CN1306777C - Method for realizing seamless changing of master and spare service module - Google Patents
Method for realizing seamless changing of master and spare service module Download PDFInfo
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Abstract
The present invention relates to a method for realizing the seamless switch of a main business module and a spare business module. The main business module and the spare business module are respectively provided with two addresses, namely operating and maintaining IP addresses which are respectively independent and business IP addresses which are identical, wherein the operating and maintaining IP addresses are used for exclusively identifying the module and can carry out operating and maintaining data interaction with a management module, and the business IP addresses are used for carrying out business data interaction with other business modules. When the main business module and the spare business module are switched, the management module can simultaneously revise the mapping relation of the IP address of a lower level business module and a data link sign and the mapping relation of the data link sign and a physical terminal port to continuously execute the management function of operation and maintenance to the main business module and the spare business module. The seamless switch of the business functions of the main business module and the spare business module is realized. In the method, the management module can continuously execute the management function to the main module and the spare module before and after the switch of the main business module and the spare business module. During the switching process, a business channel and an operating and maintaining channel do not need to be disassembled and reassembled. The switching process is simple, convenient, stable and reliable, and the seamless switch can be really realized.
Description
Technical field
The present invention relates to the implementation method of the seamless changing of master and spare service module in a kind of communication equipment, belong to the active and standby control technology field of switching with module.
Background technology
Referring to Fig. 1, in many communication equipments, the module that often has some to bear communication service, its job requirement high reliability must guarantee to run without interruption.For this reason, at least two modules that can bear same communication service function can be set usually form the active and standby framework of two-shipper, to guarantee the normal operation of communication service.For example business module A shown in the figure and business module B are exactly two active and standby each other communication service modules.At any one constantly, have module in running order and bear the communication service function among modules A and the module B all the time, another module then is in stand-by state.Business module C then is another business module that service data interaction takes place with business module A/B, at any one constantly, business module C only with business module A/B among a module generation service data interaction.Administration module D is the upper management module of business module A, B, C, carries out control and management function to business module A, B, C.Business module A, B, the C OM channel by separately and administration module D respectively carry out the mutual of operation maintenance data; Business module A or B carry out the mutual of business datum by its service channel and business module C respectively, and the mutual of this business datum also will be realized by the function of exchange of the data link layer on the administration module D.In the prior art; if when initial condition; business module A is the in running order main module of using; business module B is a stand-by state; so; this business module B can be in unactivated state usually, the OM channel between it and the administration module D and and business module C between service channel all be to be in off-state.In case when the masterslave switchover incident took place, administration module D at first disconnected the OM channel with business module A, and remove the service channel between business module A and the business module C; Administration module D sets up respectively and the OM channel of business module B and the service channel between business module B and the business module C then.At this moment just finish masterslave switchover, business module B is upgraded to the main module of using.Because above-mentioned whole masterslave switchover process need successively disconnects between four modules and sets up two service channels and two OM channels, operation sequence is many, length consuming time, can not realize seamless switching, and, break down easily, can exert an influence and lose communication service unavoidably.
Summary of the invention
In view of this, the implementation method that the purpose of this invention is to provide a kind of seamless changing of master and spare service module, use this method, switch front and back active and standby with business module, administration module can be controlled this active and standby two business modules respectively by two separate OM channels, continues these two business modules of management (if the Operation and Maintenance function of business module is still talked about normally).In addition, because business function shifts behind the masterslave switchover, be that business function is born by new working traffic module, service channel also shifts thereupon, method of the present invention can guarantee to keep normally active and standby the connection with the business of other business module with business module, guarantee to have only a join dependency business module all the time in active and standby at any time two business modules, do not influence the business function that active and standby business module is born.
The object of the present invention is achieved like this: a kind of implementation method of seamless changing of master and spare service module, it is characterized in that: this method is provided with two addresses respectively to active and standby business module: one of them is independent separately, be used for this module of unique identification and carry out the mutual Operation and Maintenance IP address of operation maintenance data with administration module, and another is both service IP address identical, that be used for carrying out with other business module service data interaction; When masterslave switchover takes place, revise the IP address of subordinate's business module and the mapping relations of data link mark simultaneously by administration module, and the mapping relations of data link mark and physical port, so that the uninterrupted management function that active and standby business module executable operations is safeguarded, and realize the seamless switching of active and standby business module business function; Described method comprises the following steps:
(1) the initialization setting is carried out in the IP address of business module and administration module and physical port address and related data link;
(2) on administration module, set up the mapping table of mapping table, data link layer label switched table and the data link mark and the physical port of the purpose IP address of subordinate's business module and data link mark respectively;
(3) monitor active and standby business module when switching when administration module, revise the IP address on two active and standby business module Operation and Maintenance planes and the mapping relations of data link mark simultaneously, and the mapping relations of data link mark and active and standby business module physical port, make administration module correctly carry out oam, and make business datum correctly be sent to current mainboard active and standby business module.
Described method is applicable to that data link layer adopts point-to-point communication mode, transport layer/network layer to adopt the communication equipment of UDP/IP protocol interconnection between the disparate modules.
Described step (1) further comprises the following steps:
(11) initialization is provided with the IP address on the Operation and Maintenance plane of active and standby business module and relative business module, the IP address and the physical port address of service plane respectively, and its operation maintenance data link of relative set and business datum link;
(12) initialization is provided with the IP address on the Operation and Maintenance plane of administration module, and its operation maintenance data link of relative set.
Described step (3) also comprises the following steps: the setting according to data link layer label switched table, to come from arbitrarily to go into end the source business module, with the packet exchange of data link mark sign to the purpose business module that goes out to hold arbitrarily, revise the data link mark of this packet simultaneously.
Described step (3) comprises the following steps: further after the conversion of mapping relations is finished in each modification whether this mapping conversion of systems inspection is successful, if success, the execution subsequent operation; Otherwise carry out corresponding fault-tolerant processing: the report business module is switched failure, and the content recovery that will attempt to revise is original setting.
The present invention is the implementation method of the seamless changing of master and spare service module in a kind of communication equipment, this method is two kinds of mapping relations utilizing on the administration module: the mutual mapping conversion of subordinate's module I P address and data link mark and the mutual mapping conversion of data link mark and physical port, shine upon the seamless switching that conversion tables are realized active and standby business module by two of revising on this administration module.Compared with prior art, the inventive method only need change between network layer (IP layer) on the administration module and the data link layer and two kinds of mapping relations between data link layer and the physical layer just can realize switching of two active and standby functions between the business module, does not influence administration module simultaneously these two business modules are implemented management functions.And, in reversed process, not needing operation that service channel and OM channel are taken apart and rebulid, reversed process is simple, convenient, can guarantee to switch stable more, reliable, really accomplishes seamless switching completely.Embodiments of the invention prove, in reversed process, because implementing procedure is simple, rapid, convenient, switch success rate greater than 99.9%.
Description of drawings
Fig. 1 is the active and standby application model schematic diagram of switching control with module in the communication equipment;
Fig. 2 is the business module protocol stack model schematic diagram in the communication equipment;
Fig. 3 is the Operation and Maintenance traffic model figure before switching between business module A and the administration module D;
Fig. 4 is the Operation and Maintenance traffic model figure after switching between business module A and the administration module D;
Fig. 5 is the Operation and Maintenance traffic model figure before switching between business module B and the administration module D;
Fig. 6 is the Operation and Maintenance traffic model figure after switching between business module B and the administration module D;
Fig. 7 is the service communication illustraton of model before switching between business module A and the business module C;
Fig. 8 is the service communication illustraton of model after switching between business module B and the business module C;
Fig. 9 is the implementation method flow chart of seamless changing of master and spare service module of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, further describe the implementation method of main backup module seamless switching of the present invention in detail below in conjunction with accompanying drawing:
The present invention is the implementation method of the seamless changing of master and spare service module in a kind of communication equipment, the protocol stack model of business module as shown in Figure 2, in fact, each business module A, B, C and administration module D among Fig. 1 are reciprocity on protocol stack, that is to say that the protocol stack model of these modules all is identical.
Referring to Fig. 2, the protocol stack of business module is divided into Operation and Maintenance plane and service plane, and promptly business module A, B, C all possess the Operation and Maintenance function mutual with administration module D, and business module A or B also possess the mutual business function with business module C.From the Operation and Maintenance plane, business module is divided into Operation and Maintenance application layer, UDP/IP layer, data link layer and physical layer (being the PHY layer); From service plane, business module is divided into service application layer, UDP/IP layer, data link layer and physical layer (being the PHY layer).The data of transmitting terminal are shone upon to lower floor step by step from application layer, the data of receiving terminal then be from lower floor to the upper strata gradual deoxidizing, arrive application layer at last.Business module A is main usefulness before supposing to switch, and business module B is standby, and the purpose of switching is to make business function transfer to business module B from professional modules A, and the business function that promptly former cause business module A bears changes by business module B after switching and bears; The influence that Operation and Maintenance function between business module A/B and the administration module D should not switched.Observe from phenomenon: at some concrete time points, when main backup module all was in operate as normal, Operation and Maintenance plane and the service plane of business module A all were in state of activation; The Operation and Maintenance plane of business module B is in state of activation, and its service plane is in unactivated state.After masterslave switchover took place, the service plane of business module A became unactivated state, and the service plane of business module B becomes state of activation, and the Operation and Maintenance flat state of A and B is constant, promptly still is in state of activation.
Between the data link layer of business module A, B in the communication equipment that the inventive method is suitable for, the data link layer of C and administration module D and all be the communication mode of employing point-to-point between the data link layer of the data link layer of business module A/B and business module C.Adopt the UDP/IP protocol interconnection between transport layer/network layer of the transport layer/network layer of business module A, B, C and administration module D and between transport layer/network layer of the transport layer/network layer of business module A/B and business module C, they all are to carry out data interaction with the IP address as destination address.
The inventive method comprises following concrete operations step (can referring to shown in Figure 9):
(1) at first the initialization setting is carried out in the IP address of business module and administration module and physical port address and related data link.The initialization data of each module as shown in table 1 below (because business module A and B are active and standby each other, so the service plane IP address of distributing to their is identical, i.e. IP
APP_AB):
Each module initialization data of table 1
| The module title | Operation and Maintenance planar I P address | The operation maintenance data link | Service plane IP address | The business datum link | Physical port |
| Business module A | IP OM_A | DL OM_AD | IP APP_AB | DL APP_C | PhyPort A |
| Business module B | IP OM_B | DL OM_BD | IP APP_AB | DL APP_C | PhyPort B |
| Business module C | IP OM_C | DL OM_CD | IP APP_C | DL APP_AB | PhyPort C |
| Administration module D | IP OM_D | DL OM_DA DL OM_DB DL OM_DC |
(2) then, on administration module D, set up the mapping table of mapping table, data link layer label switched table and the data link mark and the physical port of the purpose IP address of subordinate's business module and data link mark respectively.
Business module IP address on the table 2 administration module D and data link mark switch mapping table
| The IP address | Data link mark before switching | Data link mark after switching |
| IP OM_A | DL OM_DA | DL OM_DB |
| IP OM_B | DL OM_DB | DL OM_DA |
What a hurdle was described in the middle of the table 2 is the mapping relations of switching the Operation and Maintenance planar I P address and the data link mark of the subordinate's business module on the Front Administration Module D.When administration module D sent data to business module A, destination address was IP
OM_APacket be mapped to DL in the IP address when being delivered to data link layer downwards
OM_DAAfter, again to the physical layer transmission; When administration module D received from the data of business module A, data link was labeled as DL
OM_DAPacket when upwards being delivered to the UDP/IP layer data link mark be mapped to IP
OM_AAfter, transmit to the Operation and Maintenance application layer again.IP
OM_BWith DL
OM_DBBetween also have same mapping relations.The mapping relations of switching the IP address of the subordinate's business module on the Backend Administration Module D and data link mark are shown in one hurdle, right side in the table 2.These two columns that contrast this table 2 as can be seen, variation has taken place in the IP address of business module and the mapping relations of data link mark before and after switching, for example, by IP
OM_AWith DL
OM_DAMutual mapping becomes IP
OM_AWith DL
OM_DBMutual mapping.
Data link layer label switched table on the table 3 administration module D
| The data link mark | The data link mark |
| DL OM_DA | DL OM_AD |
| DL OM_DB | DL OM_BD |
| DL APP_AB | DL APP_C |
Table 3 is described is Operation and Maintenance panel data link layer label switched table on the administration module D.Be labeled as DL
OM_DAPacket when being delivered to data link layer downwards, data link layer becomes DL with label switched
OM_ADAfter, again to the physical layer transmission; Otherwise physical layer will be labeled as DL
OM_ADPacket when upwards being delivered to data link layer, data link layer is DL with label switched
OM_DAAfter, upwards be delivered to the UDP/IP layer again.After switching, administration module D goes up data link layer label switched table and does not change.
Data link mark on the table 4 administration module D and physical port switch mapping table
| The data link mark | Physical port before switching | Physical port after switching |
| DL OM AD | PhyPort A | PhyPort B |
| DL OM BD | PhyPort B | PhyPort A |
| DL APP C | PhyPort A | PhyPort B |
A hurdle is described in the middle of the table 4 is to switch the data link mark on the Front Administration Module D and the mapping relations of physical port.Be labeled as DL
OM_ADPacket when being delivered to physical layer downwards, from physical port PhyPort
ASend; Otherwise, from physical port PhyPort
APacket upwards be delivered to data link layer and subsidiary mark DL
OM_ADOne hurdle, right side is described in the table 4 is to switch the data link mark on the Backend Administration Module D and the mapping relations of physical port.These two columns that contrast this table 4 as can be seen, variation has taken place in the mapping relations of data link mark and physical port before and after switching, and its essence is that exchange has taken place the data link mark data link mark corresponding with physical port B of physical port A correspondence.For example, by DL
OM_ADWith PhyPort
AMutual mapping becomes DL
OM_ADWith PhyPort
BMutual mapping.
(3) last, when administration module monitors active and standby business module when switching, revise the IP address on two active and standby business module Operation and Maintenance planes and the mapping relations of data link mark simultaneously, and the mapping relations of data link mark and active and standby business module physical port, make administration module correctly carry out oam, and make business datum correctly be sent to current mainboard two active and standby business modules.
Referring to business module A shown in Figure 3 and the Operation and Maintenance traffic model figure between the administration module D.As business module A during to administration module D transmit operation service data, Operation and Maintenance application layer construction data bag, passing to the UDP/IP layer downwards and announcing its destination address is IP
OM_DWhen packet passed to data link layer downwards after the UDP/IP layer is handled, destination address was from IP
OM_DBe mapped to DL
OM_ADAfter the data link layer deals on Operation and Maintenance plane, packet is delivered to physical layer downwards again; Packet is further encapsulated after arriving physical layer, and is with physical port information PhyPort
AAdministration module D is at physical port PhyPort
AOn receive this packet after, add data link mark DL
OM_AD, and upwards be delivered to data link layer; Data link layer then according to data link layer label switched table with the mark of packet from DL
OM_ADBe exchanged for DL
OM_DAAfter, transmit to the UDP/IP layer again; After the UDP/IP layer is received this packet, the data link mark is mapped to IP
OM_A, pass to the Operation and Maintenance application layer; The Operation and Maintenance application layer is according to the data packet addressed IP that receives
OM_AThe transmit leg that can identify this packet is business module A.When administration module D when business module A sends data, its processing procedure is exactly in fact above-mentioned inverse process.After carrying out masterslave switchover, the Operation and Maintenance traffic model between business module A and the administration module D as shown in Figure 4.Comparison diagram 3 and Fig. 4 can see, on administration module D, though the physical connection of itself and business module relation does not change, but, variation has taken place in the mapping relations (referring to table 2) of the IP address of business module and data link mark and the mapping relations (referring to table 4) of data link mark and physical port, and, because the variation of twice mapping relations is equivalent to the effect that two negatives make a positive, so switch back business module A and administration module D still can normally interactive operation service data.
Same, the traffic model of the Operation and Maintenance before and after Fig. 5 and Fig. 6 represent respectively to switch between business module B and the administration module D, contrast this two figure, also can find to have taken place the change of twice mapping relations, not carry out the mutual of operation maintenance data between business module B and the administration module D but influence.Process between its concrete reversed process and above-described Fig. 3 and Fig. 4 is identical, repeats no more here.
Switch the business module A/B of front and back and the service communication model between the business module C referring to Fig. 7 and Fig. 8 introduction, the service data interaction between business module A/B and the business module C is to realize by the data link layer label switched of administration module D.When business module A when business module C sends business datum, Operation and Maintenance application layer construction data bag, passing to the UDP/IP layer downwards and announcing its destination address is IP
APP_CWhen this packet passed to data link layer downwards after the UDP/IP layer is handled, destination address was from IP
APP_CBe mapped to DL
APP_CAfter the data link layer deals on Operation and Maintenance plane, packet is delivered to physical layer downwards again; Packet is further encapsulated after arriving physical layer, is with physical port information PhyPort
AAdministration module D is at physical port PhyPort
AOn receive this packet after, add data link mark DL
APP_C, and upwards be delivered to data link layer; Data link layer again according to data link layer label switched table with the mark of packet from DL
APP_CBe exchanged for DL
APP_ABAfter, this packet is delivered to physical layer downwards, and packet is further encapsulated after the arrival physical layer, and with the physical port information PhyPort that goes up destination address
CAfter, deliver to business module C.After carrying out masterslave switchover, standby because business module A becomes, handle according to above-mentioned same flow process by business module B, promptly this packet is to be with physical port information PhyPort
BArrive administration module C (referring to Fig. 8).Because the administration module D of this moment goes up the data link mark data link mark corresponding with physical port B of physical port A correspondence and exchanges (referring to the exchange of the mapping relations of table 4 description), i.e. DL
APP_CWith PhyPort
AThe mutual mapping relation has been changed to DL
APP_CWith PhyPort
BThe mutual mapping relation is so after business module B sent business data packet, administration module D was at physical port PhyPort
BOn receive this packet after, just add data link mark DL
APP_CUpwards be delivered to data link layer; Processing procedure afterwards with switch before identical.Therefore, the change of mapping relations only takes place in the transmission of business datum, has just realized that business function is by the transfer of business module A to business module B.
In a word, the inventive method is business module purpose IP address and data link mark mutual mapping (i.e. first kind of mapping relations of table 2 description) and data link mark and the physical port mutual mapping of utilizing on the administration module D (i.e. second kind of mapping mapping relations of table 4 description), realizes the purpose that data are switched by two kinds of mapping tables revising on the administration module D.
Method of the present invention has carried out implementing test in CDMA2000 1x base station controller (BSC) equipment that the applicant produces, evidence, in the masterslave switchover process, because the implementing procedure of this method is simple, rapid, convenient, switch success rate greater than 99.9%, system works is reliable and stable, has realized goal of the invention fully.
Claims (5)
1, a kind of implementation method of seamless changing of master and spare service module, it is characterized in that: this method is provided with two addresses respectively to active and standby business module: one of them is independent separately, be used for this module of unique identification and carry out the mutual Operation and Maintenance IP address of operation maintenance data with administration module, and another is both service IP address identical, that be used for carrying out with other business module service data interaction; When masterslave switchover takes place, revise the IP address of subordinate's business module and the mapping relations of data link mark simultaneously by administration module, and the mapping relations of data link mark and physical port, so that the uninterrupted management function that active and standby business module executable operations is safeguarded, and realize the seamless switching of active and standby business module business function; Described method comprises the following steps:
(1) the initialization setting is carried out in the IP address of business module and administration module and physical port address and related data link;
(2) on administration module, set up the mapping table of mapping table, data link layer label switched table and the data link mark and the physical port of the IP address of subordinate's business module and data link mark respectively;
(3) monitor active and standby business module when switching when administration module, revise the IP address on two active and standby business module Operation and Maintenance planes and the mapping relations of data link mark simultaneously, and the mapping relations of data link mark and active and standby business module physical port, make administration module correctly carry out oam, and make business datum correctly be sent to current mainboard active and standby business module.
2, the implementation method of seamless changing of master and spare service module according to claim 1 is characterized in that: described method is applicable to that data link layer adopts point-to-point communication mode, transport layer/network layer to adopt the communication equipment of UDP/IP protocol interconnection between the disparate modules.
3, the implementation method of seamless changing of master and spare service module according to claim 1 is characterized in that: described step (1) further comprises the following steps:
(11) initialization is provided with the IP address on the Operation and Maintenance plane of active and standby business module and related service module, the IP address and the physical port address of service plane respectively, and its operation maintenance data link of relative set and business datum link;
(12) initialization is provided with the IP address on the Operation and Maintenance plane of administration module, and its operation maintenance data link of relative set.
4, the implementation method of seamless changing of master and spare service module according to claim 1, it is characterized in that: described step (3) also comprises the following steps: the setting according to data link layer label switched table, to come from arbitrarily to go into end the source business module, with the packet exchange of data link mark sign to the purpose business module that goes out to hold arbitrarily, revise the data link mark of this packet simultaneously.
5, the implementation method of seamless changing of master and spare service module according to claim 1, it is characterized in that: described step (3) further comprises the following steps: after the conversion of mapping relations is finished in each modification, whether this mapping conversion of systems inspection is successful, if subsequent operation is carried out in success; Otherwise carry out corresponding fault-tolerant processing: the report business module is switched failure, and the content recovery that will attempt to revise is original setting.
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| CNB2004100840852A CN1306777C (en) | 2004-10-18 | 2004-10-18 | Method for realizing seamless changing of master and spare service module |
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| CN1306777C true CN1306777C (en) | 2007-03-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407645C (en) * | 2005-08-19 | 2008-07-30 | 华为技术有限公司 | Ethernet interface linking switching method |
| CN100499672C (en) * | 2005-10-20 | 2009-06-10 | 华为技术有限公司 | Method for distributing service based on terminal physical position |
| CN101399692B (en) * | 2007-09-27 | 2011-12-21 | 华为技术有限公司 | Method and system for service migration |
| CN106528327B (en) * | 2016-09-30 | 2019-06-21 | 华为技术有限公司 | A kind of data processing method and backup server |
| CN110932876B (en) * | 2018-09-19 | 2022-12-02 | 华为技术有限公司 | Communication system, method and device |
| CN111193758A (en) * | 2018-11-15 | 2020-05-22 | 西安诺瓦星云科技股份有限公司 | Display management system and maintenance method thereof |
| CN112231153B (en) * | 2020-09-30 | 2023-03-31 | 新华三信息安全技术有限公司 | Equipment switching method and network equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07154429A (en) * | 1993-11-29 | 1995-06-16 | Kawasaki Steel Corp | Automatic duplex method for lan-wan-lan connection ip router |
| CN1463081A (en) * | 2002-05-30 | 2003-12-24 | 华为技术有限公司 | Method for realization of fast rearranging main spared device in communication devices |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07154429A (en) * | 1993-11-29 | 1995-06-16 | Kawasaki Steel Corp | Automatic duplex method for lan-wan-lan connection ip router |
| CN1463081A (en) * | 2002-05-30 | 2003-12-24 | 华为技术有限公司 | Method for realization of fast rearranging main spared device in communication devices |
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