CN1510845A - Hot backup method for switching primary and secondary protection - Google Patents
Hot backup method for switching primary and secondary protection Download PDFInfo
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- CN1510845A CN1510845A CNA021603332A CN02160333A CN1510845A CN 1510845 A CN1510845 A CN 1510845A CN A021603332 A CNA021603332 A CN A021603332A CN 02160333 A CN02160333 A CN 02160333A CN 1510845 A CN1510845 A CN 1510845A
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Abstract
A protection method with cross primary- backup in communication technology field, after the equipment powers on, the cross primary-backup module (XCP) starts working: the state of the condition and clock determine the cross primary-backup, and command setting up the primary-backup state for all operation card, at the condition of pulling out card, failure and deleting the logic object of cross board, takes turns to the cross board to determine the primary-backup of this operation card, when one of the operation card test the abnormality from the clock or operation, and the normality from another cross board, the operation boards take turns automatically. This invention provides a warm backup method using cross primary-backup automatically and in time when main cross board has failure.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method for carrying out the crossed master/slave protection in a kind of optical transmission device.
Background technology
In optical transmission device; intersection clock veneer (XCS; be called for short cross board) be the core of equipment; main service dispatching and the system's timing function realized; XCS is working properly to be to guarantee the professional normal basis of optical transmission device; the business that the fault of XCS may influence entire equipment even whole network transmits, and therefore, the protection to XCS in optical transmission device has great importance.
If the main-apparatus protection of cross board is not provided, when cross board breaks down, just can only carry out the recovery of equipment by changing veneer, before new cross board operate as normal, appliance services will occur and interrupt and even whole network paralysis.
At present in the optical transmission device, two cross boards of some equipment assembling, but two cross boards do not have master-slave mode, work simultaneously, provide clock and business to different business boards respectively, under business board is selected clock and professional situation on the same cross board, if each business board is active and standby inconsistent, then excessive when the clock skew of two cross boards, when between active and standby inconsistent two business boards business being arranged, just may have influence on professional transmission; And under business board is selected from the clock of different cross boards and professional situation, have the problems referred to above equally.
Though some equipment provides the main-apparatus protection of cross board, do not adopt the Hot Spare mode, promptly when the main crossings plate was in running order, another piece cross board was in stand-by state, and when situations such as the main crossings plate breaks down, standby cross board can not be enabled immediately.Therefore, when the main crossings plate of existing equipment breaks down, need manually cross board to be carried out active and standby switching, business is switched to cross board fully from the main crossings plate, can cause service disconnection, and the business recovery time is longer, therefore, main crossings plate fault is bigger to the influence of business.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency that overcomes existing cross board main-apparatus protection; provide a kind of when the main crossings plate breaks down; can carry out the heat backup method of crossed master/slave protection automatically in time, thereby reduce of the influence of main crossings plate fault business.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
The heat backup method of this crossed master/slave protection may further comprise the steps:
After A, the device power, crossed master/slave protection module (XCP) is determined the crossed master/slave state according to the activestandby state of cross board stream state and clock, and transmitting order to lower levels is provided with the activestandby state of each business board;
B, under the situation of pulling out plate, fault or deleting the logic object of cross board, cross board is carried out masterslave switchover, business board is switched on other normal cross board.
Initiate the crossed master/slave request to crossed master/slave protection module (XCP) when business board goes into operation, if crossed master/slave protection module (XCP) has been determined the crossed master/slave state, then transmitting order to lower levels is provided with the activestandby state of business board; If current also definite crossed master/slave state, then business board is selected the cross board of acquiescence.
When business board went into operation, crossed master/slave protection module (XCP) received the single board main/standby request, has determined at XCP under the situation of main crossings plate; if current is the Forced Switch state; then issue the Forced Switch order to the veneer of initiating request, otherwise, issue the Manual Switch order to the veneer of initiating request.
Described business board go into operation be meant business board go into operation first or change business board, revise the business board configuration, business board goes into operation behind the deletion business board object logic.
When deletion veneer object logic, veneer is carried out a warm reset, make and creating the veneer object logic, when veneer goes into operation once more, can redefine the crossed master/slave state of veneer.
Under the normal situation of equipment, each business board is selected clock and the business from the main crossings plate;
When certain business board detects from the clock of current cross board or professional undesired, and from the clock of another cross board and business just often, business board carries out auto switching.
Before clock active/standby is switched, earlier business is carried out masterslave switchover;
When business is carried out masterslave switchover,, then when another cross board has gone into operation, issue the Manual Switch order to each business board if the cross board of master clock correspondence goes into operation; If another cross board does not go into operation, then issue the Forced Switch order to each business board.
When the generation cross board pulls out plate, fault or deletion object logic, this cross board is set to initial state, if another piece cross board configuration is correct and physics is on the throne, be mainboard then with this cross board, upgrade the crossed master/slave state, issue the Forced Switch order to each business board, otherwise, remove the crossed master/slave state.
When cross board pulls out plate, trigger cross board and pull out the plate interruption, plate message is pulled out in the emergency message formation transmission to crossed master/slave protection module (XCP) in interrupt handling routine, handles by Event triggered in message processing function then;
Fault to cross board is patrolled and examined by timed task; and carry out filtering and survey to prevent flase drop, patrol and examine when makeing mistakes when cross board, cross board is carried out hard reset; by sending emergency message, in message processing function, handle simultaneously by Event triggered to crossed master/slave protection module (XCP).
Described definite crossed master/slave state is meant: when cross board goes into operation, if two cross boards had all reported stream state, then issue to all business boards and remove the Forced Switch order; If the clock of current cross board correspondence is a master clock, then when plate has been gone into operation, issues the Manual Switch order, otherwise issue the Forced Switch order to all business boards to all business boards.
Beneficial effect of the present invention is: the invention provides a kind of method of cross board being carried out the Hot Spare of main-apparatus protection; under the normal situation of equipment; each business board (as wiring board, tributary card) is selected clock and the business from the main crossings plate; pull out at the main crossings plate under the situations such as plate, fault or deleting the logic object of cross board; system can carry out the masterslave switchover of cross board automatically in time; and each business board is switched to fully on the cross board, thereby reduce of the influence of main crossings plate fault to business.
Initiate the crossed master/slave request to crossed master/slave protection module (XCP) when business board goes into operation, if crossed master/slave protection module (XCP) has been determined the crossed master/slave state, then transmitting order to lower levels is provided with the activestandby state of business board; If current also definite crossed master/slave state, then business board is selected the cross board of acquiescence.Like this, guaranteed that each business board just has correct crossed master/slave state when the beginning operate as normal, under situations such as deletion veneer object logic, when veneer goes into operation once more, can redefine the crossed master/slave state of veneer.
When certain business board detects from the clock of current cross board or professional undesired; and just often from the clock of another cross board and business; business board carries out auto switching; thereby; making some cross boards be not easy detected fault can detect in business board one side; and carry out auto switching, realized protection better to this single board service.
Clock and bundling among the present invention, clock active/standby state decision cross board activestandby state before clock active/standby is switched, carries out masterslave switchover to business earlier, can prevent the slave board clock not and mainboard influence business when synchronous, the normal transmission of guaranteed service.
Embodiment
According to embodiment the present invention is described in further detail below:
The heat backup method of crossed master/slave protection is realized by crossed master/slave protection module (XCP) in this optical transmission device of the present invention.In view of the importance of cross board main-apparatus protection, handle by an independent task, and suitably improve the priority of this task, so that can in time handle the crossed master/slave switching that causes owing to reasons such as cross board fault, configuration changes.Simultaneously; crossed master/slave protection module (XCP) communicates by sending message; and be divided into common message and emergency message at different message; to satisfy the needs of different priorities; in order better each business board to be controlled; Forced Switch, auto switching, three kinds of masterslave switchover orders of Manual Switch are provided, and three kinds of command prioritization from high to low.
Forced Switch is that business board is locked onto on the cross board of appointment, if not to the business board release or issue the Forced Switch order again, this business board can not change its activestandby state; Auto switching is at business board, realize by business board that also business board detects clock and the business from cross board, if business board is found the current clock or professional undesired of receiving, and normal from the clock and the business of another piece cross board, business board will oneself carry out masterslave switchover; Manual Switch is all normal at two cross boards, and XCP issues to each business board when determining activestandby state or masterslave switchover.
In addition, the configuration of equipment is divided into physical configuration and logic configuration, and when the two disposes when identical, equipment can operate as normal.
Implementation method of the present invention is as follows:
After A, the device power, crossed master/slave protection module (XCP) is determined the crossed master/slave state according to the activestandby state of cross board stream state and clock, and transmitting order to lower levels is provided with the activestandby state of each business board;
B, under the situation of pulling out plate, fault or deleting the logic object of cross board, cross board is carried out masterslave switchover, business board is switched on other normal cross board.
Wherein, as described in above-mentioned steps A, determine the main crossings plate after the device power earlier, that is:
After the device power, crossed master/slave switching module initialization state, each veneer carries out initialization and goes into operation successively, the definite dependence cross board stream state of main crossings board status and the activestandby state of clock, when the software of equipment brings into operation, all states all still are initial state, therefore, after cross board powers on, calculate the clock active/standby state according to its logic configuration, after cross board went into operation, notice XCP oneself went into operation, XCP determines the crossed master/slave state according to the timely mitriform attitude of cross board state, and transmitting order to lower levels is provided with the activestandby state of each business board.
The cross board processing logic that goes into operation is described below:
The incorrect in logic configuration of IF cross board
RETURN；
ENDIF
The IF cross board had reported stream state
RETURN；
ENDIF
Another piece cross board of IF had reported stream state
Issue the order of removing Forced Switch to all business boards;
ENDIF
The clock of the current cross board correspondence of IF is a master clock
IF goes into operation to plate
Issue the Manual Switch order to all business boards;
ELSE
Issue the Forced Switch order to all business boards;
ENDIF
Record crossed master/slave state;
ENDIF
After device power, run into when pulling out plate, fault or deletion logic configuration when cross board in the course of work, need carry out masterslave switchover to cross board, business board is switched on other normal cross board, carry out as follows:
The major function of XCP is the main-apparatus protection to cross board, is pulled out when the main crossings plate under the situation of plate, fault (contain hard reset, be equivalent to the veneer power down) or deletion object logic, and crossed master/slave can in time switch, to reduce service damage.
Cross board is pulled out plate, pull out plate by the registration cross board and interrupt triggering.When cross board pulls out plate, trigger cross board and pull out the plate interruption, plate message is pulled out in the emergency message formation transmission to XCP in interrupt handling routine, handles by Event triggered in message processing function then.
To the detection of cross board fault, patrol and examine by timed task, comprise chip and bus, and carry out suitable filtering and survey to prevent flase drop.Patrol and examine when makeing mistakes when cross board, cross board is carried out hard reset, simultaneously by sending emergency message, with the aforementioned plate processing mode of pulling out to XCP.
When taking place, if another piece cross board configuration is correct, crossed master/slave in time switches, and makes this cross board become the main crossings plate in above-mentioned plate or the fault of pulling out, and all business boards all switch on this cross board.
Deleting the logic object of cross board is equivalent to not exist in logic this cross board, just can not be to this veneer down distributing configuration data, and therefore this cross board, if another piece cross board is normal, just need carry out crossed master/slave switching with regard to cisco unity malfunction.
More than three kinds of situations closely similar, processing logic is as follows:
Cross board takes place pull out hard reset after plate, the fault, deletion object logic;
This cross board is set to initial state (being equivalent to does not have);
Another piece cross board configuration of IF is correct and physics is on the throne
With this cross board is mainboard, upgrades the crossed master/slave state;
Issue the Forced Switch order to each business board;
ELSE
Remove crossed master/slave state (not determining crossed master/slave);
RETURN；
ENDIF
During operate as normal, some special circumstances may appear in business board after the device power, and will redefine this business board cross board activestandby state this moment, carry out as follows:
In a set of equipment, some veneers have been disposed, each veneer goes into operation its sequencing, each business board may processing command when definite cross board activestandby state, just may cause XCP to be dropped in the veneer side to the order that the crossed master/slave state is set that veneer issues, simultaneously, replacing business board, modification configuration all need according to current activestandby state the crossed master/slave state of business board to be set, otherwise, might cause the inconsistent of each business board activestandby state.
In order to guarantee that each business board just has correct crossed master/slave state when beginning operate as normal, when business board goes into operation, just initiate the crossed master/slave request, if XCP has determined the crossed master/slave state to XCP, then issue corresponding order, the activestandby state of each business board is set to this business board; If current also definite crossed master/slave state, then business board is selected the cross board of acquiescence.In addition, cause the state of XCP inconsistent, when deletion veneer object logic in order to prevent that the logic configuration state from changing, veneer is carried out a warm reset, so that creating the veneer object logic, when veneer goes into operation once more, can redefine the crossed master/slave state of veneer.
The processing logic that activestandby state was determined when business board went into operation is described below:
In the veneer side:
The veneer request goes into operation;
IF veneer logic configuration is correct
Veneer goes into operation;
Veneer is initiated active and standby request to XCP
ELSE
Select the acquiescence activestandby state;
ENDIF
In the XCP side:
Receive the single board main/standby request;
IF XCP has determined the main crossings plate
IF is current to be the Forced Switch state
Issue the Forced Switch order to the veneer of initiating request;
ELSE
Issue the Manual Switch order to the veneer of initiating request;
ENDIF
ELSE
RETURN；
ENDIF
In the optical transmission device course of work, owing to may causing the clock active/standby of two cross boards, some reasons switch sometimes, and clock is very big to service impact, therefore clock protection is very important.In physical device, master/backup clock should be synchronous, the clock of slave board lock mainboard, because switch in the clock source, reasons such as configuration change may cause that the clock active/standby of two cross boards is switched, at this moment, if master/backup clock is when carrying out active and standby switching, clock interlocking in time so, can not switched business in the system, but, if in the clock active/standby handoff procedure time of interlocking long, will cause service damage, at this moment, can be before clock active/standby be switched, earlier business is carried out masterslave switchover, thereby reduce the influence to business, this method can be accepted or rejected according to actual conditions.
Divide clock module and XCP resume module, logic is as follows:
Clock module:
Calculate the master clock plate according to configuration;
The IF clock active/standby need be switched
Notice XCP carries out crossed master/slave switching;
Carrying out clock active/standby switches;
ENDIF
The XCP module:
The recording clock activestandby state;
The cross board of IF master clock correspondence goes into operation
Another cross board of IF goes into operation
Issue the Manual Switch order to each business board;
ELSE
Issue the Forced Switch order to each business board;
ENDIF
Reset the crossed master/slave state;
ENDIF
In order better business to be protected, the protection the present invention who carries out in the business board side realizes by the auto switching of veneer.For cross board, some fault is not easy to detect, whether the business from the cross board to the business board normally detects at business board, in the equipment that the dual crossing plate is provided, two cross boards provide business and clock to business board simultaneously, business board is selected the clock and business from a certain cross board, and under the normal condition, each business board is selected clock and the business from the cross board of master clock correspondence.When certain business board detects from the clock of cross board or professional undesired, and when being normal from the clock of another cross board and business, business board just carries out auto switching, thereby the business of this veneer is protected, and this function realizes in the veneer side.
Processing logic is as follows:
The IF business board detects present clock or professional bad
IF is current not to be the Forced Switch state
IF is good from the clock and the business of another piece cross board
The business board auto switching is to another piece cross board;
ENDIF
ENDIF
ENDIF
Like this, the present invention has realized the Hot Spare of crossed master/slave protection, has reduced the influence of main crossings plate fault to business.
Claims (10)
1. the heat backup method of crossed master/slave protection may further comprise the steps:
After A, the device power, crossed master/slave protection module (XCP) is determined the crossed master/slave state according to the activestandby state of cross board stream state and clock, and transmitting order to lower levels is provided with the activestandby state of each business board;
B, under the situation of pulling out plate, fault or deleting the logic object of cross board, cross board is carried out masterslave switchover, business board is switched on other normal cross board.
2. the heat backup method of crossed master/slave protection according to claim 1 is characterized in that, also comprises:
Initiate the crossed master/slave request to crossed master/slave protection module (XCP) when business board goes into operation, if crossed master/slave protection module (XCP) has been determined the crossed master/slave state, then transmitting order to lower levels is provided with the activestandby state of business board; If current also definite crossed master/slave state, then business board is selected the cross board of acquiescence.
3. the heat backup method of crossed master/slave protection according to claim 2; it is characterized in that: when business board goes into operation; crossed master/slave protection module (XCP) receives the single board main/standby request; determined at XCP under the situation of main crossings plate; if current is the Forced Switch state; then issue the Forced Switch order to the veneer of initiating request, otherwise, issue the Manual Switch order to the veneer of initiating request.
4. according to the heat backup method of claim 2 or the protection of 3 described crossed master/slaves, it is characterized in that: described business board goes into operation and is meant that business board goes into operation first or changes business board, revises the business board configuration, deletes going into operation of business board behind the business board object logic.
5. the heat backup method of crossed master/slave protection according to claim 4; it is characterized in that: when deletion veneer object logic, veneer is carried out a warm reset, make and creating the veneer object logic; when veneer goes into operation once more, can redefine the crossed master/slave state of veneer.
6. according to the heat backup method of claim 1,2 or 3 described crossed master/slave protections, it is characterized in that, also comprise:
Under the normal situation of equipment, each business board is selected clock and the business from the main crossings plate;
When certain business board detects from the clock of current cross board or professional undesired, and from the clock of another cross board and business just often, business board carries out auto switching.
7. according to the heat backup method of claim 1,2 or 3 described crossed master/slave protections, it is characterized in that, also comprise:
Before clock active/standby is switched, earlier business is carried out masterslave switchover;
When business is carried out masterslave switchover,, then when another cross board has gone into operation, issue the Manual Switch order to each business board if the cross board of master clock correspondence goes into operation; If another cross board does not go into operation, then issue the Forced Switch order to each business board.
8. according to the heat backup method of claim 1, the protection of 2 or 3 described crossed master/slaves; it is characterized in that: when the generation cross board pulls out plate, fault or deletion object logic; this cross board is set to initial state; if another piece cross board configuration is correct and physics is on the throne; be mainboard then, upgrade the crossed master/slave state, issue the Forced Switch order to each business board with this cross board; otherwise, remove the crossed master/slave state.
9. the heat backup method of crossed master/slave protection according to claim 8 is characterized in that:
When cross board pulls out plate, trigger cross board and pull out the plate interruption, plate message is pulled out in the emergency message formation transmission to crossed master/slave protection module (XCP) in interrupt handling routine, handles by Event triggered in message processing function then;
Fault to cross board is patrolled and examined by timed task; and carry out filtering and survey to prevent flase drop, patrol and examine when makeing mistakes when cross board, cross board is carried out hard reset; by sending emergency message, in message processing function, handle simultaneously by Event triggered to crossed master/slave protection module (XCP).
10. according to the heat backup method of claim 1,2 or 3 described crossed master/slave protections, it is characterized in that:
Described definite crossed master/slave state is meant: when cross board goes into operation, if two cross boards had all reported stream state, then issue to all business boards and remove the Forced Switch order; If the clock of current cross board correspondence is a master clock, then when plate has been gone into operation, issues the Manual Switch order, otherwise issue the Forced Switch order to all business boards to all business boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021603332A CN100341255C (en) | 2002-12-26 | 2002-12-26 | Hot backup method for switching primary and secondary protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021603332A CN100341255C (en) | 2002-12-26 | 2002-12-26 | Hot backup method for switching primary and secondary protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1510845A true CN1510845A (en) | 2004-07-07 |
| CN100341255C CN100341255C (en) | 2007-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021603332A Expired - Fee Related CN100341255C (en) | 2002-12-26 | 2002-12-26 | Hot backup method for switching primary and secondary protection |
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| CN100370701C (en) * | 2004-07-23 | 2008-02-20 | 华为技术有限公司 | Main standby switch control circuit and control method thereof |
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| US5453737A (en) * | 1993-10-08 | 1995-09-26 | Adc Telecommunications, Inc. | Control and communications apparatus |
| CN1109416C (en) * | 2000-04-25 | 2003-05-21 | 华为技术有限公司 | Method and equipment for swapping active with standby switches |
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| CN100370701C (en) * | 2004-07-23 | 2008-02-20 | 华为技术有限公司 | Main standby switch control circuit and control method thereof |
| CN100394704C (en) * | 2004-12-13 | 2008-06-11 | 上海贝尔阿尔卡特股份有限公司 | Redundancy backup control system and interface board power supply controlling method |
| CN100431307C (en) * | 2005-10-17 | 2008-11-05 | 中兴通讯股份有限公司 | A method to realize the master-standby switching of optical channel of kilomega service in communication system and its system |
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| CN102118309A (en) * | 2010-12-31 | 2011-07-06 | 中国科学院计算技术研究所 | Method and system for double-machine hot backup |
| CN102123046A (en) * | 2011-01-21 | 2011-07-13 | 烽火通信科技股份有限公司 | Packet transport network (PTN) device and method for realizing time synchronization protection switching (PS) by using main cross disk and spare cross disk of PTN device |
| CN102123046B (en) * | 2011-01-21 | 2013-09-04 | 烽火通信科技股份有限公司 | Packet transport network (PTN) device and method for realizing time synchronization protection switching (PS) by using main cross disk and spare cross disk of PTN device |
| CN105656711A (en) * | 2014-12-02 | 2016-06-08 | 中兴通讯股份有限公司 | Signal detecting method and device |
| CN111800188A (en) * | 2019-04-09 | 2020-10-20 | 烽火通信科技股份有限公司 | Switching method and system of optical communication service |
| CN111800188B (en) * | 2019-04-09 | 2021-09-07 | 烽火通信科技股份有限公司 | Switching method and system of optical communication service |
| CN113285779A (en) * | 2020-02-20 | 2021-08-20 | 华为技术有限公司 | Communication equipment and clock synchronization method |
| WO2021164541A1 (en) * | 2020-02-20 | 2021-08-26 | 华为技术有限公司 | Communication device and clock synchronization method |
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