WO2017016196A1

WO2017016196A1 - Data synchronization method, apparatus, and system

Info

Publication number: WO2017016196A1
Application number: PCT/CN2016/070431
Authority: WO
Inventors: 刘伟
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-07-27
Filing date: 2016-01-07
Publication date: 2017-02-02
Also published as: CN106657168A

Abstract

The present invention provides a data synchronization method, apparatus, and system. A primary master control unit receives application state data sent by a service processing unit, the primary master control unit modifies the application state data to non-synchronized state data, and the primary master control unit synchronizes the non-synchronized state data to the service processing unit; the primary master control unit modifies the non-synchronized state data to synchronizing state data, and the primary master control unit synchronizes the synchronizing state data to a standby master control unit; and the primary master control unit receives an acknowledgement message, the acknowledgement message comprising an acknowledgement content indicative of that the standby master control unit modifies the synchronizing state data to synchronized state data, the primary master control unit modifies the synchronizing state data to the synchronized state data, and the primary master control unit synchronizes the synchronized state data to the service processing unit. The problem of abnormal failure caused by data non-synchronization is resolved, the consistency of all unit data is achieved, and the maintenance cost is reduced.

Description

Synchronous data method, device and system

Technical field

The present invention relates to the field of communications, and in particular to a method, device and system for synchronizing data.

Background technique

In the Synchronous Digital Hierarchy (SDH) device, the Dense Wavelength Division Multiplexing (DWDM) device, the Packet Transport Network (PTN) device, and the network control protocol ( The Network Control Protocol (NCP) device and the Optical Transport Network (OTN) device have high real-time and reliability requirements for the services carried by the main control unit. Data center, the synchronization function of its configuration data is very important. The main control unit often has one or more standby main control units, that is, the synchronization of the configuration data includes two contents: data synchronization between the main control unit and the standby main control unit, and the synchronization is a copy and backup operation. The main control unit synchronizes with the data of the business processing unit, and this synchronization is an action of issuing and responding.

In the related art, the two data synchronizations are independently operated. Although the processing is simple, the effect is often poor. For example, when the main control unit sends data, if the main control unit fails, the data configuration of the main control is not synchronized successfully, and the standby main control unit does not have this data. The data is abnormal, causing the device to run abnormally, or even causing service interruption and failure to recover. These problems caused by data inconsistency are often very complicated and difficult to locate and eliminate, which will greatly increase the manpower and material resources of equipment maintenance and cause waste of resources.

In the related art, an abnormal solution caused by data out of synchronization has not yet proposed an effective solution.

Summary of the invention

The present invention provides a method, apparatus and system for synchronizing data to at least solve the problem of abnormal faults caused by data out of synchronization in the related art.

According to an embodiment of the present invention, a data synchronization method is provided, including:

The main control unit receives the application status data sent by the service processing unit, the main control unit modifies the application status data into unsynchronized status data, and the main control unit synchronizes the unsynchronized status data. Giving the business processing unit;

The main control unit modifies the unsynchronized state data to be synchronizing state data, and the main control unit synchronizes the synchronizing state data to the standby main control unit;

The primary control unit receives an acknowledgement message, the acknowledgement message includes a confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the The data in the synchronized state is the data in the synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing list yuan.

In an embodiment of the present invention, the active main control unit receives an active/standby switching event, and sends the active/standby switching event to the service processing unit.

In a case where the data states in the service processing unit are all in a synchronized state, the primary control unit receives a synchronization completion event sent by the service processing unit.

In the case that the service processing unit includes the unsynchronized state data or the application state data, the main control unit receives the synchronization state data, wherein the synchronization state data is the service processing unit. Modifying the unsynchronized state data or the application state data;

The main control unit modifies the synchronization status data to unsynchronized status data, and the main control unit sends the unsynchronized status data to the standby main control unit;

The primary control unit receives an acknowledgement message, the acknowledgement message includes a confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the The data of the unsynchronized state is data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.

According to another embodiment of the present invention, a data synchronization method is further provided, including:

The main control unit receives an online event of the standby main control unit, the main control unit modifies the unsynchronized status data to the synchronized state, and the main control unit sends the synchronizing status data to the standby Main control unit

The primary control unit receives an acknowledgement message, the acknowledgement message includes a confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the The data in the synchronized state is the data in the synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing unit.

In an embodiment of the present invention, after the primary control unit modifies the data in the synchronized state to the synchronized state, the method includes:

The active main control unit sends a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local non-synchronized state data.

According to another embodiment of the present invention, a data synchronization apparatus is further provided, including:

The first receiving module is configured to receive, by the main control unit, application status data sent by the service processing unit, where the main control unit modifies the application status data into unsynchronized status data, and the main control unit The unsynchronized state data is synchronized to the service processing unit;

a first modifying module, configured to: the primary control unit modifies the unsynchronized state data to be synchronized state data, and the primary MME synchronizes the synchronized state data to the standby MME;

a first confirmation module, configured to receive, by the primary control unit, an acknowledgement message, where the confirmation message includes a confirmation content that the standby control unit modifies the synchronized state data to the synchronized state data, the primary Synchronizing the synchronized state data to the service processing unit with a master unit.

In the embodiment of the present invention, the first switching module is configured to receive the active/standby switching event by the active main control unit, and send the active/standby switching event to the service processing unit.

The second receiving module is configured to receive, when the data states in the service processing unit are in a synchronized state, the primary control unit receives a synchronization completion event sent by the service processing unit.

In the embodiment of the present invention, the second switching module is configured to receive the active/standby switching event by the active main control unit, and send the active/standby switching event to the service processing unit.

a third receiving module, configured to: when the service processing unit includes the unsynchronized state data or the application state data, the main control unit receives the synchronization state data, where the synchronization state is Data is that the service processing unit modifies the unsynchronized state data or the application state data;

a second modification module, configured to: the main control unit modifies the synchronization status data into unsynchronized status data, and the main control unit sends the unsynchronized status data to the standby main control unit;

a second confirmation module, configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, the main The data of the unsynchronized state is modified by the main control unit to be the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.

a third modification module, configured to receive an online event of the standby main control unit, wherein the main control unit modifies the unsynchronized state data to the synchronization state, and the main control unit sends the ongoing Synchronizing status data to the standby master unit;

a third confirmation module, configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, the main The data of the synchronization state is modified by the main control unit to be synchronized data, and the main control unit synchronizes the data of the synchronized state to the service processing unit.

In an embodiment of the invention, the apparatus comprises:

And deleting the module, the primary control unit is configured to send a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local non-synchronized state data.

According to another embodiment of the present invention, a data synchronization system is further provided, including: an active main control unit, a standby main control unit, and a service processing unit;

The main control unit receives application status data sent by the service processing unit, and the main control unit The application status data is modified to the unsynchronized status data, and the main control unit synchronizes the unsynchronized status data to the service processing unit;

According to the present invention, the main control unit receives the application status data sent by the service processing unit, and the main control unit modifies the application status data into unsynchronized status data, and the main control unit unsynchronizes the status data. Synchronizing to the service processing unit; the main control unit modifies the unsynchronized status data to the synchronization status data, and the main control unit synchronizes the synchronization status data to the standby main control unit; the main control unit Receiving a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronization state data to the synchronization state data, and the main control unit modifies the data in the synchronization state to be the synchronized state data, where The main control unit synchronizes the synchronized state data to the service processing unit, solves the problem of abnormal failure caused by data non-synchronization, realizes consistency of data of each unit, and saves maintenance cost.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flow chart 1 of a data synchronization method according to an embodiment of the present invention;

2 is a second flowchart of a data synchronization method according to an embodiment of the present invention;

3 is a structural block diagram 1 of a data synchronization apparatus according to an embodiment of the present invention;

4 is a structural block diagram 2 of a data synchronization apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a normal data synchronization process according to a preferred embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of an active/standby switching process according to a preferred embodiment of the present invention; FIG.

FIG. 7 is a schematic diagram of an active/standby switchover process in a normal data synchronization process performed by an active/standby NCP according to a preferred embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram of a flow of data batch synchronization by inserting a standby NCP according to a preferred embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of an active/standby switchover process occurring during data synchronization between an active and standby device according to a preferred embodiment of the present invention.

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.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

A data synchronization method is provided in this embodiment. FIG. 1 is a flowchart 1 of a data synchronization method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, the main control unit receives the application status data sent by the service processing unit, and the main control unit modifies the application status data into unsynchronized status data, and the main control unit synchronizes the unsynchronized status data to The business processing unit;

Step S104, the main control unit modifies the unsynchronized state data into the synchronization state data, and the main control unit synchronizes the synchronization state data to the standby main control unit;

Step S106, the main control unit receives an acknowledgement message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data, and the main control unit modifies the synchronization state. The data is data in a synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing unit.

Through the above steps, the main control unit receives the application status data sent by the service processing unit, and the main control unit modifies the application status data into unsynchronized status data, and the main control unit synchronizes the unsynchronized status data. Sending to the service processing unit, the main control unit modifies the unsynchronized state data to the synchronization state data, and the main control unit synchronizes the synchronization state data to the standby main control unit, and the main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronization state data to the synchronization state data, and the main control unit modifies the data of the synchronization state to be synchronized data, the main The main control unit synchronizes the synchronized state data to the service processing unit, solves the problem of abnormal fault caused by data unsynchronization, realizes consistency of data of each unit, and saves maintenance cost.

In this embodiment, the active main control unit receives the active/standby switchover event, and sends the active/standby switchover event to the service processing unit. If the data states in the service processing unit are all synchronized, the The active master unit receives the synchronization completion event sent by the service processing unit.

In this embodiment, the main control unit receives the active/standby switching event, and sends the active/standby switching event to the service processing unit, where the service processing unit includes the unsynchronized status data or the application status data. The main control unit receives the synchronization status data, wherein the synchronization status data is that the service processing unit modifies the unsynchronized status data or the application status data, and the main control unit synchronizes the status. The data is modified to the unsynchronized state data, and the main control unit sends the unsynchronized status data to the standby main control unit, and the main control unit receives the confirmation message, and the confirmation message includes the standby main control unit to be synchronizing The status data modifies the confirmation content of the synchronized state data, the main control unit modifies the data of the unsynchronized state to be the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit. .

A data synchronization method is provided in this embodiment, and FIG. 2 is a data synchronization method according to an embodiment of the present invention. Flowchart 2, as shown in Figure 2, the process includes the following steps:

Step S202, the main control unit receives an online event of the standby main control unit, and the main control unit modifies the unsynchronized state data to the synchronization state, and the main control unit sends the synchronization status data to the standby main unit. Control unit

Step S204, the main control unit receives an acknowledgement message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, and the main control unit modifies the synchronization state. The data is data in a synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing unit.

Through the above steps, the main control unit receives the standby main control unit online event, the main control unit changes the unsynchronized status data to the synchronized state, and the main control unit sends the synchronous status data to the standby. a main control unit, after the main control unit receives the confirmation that the standby main control unit modifies the synchronization status data to the synchronized status data, the main control unit modifies the data in the synchronization status to be synchronized Data, the main control unit synchronizes the synchronized state data to the service processing unit, solves the problem of abnormal failure caused by data non-synchronization, realizes consistency of data of each unit, and saves maintenance cost.

In this embodiment, after the primary control unit modifies the data in the synchronized state to the synchronized state, the method includes: the primary control unit sends a synchronization completion event to the standby primary control unit, the standby The master unit deletes the local non-synchronized status data.

In the embodiment, a data synchronization device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a structural block diagram 1 of a data synchronization apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes:

The first receiving module 32 is configured to receive, by the main control unit, the application status data sent by the service processing unit, where the main control unit modifies the application status data to the unsynchronized status data, and the main control unit Synchronizing state data to the service processing unit;

The first modifying module 34 is configured to modify, by the main control unit, the unsynchronized state data to be synchronizing state data, and the main controlling unit synchronizes the synchronizing state data to the standby main control unit;

The first confirmation module 36 is configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, and the main control unit modifies The data in the synchronized state is data in a synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing unit.

In this embodiment, the device further includes: a first switching module, configured to: the primary control unit receives an active/standby switching event, and sends the active/standby switching event to the service processing unit;

The second receiving module is configured to receive, when the data state in the service processing unit is the synchronized state, the primary control unit receives the synchronization completion event sent by the service processing unit.

In this embodiment, the device further includes: a second switching module, configured to: the primary control unit receives an active/standby switching event, and sends the active/standby switching event to the service processing unit;

a third receiving module, configured to receive, in the case that the service processing unit includes the unsynchronized state data or the application status data, the primary control unit receives the synchronization status data, where the synchronization status data is the service processing The unit modifies the unsynchronized status data or the application status data;

a second modification module, configured to: the main control unit modifies the synchronization status data to the unsynchronized status data, and the main control unit sends the unsynchronized status data to the standby main control unit;

a second confirmation module, configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby control unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the The data of the unsynchronized state is the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.

4 is a structural block diagram 2 of a data synchronization apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes:

The third modification module 42 is configured to receive an online event of the standby main control unit, wherein the main control unit modifies the unsynchronized state data to the synchronization state, and the main control unit sends the synchronization status. Data to the standby master unit;

The third confirmation module 44 is configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, and the main control unit modifies The data in the synchronized state is data in a synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing unit.

In this embodiment, the device further includes:

The module is deleted, and the main control unit sends a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local non-synchronized state data.

In another embodiment of the present invention, a data synchronization system is further provided, including: an active main control unit, a standby main control unit, and a service processing unit;

The main control unit receives the application status data sent by the service processing unit, and the main control unit modifies the application status data into unsynchronized status data, and the main control unit synchronizes the unsynchronized status data to the Business processing unit;

The master control unit modifies the unsynchronized state data to the synchronization state data, and the master control unit synchronizes the synchronization state data to the standby master unit;

The master control unit receives an acknowledgement message, the acknowledgement message includes the confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the data in the synchronized state to be The data of the synchronization state, the main control unit synchronizes the data of the synchronized state to the service processing unit.

The invention will now be described in detail in conjunction with the preferred embodiments and embodiments.

The preferred embodiment provides a data synchronization mechanism for implementing an active main control unit, a standby main control unit, and a service processing list. Meta (could exist multiple) data consistency, wherein the main control unit, the standby main control unit, and the service processing unit and the main control unit, the standby main control unit, and the service processing unit in the above embodiments function and function The same, avoid a series of problems caused by data inconsistency.

The method in the preferred embodiment divides the main control unit into three states: "active state", "standby state", "active/standby state", and "data recovery state". The “active state” means that only the main control unit has no standby main control unit; the “standby state” indicates that there are both the main control unit and the standby main control unit, and the unit is the standby main control unit; "It means that there are both the main control unit and the standby main control unit. This unit is the main control unit. After the data recovery state passes the active/standby switchover, the main control unit and the service processing unit perform a transient state of data recovery. There is no case where there is only a standby master unit and no master master unit. Status negotiation can be performed between the master units in any way.

The preferred embodiment divides the data to be synchronized into "application status", "unsynchronized status", "synchronizing status", and "synchronized status", "application status", "unsynchronized status", "data" The "synchronizing state" and the "synchronized state" are the same as the application state data in the above embodiment, the unsynchronized state data, the synchronizing state data, and the functions and functions of the synchronized state data.

The operation steps of the main control unit, the standby main control unit, and the service processing unit are separately described below.

First, the main control unit operation steps.

If the active master unit is in the "active state", handle the following events:

1. After receiving the application data event of the service processing unit, the data is set to the "unsynchronized state" and saved to the local service and sent to the service processing unit. The data sent to the service processing unit carries the status of "unsynchronized status". The data sent by the main control unit to the service processing unit can carry not only status information, but also other information, such as unique identification information of the data.

2. Receive the online event of the standby main control unit, set the locally saved data of “unsynchronized status” to “synchronizing status”, and then set the status of this unit to “active and standby status” to start synchronizing data. Go to the alternate master unit.

3. Receive the synchronization completion event and do not process it.

4. Receive other events and record the exception log.

If the active MME is in the Active/Standby state, handle the following events:

1. Receive the application data event of the service processing unit, and find the local data. If the data does not exist, after the data is processed correspondingly, the data is set to “unsynchronized state”, saved to the local and synchronized to the standby main control unit; If the data already exists locally and is in the "synchronized state", the data is sent to the line card in the local state; if the local data is in other states, it is not processed.

2. Receive the data confirmation event of the standby main control unit. If the local data is in the “synchronizing state”, set the data to “synchronized state” and judge if there is no data in the “synchronizing state”, then the standby master The unit and the service processing unit send a synchronization completion event; if the local data is in the "unsynchronized state", the data is set to the "synchronized state" and sent to the service processing unit; if the local data is in another state, no processing is performed.

3. Receive the active/standby switchover event and set the unit to "standby state".

4. Receive the offline event of the standby master unit, set all data to “unsynchronized state”, send a synchronization clear event to the service processing unit, and set the unit to “active state”.

5. Receive other events and record the exception log.

Second, the standby main control unit operation steps.

The standby master unit is the master unit in the "standby state", and handles the following events:

1. Receive the data event sent by the main control unit, save the data to the local, and set the data to “synchronized state” to send a data confirmation event to the main control unit.

2. Receive the synchronization completion event sent by the main control unit, and delete all the data that is not in the "synchronized state".

3. Upon receiving the active/standby switchover event, all the data that is not in the "synchronized state" is deleted first, and the active/standby switchover event is sent to the service processing unit, and the unit is set to "data recovery state".

4. The offline event of the main control unit is received, and all the local data is changed to the “unsynchronized state”, and the active/standby switching event is sent to the service processing unit, and the unit is set to the “active state”.

5. Receive other events and record the exception log.

The main control unit is in the "data recovery state" steps:

1. Receive the data request event of the service processing unit. If the data already exists in the local area, set the local data to “unsynchronized state”, and synchronize the data to the standby main control unit; if the data does not exist locally, save the data to Local, set to "unsynchronized state" to synchronize the data to the alternate master unit.

2. Receive the data confirmation event of the standby main control unit, modify the local data to “synchronized state”, and send back data to the service processing unit.

3. Receive the synchronization completion event, delete the data that is not in the "synchronized state", send the synchronization completion time to the standby main control unit, and set the board to the active/standby state.

4. Receive other events and record the exception log.

Third, the business processing unit operation steps.

The service processing unit needs to process the service configuration and synchronize the service data to the main control unit as needed. How the service processing unit handles the service configuration is not within the scope of the present invention. The service processing unit only communicates with the active main control unit and does not communicate with the standby main control unit. The business processing unit handles the following events:

1. Receive the service configuration event, send the service data to the active main control unit as needed, and set the data to the "application status" locally.

2. Receive the data confirmation event sent by the main control unit. If the local data is in the "synchronizing state", this will be The ground data is modified to "synchronized state", and it is judged that if there is no "synchronizing state" data, a synchronization completion event is sent to the main control unit; if the local data is in other states, the local data is modified to "synchronized state" .

3. Receive the synchronization completion event of the main control unit, and set all local data in the “unsynchronized state” to “synchronized state”.

4. Receive the active/standby switchover event, modify the data in the "unsynchronized state" and "application state" to "synchronizing state", and then send the data of "synchronizing state" to the new active main control unit; If all data is in the "synchronized state", a synchronization completion event is sent to the active master unit.

5. Receive a sync clear event and set all data in the "synchronized state" to "unsynchronized state".

6. Receive other events and record the exception log.

Through the above embodiments, each unit can perform active/standby switchover at any time. After the active/standby switchover, the new standby master control unit does not need to be restarted, and continuous active/standby switchover can be performed.

In another preferred embodiment of the present invention, the main control unit is an NCP and the service processing unit is a line card. The following is a detailed description of a typical NCP, a standby NCP, and a typical line card.

Scenario 1, data is normally synchronized. FIG. 5 is a schematic diagram of a normal data synchronization process according to a preferred embodiment of the present invention, as shown in FIG.

In step 1, the line card sends data 1 to the main NCP, and the data 1 is "application status" on the line card.

Step 2: After receiving the data of the line card, the primary NCP saves to the local area and synchronizes to the line card, and the data 1 is “unsynchronized state” on the primary NCP.

Step 3: After receiving the data of the primary NCP, the standby NCP saves it to the local area and sends a confirmation to the primary NCP. The data 1 is in the "synchronized state" on the standby NCP.

Step 4: After receiving the confirmation of the standby NCP, the primary NCP modifies the local data to the “synchronized state” and sends it to the line card.

Step 5: After receiving the data of the primary NCP, the line card modifies the local data to “synchronized state”.

In scenario 2, after the data is synchronized, the active/standby switching scenario occurs. FIG. 6 is a schematic diagram of performing an active/standby switching process according to a preferred embodiment of the present invention, as shown in FIG. 6.

Step 1: The master NCP receives the active/standby switchover event and modifies the board as the “standby state”.

Step 2: The standby NCP receives the active/standby switchover event, and the board is modified to “data recovery state”, and then the active/standby switchover event is sent to the line card.

Step 3: The line card receives the active/standby switchover event, and changes all the data of the “unsynchronized state” and the “application state” to the “synchronizing state”. In this scenario, all data is "synchronized" and a synchronization completion event is sent to the primary NCP.

In scenario 3, the active and standby NCPs perform active/standby switchover during normal data synchronization. Figure 7 is a preferred implementation in accordance with the present invention The master/slave NCP performs the active/standby switchover process during normal data synchronization, as shown in Figure 7.

The line card has data 1 and data 2, data 1 is "synchronized state", and data 2 is "unsynchronized state". The primary NCP has data 1 and data 2, data 1 is "synchronized state", and data 2 is "unsynchronized state". The standby NCP has data 1, and the data 1 is "synchronized state". When the primary NCP has not synchronized data 2 to the standby NCP, the active/standby switchover occurs.

In step 1, the primary NCP receives the active/standby switchover event and changes the board to the "standby state".

In the second step, the standby NCP receives the active/standby switchover event and changes the board to the data recovery state to send the active/standby switchover event to the line card.

Step 3: After receiving the active/standby switchover event, the line card changes the data 2 to “synchronizing state” and sends data 2 to the primary NCP.

Step 4: The master NCP receives the data 2 of the line card, saves the data 2 to the local, sets the status to "unsynchronized state", and sends data 2 to the standby NCP.

In step 5, the standby NCP receives the data 2 of the primary NCP, changes the data 2 to the "synchronized state", and returns the data 2 to confirm.

In step 6, the main NCP receives the data 2 confirmation, and the data 2 is modified to the "synchronized state", and the data 2 is sent back to the line card.

Step 7: The line card receives the main NCP data 2, and the data 2 is modified to the “synchronized state”, and the synchronization completion event is sent to the main NCP.

In step 8, the primary NCP receives the synchronization completion event and sends a synchronization completion event to the standby NCP.

In step IX, the standby NCP receives the synchronization completion event and does nothing.

At this point, the data and status of the primary NCP, the standby NCP, and the line card are consistent.

In scenario 4, after the standby NCP is inserted, the active and standby devices perform data batch synchronization. FIG. 8 is a schematic diagram of a flow of data batch synchronization by inserting a standby NCP according to a preferred embodiment of the present invention, as shown in FIG. 8.

Both the line card and the primary NCP have data 1 and the status is "unsynchronized". If you plug in the standby NCP board, the processing steps are as follows:

Step 1: The primary NCP receives the standby NCP online event, sets the data 1 to the “synchronizing state”, and modifies the board to the “active/standby state” to synchronize data 1 with the standby NCP.

In the second step, the standby NCP receives the data 1 and saves it to the local state. The status is “synchronized state”, and the data is acknowledged to the primary NCP.

In step 3, the primary NCP receives the data 1 acknowledgment, and modifies the data 1 to the "synchronized state", and sends a synchronization completion event to the standby NCP and the primary NCP.

Step 4: The standby NCP receives the synchronization completion event, and deletes all data that is not “synchronized state”. At this time, no data needs to be deleted.

In step 5, the line card receives the synchronization completion event, and the data 1 is modified to the “synchronized state”.

Scenario 5: During the data synchronization between the active and standby devices, the active/standby switchover occurs. FIG. 9 is a schematic diagram of an active/standby switchover process performed during data synchronization between the active and standby devices according to a preferred embodiment of the present invention, as shown in FIG. 9.

The line card has data 1, the status is "synchronized state", data 2, the status is "unsynchronized state"; the main NCP has data 1, the status is "synchronized state", the data 2 is "unsynchronized state"; the standby NCP There are data 1 and data 2, and the status is "synchronized state". The master/slave switchover occurs when the standby NCP has not sent data 2 to the master NCP for confirmation.

Step 1: The master NCP receives the active/standby switchover event and sets the board to the standby state.

Step 2: The standby NCP receives the active/standby switchover event, and sets the board to the data recovery state to send the active/standby switchover event to the line card.

Step 3: The line card receives the active/standby switchover event, and sets the data 2 to “synchronizing state” to send data 2 to the primary NCP.

Step 4: The primary NCP receives the data 2, and the data 2 is modified to the "unsynchronized state", and the data 2 is synchronized to the standby NCP.

In step 5, the standby NCP receives the data 2, sets the data 2 to the "synchronized state", and sends a data 2 confirmation to the primary NCP.

In step 6, the master NCP receives the data 2 acknowledgment, and modifies the data 2 to the "synchronized state", and sends the data 2 to the line card.

Step 7: The line card receives the data 2, and the data 2 is modified to the "synchronized state", and the synchronization completion is sent to the main NCP.

In step 8, the primary NCP receives the synchronization completion and sends a synchronization completion event to the standby NCP.

Step 9. The standby NCP receives the synchronization completion event and does not process it.

The preferred embodiment avoids abnormal faults caused by data synchronization through a double acknowledgement mechanism, and can fundamentally ensure that data of the master unit, the standby master unit, and the service processing unit (possibly multiple) are consistent at any time. State. This avoids a series of problems caused by data inconsistency.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the storage medium may be configured to store program code for performing the method steps of the above embodiment:

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in the embodiment, the processor executes the method of the above embodiment according to the stored program code in the storage medium.

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.

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 present invention are intended to be included within the scope of the present invention.

Industrial applicability

According to the foregoing technical solution provided by the embodiment of the present invention, the main control unit receives the application status data sent by the service processing unit, and the main control unit modifies the application status data to the unsynchronized status data, and the main control unit The unit synchronizes the unsynchronized state data to the service processing unit; the master control unit modifies the unsynchronized state data to the synchronization state data, and the master control unit synchronizes the synchronization state data to the standby master unit The master control unit receives the confirmation message, the confirmation message includes the confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the data in the synchronization state to The data of the synchronized state, the main control unit synchronizes the data of the synchronized state to the service processing unit, solves the problem of abnormal fault caused by data unsynchronization, realizes consistency of data of each unit, and saves maintenance cost. .

Claims

A data synchronization method includes:

The main control unit receives the application status data sent by the service processing unit, the main control unit modifies the application status data into unsynchronized status data, and the main control unit synchronizes the unsynchronized status data. Giving the business processing unit;

The main control unit modifies the unsynchronized state data to be synchronizing state data, and the main control unit synchronizes the synchronizing state data to the standby main control unit;

The main control unit receives an acknowledgement message, the confirmation message includes a confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, and the main control unit modifies the synchronization. The data of the state is the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.
The method of claim 1 further comprising:

Receiving, by the active main control unit, an active/standby switching event, and sending the active/standby switching event to the service processing unit;

In a case where the data states in the service processing unit are all in a synchronized state, the primary control unit receives a synchronization completion event sent by the service processing unit.
The method of claim 1 further comprising:

Receiving, by the active main control unit, an active/standby switching event, and sending the active/standby switching event to the service processing unit;

In the case that the service processing unit includes the unsynchronized state data or the application state data, the main control unit receives the synchronization state data, wherein the synchronization state data is the service processing unit. Modifying the unsynchronized state data or the application state data;

The main control unit modifies the synchronization status data to unsynchronized status data, and the main control unit sends the unsynchronized status data to the standby main control unit;

The primary control unit receives an acknowledgement message, the acknowledgement message includes a confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the The data of the unsynchronized state is data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.
A data synchronization method includes:

The main control unit receives an online event of the standby main control unit, the main control unit modifies the unsynchronized status data to the synchronized state, and the main control unit sends the synchronizing status data to the standby Main control unit

The primary control unit receives an acknowledgement message, the acknowledgement message includes a confirmation content that the standby master unit modifies the synchronized state data to the synchronized state data, and the master control unit modifies the Being in the same The data of the step state is data of the synchronized state, and the master control unit synchronizes the data of the synchronized state to the service processing unit.
The method according to claim 1, wherein after the primary control unit modifies the data of the synchronized state to the synchronized state, the method comprises:

The active main control unit sends a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local non-synchronized state data.
A data synchronization device comprising:

The first receiving module is configured to receive, by the main control unit, application status data sent by the service processing unit, where the main control unit modifies the application status data into unsynchronized status data, and the main control unit The unsynchronized state data is synchronized to the service processing unit;

a first modifying module, configured to: the primary control unit modifies the unsynchronized state data to be synchronized state data, and the primary MME synchronizes the synchronized state data to the standby MME;

a first confirmation module, configured to receive, by the primary control unit, an acknowledgement message, where the confirmation message includes a confirmation content that the standby control unit modifies the synchronized state data to the synchronized state data, the primary The data of the synchronization state is modified by the main control unit to be the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.
The apparatus of claim 6 further comprising:

The first switching module is configured to receive the active/standby switching event by the active main control unit, and send the active/standby switching event to the service processing unit;

The second receiving module is configured to receive, when the data states in the service processing unit are in a synchronized state, the primary control unit receives a synchronization completion event sent by the service processing unit.
The apparatus of claim 6 further comprising:

The second switching module is configured to receive the active/standby switching event by the active main control unit, and send the active/standby switching event to the service processing unit;

a third receiving module, configured to: when the service processing unit includes the unsynchronized state data or the application state data, the main control unit receives the synchronization state data, where the synchronization state is Data is that the service processing unit modifies the unsynchronized state data or the application state data;

a second modification module, configured to: the main control unit modifies the synchronization status data into unsynchronized status data, and the main control unit sends the unsynchronized status data to the standby main control unit;

a second confirmation module, configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, the main Modifying, by the main control unit, the data of the unsynchronized state into data of a synchronized state, where the main control unit synchronizes the The data of the synchronization state is sent to the service processing unit.
A data synchronization device comprising:

a third modification module, configured to receive an online event of the standby main control unit, wherein the main control unit modifies the unsynchronized state data to the synchronization state, and the main control unit sends the ongoing Synchronizing status data to the standby master unit;

a third confirmation module, configured to receive, by the main control unit, an acknowledgement message, where the confirmation message includes the confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, the main The data of the synchronization state is modified by the main control unit to be the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.
The device of claim 9 wherein said device comprises:

And deleting the module, the primary control unit is configured to send a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local non-synchronized state data.
A data synchronization system includes: an active main control unit, a standby main control unit, and a service processing unit;

The main control unit receives the application status data sent by the service processing unit, the main control unit modifies the application status data into unsynchronized status data, and the main control unit Synchronizing state data to the service processing unit;

The main control unit modifies the unsynchronized state data to be synchronizing state data, and the main control unit synchronizes the synchronizing state data to the standby main control unit;

The main control unit receives an acknowledgement message, the confirmation message includes a confirmation content that the standby main control unit modifies the synchronized state data to the synchronized state data, and the main control unit modifies the synchronization. The data of the state is the data of the synchronized state, and the main control unit synchronizes the data of the synchronized state to the service processing unit.