CN101179366B - Method of synchronizing master/slave data of digital subscriber line access multiplexer - Google Patents
Method of synchronizing master/slave data of digital subscriber line access multiplexer Download PDFInfo
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- CN101179366B CN101179366B CN2006101382189A CN200610138218A CN101179366B CN 101179366 B CN101179366 B CN 101179366B CN 2006101382189 A CN2006101382189 A CN 2006101382189A CN 200610138218 A CN200610138218 A CN 200610138218A CN 101179366 B CN101179366 B CN 101179366B
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Abstract
The invention discloses a digital subscriber line access multiplexer main and standby data synchronization method. After the spare control board is started, integrated data request is sent to the major control board regularly. After the major control board receives the request, the semaphore is started to guarantee the synchronization of integrated data to be relatively stable. Current operation data are obtained, and then sent to the spare control board after being integrated. When the spare control board receives the integrated data, the request timer is turned off and sending request is stopped. Operation data loading and collocation are then carried out to the board. When the data loading and collocation are finished, the major control board is informed of the ending of the collocation. When the major control board receives the information, the semaphore is then released and the main and standby control board will enter the state of data synchronization, thereby keeping up dynamic data synchronization between the main and standby control boards. The data synchronization method of the invention can realize accurate and reliable integrated data synchronization and dynamic data synchronization between the main and standby control boards through the classified transmission data.
Description
Technical field
The present invention relates to have the digital subscriber line access multiplex of active and standby dual control board, relate in particular to the method for data sync between the active and standby control board on the digital subscriber line access multiplex.
Background technology
XDSL (digital subscriber line, Digital Subscriber Line) user is the speed development to be doubled every year in recent years, in broadband access, DSLAM (digital subscriber line access multiplex, Digital Subscriber Line Access Multiplexer) access accounts for very big share, DSLAM inserts medium-and-large-sized equipment and uses very extensively, and number of users all is hundreds and thousands of in these DSLAM equipment usually, and the reliability to system proposes higher requirement like this.Adopt in this case and active and standbyly carry out system's control backup, can improve overall performance and fault-resistant ability that DSLAM inserts with dual control board.
Under active and standby dual master control pattern, for network management, active and standby control board is to be present in the network as an independent network element respectively.So, the user carries out the content of network configuration, requires to be issued to simultaneously main with on control unit and the standby control unit.After guaranteeing the active and standby switching of fault, the configuration status unanimity of active and standby control board operation reaches the service operation unanimity.
Between active and standby control board, there is communication channel to use usually for active and standby communication.Configuration data between the active and standby control board utilizes this communication channel to be synchronized to standby control board main with the control board configuration data synchronously.Therefore, a kind of synchronous protocol of needs guarantees the reliable synchronization of active and standby control board configuration data, guarantees the carrying out safety backup of data on standby control board of master board by this data sync agreement.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of digital subscriber line access multiplex master/slave data synchronous method, realizes reliably data sync timely between the active and standby control board on the digital subscriber line access multiplex.
The invention provides the synchronous method of a kind of digital subscriber line access multiplex master/slave data, realize data sync between described multiplexer main is with control board and standby control board, described method comprises the steps:
(1) regularly send data request information to main with control board after standby control board starts, it is synchronous that master/slave data is carried out in request;
(2) main with after the normal startup of control board, set one and receive the request of data state, this state is initialized as Disable, and expression does not receive standby control board request, be changed to Enable main finishing with the control board initialization also after the stable operation, expression can be handled the request of data of standby control board;
When allowing to receive request of data, after the master received described data request information with control board, open configuration waited timer, utilizes a semaphore to block current network management configuration;
Main obtain all configuration datas of current system, and it is encapsulated as integrated data message sends to standby control board, in timer is wanted seeking time, forbid carrying out data integration subsequently with control board;
(3) after standby control board receives described integrated data message, stop paying out data request information, according to from integrated data, disassembling the configuration data that obtains, standby control board is carried out load configurations, after configuration is finished, send the integrated configuration main control board of using of receiveing the response;
(4) after the master receives that with control board integrated configuration is receiveed the response, again allow network management configuration, it is synchronous to allow to carry out dynamic data, when configuration and running status change, give standby control board synchronously with the dynamic data that changes, forbid network management configuration between sync period;
(5) standby control board is according to the dynamic data of receiving, to the configuration of reloading of the data of this control board.
Further, described step (1) comprising:
After standby control board normal initialization finished, log-on data request timer regularly sent data request information to main with control board.
Further, described step (3) comprising:
Standby control board is received main with control board integrated data message, stops to send the configuration data request message;
Disassemble the main data of using in the control board integrated data message, and standby control board is carried out load configurations, regularly send the integrated configuration of standby control board in the layoutprocedure and carry out message to the main control board of using according to configuration data wherein;
After configuration finishes, send the integrated configuration of the standby control board main control board of using of receiveing the response.
Further, described step (4) comprising:
Main receive that with control board message is carried out in the integrated configuration of standby control board after, refresh configuration is again waited the timing of timer, continue to wait;
Main receive that with control board the integrated configuration of standby control board is receiveed the response after, discharge the semaphore that blocks current network management configuration, close configuration and wait timer, it is synchronous to allow to carry out dynamic data;
In configuration with running status changes, carry out dynamic data when synchronous, open configuration waits timer, and the use semaphore blocks current network management configuration, packs the data to message, sends to standby control board.
Further, described step (5) comprising:
After standby control board receives dynamic data, this control board is reloaded and disposed, concurrent delivery is put and is receiveed the response to the main control board of using;
Main with control board receive receive the response after, release semaphore stops timer, prepares next bar configuration synchronization.
Further, standby control board is periodically to send data request information in the described step (1);
Further, semaphore is used for protection and work as preamble, blocks the modification of configuration parameter being carried out when synchronous, and this semaphore initial condition is set to idle condition Full, represents that semaphore is not used, and seizure condition is Empty;
Configuration in the described step (2) waits timer and is used for limiting a data synchronizing process, in a synchronizing process, has only a synchrodata handling.
Further, dynamic data comprises dynamic configuration data and dynamic service data described in the described step (4), wherein,
Described dynamic configuration data, utilize the MIB sniffer of management information bank MIB interface setting to be configured the data intercepting and capturing, it is screened analysis, when confirming that needs are synchronous, open configuration waits timer, uses semaphore to block current network management configuration, packs the data to message, send to standby control board;
Described dynamic service data, with the module is unit, the corresponding synchronous meter that comprises the synchronous state information of these module needs of each module, when the synchrodata table changes, these data will send to standby control board, standby control board will be realized state synchronization with main tables of data with the covering of the state table on control board respective modules.
Further, described configuration waits the timing value of timer, adds the largest data transfer time greater than the maximum amount of data processing time, and wherein, the timing value that is used for integrated data in the step (2) is greater than the timing value that is used for dynamic data.
Use method of data synchronization of the present invention, between the active and standby control board of digital subscriber line access multiplex, carry out the synchronous of the big intensive data of data volume when at first starting, afterwards, to main variation with configuration on the control board and service condition, it is synchronous to carry out dynamic data.By classification transmission data, can realize the data sync between active and standby accurately, reliably.
Description of drawings
Fig. 1 is active and standby with the synchronous flow chart of integrated data between the control board in the embodiment of the invention;
Fig. 2 is an active and standby flow chart with the synchronous concrete implementation of integrated data between the control board in the embodiment of the invention.
Embodiment
Active and standby scheme is the common scheme of big capacity communication apparatus, how to guarantee active and standby switching after, standby control board can be taken over the main control board work of using smoothly, data configuration in time be one of them key component synchronously.The present invention be before the active and standby switching the active and standby Synchronization Design of configuration the reliable feasible inside synchronous protocol of one cover.From the safety of data transmit, the synchronous fault recovery tight strick precaution of all contrasting to data.
In main standby synchronous method of the present invention, will need data in synchronization to be divided into two big classes between the active and standby usefulness: the first kind be integrated configuration data, has comprised current main with all data of moving in the control board in the integrated data; Second class is a dynamic data, comprises dynamic network management configuration and status data.Because integrated data comprises all configuration data items, its data volume is very big; And dynamic data is unidirectional configuration, and to being configured fully, it is less to comprise data volume, is mainly dynamic configuration data by main.
In the method for the present invention, the process of data sync is divided into integrated data synchronously and synchronous two stages of dynamic data according to the difference of deal with data.Before integrated data did not finish synchronously, dynamic data was forbidden synchronously, when needing to carry out the user interactions configuration in the integrated data synchronizing process, as network management configuration, to get clogged, and wait for and do not allow to be configured operation, after integrated data is with EOS, carry out corresponding configuration again.
As shown in Figure 1, method for synchronous of the present invention mainly comprises following step:
Step 101: regularly send data request information to main with control board after standby control board starts, it is synchronous that master/slave data is carried out in request;
Step 102: main start with control board is normal after, when receiving described data request information, obtain all configuration datas of current system, and it is encapsulated as integrated data message sends to standby control board, forbid network management configuration between sync period;
Step 103: after standby control board receives described integrated data message, stop paying out data request information,, standby control board is carried out load configurations according to from integrated data, disassembling the configuration data that obtains, after configuration is finished, send the integrated configuration main control board of using of receiveing the response;
Step 104: after the master receives that with control board integrated configuration is receiveed the response, again allow network management configuration, it is synchronous to allow to carry out dynamic data, when configuration and running status change, give standby control board synchronously with the dynamic data that changes, forbid network management configuration between sync period;
Step 105: standby control board is according to the dynamic data of receiving, to the configuration of reloading of the data of this control board.
The integrated data synchronous protocol is opened by standby control board, after standby control board starts, inquire oneself and be standby control board, give the main control board of using with the request of timed sending integrated data, after the master receives this request with control board, the enabling signal amount is guaranteed synchronous relatively stable of integrated data, and obtain current service data, carry out sending to standby control board after integrated.After standby control board is received integrated data, the turn-off request timer, stop to send request, and this plate is carried out service data load and dispose, after finishing, give main with sending the notice that configuration finishes, after the master uses control board notified, with release semaphore, the active and standby dynamic data synchronous regime that enters, active and standby dynamic data is synchronous with keeping.
Fig. 2 has shown that primary, spare control board among the present invention is configured the idiographic flow of integrated data when synchronous, mainly comprises the steps:
Step 1, standby control board log-on data request timer, this timer is a cycle timer, regularly sends the integrated data request message to main with control board.
Step 2, main receive data request information, if when receiving the request of data state and being Disable, this request of data will be abandoned with control board.
Receive the request of data state be used for sign main with control board whether initialization finish, and stable operation, this state is initialized as Disable, being changed to Enable main finishing with the control board initialization also after the stable operation.
Step 3, when receiving the request of data state and be Enable, after receiving the integrated data request message that standby control board sends, will carry out following step with control board when main:
(3-1) judge that configuration waits timer and whether starts,, will abandon this standby control board integrated data request if be enabled in usefulness.
Configuration waits timer and is initialized as dead status, carry out starting before the integrated data group bag with control board main, the setting of this timer is in order to demarcate once the intactly synchronous time limit, can prevent simultaneously the repeatedly group bag and the transmission of integrated data effectively, improve the operational efficiency and the reliability of system.This timer time is greater than the group bag and the delivery time of maximum service data.
If (3-2) configuration waits timer and is not activated, and after receiving the integrated data request, will start this timer, and enable data transmission semaphore, obtain all service datas of system then, and they are packaged into integrated data message, send to standby control board.
Data send semaphore and are used for protecting current data environment, and the semaphore initial condition is full, i.e. idle condition.Starting the back is Empty, i.e. seizure condition.The once complete synchronizing process of this semaphore control is blocked next synchronizing process.This semaphore makes at every turn synchronously all being controlled at active and standby grade and carries out in stopping synchronously.
Step 4, when standby control board receives the main integrated data that sends with control board, will carry out following step:
(4-1) close the request of data timer, standby like this control board stops to send the integrated data request message.
(4-2) send a standby control board " message is carried out in integrated setting " and give and mainly use control board, and start standby control board integrated data the detection timer is set.
Because integrated data is huger, the integrated data that common standby control board loads and configuration is received needs the more time, and whether this timer is used for detecting standby control board integrated data and loads and finish.And synchronous state and result informed the main control board of using accurately.
(4-3) disassemble integrated data, standby control board is carried out data load and dispose, standby control board is operated in the identical data environment with control board with main.
(4-4), arrives integrated data when being provided with the detection timer time, whether setting completed to check standby control board, if do not have, sends an integrated setting of standby control board and carry out message to the main control board of using, continue to wait the next time interval of timer then, setting completed up to standby control board.
(4-5) integrated data is closed integrated data the detection timer is set after configuration on the standby control board finishes, and standby control board sends " integrated configuration is receiveed the response " to the main control board of using.
After step 5, master receive that with control board message is carried out in the integrated setting of standby control board, dispose the value that waits timer, continue to wait for a complete timer time interval resetting.
Waiting length of timer is a dynamic regulated variable in the synchronous process of integrated data, in actual environment, different configurations, the loading time of integrated data on standby control board can be different, and the integrated data configuration of standby control board is carried out message and can be waited timer adjustment to configuration according to the loading condition of standby control board.
After step 6, master receive standby control board " integrated configuration is receiveed the response " with control board, will stop configuration and wait timer, and discharge data and send semaphore.The same EOS of integrated data, it is synchronous to start dynamic data.
When step 7, master wait timer expiry with the control board configuration, discharge data and send semaphore, this timer of stopping using.Carrying out integrated data does not then have the response record, up to receiving the request of standby control board integrated data once more, removes this nothing and responds record.
Dynamic data can be divided into dynamic configuration data and dynamic state data again, and the synchronous triggering condition of these two kinds of dynamic datas is different.
For dynamic configuration data, the present invention is in main MIB (management information bank with control board, Management Information Base) created a configuration data on the interface sniffer has been set, this sniffer is tackled the configuration mib object, and screening is analyzed, judge whether it is to need synchronous configuration data, if need then to pack synchronously to send to standby control board.Standby control board is disassembled bag with data and also is provided with by the MIB interface after receiving these data.
For the dynamic service status data, be unit with the module, the corresponding synchronous meter of each module comprises the synchronous state information of these module needs in this table.Business module is being preserved current synchronous contents in table before the state processing each time, state processing finishes, the relatively variation of the synchrodata table before and after the operation, when the synchrodata table changes, these data will send to standby control board, standby control board will be realized state synchronization with main tables of data with the covering of the state table on control board respective modules.
The reliability requirement of dynamic configuration data is than service data height, and the failure that configuration data is synchronous may directly influence the professional unobstructed situation of DSLAM.Service data synchronously, influence masterslave switchover after, standby control board is taken over the stabilization time of leading with control board work.In the present invention dynamic configuration data is adopted the control method the same with integrated data, use to wait to stop paying out synchronously and send.Adopting asynchronous non-grade to stop paying out to service data send.Each bar configuration data will wait for that to carry out next bar configuration data after the response of standby control board more synchronous.Service data is not then waited for standby control board response after transmission.
When dynamic-configuration was synchronous, if synchronization failure or overtime, the master will be to the line item that is configured into of synchronization failure with control board.The present invention will adopt the manmachine command mode to recover at synchronization failure, and the mode of recovery has all data sync and individual event configuration synchronization.
The concrete synchronizing step of dynamic configuration data is as follows:
Step 1, master detect data configuration with control board MIB sniffer, intercept and capture mib object.
(1-1) mib object to interception screens, and whether see needs this configuration data synchronously, if be not, sniffer is abandoned this MIB data, disregards.
If (1-2) Shai Xuan mib object is to need synchronous configuration data, open configuration waits timer, and log-on data sends semaphore.
(1-3) the dynamic-configuration packing is sent to standby control board.
Step 2, standby control board are received dynamic configuration data, unpack, and are set to correlation module from the MIB interface, and sending it back should be to the main control board of using.
Step 3, master discharge data and send semaphore after receiving that with control board dynamic configuration data is responded, and disable configuration waits timer.
Wait timer expiry if step 4 is main with the control board configuration, then discharge data and send semaphore, disable configuration waits timer.Carry out the dynamic-configuration exception record, the related content of recording configuration.
Claims (8)
1. method that the digital subscriber line access multiplex master/slave data is synchronous realizes data sync between described multiplexer main is with control board and standby control board, it is characterized in that described method comprises the steps:
(1) regularly send data request information to main with control board after standby control board starts, it is synchronous that master/slave data is carried out in request;
(2) main with after the normal startup of control board, set one and receive the request of data state, this state is initialized as Disable, and expression does not receive standby control board request, be changed to Enable main finishing with the control board initialization also after the stable operation, expression can be handled the request of data of standby control board;
When allowing to receive request of data, after the master received described data request information with control board, open configuration waited timer, utilizes a semaphore to block current network management configuration;
Main obtain all configuration datas of current system, and it is encapsulated as integrated data message sends to standby control board, in timer is wanted seeking time, forbid carrying out data integration subsequently with control board;
(3) after standby control board receives described integrated data message, stop paying out data request information, according to from integrated data, disassembling the configuration data that obtains, standby control board is carried out load configurations, regularly send the integrated configuration of standby control board in the layoutprocedure and carry out message to the main control board of using; After configuration is finished, send the integrated configuration main control board of using of receiveing the response;
(4) after the master receives that with control board integrated configuration is receiveed the response, again allow network management configuration, it is synchronous to allow to carry out dynamic data, when configuration and running status change, give standby control board synchronously with the dynamic data that changes, forbid network management configuration between sync period;
(5) standby control board is according to the dynamic data of receiving, to the configuration of reloading of the data of this control board.
2. the method for claim 1 is characterized in that, described step (1) comprising:
After standby control board normal initialization finished, log-on data request timer regularly sent data request information to main with control board.
3. the method for claim 1 is characterized in that, described step (4) comprising:
Main receive that with control board message is carried out in the integrated configuration of standby control board after, refresh configuration is again waited the timing of timer, continue to wait;
Main receive that with control board the integrated configuration of standby control board is receiveed the response after, discharge the semaphore that blocks current network management configuration, close configuration and wait timer, it is synchronous to allow to carry out dynamic data;
In configuration with running status changes, carry out dynamic data when synchronous, open configuration waits timer, and the use semaphore blocks current network management configuration, packs the data to message, sends to standby control board.
4. method as claimed in claim 3 is characterized in that, described step (5) comprising:
After standby control board receives dynamic data, this control board is reloaded and disposed, concurrent delivery is put and is receiveed the response to the main control board of using;
Main with control board receive receive the response after, release semaphore stops timer, prepares next bar configuration synchronization.
5. the method for claim 1 is characterized in that, standby control board is periodically to send data request information in the described step (1).
6. the method for claim 1 is characterized in that, the semaphore in the described step (2) is used for protection and works as preamble, block the modification of configuration parameter being carried out when synchronous, this semaphore initial condition is set to idle condition Full, and the expression semaphore is not used, and seizure condition is Empty;
Configuration in the described step (2) waits timer and is used for limiting a data synchronizing process, in a synchronizing process, has only a synchrodata handling.
7. the method for claim 1 is characterized in that, dynamic data comprises dynamic configuration data and dynamic service data described in the described step (4), wherein,
Described dynamic configuration data, utilize the MIB sniffer of management information bank MIB interface setting to be configured the data intercepting and capturing, it is screened analysis, when confirming that needs are synchronous, open configuration waits timer, use semaphore to block current network management configuration, pack the data to message, send to standby control board;
Described dynamic service data, with the module is unit, the corresponding synchronous meter that comprises the synchronous state information of these module needs of each module, when the synchrodata table changes, these data will send to standby control board, standby control board will be realized state synchronization with main tables of data with the covering of the state table on control board respective modules.
8. as claim 1 or 3 described methods, it is characterized in that described configuration waits the timing value of timer, add the largest data transfer time greater than the maximum amount of data processing time.
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| EP2485438B1 (en) * | 2009-09-28 | 2014-09-03 | Huawei Technologies Co., Ltd. | Protection method for subscriber access network and equipment thereof |
| CN101902360A (en) * | 2010-07-28 | 2010-12-01 | 中兴通讯股份有限公司 | Method for synchronizing information between master equipment and standby equipment and server |
| CN103279111B (en) * | 2013-06-09 | 2016-03-30 | 杭州和利时自动化有限公司 | The synchronous manner of execution of multi-control device, subsystem and system |
| CN106878060A (en) * | 2017-01-12 | 2017-06-20 | 烽火通信科技股份有限公司 | The active and standby synchronization system and method for a kind of multi-service integrated access device |
| CN110913001A (en) * | 2019-11-27 | 2020-03-24 | 杭州迪普科技股份有限公司 | Method, device and equipment for synchronizing dual-computer configuration |
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| CN1458747A (en) * | 2002-05-13 | 2003-11-26 | 华为技术有限公司 | Method for main control board data thermal backup |
| CN1852144A (en) * | 2005-09-06 | 2006-10-25 | 华为技术有限公司 | Main/standby board back-up in access-in apparatus and rearranging method therefor |
| CN1851657A (en) * | 2005-07-21 | 2006-10-25 | 上海华为技术有限公司 | Dual-machine back-up realizing method and system |
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| CN1458747A (en) * | 2002-05-13 | 2003-11-26 | 华为技术有限公司 | Method for main control board data thermal backup |
| CN1851657A (en) * | 2005-07-21 | 2006-10-25 | 上海华为技术有限公司 | Dual-machine back-up realizing method and system |
| CN1852144A (en) * | 2005-09-06 | 2006-10-25 | 华为技术有限公司 | Main/standby board back-up in access-in apparatus and rearranging method therefor |
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