CN106657168A - Method, device and system for synchronizing data - Google Patents

Abstract

The present invention provides a method, device and system for synchronizing data. 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. The main control unit synchronizes the unsynchronized state data to the business processing unit; the active main control unit modifies the unsynchronized state data to the synchronizing state data, and the active main control unit synchronizes the synchronizing state data to the standby main control unit unit; the active main control unit receives the confirmation message, and the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the synchronizing state data as For the data in the synchronized state, the main control unit synchronizes the data in the synchronized state to the business processing unit, which solves the problem of abnormal faults caused by data out of synchronization, realizes the consistency of data in each unit, and saves maintenance costs .

Description

Method, device and system for synchronizing data

technical field

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

Background technique

In Synchronous Digital Hierarchy (SDH) equipment, Dense Wavelength Division Multiplexing (DWDM) equipment, Packet Transport Network (PTN) equipment, Network Control Protocol (Network Control Protocol, referred to as NCP) equipment, and Optical Transport Network (Optical Transport Network, referred to as OTN) equipment, because the services carried by them have very high real-time and reliability requirements, the main control unit is used as the data of equipment configuration data Center, the synchronization function of its configuration data is very important. The main control unit often has one or more backup main control units, that is to say, the synchronization of configuration data includes two contents: the data synchronization between the main control unit and the standby main control unit, this synchronization is the action of copying and backup ; Data synchronization between the main control unit and the business processing unit, this synchronization is an action of sending and answering.

In related technologies, the two data synchronizations operate independently. Although the processing is simple, the effect is often not good. For example: when the main control unit sends data, if the main control unit fails at this time, the data configuration of the main control unit is not synchronized successfully, and the backup main control unit does not have this data, often Data will be abnormal, resulting in abnormal operation of equipment, and even business interruption, which cannot be recovered. 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 for equipment maintenance, resulting in waste of resources.

Aiming at the abnormal failure caused by data out-of-sync in related technologies, no effective solution has been proposed yet.

Contents of the invention

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

According to one aspect of the present invention, a data synchronization method is provided, including:

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

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

The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the synchronizing state is the data in the synchronizing state, and the master main control unit synchronizes the data in the synchronizing state to the service processing unit.

Further, the active master control unit receives the active-standby switchover event, and sends the active-standby switchover event to the service processing unit;

In the case that the data states in the service processing unit are all in the synchronized state, the active master control unit receives the synchronization completion event sent by the service processing unit.

Further, the active master control unit receives the active-standby switchover event, and sends the active-standby switchover event to the service processing unit;

In the case that the service processing unit includes the unsynchronized status data or the application status data, the active master control unit receives the synchronizing status data, wherein the synchronizing status data is the status data of the service processing unit Modifying the unsynchronized status data or the application status data;

The active main control unit modifies the synchronizing state data into unsynchronized state data, and the active main control unit sends the unsynchronized state data to the standby main control unit;

The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the unsynchronized state is the data in the synchronized state, and the master main control unit synchronizes the data in the synchronized state to the service processing unit.

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

The active main control unit receives the online event of the standby main control unit, the active main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the synchronizing state data to the standby main control unit;

The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the synchronizing state is the data in the synchronizing state, and the master main control unit synchronizes the data in the synchronizing state to the service processing unit.

Further, after the active master control unit modifies the data in the synchronizing state to the data in the synchronizing 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 data that is not in a synchronized state.

According to another aspect of the present invention, a data synchronization device is also provided, including:

The first receiving module is used for the active main control unit to receive the application status data sent by the service processing unit, the active main control unit modifies the application status data to unsynchronized state data, and the active main control unit will The unsynchronized state data is synchronized to the business processing unit;

The first modification module is used for the active main control unit to modify the unsynchronized state data to the synchronizing state data, and the active main control unit synchronizes the synchronizing state data to the standby main control unit;

The first confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit The main control unit is used to synchronize the data in the synchronized state to the service processing unit.

Further, the first switching module is used for the active main control unit to receive the active-standby switchover event, and send the active-standby switchover event to the service processing unit;

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

Further, the second switching module is used for the active main control unit to receive the active-standby switchover event, and send the active-standby switchover event to the service processing unit;

The third receiving module is configured to, when the service processing unit includes the unsynchronized state data or the application state data, the active main control unit receives the synchronizing state data, wherein the synchronizing state The data is modified by the business processing unit from the unsynchronized status data or the application status data;

The second modification module is used for the active main control unit to modify the synchronizing state data to unsynchronized state data, and the active main control unit sends the unsynchronized state data to the standby main control unit;

The second confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit The master control unit modifies the data in the unsynchronized state to the data in the synchronized state, and the master master control unit synchronizes the data in the synchronized state to the service processing unit.

According to another aspect of the present invention, a data synchronization device is also provided, including:

The third modification module is used for the active main control unit to receive the online event of the standby main control unit, the active main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the in-progress synchronizing status data to the standby master control unit;

The third confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit The master control unit modifies the data in the synchronizing state to the data in the synchronized state, and the master master control unit synchronizes the data in the synchronized state to the service processing unit.

Further, the device includes:

A deletion module, configured for the active main control unit to send a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local data that is not in a synchronized state.

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

The active main control unit receives the application state data sent by the service processing unit, the active main control unit modifies the application state data into unsynchronized state data, and the active main control unit modifies the unsynchronized state data. The synchronization state data is synchronized to the business processing unit;

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

The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the synchronizing state is the data in the synchronizing state, and the master main control unit synchronizes the data in the synchronizing state to the service processing unit.

Through the present invention, the main control unit is used to receive 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 modifies the unsynchronized status data Synchronize to the business processing unit; the active master control unit modifies the unsynchronized state data to the synchronizing state data, and the active master control unit synchronizes the synchronizing state data to the standby master control unit; the active master control unit Receiving a confirmation message, the confirmation message includes the confirmation content of the backup master control unit modifying the synchronizing state data to the synchronized state data, the active master control unit modifies the synchronizing state data to the synchronized state data, the The main control unit synchronizes the data in the synchronized state to the business processing unit, which solves the problem of abnormal faults caused by data asynchronization, realizes the consistency of data in each unit, and saves maintenance costs.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

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

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

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

FIG. 4 is a second structural block diagram of a data synchronization device according to an embodiment of the present invention;

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

FIG. 6 is a schematic diagram of a flow chart of active/standby switchover according to a preferred embodiment of the present invention;

Fig. 7 is a schematic diagram of the master-standby switchover process during the normal data synchronization process of the master-standby NCP according to a preferred embodiment of the present invention;

Fig. 8 is a schematic flow diagram of plugging in a standby NCP to perform data batch synchronization according to a preferred embodiment of the present invention;

Fig. 9 is a schematic diagram of a master-standby switchover process during data synchronization between the master and the backup according to a preferred embodiment of the present invention.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. 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 with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

In this embodiment, a data synchronization method is provided. FIG. 1 is a flow chart 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 active main control unit receives the application status data sent by the service processing unit, the main main control unit modifies the application status data into unsynchronized state data, and the active main control unit synchronizes the unsynchronized state data to the business processing unit;

Step S104, the active master control unit modifies the unsynchronized state data to the synchronizing state data, and the active master control unit synchronizes the synchronizing state data to the standby master control unit;

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

Through the above steps, the active main control unit receives the application status data sent by the business processing unit, the main main control unit modifies the application status data into unsynchronized state data, and the active main control unit synchronizes the unsynchronized state data For the service processing unit, the active master control unit modifies the unsynchronized state data to the synchronizing state data, the active master control unit synchronizes the synchronizing state data to the standby master control unit, and the active master control unit receives A confirmation message, the confirmation message includes the confirmation content that the standby master control unit modifies the synchronized state data to the synchronized state data, the active master control unit modifies the synchronized state data to the synchronized state data, the master Using the main control unit to synchronize the data in the synchronized state to the business processing unit solves the problem of abnormal faults caused by data asynchronization, realizes the consistency of data in each unit, and saves maintenance costs.

In this embodiment, the active master control unit receives the active-standby switchover event and sends the active-standby switchover event to the service processing unit. The master main control unit receives the synchronization completion event sent by the service processing unit.

In this embodiment, the active master control unit receives the active-standby switchover event, and sends the active-standby switchover 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 active main control unit receives the synchronizing state data, wherein the synchronizing state data is the unsynchronized state data or the application state data modified by the business processing unit, and the active main control unit modifies the synchronizing state data The data is modified to unsynchronized state data, the active master control unit sends the unsynchronized state data to the standby master control unit, and the active master control unit receives an acknowledgment message, the acknowledgment message includes that the standby master control unit will be synchronizing The state data modifies the confirmation content of the synchronized state data, the active master control unit modifies the unsynchronized state data to the synchronized state data, and the active master control unit synchronizes the synchronized state data to the business processing unit .

In this embodiment, a data synchronization method is provided. FIG. 2 is a flowchart 2 of a data synchronization method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, the active main control unit receives the online event of the standby main control unit, the main main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the synchronizing state data to the standby main control unit control unit;

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

Through the above steps, when the active main control unit receives the online event of the standby main control unit, the main main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the synchronizing state data to the standby The master control unit, after the active master control unit receives the confirmation from the backup master control unit that the data in the synchronizing state has been modified to the data in the synchronized state, the master master control unit modifies the data in the synchronizing state to the data in the synchronized state Data, the main control unit synchronizes the synchronized data to the business processing unit, which solves the problem of abnormal faults caused by data out-of-sync, realizes the consistency of data in each unit, and saves maintenance costs.

In this embodiment, after the active main control unit modifies the data in the synchronizing state to the data in 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 The main control unit deletes the local data that is not in the synchronized state.

In this embodiment, a data synchronization device is also provided, which is used to implement the above embodiments and preferred implementation modes, and what has already been described will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

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

The first receiving module 32 is used for the main control unit to receive the application status data sent by the business processing unit, the main control unit modifies the application status data to unsynchronized status data, and the main control unit modifies the unsynchronized status data. The synchronization state data is synchronized to the business processing unit;

The first modifying module 34 is used for the active main control unit to modify the unsynchronized state data to the synchronizing state data, and the active main control unit synchronizes the synchronizing state data to the standby main control unit;

The first confirmation module 36 is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the synchronizing state is the data in the synchronizing state, and the main control unit synchronizes the data in the synchronizing state to the service processing unit.

In this embodiment, the device further includes: a first switching module, configured for the active main control unit to receive the active-standby switchover event, and send the active-standby switchover event to the service processing unit;

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

In this embodiment, the device further includes: a second switching module, configured for the active main control unit to receive the active-standby switchover event and send the active-standby switchover event to the service processing unit;

The third receiving module is configured to receive the synchronizing status data by the active main control unit when the business processing unit includes the unsynchronized status data or the application status data, wherein the synchronizing status data is the business processing The unit modifies the unsynchronized status data or the application status data;

The second modifying module is used for the active main control unit to modify the synchronizing state data into unsynchronized state data, and the active main control unit sends the unsynchronized state data to the standby main control unit;

The second confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content of the standby main control unit modifying the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the unsynchronized state is the data in the synchronized state, and the master main control unit synchronizes the data in the synchronized state to the service processing unit.

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

The third modification module 42 is used for the active main control unit to receive the online event of the standby main control unit, the main main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the synchronizing state data to the standby main control unit;

The third confirmation module 44 is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the synchronizing state is the data in the synchronizing state, and the main control unit synchronizes the data in the synchronizing state to the service processing unit.

In this embodiment, the device also includes:

The deletion module is used for the active main control unit to send a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local data that is not in the synchronized state.

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

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

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

The active main control unit receives the confirmation message, and the confirmation message includes the confirmation content that the backup main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the synchronizing state data as already For the data in the synchronized state, the main control unit synchronizes the data in the synchronized state to the service processing unit.

The present invention will be described in detail below in combination with preferred embodiments and implementation modes.

This preferred embodiment provides a data synchronization mechanism to realize the data consistency of the main main control unit, the backup main control unit and the service processing unit (there may be multiple). The functions and functions of the units are the same as those of the active main control unit, backup main control unit and business processing unit in the above embodiments, and a series of problems caused by data inconsistency can be avoided.

The method described in this preferred embodiment divides the main control unit into three states: "main state", "standby state", "main-standby state" and "data recovery state". Among them, "active state" means that there is only active main control unit, and there is no standby main control unit; ” means that there are both active main control unit and standby main control unit, and this unit is the main main control unit. "Data recovery state" is a transient state in which the main control unit and business processing unit perform data recovery after active/standby switchover. There is no situation where there is only a standby main control unit and no active main control unit. The state negotiation between the main control units can be carried out in any way.

In this preferred embodiment, the data to be synchronized is divided into "application status", "unsynchronized status", "synchronizing status" and "synchronized status", and the "application status", "unsynchronized status", " "Synchronizing status" and "Synchronized status" have the same functions and functions as the application status data, unsynchronized status data, synchronizing status data, and synchronized status data in the above-mentioned embodiments.

The operation steps of the active main control unit, the backup main control unit and the service processing unit are described respectively below.

1. Operation steps of the master main control unit.

If the active main control unit is in the "active state", the processing method for the following events:

1. After receiving the application data event from the business processing unit, after corresponding processing, set the data to "unsynchronized state", save it locally and send it to the business processing unit. The data sent to the service processing unit carries the status of "unsynchronized status". The data delivered by the main control unit to the service processing unit can not only carry status information, but also carry other information, such as unique identification information of the data.

2. After receiving the online event of the standby main control unit, set the data saved locally and in the "unsynchronized state" to "synchronizing state", and then set the state of this unit to "active and standby state" to start synchronizing data to the standby master control unit.

3. The synchronization completion event is received and not processed.

4. When other events are received, record the exception log.

If the active main control unit is in the "active/standby state", the processing method for the following events:

1. After receiving the application data event from the business processing unit, search for local data. If the data does not exist, after processing the data accordingly, set the data to "unsynchronized state", save it locally and synchronize it to the standby master control unit; If the data already exists locally and is in the "synchronized state", send the data to the line card in the local state; if the local data is in other states, it will not be processed.

2. After receiving the data confirmation event from the standby master control unit, if the local data is in the "synchronizing state", set the data to the "synchronized state", and judge that if there is no data in the "synchronizing state", send the data to the standby master control unit The unit and the business processing unit send synchronization completion events; if the local data is in the "unsynchronized state", set the data to the "synchronized state" and send it to the business processing unit; if the local data is in other states, do nothing.

3. After receiving the master-standby switchover event, set the unit to "standby state".

4. After receiving the offline event of the standby main control unit, set all data to "unsynchronized state", send a synchronization clear event to the business processing unit, and set this unit to "active state".

5. When other events are received, record the exception log.

2. Operation steps of standby main control unit.

The standby main control unit is the main control unit in the "standby state", and the processing method for the following events:

1. After receiving the data event sent by the main control unit, save the data locally, set the data to "synchronized state", and send a data confirmation event to the main control unit.

2. After receiving the synchronization completion event sent by the main control unit, all the local data that is not in the "synchronized state" are deleted.

3. Upon receipt of the master-standby switchover event, first delete all local data that is not in the "synchronized state", send the master-standby switchover event to the business processing unit, and set the unit to the "data recovery state".

4. After receiving the off-line event of the active main control unit, modify all local data to "unsynchronized state", send the active/standby switchover event to the business processing unit, and set this unit to "active state".

5. When other events are received, record the exception log.

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

1. After receiving the data application event from the business processing unit, if the data already exists locally, set the local data to "unsynchronized state" and synchronize the data to the standby master control unit; if the data does not exist locally, save the data to Local, set to "unsynchronized state", and synchronize the data to the standby master control unit.

2. After receiving the data confirmation event from the standby main control unit, modify the local data to "synchronized state", and send the data back to the business processing unit.

3. After receiving the synchronization completion event, delete the local data that is not in the "synchronized state", send the synchronization completion time to the standby master control unit, and set the board as the "active state".

4. When other events are received, record the exception log.

3. Operation steps of the business processing unit.

The service processing unit needs to process the service configuration and synchronize the service data to the main control unit as required. How the service processing unit processes the service configuration does not belong to the discussion 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 processing method of the business processing unit for the following events:

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

2. After receiving the data confirmation event sent by the main control unit, if the local data is in the "synchronizing state", modify the local data to "synchronized state", and judge that if there is no "synchronizing state" data, send to The main control unit sends a synchronization completion event; if the local data is in another state, modify the local data to "synchronized state".

3. After receiving the synchronization completion event of the main master control unit, set all the local data in the "unsynchronized state" to the "synchronized state".

4. After receiving the master-standby switchover event, modify the data in the "unsynchronized state" and "application state" to "synchronizing state", and then send the data in the "synchronizing state" to the new active master control unit; If all data are in the "synchronized state", a synchronization complete event is sent to the active master control unit.

5. After receiving the synchronization clear event, set all the data in the "synchronized state" to "unsynchronized state".

6. When other events are received, record the exception log.

Through the above embodiment, each unit can perform master-standby switchover at any time. After the master-standby switchover, the new standby master control unit can perform continuous master-standby switchover without restarting.

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 describes in detail the typical situation of one active NCP, one standby NCP, and one line card.

Scenario 1, normal data synchronization, 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. 5 .

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 from the line card, the master NCP saves it locally and synchronizes it to the line card. Data 1 is in an "unsynchronized state" on the master NCP.

Step 3: After receiving the data from the primary NCP, the standby NCP saves it locally, 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 from the standby NCP, the master NCP modifies the local data to "synchronized state" and sends it to the line card.

Step 5: After the line card receives the data from the master NCP, it modifies the local data to "synchronized state".

Scenario 2: after the data is normally synchronized, a master-standby switchover scenario occurs. FIG. 6 is a schematic diagram of a master-standby switchover process according to a preferred embodiment of the present invention, as shown in FIG. 6 .

Step 1, the master NCP receives the master-standby switchover event, and modifies the board to be in the "standby state".

Step 2: The standby NCP receives the master-standby switchover event, modifies the board to the "data recovery state", and then sends the master-standby switchover event to the line card.

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

Scenario 3: Active/standby NCPs perform active/standby switchover during normal data synchronization. Fig. 7 is a schematic diagram of the master-standby switchover process during the normal data synchronization process of the master-standby NCP according to a preferred embodiment of the present invention, as shown in Fig. 7 .

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

Step 1, the master NCP receives the master-standby switchover event, and modifies the board to the "standby state".

Step 2: The standby NCP receives the master-standby switchover event, modifies the board to the "data recovery state", and sends the master-standby switchover event to the line card.

Step 3: After receiving the active/standby switchover event, the line card modifies the data 2 to "synchronizing state", and sends the data 2 to the active NCP.

Step 4, the master NCP receives the data 2 of the line card, saves the data 2 locally, sets it as "unsynchronized state", and sends the data 2 to the standby NCP.

Step 5, the standby NCP receives the data 2 of the primary NCP, modifies the data 2 to "synchronized state", and sends back the data 2 for confirmation.

Step 6, the master NCP receives the data 2 confirmation, modifies the data 2 to "synchronized state", and sends the data 2 back to the line card.

Step 7, the line card receives the master NCP data 2, modifies the data 2 to "synchronized state", and sends a synchronization completion event to the master NCP.

Step 8, the active NCP receives the synchronization completion event, and sends the synchronization completion event to the standby NCP.

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

So far, the data and status of the active NCP, standby NCP, and line card are consistent.

Scenario 4: After the standby NCP is plugged in, the master and slave perform batch data synchronization. Fig. 8 is a schematic flow diagram of plugging in a standby NCP to perform data batch synchronization 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 state is "unsynchronized state". If the standby NCP board is inserted, the processing steps are as follows:

Step 1: The active NCP receives the online event of the standby NCP, sets data 1 to "synchronizing state", changes the board to "active and standby state", and synchronizes data 1 to the standby NCP.

Step 2: The standby NCP receives data 1, saves it locally, and the state is "synchronized", and sends data 1 back to the primary NCP for confirmation.

Step 3: The primary NCP receives the confirmation of data 1, modifies the data 1 to "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 in the "synchronized state", and there is no data to be deleted at this time.

Step 5, the line card receives the synchronization completion event, and modifies data 1 to "synchronized state".

So far, the data and status of the active NCP, standby NCP, and line card are consistent.

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

The line card has data 1, the state is "synchronized state", data 2, the state is "unsynchronized state"; the primary NCP has data 1, the state is "synchronized state", and data 2 is "unsynchronized state"; the standby NCP There are data 1 and data 2, and the status is "synchronized status". When the standby NCP has not sent a data 2 confirmation to the active NCP, an active/standby switchover occurs.

Step 1, the master NCP receives the master-standby switchover event, and sets the board to the "standby state".

In step 2, the standby NCP receives the master-standby switchover event, sets the board as a "data recovery state", and sends the master-standby switchover event to the line card.

Step 3, the line card receives the active/standby switchover event, sets the data 2 to "synchronizing state", and sends the data 2 to the active NCP.

Step 4, the primary NCP receives the data 2, modifies the data 2 to "unsynchronized state", and synchronizes the data 2 to the standby NCP.

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

Step 6, the master NCP receives the data 2 confirmation, modifies the data 2 to "synchronized state", and sends the data 2 to the line card.

Step 7, the line card receives the data 2, modifies the data 2 to "synchronized state", and sends the synchronization completion to the master NCP.

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.

So far, the data and status of the active NCP, standby NCP, and line card are consistent.

This preferred embodiment avoids abnormal failures caused by data synchronization through the double confirmation mechanism, and can fundamentally ensure that the data of the main control unit, the standby main control unit and the business processing unit (there may be multiple) are consistent at any time status. In this way, a series of problems caused by data inconsistency can be avoided.

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the foregoing storage medium may be configured to store program codes for executing the method steps of the foregoing embodiments:

Optionally, in this embodiment, the above-mentioned storage medium may include but not limited to: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk Various media that can store program codes such as discs or optical discs.

Optionally, in this embodiment, the processor executes the methods in the foregoing embodiments according to the program code stored in the storage medium.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases, in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. A data synchronization method, characterized in that, comprising: The active main control unit receives the application status data sent by the service processing unit, the main main control unit modifies the application status data to unsynchronized state data, and the active main control unit synchronizes the unsynchronized state data to the business processing unit; The active main control unit modifies the unsynchronized state data to the synchronizing state data, and the active main control unit synchronizes the synchronizing state data to the standby main control unit; The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the synchronizing state data. The state data is data in a synchronized state, and the active main control unit synchronizes the data in a synchronized state to the service processing unit. 2. The method according to claim 1, further comprising: The active main control unit receives the active-standby switchover event, and sends the active-standby switchover event to the service processing unit; In the case that the data states in the service processing unit are all in the synchronized state, the active master control unit receives the synchronization completion event sent by the service processing unit. 3. The method according to claim 1, further comprising: The active main control unit receives the active-standby switchover event, and sends the active-standby switchover event to the service processing unit; In the case that the service processing unit includes the unsynchronized status data or the application status data, the active master control unit receives the synchronizing status data, wherein the synchronizing status data is the status data of the service processing unit Modifying the unsynchronized status data or the application status data; The active main control unit modifies the synchronizing state data into unsynchronized state data, and the active main control unit sends the unsynchronized state data to the backup main control unit; The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the unsynchronized state is the data in the synchronized state, and the master main control unit synchronizes the data in the synchronized state to the service processing unit. 4. A data synchronization method, characterized in that, comprising: The active main control unit receives the online event of the standby main control unit, the active main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the synchronizing state data to the standby main control unit; The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the The data in the synchronizing state is the data in the synchronizing state, and the master main control unit synchronizes the data in the synchronizing state to the service processing unit. 5. The method according to claim 1, wherein after the master master control unit modifies the data in the synchronizing state to data in the synchronizing 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 data that is not in a synchronized state. 6. A data synchronization device, characterized in that, comprising: The first receiving module is used for the active main control unit to receive the application status data sent by the service processing unit, the active main control unit modifies the application status data to unsynchronized state data, and the active main control unit will The unsynchronized state data is synchronized to the business processing unit; The first modification module is used for the active main control unit to modify the unsynchronized state data to the synchronizing state data, and the active main control unit synchronizes the synchronizing state data to the standby main control unit; The first confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit The master control unit modifies the data in the synchronizing state to the data in the synchronized state, and the master master control unit synchronizes the data in the synchronized state to the service processing unit. 7. The device according to claim 6, further comprising: The first switchover module is used for the active main control unit to receive the active-standby switchover event, and send the active-standby switchover event to the service processing unit; The second receiving module is configured to receive, by the active master control unit, a synchronization completion event sent by the service processing unit when the data states in the service processing unit are all in a synchronized state. 8. The device according to claim 6, further comprising: The second switching module is used for the main control unit to receive the main-standby switchover event, and send the main-standby switchover event to the service processing unit; The third receiving module is configured to, when the service processing unit includes the unsynchronized state data or the application state data, the active main control unit receives the synchronizing state data, wherein the synchronizing state The data is modified by the business processing unit from the unsynchronized status data or the application status data; The second modification module is used for the active main control unit to modify the synchronizing state data to unsynchronized state data, and the active main control unit sends the unsynchronized state data to the standby main control unit; The second confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit The master control unit modifies the data in the unsynchronized state to the data in the synchronized state, and the master master control unit synchronizes the data in the synchronized state to the service processing unit. 9. A data synchronization device, characterized in that, comprising: The third modification module is used for the active main control unit to receive the online event of the standby main control unit, the active main control unit modifies the unsynchronized state data to the synchronizing state, and the active main control unit sends the in-progress synchronizing status data to the standby master control unit; The third confirmation module is used for the active main control unit to receive a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit The master control unit modifies the data in the synchronizing state to the data in the synchronized state, and the master master control unit synchronizes the data in the synchronized state to the service processing unit. 10. The device according to claim 9, characterized in that the device comprises: A deletion module, configured for the active main control unit to send a synchronization completion event to the standby main control unit, and the standby main control unit deletes the local data that is not in a synchronized state. 11. A data synchronization system, characterized in that, comprising: a master master control unit, a backup master control unit, and a business processing unit; The active main control unit receives the application state data sent by the service processing unit, the active main control unit modifies the application state data into unsynchronized state data, and the active main control unit modifies the unsynchronized state data. The synchronization state data is synchronized to the business processing unit; The active main control unit modifies the unsynchronized state data to the synchronizing state data, and the active main control unit synchronizes the synchronizing state data to the standby main control unit; The active main control unit receives a confirmation message, the confirmation message includes the confirmation content that the standby main control unit modifies the synchronizing state data to the synchronized state data, and the active main control unit modifies the synchronizing state data. The state data is data in a synchronized state, and the active main control unit synchronizes the data in a synchronized state to the service processing unit.