transitory computer readable storage medium having stored therein computer program instructions that, when one or more processors of a 1588 message transmitting device execute the computer program instructions, the 1588 message The sending device performs a 1588 packet sending method, where the method includes: discarding 1588 packets generated by the second clock board before the switching between the active state and the standby state of the first clock board and the second clock board, where the first The second clock board is a clock backup board before the switching; after the first clock board and the second clock board are switched, the 1588 message generated by the second clock board is sent.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Industrial applicability

The present disclosure is applicable to the field of data network communication, and solves the problem that the active/standby switching time is too long in the related art, and alleviates the network oscillation caused by the active/standby switchover.

Claims

A 1588 packet sending method includes:

Before the switching between the active state and the standby state of the first clock board and the second clock board, discarding the 1588 packet generated by the second clock board, where the second clock board is a clock backup board before the switching;

After the switching between the active state and the standby state of the first clock board and the second clock board, the 1588 message generated by the second clock board is sent.
The method of claim 1, wherein discarding the 1588 message generated by the second clock board comprises:

The 1588 packet of the second clock board is sent to the external sending port, and the 1588 packet is discarded.
The method of claim 2, wherein transmitting the 1588 message generated by the second clock board comprises:

The 1588 packet of the second clock board is opened to the external sending port, and the 1588 packet is sent.
The method of claim 3, wherein after the dropping of the 1588 message, the method further comprises:

In the case that the second clock board is switched to the clock main board, the 1588 message of the second clock board is opened to the external sending port, and the 1588 message is sent.
The method of claim 1, wherein discarding the 1588 message generated by the second clock board comprises:

Determining that the 1588 packet is sent by the second clock board;

The 1588 packet generated by the second clock board is discarded.
The method of claim 1, wherein before the discarding the 1588 message generated by the second clock board, the method further comprises:

The 1588 clock configuration supported by the first clock board is configured for the second clock board.
A 1588 message sending device includes:

The discarding module is configured to discard the 1588 packet generated by the second clock board before the switching between the active state and the standby state of the first clock board and the second clock board, where the second clock board is the clock preparation before the switching board;

The sending module is configured to send the 1588 message generated by the second clock board after the switching between the active state and the standby state of the first clock board and the second clock board.
The device of claim 7, wherein the discarding module comprises:

The unit is configured to shut down the 1588 packet of the second clock board to the external sending port;

The discarding unit is configured to discard the 1588 packet.
The apparatus of claim 8 wherein said transmitting module comprises:

An open unit, configured to open the 1588 packet of the second clock board to the external sending port;

The sending unit is configured to send the 1588 message.
The apparatus of claim 7 wherein said apparatus further comprises:

And a configuration module, configured to configure a 1588 clock configuration supported by the first clock board for the second clock board.
A non-transitory computer readable storage medium storing computer program instructions for performing a 1588 message transmitting device when the one or more processors of the 1588 message transmitting device execute the computer program instructions a message sending method, the method comprising:

The 1588 packet generated by the second clock board is discarded before the switching between the active state and the standby state of the first clock board and the second clock board, where the second clock board is a clock backup board before the switching;

After the primary clock state of the first clock board and the second clock board are switched, the 1588 message generated by the second clock board is sent.