CN100342666C - Rearrangement method in communication system - Google Patents
Rearrangement method in communication system Download PDFInfo
- Publication number
- CN100342666C CN100342666C CNB2004100444668A CN200410044466A CN100342666C CN 100342666 C CN100342666 C CN 100342666C CN B2004100444668 A CNB2004100444668 A CN B2004100444668A CN 200410044466 A CN200410044466 A CN 200410044466A CN 100342666 C CN100342666 C CN 100342666C
- Authority
- CN
- China
- Prior art keywords
- veneer
- control
- former
- slot
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000006854 communication Effects 0.000 title claims abstract description 81
- 238000004891 communication Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008707 rearrangement Effects 0.000 title abstract 9
- 238000013507 mapping Methods 0.000 claims abstract description 55
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 12
- 102100029368 Cytochrome P450 2C18 Human genes 0.000 description 22
- 101000919360 Homo sapiens Cytochrome P450 2C18 Proteins 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 11
- 238000012986 modification Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/15—Interconnection of switching modules
- H04L49/1515—Non-blocking multistage, e.g. Clos
- H04L49/1523—Parallel switch fabric planes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention relates to a communication method and discloses a rearrangement method in a communication system so that the switching operation of a business passage before and after rearrangement is simple, reliable and fast with high efficiency and meets the rearrangement requirement of equipment of a telecom stage. In a communication system based on a communication mode with shared memory, the rearrangement method in the communication system uses a control single board for controlling the rearrangement operation of a single board on a bus in a centralized way. A single board in a frame realizes transparent rearrangement through a logic slot position mapping mechanism and a physical slot position mapping mechanism. When rearrangement is carried out, only a logic slot position mapping table and a physical slot position mapping table are updated. Under the condition of communication between frames, mapping information of sending and receiving passages also need to be updated, and addresses of control command words, etc. are rearranged. The present invention comprises two operation modes for the rearrangement of a control single board and equipment single board.
Description
Technical field
The present invention relates to a kind of communication means, particularly based on the reverse method of veneer in the communication system of shared drive communication mode.
Background technology
Communication network requires and can provide reliable continual service for its user, especially in the application of some important service, as electronic money, order processing, customer service, stock control, Email and Internet access etc., professional survivability becomes than more important in the past, and its availability requirement can reach 99.999% even higher.Therefore, the network survivability ability becomes the key factor that influences network design and structure, and the equipment that uses in communication network also needs very high reliability accordingly.
Redundancy backup and masterslave switchover technology are a kind of solutions commonly used.Redundancy backup and masterslave switchover technology have multiple backup mode, such as 1+1, and 1: 1,1: N etc.1+1 backup is a kind of simple protected mode; active and standby in the system formed a service functional unit in logic with the unit; be that protected unit has a stand-by unit; the main real-time processing of being responsible for business with module; standby professional the maintenance and main data consistent with the unit; detect former main during with cell failure initiation switch, take over former master with the business on the unit.Stand-by unit is only started working after breaking down in the formula different with the 1+1 backup backup in 1: 1.And 1: the N backup is exactly that a plurality of units are shared a stand-by unit, and when any one master was broken down with the unit, stand-by unit was promptly taken over its work.
Usually, the telecommunication apparatus of a complexity comprises a plurality of processing unit collaborative works, needs to communicate between each unit; And in whole communication network, also need communication between the different node devices.In order to guarantee under network fault conditions the equipment self-healing ability, to guarantee the integrality of data and keep service quality, switch and must in the time limit of appointment, finish, recover professional as early as possible, make the communication system influence minimum.As seen, the performance of wrap protection all has great influence for the reliability of system and even the survival ability of whole network.
The reverse method that adopts in the communication system mainly contains based on circuit switching with based on reverse methods such as Internet protocol (Internet Protocol is called for short " IP ") communications at present.
Fig. 1 (a) shows the changeover apparatus in traditional circuit switching system.Circuit switching exchange realizes that by " switching network " switch fabric unit comprises two unit of active and standby exchange plane, reaches the effect of redundancy backup.Each Service Processing Unit all keeps physical connection with active and standby crosspoint, and can transceive data from two exchange planes, but only selects for use during operate as normal main with the data processing on the plane.When switch fabric unit is switched, can notify all to indicate each business module to switch on the new exchange plane.For guarantee switching operation the regulation time limit in finish, switching of switch fabric unit must realize by hardware mode.In addition, each Service Processing Unit also comprises active and standby Service Processing Unit, is used to protect service communication separately.For active and standby Service Processing Unit, switching network adopts the mode of operation of " two a receipts ", is about to business datum and exchanges to simultaneously on the input/output end port of active and standby Service Processing Unit.Determine the mode of operation of port transmitting-receiving between the active and standby business module by arbitration or heartbeat handshake method.During operate as normal, have only the master can manage business and send data with the unit, the output port of spare module is in to disconnect and connects or high-impedance state; When switching, active and standby unit is according to arbitration result decision disconnection or be operatively connected input/output end port.
Fig. 1 (b) shows the changeover apparatus in traditional IP network.Each equipment or network node all are assigned an independent IP address in the IP network, realize switching operation by switching the IP address.Such as the webserver that a dual-host backup is arranged on the network, when providing the unexpected power down of a station server of service or generation to delay machine unusually, another standby server can switch to its IP address at once and take over service.
As seen, for traditional switching technique of realizing based on circuit switching,, therefore must connect or distribution by backboard its versatility and poor expandability, cost height owing to active and standby arbitration, switch notice etc. and all need directly to realize by hardware.Switching technique for IP-based dual-host backup realization, its switching performance directly is subjected to the restriction of IP technical limitation,, transmission bandwidth uncertain as propagation delay time do not guarantee etc., causes can not satisfying in communication network the demand of real time business, high quality-of-service far away.
In actual applications, there is following problem in such scheme: must adopt hardware to realize versatility and poor expandability, cost height based on Circuit-switched switching technique; IP-based switching technique can not be applied in real-time, the high-quality telecommunication service.
Cause the main cause of this situation to be, hard-wired changeover apparatus must be difficult for upgrading and test, and cost be higher at concrete circuit system design; The switching technique of IP address switchover directly is subjected to the IP technology limitation, and propagation delay time is uncertain, transmission bandwidth does not guarantee and the not high shortcoming of transmission quality and the IP technology has.
Summary of the invention
In view of this, main purpose of the present invention is to provide the reverse method in a kind of communication system, make switch before and after the handover operation of service channel simple and reliable, rapidly and efficiently, satisfy the requirement of switching of telecom carrier-class device.
For achieving the above object, the invention provides the reverse method in a kind of communication system, described communication system comprises the polylith veneer, wherein comprises at least one control veneer, is used for carrying out shared drive communication by all described veneers of bus centralized control; Also comprise logical slot and physical slot position mapping table on the described veneer, be used to indicate the logical slot of all veneers and the mapping relations between the physical slot position, described veneer comprises following steps in the time of need switching:
The described control veneer of A is revised logical slot and the physical slot position mapping table on all described veneers, and the logical slot of the veneer that the former former head is used number is mapped to the physical slot item of original standby veneer;
The described control veneer of B is revised the inherent logic slot number of being stored on described original primary and backup veneer.
Wherein, described steps A also further comprises following substep:
The described control veneer of A1 is revised logical slot and the physical slot position mapping table on this plate, the logical slot of the veneer that the former former head is used number is mapped to the physical slot item of original standby veneer, the logical slot of original standby veneer number is mapped to the physical slot item of the veneer that the former former head uses;
In logical slot that the described control veneer of A2 upgrades this plate and the physical slot position mapping table content synchronization logical slot and physical slot position mapping table to the every other veneer.
Described communication system is based on compact interconnection bus of peripheral devices platform.
The present invention also provides the reverse method in a kind of communication system, described system comprises at least two frames of intercommunication mutually, each frame comprises the polylith veneer, wherein comprises at least one control veneer, is used for carrying out shared drive communication by all described veneers of this frame of bus centralized control; Described control veneer also comprises the channel information table, is used to preserve the mapping relations of logical slot number with the transceive data memory block plot of all veneers in the frame, and described control veneer comprises following steps in the time of need switching:
D carries out total line traffic control and switches, and former main with control veneer release bus control right, former standby control veneer is taken over described bus control right;
E updates stored in described former main with the channel information table on control veneer and the described former standby control veneer, with the described former main transceive data memory block plot that number is mapped to described former standby control veneer with the logical slot of controlling veneer;
F forbids described former main with controlling veneer to each equipment veneer distribution receive path.
Wherein, when the veneer beyond the control veneer in the system is switched, comprise following steps:
G updates stored in the channel information table on the described control veneer, former main logical slot with veneer number is mapped to the transceive data memory block plot of former standby board;
H upgrades described former main with being used to realize shared drive control of communication command word address information between the bottom layer driving module on veneer and the former standby board;
The described control veneer of I is revised described former main with the inherent logic slot number of storing on veneer and the former standby board.
Before switching, check and whether to switch the primary and backup veneer that relates to all using, switch if then begin.
Described communication system is based on compact interconnection bus of peripheral devices platform.
Can communicate by asynchronous transfer mode between the described frame.
By relatively finding, technical scheme difference with the prior art of the present invention is, in based on the communication system of shared drive communication mode, use the switching operation of veneer on the control veneer centralized control bus, veneer is realized transparent switching by logical slot and physical slot position mapping mechanism in the frame, only need upgrade logical slot and physical slot position mapping table when switching, under communication between frame, also need upgrade to send and receive path map information and control command word address etc. are switched, comprise and control board switchover and equipment veneer is switched two kinds of modes of operation.
Difference on this technical scheme; brought comparatively significantly beneficial effect; promptly because the shared drive communication mode provides bus operation easily; logical slot and physical slot position mapping mechanism provide simple switching operation mode; the centralized control of bus has guaranteed the reliability and the real-time of switching; the passage mapping mechanism has been realized switching under the signal intelligence between frame; this reverse method provides seamless protection mechanism; real-time that assurance is switched and reliability; reduce network cost, improved the system expandability and network survivability ability greatly.
Description of drawings
Fig. 1 is the principle schematic of existing switching technique;
Fig. 2 is a communication mechanism schematic diagram between structure, shared drive communication mechanism and the frame of PSM frame;
Fig. 3 is according to an embodiment of the invention by revising the reverse method flow chart that logical slot and physical slot position mapping table are realized;
Fig. 4 is the reverse method flow chart that communication realizes by modification channel information table down between frame according to an embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is based on the shared drive communication technology, finish the switching operation of unit, can satisfy the requirement of real-time, the transparency by the modification of map addresses.
In shared drive communication, a plurality of units are realized memory shared by bus access, and each veneer on the same bus is realized communication by the implementing reading and writing data communication in shared drive district and can pass through other interfacings between the different bus.In the present invention, have mapping relations between the physical location of each veneer and the logical place on the bus, switch by modification realization the transparent of unit of mapping relations, its extensibility and real-time are better.
In one embodiment of the invention, employing is based on compact Peripheral Component Interconnect (CompactPeripheral Component Interconnect, being called for short " CPCI ") the PSM frame of bus platform realizes switching of each veneer on the bus, promptly unit switches.
CPCI is a kind of high-performance industrial bus based on Peripheral Component Interconnect (Peripheral Component Interconnect is called for short " PCI ") standard, and the mechanical property of having inherited European integrated circuit board simultaneously is to realize reliable structure.The PSM machine frame has 16 groove positions, and front and back can plate, and the veneer of processing mainly contains 4 classes, is called URCU, UACU, UGPU, UFIU and general PCI buckle (PCIMezzanine Card is called for short " PMC ").Wherein, the URCU plate is the control veneer in the PSM frame, is responsible for the management function of PSM frame, adopts 1+1 backup; The UACU plate is the assist control veneer in the PSM frame, and auxiliary URCU plate is finished controlled function, is mainly used in to realize the interconnection between the physically different section buses in the PSM frame, uses in pairs with the URCU plate; The UGPU plate is the Service Processing Unit in the PSM frame, supports various types of traffic, disposes 12 blocks of UGPU plates in 1 PSM frame at most, and system can be configured to 1+1 backup or 1+N backup etc. according to type of service.PMC is the little buckle in the CPCI system, can be buckled on URCU veneer or the UGPU veneer according to the configuration needs, and URCU and UGPU provide general PMC interface, and PMC generally is used to finish specific function or enhancement process function; The UFIU plate is used to realize connecting between frame, is specifically designed to the Optical Fiber Interface Board of asynchronous transfer mode (Asynchronous TransferMode is called for short " ATM ") optical-fiber network, is a kind of PMC buckle, adopts the PMC interface, is buckled on the URCU plate and uses.
Fig. 2 (a) shows between structure, part and the frame of PSM frame and communicates to connect mode.
In the PSM frame, the communication between each veneer is mainly based on the pci bus technology, communicating by letter based on the CPCI core bus between URCU plate and each UGPU plate, the communicating by letter then based on the pci bus of loading plate inside of URCU plate or UGPU plate and PMC buckle.Pass through application-specific integrated circuit (ASIC) (Application Specific Integrated Circuits such as PCI bridge between each veneer, abbreviation " ASIC ") chip is realized being electrically connected and address translation feature, promptly as long as each bridge sheet is correctly disposed, all veneers in the CPCI platform can be visited memory headroom each other mutually, and this communication mode by the visit Sharing Memory Realization is shared drive communication.According to the pci bus standard, pci bus can be carried out cascade by the PCI bridge, but owing to be subjected to the restriction of characteristic such as electric, can only hang 8 PCI equipment on each section pci bus at most, so the backboard reality of the PSM frame of 16 groove positions is made up of two sections cpci bus.Finish bridge joint by the UACU plate between two sections cpci bus, realize striding the visit of bus and the communication between the bus.But can only there be a PCI main equipment to finish bus arbitration simultaneously for each section cpci bus, therefore the URCU plate has only 1 master to be used to control two sections cpci bus with veneer under active/standby mode, when standby URCU plate then all disconnects the URCU plate and switches with two sections cpci bus, standby URCU plate is seized bus control right, main with URCU plate release bus control right, corresponding UACU plate is also switched with URCU.
The shared drive communication of PSM frame is mainly finished by UFIU bottom layer driving, CPCI bottom layer driving and PMC buckle bottom layer driving module.Server+client mode by ATM between the PSM frame is realized, adopts the carrying of ATM optical transport network.The optical interface that UFIU had is linked the ATM optical transport network, and UFIU bottom layer driving module is finished the communication between the PSM frame.CPCI bottom layer driving module is finished communicating by letter between the URCU plate and each UGPU plate in the PSM frame.Every PMC buckle bottom communication module is finished communicating by letter between its loading plate and PMC buckle.As seen, the switching when taking place of URCU or UGPU plate and switched relevant communication module and only related to and be responsible for the CPCI bottom layer driving module of communicating by letter in the UFIU bottom layer driving module of communicating by letter between frame or the responsible frame.
Fig. 2 (b) shows on the cpci bus memory shared mechanism between each veneer.The operation principle of CPCI bottom communication module is exactly the memory shared between each veneer.Every veneer all reserves a shared physical memory for other plate, be mapped on the cpci bus by PCI bridge sheet, be mapped to the PCI memory space of other veneers again by PCI bridge sheet, when other plates are visited this section PCI memory space, in fact just had access to the physical memory of source plate.As seen, the mapping of PCI bridge sheet has realized the memory shared between the different veneers.
Fig. 2 (c) shows and adopts UFIU to realize the mechanism of communicating by letter between the PSM frame.The design philosophy of UFIU bottom communication module is similar with CPCI, is based on the mapping of shared drive and CPCI address space equally, and difference UFIU communication module realizes based on the pattern of atm server+client.On connection mechanism, UFIU links to each other with the ATM optical-fiber network by optical interface, under the exchange of the pattern of atm server+client, realize with other PSM frames or node between communicate by letter.In PSM frame inside, UFIU again and realize the transceive data function of each UGPU plate between each UGPU board communications by the mode of shared drive.Every block of UGPU plate is that UFIU reserves certain shared drive, by aforementioned CPCI address space mapping mode, can also be comprised the UFIU buckle visit on the URCU plate naturally by other CPCI veneer.When UFIU when the light mouth receives data, by ATM adaptation layer (the ATMadaptation layer 5 on the UFIU plate, abbreviation " AAL5 ") segmentation and reorganization sublayer (Segmentation andReassemble, be called for short " SAR ") the dedicated processes chip, be the asic chip etc. of CN8236 such as model, the UFIU that directly visits and be stored in corresponding reception UGPU plate receives the shared drive district; When the data of each UGPU plate mail to outside the PSM frame, only need copy to send the shared drive district at UFIU, take out automatically and to be forwarded to ATM by optical interface online by the SAR dedicated processes chip on the UFIU plate.
In the ATM net of carrying PSM interframe interconnection, ATM switch is by the Virtual Channel in the letter head (Virtual Path is called for short " VP ") indicator V PI and virtual path (Virtual Channel is called for short " VC ") indicator V CI pathfinding.On forming, many VC of a VP carrying, so VP can regard a plurality of VC set with identical vpi value as.Have different vpi values between VP, each VC that belongs to a VP together has different VCI, and the VC that adheres to different VP separately can have identical VCI value.Usually, VC can be used for directly finishing two connections between the user, and VP then can be used for the connection between different segment.VPI is only switched in the VP exchange, and the VCI of cell remains unchanged in the transmission course of whole VP link.VC is connected the switching node place, searches mapping table according to the VPI and the VCI of cell in the virtual path, obtains corresponding new VPI, VCI.
Because the network configuration between the PSM frame is relatively stable, therefore general Permanent Virtual Channel (the Perpetual Virtual Path that adopts, be called for short " PVP ") and Permanent Virtual Path (Perpetual VirtualChannel, be called for short " PVC "), the foundation of PVP and PVC be according to the needs of expection by the pre-specified corresponding VPI/VCI that is connected and the input VPI/VCI at each switching node place with export between VPI/VCI mapping relations and finish.
When communicating by letter between the PSM frame, generally adopt different VPI to represent different PSM frames, the different veneers in the frame are then represented with VCI.Therefore on the UFIU plate, must finish VCI pathfinding function, promptly shine upon the VC passage of each veneer, this realizes by the mapping that sends VCC table (SEG VCC) and reception VCC table (RSMVCC).
Shared drive address area on the SAR of UFIU dedicated processes chip, distributed the URCU plate and with the transmission of each UGPU plate of frame with receive formation, SEG VCC table and RSM VCC table and send buffer description (Send Buffer Descriptor is called for short " SBD ") table etc.Shared drive address area at URCU, operation management maintain (the Operation that has mainly distributed URCU, Administration, Maintenance is called for short " OAM ") the transceive data buffering area of cell and cell of data, the state queue of transmitting-receiving and with the transmission data buffer zone of each UGPU plate of frame.Shared drive address area on each UGPU plate has distributed local transmitting-receiving buffer descriptor, reiving/transmitting state formation, local SEG VCC table and RSM VCC to show and reception data buffer.
The SAR dedicated processes chip of UFIU mainly relies on VCC to show to receive and dispatch ATM cell between next and the external world.Send the VCC epi-position in the shared drive of SAR, each veneer allows to set up 256 at most and sends PVC, and the index value of list item sends the VCC index exactly; For receiving the VCC table, each veneer allows to set up 256 at most and receives PVC equally, and the index value of list item receives the VCC index exactly.VCC index and a VPI, VCI link are corresponding.The PVC of UFIU configuration is exactly a corresponding relation of setting up a VCC index and PVC for transmitting-receiving between the frame of veneer, also is the mapping relations between VPI, VCI link and the every veneer.The PVC of UFIU veneer all adopts unidirectional PVC, and the foundation and the dismounting that therefore send PVC and reception PVC are independently, and both also distribute separately at call number.
As seen, under communication between frame, in the PSM frame, need to come addressing, promptly send PVC and main frame transmission VCC table is carried out index configurations by the physical slot item by VCC index in the VCC table and the corresponding relation of PVC; Receiving PVC then number receives the VCC table to main frame by logical slot and carries out index configurations.When switching generation, extraneous ATM exchange can not change, promptly can not switch VPI, the corresponding VCC index of VCI link, it is therefore actual that what switch is exactly the corresponding relation of this VCC index PVC passage, be VCC item and the corresponding relation that receives the physical slot item, to change the flow direction of receiving data units.
In one embodiment of the invention, adopt the mapping transformational relation of logical slot and physical slot position to realize the reverse method of communicating by letter based on the CPCI shared drive.System distributes a logical slot to each veneer on the bus, higher layer applications is visited corresponding veneer by this logical slot, all dispose the mapping table of a logical slot and physical slot position simultaneously in the CPCI bottom layer driving module on every veneer, this table has reflected the counterlogic groove position that each veneer is assigned on the physical location.In the communication process, CPCI bottom layer driving module shows veneer on the index physical location according to this.The actual physics groove position of logical slot and veneer is consistent under the system initial state, the higher layer applications module passes to CPCI bottom layer driving module with the logical slot of data cell and purpose veneer, can search logical slot and physical slot position mapping table according to this logical slot CPCI bottom layer driving module, be converted to the actual physics groove position of purpose veneer, by the shared address spatial mappings of PCI bridge, the CPCI space address that converts corresponding shared drive to conducts interviews again.Directly the bottom with the PSM frame is relevant with physical slot position mapping table mechanism for this logical slot, can finish by the mode that direct index is searched, and therefore the efficient to CPCI communication does not have influence.
When certain one or more veneer is switched, only need to revise logical slot and physical slot position mapping relations table on all veneers, get final product switching of equivalent realization veneer.Such as, the former main logical slot with veneer that need switch number is 1 to be mapped to its physical slot item 1, and the logical slot of its standby board number is 2 to be mapped to its physical slot item 2, when then two veneers are switched, change mapping table into logical slot number 1 and be mapped to physical slot item 2, logical slot numbers 2 is mapped to physical slot item 1, i.e. the switching operation of main and standby boards has been finished in equivalence.In like manner also can realize the switching operation of other standby modes easily.As seen, this reverse method is not only easy to operate, and can finish at a high speed, and before and after this switching operation, service communication almost is not affected, and has guaranteed professional proper communication.
In a preferred embodiment of the present invention, adopt central controlled method to realize switching operation, make that switching of unit is more simple and reliable.Such as, in the aforementioned PSM frame, the logical physical slot number mapping table of all veneers of CPCI control veneer URCU plate centralized control, every veneer is also placed in logical slot and physical slot position mapping table in the shared drive of veneer, concentrate modification synchronously by the URCU plate, guarantee the normal operation of whole communication system.
In another embodiment of the present invention, every veneer is also preserved logical slot and the physical slot position information of self, then when revising logic and physical slot position mapping relations table, need to revise self the logical slot information of being preserved in the relevant veneer of switching.Such as, when the veneer of the veneer of foregoing No. 1 physical slot position and No. 2 physical slot positions is switched, except all mapping tables need be revised, be stored in No. 1 logical slot on the veneer of physical slot position and number need change No. 2 into, number need change into from original No. 2 No. 1 and be stored in No. 2 logical slots on the veneer of physical slot position from original No. 1.
According to foregoing, Fig. 3 shows according to an embodiment of the invention by revising the reverse method idiographic flow that logical slot and physical slot position mapping table are realized.This method is suitable for for switching all of various veneers on the bus, comprises control veneer and equipment veneer.
In step 301, the control veneer upgrades logical slot and physical slot position mapping table on this plate according to the board switchover mode.In the PSM frame, URCU revises the mapping table of self storing.
Then enter step 302, in the control synchronous logical slot that upgrades of veneer and the physical slot position mapping table content logical slot and physical slot position mapping table to all veneers.In the PSM frame, URCU then revises every mapping table on the UGPU plate.The physical slot item of the logical slot of the veneer of during modification the former former head being used number and original standby veneer is mapped, and the physical slot item of the veneer that the logical slot of original standby veneer number and the former former head are used is mapped.Other veneers number send data by logical slot, and when data arrived, the control veneer can be used veneer according to the master that the corresponding relation in the mapping table is delivered to these data after switching.
Then enter step 303, the control veneer upgrades this and switches himself logical slot information of being stored on the every related veneer.
In one embodiment of the invention, consider the situation of communicating by letter between frame, the external interface plate of each frame is preserved and is used for the channel information mapping table that the veneer data cell is transmitted.The channel information mapping table here is the information that the external interface plate is used for coming according to the channel number of correspondence with foreign country veneer physical slot item in the index frame, is aforementioned transmission VCC table and receives the VCC table in the PSM frame.When switching generation, need to revise these information, could guarantee the normal operation of communicating by letter between frame.Such as, in the aforementioned PSM frame, preserve information such as receiving VCC table and transmission VCC table on the UFIU interface board based on the ATM optical interface, come index to transmit the data cell of each veneer according to these information, finish between frame and communicate by letter.Therefore, when board switchover takes place, upgrade after all logical physical groove bit tables, also need to revise relevant transmission VCC table and receive information such as VCC table according to the reverse method of aforementioned logic-based physical slot position mapping table; When the control veneer is switched, then need to carry out the bus handover operation, bus control right is handed to standby board, arrive standby board with being stored in former master with the information updating on the control veneer.Need to prove that the active and standby plate information updating that control is carried out during board switchover mainly is the information relevant with control board itself, as the channel map modification of communicating by letter between the transceiver channel mapping table of active and standby control board self and the active and standby plate.The channel map relevant with the UGPU veneer at ordinary times (configuration/deletion/UGPU plate is switched) operation the time just active and standby control board has been carried out synchronously, so these information do not need to upgrade again when control board is switched.In addition, owing to all have the ATM driver module on equipment veneer and the control veneer, and need to communicate between the different ATM driver modules, this bottom layer driving module communication also is that the mode by shared drive realizes, specifically, realize by writing the control command word exactly, therefore when switching generation, also need to revise the corresponding control command words address toward the corresponding control command words address.As seen, the switching operation that framework communication needs down in addition only relates to interface board bottom layer driving module, and simple and reliable, real-time is better.
Under communication between frame, the control veneer is switched different treatment steps when each equipment veneer is switched.Fig. 4 (a) shows the control board switchover method that communication realizes by modification channel information table down between frame according to an embodiment of the invention.
In step 411, carry out total line traffic control and switch, former main with control veneer release bus control right, former standby control veneer is taken over bus control right.Such as in the PSM frame, former standby URCU is in the bus off-state, switches when taking place, and former master delivers bus control right with URCU and gives former standby URCU by shaking hands.
Then enter step 412, upgrade the channel information table of the control veneer correspondence on the active and standby control veneer.Such as in the PSM frame, when the URCU plate is switched, need to upgrade the transmission VCC table of active and standby URCU self and receive information such as VCC table, show all to be stored on the URCU and these send the VCC table and receive VCC.Send the VCC table and receive the plot that has comprised each piece veneer transceive data memory block in the VCC table, so-called plot is meant basic address, can find the original position of transceive data memory block according to this base value, then the position that should deposit through the data that calculate current needs transmitting-receiving according to the situation of available data in the transceive data memory block.By former main logical slot with the control veneer number being mapped to the transceive data memory block plot of former standby control veneer, be sent to the former former head and just deliver to now in original standby control veneer, thereby realization is switched with the data of controlling veneer.
Then enter step 413, forbid that former master distributes to each equipment veneer receive path with the control veneer.Such as in the PSM frame, former main with control UGPU plate on the URCU plate, therefore can not reallocate to each equipment veneer receive path.
Fig. 4 (b) shows the equipment veneer that communication realizes by modification transceiver channel information down between frame according to an embodiment of the invention (other veneers except that the control veneer) reverse method.
In step 421, update stored in and active and standbyly switch the corresponding channel information table of related equipment veneer on the veneer with control.Such as in the PSM frame, need to upgrade the UGPU that relates to that switches that is stored on the active and standby URCU and send information such as VCC table and reception VCC table accordingly.As previously mentioned, the transmission VCC of all UGPU table and receive information such as VCC table and all be stored on the URCU, each UGPU also stores transmission VCC table and the information such as reception VCC table of self simultaneously.
Then enter step 422, upgrade the control command word address information switch on the equipment veneer that relates to, the control command word address here is the shared drive communication that is used to realize between the bottom layer driving module.In the PSM frame, the UGPU plate need be realized communicating by letter with the bottom ATM driver module of URCU plate by write the control command word on the control command word address, need upgrade the corresponding control command words address when therefore switching.
Then enter step 423, the control veneer is revised the sendaisle information and the receive path information of switching related master/slave device veneer.Sendaisle information here and receive path information are similar to the effect of inherent logic slot number concerning each piece veneer.
In actual applications, for guarantee to switch smoothly, generally before switching, also to check and whether switch the primary and backup veneer that relates to all using, if then begin to switch, otherwise report to the police to network management system.
Those of ordinary skill in the art are appreciated that, except CPCI platform or PSM frame, in other communication systems based on the shared drive communication mode, the reverse method that all can adopt the present invention to provide is realized device switching, and does not influence the spirit and scope of the invention.
In the present invention among the embodiment between the PSM frame cascade scheme mainly adopt UFIU buckle and ATM optical interface to realize, those of ordinary skill in the art are appreciated that, adopt other physical interfaces to realize between the different PSM frames or during the communication between the different cpci bus, the given reverse method of the present invention can be finished device switching in the same old way, and does not influence the spirit and scope of the invention.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (8)
1. the reverse method in the communication system, described communication system comprises the polylith veneer, wherein comprises at least one control veneer, is used for carrying out shared drive communication by all described veneers of bus centralized control; Also comprise logical slot and physical slot position mapping table on the described veneer, be used to indicate the logical slot of all veneers and the mapping relations between the physical slot position, it is characterized in that described veneer comprises following steps in the time of need switching:
The described control veneer of A is revised logical slot and the physical slot position mapping table on all described veneers, and the logical slot of the veneer that the former former head is used number is mapped to the physical slot item of original standby veneer;
The described control veneer of B is revised the inherent logic slot number of being stored on described original primary and backup veneer.
2. the reverse method in the communication system according to claim 1 is characterized in that, described steps A also further comprises following substep:
A 1 described control veneer is revised logical slot and the physical slot position mapping table on this plate, the logical slot of the veneer that the former former head is used number is mapped to the physical slot item of original standby veneer, the logical slot of original standby veneer number is mapped to the physical slot item of the veneer that the former former head uses;
In logical slot that the described control veneer of A2 upgrades this plate and the physical slot position mapping table content synchronization logical slot and physical slot position mapping table to the every other veneer.
3. the reverse method in the communication system according to claim 1 and 2 is characterized in that, described communication system is based on compact interconnection bus of peripheral devices platform.
4. the reverse method in the communication system, described system comprises at least two frames of intercommunication mutually, each frame comprises the polylith veneer, wherein comprises at least one control veneer, is used for carrying out shared drive communication by all described veneers of this frame of bus centralized control; Described control veneer also comprises the channel information table, is used to preserve the mapping relations of logical slot number with the transceive data memory block plot of all veneers in the frame, it is characterized in that described control veneer comprises following steps in the time of need switching:
D carries out total line traffic control and switches, and former main with control veneer release bus control right, former standby control veneer is taken over described bus control right;
E updates stored in described former main with the channel information table on control veneer and the described former standby control veneer, with the described former main transceive data memory block plot that number is mapped to described former standby control veneer with the logical slot of controlling veneer;
F forbids described former main with controlling veneer to each equipment veneer distribution receive path.
5. the reverse method in the communication system according to claim 4 is characterized in that, when the veneer beyond the control veneer in the system is switched, comprises following steps:
G updates stored in the channel information table on the described control veneer, former main logical slot with veneer number is mapped to the transceive data memory block plot of former standby board;
H upgrades described former main with being used to realize shared drive control of communication command word address information between the bottom layer driving module on veneer and the former standby board;
The described control veneer of I is revised described former main with the inherent logic slot number of storing on veneer and the former standby board.
6. according to the reverse method in claim 4 or the 5 described communication systems, it is characterized in that, before switching, check and whether to switch the primary and backup veneer that relates to, switch if then begin all using.
7. according to the reverse method in claim 4 or the 5 described communication systems, it is characterized in that described communication system is based on compact interconnection bus of peripheral devices platform.
8. according to the reverse method in claim 4 or the 5 described communication systems, it is characterized in that, can communicate by asynchronous transfer mode between the described frame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100444668A CN100342666C (en) | 2004-05-10 | 2004-05-10 | Rearrangement method in communication system |
| PCT/CN2005/000637 WO2005109665A1 (en) | 2004-05-10 | 2005-05-09 | Method to realize single plate reversion in communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100444668A CN100342666C (en) | 2004-05-10 | 2004-05-10 | Rearrangement method in communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1697337A CN1697337A (en) | 2005-11-16 |
| CN100342666C true CN100342666C (en) | 2007-10-10 |
Family
ID=35320528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100444668A Expired - Lifetime CN100342666C (en) | 2004-05-10 | 2004-05-10 | Rearrangement method in communication system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100342666C (en) |
| WO (1) | WO2005109665A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459503C (en) * | 2006-08-25 | 2009-02-04 | 华为技术有限公司 | Method and system of obtaining physical slot number of single board, and type of slot |
| CN101207409B (en) * | 2006-12-21 | 2012-01-04 | 华为技术有限公司 | Method for taking business turns and single board |
| CN101425929B (en) * | 2008-12-01 | 2011-02-09 | 成都市华为赛门铁克科技有限公司 | Board number table allocation method, device and system |
| CN103220373B (en) * | 2012-01-19 | 2018-05-04 | 中兴通讯股份有限公司 | A kind of distributed logic address exchanges method, apparatus and equipment with physical address |
| KR20180041898A (en) * | 2016-10-17 | 2018-04-25 | 에스케이하이닉스 주식회사 | Memory system and operating method of memory system |
| CN106603303A (en) * | 2016-12-30 | 2017-04-26 | 杭州迪普科技股份有限公司 | Cloud aggregation board card switching method and device |
| CN107124316B (en) * | 2017-05-23 | 2019-10-11 | 烽火通信科技股份有限公司 | Hardware based quick switching action implementation method in a kind of data communications equipment |
| CN111049566B (en) * | 2019-11-20 | 2022-03-08 | 中国航空工业集团公司西安航空计算技术研究所 | Information transfer method and airborne LRM module |
| CN111478947B (en) * | 2020-03-20 | 2023-02-17 | 珠海高凌信息科技股份有限公司 | Method and system for real-time synchronization of main control board and standby control board |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321004A (en) * | 2000-04-25 | 2001-11-07 | 华为技术有限公司 | Method and equipment for swapping active with standby switches |
| JP2002247017A (en) * | 2001-02-20 | 2002-08-30 | Yamatake Building Systems Co Ltd | Communication line switching device |
| US20030212927A1 (en) * | 2002-05-08 | 2003-11-13 | Navar Venu Gopal | Fault-protection mechanism for protecting multi-protocol-label switching (MPLS) capability within a distributed processor router operating in an MPLS network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW542961B (en) * | 2000-12-29 | 2003-07-21 | Chunghwa Telecom Co Ltd | Fault tolerance system for memory sharing by multiple buses |
-
2004
- 2004-05-10 CN CNB2004100444668A patent/CN100342666C/en not_active Expired - Lifetime
-
2005
- 2005-05-09 WO PCT/CN2005/000637 patent/WO2005109665A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321004A (en) * | 2000-04-25 | 2001-11-07 | 华为技术有限公司 | Method and equipment for swapping active with standby switches |
| JP2002247017A (en) * | 2001-02-20 | 2002-08-30 | Yamatake Building Systems Co Ltd | Communication line switching device |
| US20030212927A1 (en) * | 2002-05-08 | 2003-11-13 | Navar Venu Gopal | Fault-protection mechanism for protecting multi-protocol-label switching (MPLS) capability within a distributed processor router operating in an MPLS network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1697337A (en) | 2005-11-16 |
| WO2005109665A1 (en) | 2005-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI233018B (en) | Multi-port high-speed serial fabric interconnect chip in a meshed configuration | |
| US7835376B2 (en) | Communication device, communication system, and LAG management table management method used therefor | |
| CN102160328B (en) | Central controller for coordinating multicast message transmissions in distributed virtual network switch environment | |
| DE112011102415B4 (en) | Register access in a distributed virtual bridge environment | |
| JP4763791B2 (en) | Optimized synchronization of MAC address tables in network interconnect devices | |
| CN101102305A (en) | Method and system for managing network information processing | |
| CN100342666C (en) | Rearrangement method in communication system | |
| US7289513B1 (en) | Switching fabric port mapping in large scale redundant switches | |
| JP2002540701A (en) | An interconnect architecture that manages many low-bandwidth connections over high-bandwidth links | |
| CN1964285A (en) | A master control device with double CPU and realization method | |
| CN107294760A (en) | Node administration system, node administration method and embodied on computer readable storage device | |
| CN1937782B (en) | Frame device and its message transmitting method | |
| CN102326358A (en) | Method, device of cluster system extension and cluster system | |
| CN101394301A (en) | Micro general hardware platform system, apparatus for telecommunication and computer, and communication method thereof | |
| CN101013984A (en) | Wireless controller equipment and method of realizing the same | |
| CN108471390A (en) | The reorientation method of service message straddle processing system and service message | |
| JPH1027147A (en) | Server address management system | |
| CN101247663B (en) | Considerable routing system and its forwarding table generation method | |
| CN1964286B (en) | A master control device with double CPU | |
| CN101242252B (en) | Method for realizing double-link redundancy backup of network equipment by utilizing Combo interface | |
| CN100502365C (en) | Interplate communicating method | |
| KR100592873B1 (en) | Method for Managing Forwarding Table of Network Processor according to Address Learning in the Linecard Processor composing of Multiple Network Processors and Multiplexing/Demultiplexing Module | |
| CN103004157A (en) | Interface register method and device for network device to join cluster system | |
| CN206332674U (en) | A kind of Ethernet switch wiring board | |
| CN1307421A (en) | Switching route system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071010 |