CN105340226B

CN105340226B - The method and device thereof of the main preparation system switching of dynamic routing equipment

Info

Publication number: CN105340226B
Application number: CN201480036222.7A
Authority: CN
Inventors: 汪子梅; 彭肃家
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2018-11-16
Anticipated expiration: 2034-06-30
Also published as: WO2016000107A1; CN105340226A

Abstract

This application discloses the method and device thereof of the main preparation system of dynamic routing equipment switching.Wherein, the method includes：Before active-standby switch, the standby system of the dynamic routing equipment obtains control information, neighbor state and LSA mark；When carrying out active-standby switch, the standby system is in the preset time that the main system last time apart from dynamic routing equipment sends the first message, according to the neighbor state to the second message of all neighbours' routing device active transmissions, so that neighbours' routing device and the dynamic routing equipment maintain adjacency state；The standby system, which is identified according to the LSA to neighbours' routing device, learns LSA information, and carries out routing update according to the LSA information.Through the above scheme, it can realize that routing is not interrupted in active-standby switch.

Description

The method and device thereof of the main preparation system switching of dynamic routing equipment

【Technical field】

This application involves network communication field, method more particularly to the main preparation system switching of dynamic routing equipment and its Device.

【Background technique】

The backup of neighbor state and routing iinformation is not present between the main preparation system of existing dynamic routing equipment.Work as dynamic routing Device fails and when carrying out main preparation system switching, neighbours' routing device of the dynamic routing equipment is due to perceiving the dynamic Routing device breaks down and actively exits neighborhood, and deletes all routing iinformations by neighbor learning.Meanwhile this is dynamic State routing device equally can neighborhood between its neighbours' routing device interrupt, and arrived in main system by neighbor learning Routing iinformation is deleted, and due to the standby system not backup to neighbor state and routing iinformation, is caused during active-standby switch The routing iinformation of dynamic routing equipment is lost completely.After active-standby switch completion, the dynamic routing equipment and its neighbours road Renegotiated by equipment establish neighborhood and, both sides again respectively carry out route learning recapture routing iinformation.

Therefore, during active-standby switch, dynamic routing equipment and its neighbours' routing device will appear long period road By losing, i.e., routing is interrupted, and then uplink and downlink business is caused to be interrupted because of route querying failure.

【Summary of the invention】

The application provide dynamic routing equipment main preparation system switching method and device thereof, can in active-standby switch, It can be realized routing not interrupt.

The application first aspect provides a kind of method of the main preparation system switching of dynamic routing equipment, and the dynamic routing is set The standby mode operation with main preparation system, including：Before active-standby switch, the standby system of the dynamic routing equipment obtains control letter Breath, neighbor state and connection status declaring LSA mark, wherein the neighbor state includes at least one and the dynamic routing Equipment currently has the identification information of neighbours' routing device of syntople, and the control information is set for the dynamic routing Negotiation standby, between neighbours' routing device is adjacent, and the LSA identifies LSA information for identification；It is described when carrying out active-standby switch Standby system is in the preset time that the main system last time apart from the dynamic routing equipment sends the first message, according to the neighbours State is to the second message of all neighbours' routing device active transmissions, so that neighbours' routing device and the dynamic routing Equipment maintains adjacency state, wherein first message, the second message are used to that dynamic routing equipment, neighbours' routing is maintained to set Adjacency state between standby；The standby system is identified according to the LSA to neighbours' routing device study LSA information, and according to The LSA information carries out routing update.

With reference to first aspect, in the first possible embodiment of first aspect, the standby system is marked according to the LSA Know information and learn LSA information to neighbours' routing device, and routing update is carried out according to the LSA information and includes：It is described standby System is identified according to the LSA, is sent connection status to neighbours' routing device and is requested link state request packet, so that the neighbours road Link state update packet is updated by device replied connection status corresponding with LSA mark；The standby system receives the link state update packet, root Connection status database LSDB is established according to the link state update packet, and sends confirming electrical connection status LSACK to neighbours' routing device Message, to prompt LSA update to terminate；The standby system completes router-level topology according to the LSDB, updates routing and topology information.

The first possible embodiment with reference to first aspect, in second of possible embodiment of first aspect, institute It states standby system to be identified according to the LSA, sending connection status request link state request packet to neighbours' routing device includes：It is described standby System is identified according to the LSA, sends link state request packet to neighbours' routing device, and be information load by neighbor state transition State；The standby system receives the link state update packet, establishes connection status database LSDB according to the link state update packet, and to described Neighbours' routing device sends confirming electrical connection status LSACK message：The standby system receives the link state update packet, according to described Link state update packet establishes LSDB, and sends LSACK message to neighbours' routing device, and be complete by the neighbor state transition Adjacency state.

With reference to first aspect or the first or second kind possible embodiment of first aspect, the third in first aspect can In energy embodiment, the standby system of the dynamic routing equipment obtains control information, neighbor state and connection status declaring LSA mark Knowledge includes：The standby system of the dynamic routing equipment obtains control information, neighbor state, the LSA mark that main system is backed up in realtime.

With reference to first aspect or first aspect first to any possible embodiment of third, the 4th of first aspect the In kind possible embodiment, the standby system, which is identified according to the LSA to neighbours' routing device, learns LSA information, and root Carrying out routing update later according to the LSA information further includes：The standby system is as new main system, to the master as new standby system The control information of the dynamic routing equipment, neighbor state and LSA are identified at present for system backup.

With reference to first aspect or first to fourth any possible embodiment of first aspect, the 5th of first aspect the In kind possible embodiment, further include：When main system breaks down or main system is upgraded, active-standby switch is executed.

The application second aspect provides a kind of standby system of dynamic routing equipment, and the dynamic routing equipment is with main preparation system Mode operation, the standby system of the dynamic routing equipment includes receiving module, sending module and processing module, the reception mould Block is used for before active-standby switch, obtains control information, neighbor state and connection status declaring LSA mark, wherein the neighbours State includes the identification information that at least one currently has neighbours' routing device of syntople with the routing device, the control Negotiation of the information processed between the dynamic routing equipment and neighbours' routing device is adjacent, and LSA believes the LSA mark for identification Breath；The sending module is used for when carrying out active-standby switch, and the standby system is in the dynamic routing equipment main system In the secondary preset time for sending the first message, the neighbor state obtained according to the receiving module is set to all neighbours' routings Standby the second message of active transmission, so that neighbours' routing device and the dynamic routing equipment maintain adjacency state, wherein institute State the first message, the second message is used to maintain the adjacency state between the dynamic routing equipment and neighbours' routing device；It is described Processing module is used to be identified according to the LSA that the receiving module obtains to neighbours' routing device study LSA information, and according to The LSA information carries out routing update.

In conjunction with second aspect, in the first possible embodiment of second aspect, the processing module is used for according to institute The LSA for stating receiving module acquisition, which is identified, learns LSA information to neighbours' routing device, and carries out road according to the LSA information It is specially by update：The LSA mark obtained according to the receiving module sends connection status request to neighbours' routing device Link state request packet, so that neighbours' routing device, which replys connection status corresponding with LSA mark, updates link state update packet；Receive institute Link state update packet is stated, connection status database LSDB is established according to the link state update packet, and send and connect to neighbours' routing device State confirmation LSACK message, to prompt LSA update to terminate；Router-level topology is completed according to the LSDB, updates routing and topology letter Breath.

In conjunction with the first possible embodiment of second aspect, in second of possible embodiment of second aspect, place The LSA that reason module is used to be obtained according to the receiving module is identified, and is sent connection status to neighbours' routing device and is requested LSR Message receives the link state update packet, establishes connection status database LSDB according to the link state update packet, and set to neighbours routing Preparation send confirming electrical connection status LSACK message to be more specifically：The LSA mark obtained according to the receiving module, to the neighbours Routing device sends link state request packet, and is information stress state by neighbor state transition；The link state update packet is received, according to described Link state update packet establishes LSDB, and sends LSACK message to neighbours' routing device, and be complete by the neighbor state transition Adjacency state.

In conjunction with second aspect or the first or second kind possible embodiment of second aspect, the third in second aspect can In energy embodiment, the receiving module is specifically used for obtaining control information, the neighbor state, LSA mark that main system is backed up in realtime Know.

In conjunction with second aspect or second aspect first to any possible embodiment of third, the 4th of second aspect the In kind possible embodiment, the processing module is also used to identify according to the LSA to neighbours' routing device study LSA Information, and after carrying out routing update according to the LSA information, the standby system is determined as new main system, to as newly standby The main system of system backs up the control information of the dynamic routing equipment, neighbor state and LSA mark at present.

In conjunction with second aspect or first to fourth any possible embodiment of second aspect, the 5th of second aspect the In kind possible embodiment, when main system breaks down or main system is upgraded, standby system executes active-standby switch.

The application third aspect provides a kind of standby system of dynamic routing equipment, and the dynamic routing equipment is with main preparation system Mode operation, the standby system of the dynamic routing equipment includes processor and transmitter, the transmitter be used for it is described There is dynamic routing equipment neighbours' routing device of syntople to send information；The processor is used for：Before active-standby switch, Obtain control information, neighbor state and connection status declaring LSA mark, wherein the neighbor state includes at least one and institute Dynamic routing equipment is stated currently and has the identification information of neighbours' routing device of syntople, the control information is for described dynamic Negotiation between state routing device and neighbours' routing device is adjacent, and the LSA identifies LSA information for identification；Carrying out active and standby cut When changing, in the preset time that the main system last time apart from the dynamic routing equipment sends the first message, according to the neighbours State makes the transmitter to the second message of all neighbours' routing device active transmissions so that neighbours' routing device with The dynamic routing equipment maintains adjacency state, wherein first message, the second message are used to maintain the dynamic routing Adjacency state between equipment and neighbours' routing device；It is identified according to the LSA to neighbours' routing device and learns LSA information, And routing update is carried out according to the LSA information.

It further include receiver, for receiving in the first possible embodiment of the third aspect in conjunction with the third aspect State the information of neighbours' routing device；The processor, which is also used to be identified according to the LSA to neighbours' routing device, learns LSA Information, and routing update is carried out according to the LSA information and is specially：It is identified according to the LSA, makes transmitter to the neighbours road Connection status is sent by equipment and requests link state request packet, so that neighbours' routing device replys connection corresponding with LSA mark State updates link state update packet；Connection status database LSDB is established according to the link state update packet that the receiver receives, and is made Transmitter sends confirming electrical connection status LSACK message to neighbours' routing device, to prompt LSA update to terminate；According to described LSDB completes router-level topology, updates routing and topology information.

In conjunction with the first possible embodiment of the third aspect, in second of possible embodiment of the third aspect, institute Processor is stated for identifying according to the LSA, transmitter is made to send connection status request LSR report to neighbours' routing device Text establishes connection status database LSDB according to the link state update packet that the receiver receives, and makes transmitter to the neighbours road Confirming electrical connection status LSACK message is sent by equipment to be more specifically：It is identified according to the LSA, makes transmitter to the neighbours road Link state request packet is sent by equipment, and is information stress state by neighbor state transition；Described in being received according to the receiver Link state update packet establishes LSDB, and so that transmitter is sent LSACK message to neighbours' routing device, and the neighbor state is become It moves to completely abut against state.

In conjunction with the third aspect or the first or second kind possible embodiment of the third aspect, the third in the third aspect can In energy embodiment, the processor is also used to obtain control information, neighbor state, the LSA mark that main system is backed up in realtime.

In conjunction with the third aspect or the third aspect first to any possible embodiment of third, the 4th of the third aspect the In kind possible embodiment, the processor is also used to identify according to the LSA to neighbours' routing device study LSA letter Breath, and after carrying out routing update according to the LSA information, the standby system is determined as new main system, is to as newly standby The main system of system backs up the control information of the dynamic routing equipment, neighbor state and LSA mark at present.

In conjunction with the third aspect or first to fourth any possible embodiment of the third aspect, the 5th of the third aspect the In kind possible embodiment, when main system breaks down or main system is upgraded, standby system executes active-standby switch.

The application fourth aspect provides a kind of dynamic routing equipment, including main system and standby system, wherein the main system For being identified to the standby system backup control information, neighbor state and connection status declaring LSA before active-standby switch； The standby system is as described above for system.

Above scheme dynamic routing equipment is in active-standby switch, standby the second message of system elder generation active transmission, so that neighbours road Syntople is maintained by equipment and the dynamic routing equipment, that is, realizes the neighbour of neighbours' routing device Yu the dynamic routing equipment room It occupies relationship not interrupt, while dynamic routing equipment is identified before active-standby switch to standby system backup LSA, relative to LSA information, The information content of LSA mark is small, and the standby system of the dynamic routing equipment is identified according to the LSA of backup to neighbours in active-standby switch Routing device learns LSA information, so that complete LSA information is obtained to carry out routing update, when realizing main preparation system switching Quick reparation to syntople, and the case where routing is interrupted is avoided, and in such a way that above-mentioned half backup half learns, dynamic Routing device only back up a small amount of information can be realized routing do not interrupt.

【Detailed description of the invention】

Fig. 1 is the flow chart of one embodiment of method of the main preparation system switching of the application dynamic routing equipment；

Fig. 2 is the part-structure signal of the dynamic routing equipment network where before active-standby switch for the method shown in Fig. 1 that executes Figure；

Fig. 3 is the part-structure signal of the dynamic routing equipment network where after active-standby switch for the method shown in Fig. 1 that executes Figure；

Fig. 4 is the flow chart of another embodiment of method of the main preparation system switching of the application dynamic routing equipment；

Fig. 5 is the structural schematic diagram of one embodiment of standby system of the application dynamic routing equipment；

Fig. 6 is the structural schematic diagram of another embodiment of standby system of the application dynamic routing equipment.

【Specific embodiment】

In being described below, for illustration and not for limitation, propose such as specific system structure, interface, technology it The detail of class, so as to provide a thorough understanding of the present application.However, it will be clear to one skilled in the art that there is no these specific The application also may be implemented in the other embodiment of details.In other situations, omit to well-known device, circuit with And the detailed description of method, so as not to obscure the description of the present application with unnecessary details.

It is one embodiment of method of the main preparation system switching of the application dynamic routing equipment to Fig. 3, Fig. 1 refering to fig. 1 Flow chart, Fig. 2 are the part-structure signals of the dynamic routing equipment network where before active-standby switch for the method shown in Fig. 1 that executes Figure, Fig. 3 are the partial structure diagrams of the dynamic routing equipment network where after active-standby switch for the method shown in Fig. 1 that executes.

In present embodiment, the method is executed by dynamic routing equipment 110, the net where dynamic routing equipment 110 In network, dynamic routing equipment 110 and at least one neighbours' routing device 220 establish syntople.Wherein, the dynamic routing equipment 110 include main system 111 and standby system 112, the main preparation system with the mode operation of main preparation system, i.e. dynamic routing equipment 110 For two of dynamic routing equipment 110 can mutual backup control system, for example, two control mainboards, in order in main system 111 break down or when main system 111 upgrades, standby 112 adapter tube main system 111 of system.This method includes：

101：Before active-standby switch, the standby system of the dynamic routing equipment obtains control information, neighbor state and company Connect state declaration (English：Link-State Advertisement, referred to as：LSA it) identifies, wherein the neighbor state includes At least one currently has the identification information of neighbours' routing device of syntople, the control letter with the dynamic routing equipment Negotiation of the breath between the dynamic routing equipment, neighbours' routing device is adjacent, and the LSA identifies LSA information for identification.

Dynamic routing equipment can as automatically set up the routing table of oneself in the application, and can be according to practical feelings The variation of condition is in time adjusted the routing device of routing iinformation.For example, before active-standby switch, the master of dynamic routing equipment When system detection is to newly-increased neighbours' routing device, neighbours' routing device is increased newly with this and is held consultation adjoining, and it is new to automatically generate this Increase neighborhood, the corresponding LSA information of neighbours' routing device.

Specifically, control information may include the information such as the IP address of configuration information, interface message, neighbours' routing device, dynamic The standby system 112 of routing device 110 realizes the configurations of dynamic routing equipment according to configuration information, and standby system 112 is according to connecing The information realizations such as the IP address of message breath, neighbours' routing device and neighbours' routing device are negotiated to establish or maintain to abut.

For example, user matches confidence by man-machine interface input dynamic routing equipment 110 before active-standby switch occurs Breath or dynamic routing equipment 110 directly acquire and are pre-stored in local configuration information, and are issued, dynamic routing equipment 110 Main system 111 and standby system 112 receive the configuration information issued, to guarantee that dynamic routing equipment 110 can be according to matching Confidence breath is configured.Also, the main system 111 of dynamic routing equipment 110 is by current neighbor state, LSA is identified and it He controls information such as interface message and backups in standby system 112.Alternatively, main system 111 first receives the configuration information issued, it will The configuration information and other backup informations are backuped to together in standby system 112.Wherein, LSA, which is identified as, can identify the LSA letter The data of breath, such as the ID or title etc. of LSA information, main system 111 is obtained from the current LSA information of dynamic routing device 110 Its ID or name is taken to be referred to as the LSA mark of the LSA information.Neighbor state includes all in current network topology and dynamic road By equipment 110 currently with the identification information such as ID of neighbours' routing device 120 etc. of syntople.

102：When carrying out active-standby switch, the standby system sent first in the main system last time apart from dynamic routing equipment In the preset time of message, according to the neighbor state to the second message of all neighbours' routing device active transmissions, so that Neighbours' routing device and the dynamic routing equipment maintain adjacency state, wherein first message, the second message are used Adjacency state between maintenance dynamic routing equipment, neighbours' routing device.

When main system 111 operates normally, main system 111 and neighbours' routing device 120 establish neighborhood, and carry out letter Breath interaction.If main system 111 breaks down or upgraded, active-standby switch is executed, at this point, the control of standby system 112 Face needs the control plane information of adapter tube main system 111 immediately, and the neighborhood of main system 111 and neighbours' routing device 120 It need to be switched in standby system 112.

Specifically, present embodiment is ospf (English with dynamic routing equipment 110：Open Shortest Path First, referred to as：OSPF) for routing device：According to OSPL agreement, the neighbor state packet of routing device Include three kinds：1, state, hereinafter also referred to Full state are completely abutted against, i.e., has carried out LSA information between discovery neighborhood and neighbours Interaction；2, information stress state, hereinafter also referred to Loading state, i.e. discovery neighbours and the friendship for carrying out LSA information Mutually；3, original state, hereinafter also referred to Down state, i.e., do not find neighbours.When operating normally, dynamic routing equipment 110 Main system 111 can be periodically the hello with the transmission of neighbours' routing device 120 2_way of syntople to neighbours' routing device Message, to maintain backfence bidirectional relationship.When neighbours' routing device 120 does not receive the hello of 2_way within a preset time Message, then it is assumed that syntople interrupts, and the neighbor state of neighbours' routing device 120 becomes Down state from Full state.Into When row active-standby switch, standby system 112 carries out dynamic routing equipment 110 according to acquisition control information realization adapter tube main system 111 Control, and in the preset time of hello packet for being 2_way apart from the first message of 111 last time of main system transmission, actively To all neighbours' routing devices 120 send the second message i.e. also be 2_way hello packet so that in network with dynamic routing There is equipment 110 neighbor state of neighbours' routing device 120 of syntople to be maintained Full state, i.e. neighbours' routing device Adjacency state, the main system 111 and neighbours' routing device of dynamic routing equipment 110 are maintained between 120 and dynamic routing equipment 110 On neighborhood successful switch to standby system 112 between 120.

It is understood that the first, second message can according to the agreement between dynamic routing equipment and neighbours' routing device and Specific setting, generally, the first, second message are the message of same type, example as above, dynamic routing equipment and neighbours' routing device Between by hello packet maintain syntople, i.e. the first, second message is hello packet.

103：The standby system, which is identified according to the LSA to neighbours' routing device, learns LSA information, and according to described LSA information carries out routing update.

For example, do not have specific LSA information due to there was only LSA mark at this time for system 112, therefore dynamic routing equipment 110 neighborhood is set as Loading state.Standby system 112 sends LSA mark to neighbours' routing device 120, so that neighbours road It is identified from equipment 120 according to the LSA to standby system 112 and sends corresponding LSA information, realize the study of LSA information.Standby system 112 establish connection status database (English according to the LSA information that neighbours' routing device 120 returns：Link State Data Base, referred to as：LSDB), at this point, completing neighborhood reparation, dynamic routing equipment between dynamic routing equipment, neighbours' routing device 110 neighborhood is set as Full state.Also, the LSA information that standby system 112 is returned according to neighbours' routing device 120, uses SPF algorithm calculates the path of each purpose network, realizes routing update.

Referring to Fig. 4, Fig. 4 is the stream of another embodiment of method of the main preparation system switching of the application dynamic routing equipment Cheng Tu.In present embodiment, the method is executed as the dynamic routing equipment as described in embodiment above.This method includes：

401：Before active-standby switch, the standby system of the dynamic routing equipment obtains control information, neighbor state and LSA Mark, wherein the neighbor state includes the neighbours road that at least one currently has syntople with the dynamic routing equipment By the identification information of equipment, negotiation of the control information between the dynamic routing equipment, neighbours' routing device is adjacent, institute State LSA mark LSA information for identification.

402：When carrying out active-standby switch, the standby system is in the preset time for sending the first message apart from main system last time It is interior, according to the neighbor state to the second message of all neighbours' routing device active transmissions, so that neighbours routing is set It is standby to maintain adjacency state with the dynamic routing equipment, wherein first message, the second message are used to maintain dynamic routing Adjacency state between equipment, neighbours' routing device.

Above-mentioned 401, corresponding 101,102 as in embodiment above of 402 concrete modes, therefore details are not described herein.

403：Standby system is identified according to the LSA, sends connection status request (English to neighbours' routing device： Link State Request, referred to as：LSR) message, so that neighbours' routing device reply is corresponding with LSA mark Connection status updates (English：Link State Update, referred to as：LSU) message.

Continue by taking OSPL routing device as an example.General neighbours' establishment process divides syntople to establish, specifies routing device (English：Designated Router, referred to as：DR)/back up specified routing device (English：Backup Designated Router, referred to as：BDR) election, routing device discovery, routing device selection and routing iinformation safeguard several processes.In this programme Syntople is established and DR/BDR election directly according to the synchronizing information of backup and sends the hello packet of 2_way, such as above 201, it describes in 202.The process of routing device discovery is also LSDB synchronization process, including link data description (English： Data Description, referred to as：DD) interactive and LSA study, DD interaction are that LSA mark updates synchronizing process, current standby system The LSA mark for having backed up former master, that is, do not need DD interactive process.It is set so only needing to be identified according to LSA at this time to neighbours' routing Standby study LSA information, forms the independent complete LSDB of oneself.So being identified actively for system according to the LSA of backup at this time Link state request packet is sent to neighbours, that is, neighbours' routing device, and neighbor state is transitted towards Loading state.

404：The standby system receives the link state update packet, establishes LSDB according to the link state update packet, and to the neighbours road Confirming electrical connection status (English is sent by equipment：Link State Acknowledment, referred to as：LSACK) message, with prompt LSA update terminates.

The neighborhood of neighbours' routing device will be considered that it is just due to having been at Full state after receiving link state request packet Normal LSA renewal process, and normally reply LSA and update message.The standby system of dynamic routing equipment receives neighbours' routing device LSA updates message, and updates the LSDB of local terminal, and can reply LSACK message simultaneously, confirms that this LSA renewal process terminates. After the completion of all LSA information learnings, the LSDB of dynamic routing equipment, which is rebuild, to be completed, and dynamic routing equipment, neighbours' routing are set Neighborhood reparation is completed between standby.At this point, the neighborhood of dynamic routing equipment is set as Full state.

405：The standby system completes router-level topology according to the LSDB, updates routing and topology information.

After dynamic routing equipment rebuilds complete independent LSDB, content of the standby system according to LSDB is independently calculated with SPF Method calculates the path of each purpose network, and path is stored in routing table, realizes and updates routing and topology information.

406：The standby system backs up the dynamic routing at present as new main system, to the main system as new standby system Control information, neighbor state and the LSA mark of equipment.

After completing routing update, topology is stable, and having completely taken over main system at this time for system is new main system, Former main system is then used as new standby system, new main system to new standby system backup at present the neighbor state of the dynamic routing equipment, LSA mark and control information such as interface message, and keep realtime uniform.

It is understood that above- mentioned information backup is excellent to guarantee that network topology will not change after main preparation system switching It is selected as backing up in realtime, i.e., if configuration information is updated, real time down is to main preparation system if dynamic routing equipment, or in real time It is handed down to main system, then is backed up in realtime by main system to standby system.If neighbor state, LSA mark or interface message become Change, then main system is backed up in realtime into standby system.Certainly, the dynamic routing equipment more stable in other links and interface message In, the mode of timed backup can also be used in dynamic routing equipment, is not limited thereto.

Also, the application dynamic routing equipment specifically by taking OSPF routing device as an example but is not limited to OSPF routing device, The application is equally applicable to the similar routing device of other Routing Protocols, such as Border Gateway Protocol (English：Border Gateway Protocol, abbreviation BGP), tag distribution protocol (English：Label Distribution Protocol, referred to as：LDP), more Protocol label exchange (English：Multi-Protocol Label Switching, referred to as：MPLS) etc..

Present embodiment is backed up by only backing up to partial information before active-standby switch, and especially using incomplete LSA information and the mode for only backing up LSA mark lower the requirement to standby system resource to reduce backup information amount.Meanwhile When carrying out active-standby switch, standby system sends the second message to neighbours' routing device before timing time-out, to guarantee that neighbours' routing is set It is standby that syntople is maintained with dynamic routing equipment, realize not interrupting for during active-standby switch neighborhood.Meanwhile standby system System, which is identified according to LSA to neighbours' routing device, to be learnt to LSA information, thus obtain complete LSA information to carry out routing update, Network topology is consistent after switching when realizing main preparation system switching to the reparation of syntople and guarantee main preparation system.This implementation Mode using above-mentioned half backup half learn by the way of, be not necessarily to the change agreement of neighbours' routing device in active-standby switch process, only Back up a small amount of information can be realized routing do not interrupt.

Referring to Fig. 5, Fig. 5 is the structural schematic diagram of one embodiment of standby system of the application dynamic routing equipment.This Shen Dynamic routing equipment please is such as the dynamic routing equipment in embodiment above.In the network where dynamic routing equipment, Dynamic routing equipment and at least one neighbours' routing device establish syntople (as shown in Figure 2,3).Also, the dynamic routing is set The standby mode operation with main preparation system, i.e. dynamic routing equipment include main system and standby system, which is dynamic routing Two of equipment can mutual backup control system, for example, two control mainboards, in order to breaking down in main system or When main system upgrading, standby system adapter tube main system.In present embodiment, the standby system 500 of dynamic routing equipment includes Receiving module 510, sending module 520 and processing module 530.

Receiving module 510 is used for before active-standby switch, obtains control information, neighbor state and LSA mark, wherein institute Stating neighbor state includes the identification information that at least one currently has neighbours' routing device of syntople with the routing device, Negotiation of the control information between the dynamic routing equipment and neighbours' routing device is adjacent, and the LSA mark is for knowing Other LSA information.

Specifically, control information may include configuration information, interface message, the neighbours' routing device i.e. IP of neighbours' routing device The information such as location, the standby system 500 of dynamic routing equipment realize the configurations of the dynamic routing equipment according to configuration information, standby system System 500 is negotiated to establish or be maintained according to the information realizations such as interface message, the IP address of neighbours' routing device and neighbours' routing device It is adjacent.

For example, user inputs the configuration information of dynamic routing equipment by man-machine interface before active-standby switch occurs, or Person's dynamic routing equipment, which directly acquires, is pre-stored in local configuration information, and is issued, the main system of dynamic routing equipment and Standby system 500 receives the configuration information issued, to guarantee that dynamic routing equipment can be configured according to configuration information, and And neighbor state, LSA mark and other control information such as interface messages are backuped to standby system by the main system of dynamic routing equipment In system 500.Alternatively, main system first receives the configuration information issued, the configuration information and other backup informations are backuped to together In standby system 500.Wherein, LSA mark is the data for distinguishing different LSA information, such as the ID or title of LSA information Deng.Neighbor state includes all neighbours' routings currently with the dynamic routing equipment with syntople in current network topology The identification information of equipment such as ID etc..

Sending module 520 is used for when carrying out active-standby switch, and the standby system 500 is in the principal series apart from dynamic routing equipment Last time of uniting sends in the preset time of the first message, and the neighbor state obtained according to the receiving module 510 is to all neighbours The second message of routing device active transmission is occupied, so that neighbours' routing device and the dynamic routing equipment maintain adjacent shape State, wherein first message, the second message are used to maintain the adjoining between the dynamic routing equipment and neighbours' routing device State.

When main system operates normally, main system and neighbours' routing device establish neighborhood, row information of going forward side by side interaction.Such as Fruit main system breaks down or is upgraded, then executes active-standby switch, at this point, the control plane of standby system needs to take over master immediately The control plane information of system, and main system and the neighborhood of neighbours' routing device also need to be switched in standby system.

Specifically, present embodiment is by taking dynamic routing equipment is dynamic OSPF routing device as an example：According to OSPL agreement, dynamic The neighbor state of routing device includes three kinds：1, the friendship of LSA information has been carried out between Full state, i.e. discovery neighborhood and neighbours Mutually；2, Loading state, i.e. discovery neighbours and the interaction for carrying out LSA information；3, Down state does not find neighbours.? When normal operation, the main system of dynamic routing equipment can be periodically that there is neighbours' routing of syntople to set to neighbours' routing device Preparation send the hello packet of 2_way, to maintain backfence bidirectional relationship.When neighbours' routing device does not have within a preset time Receive the hello packet of 2_way, then it is assumed that syntople interrupts, and the neighbor state of neighbours' routing device is become from Full state Down state.When carrying out active-standby switch, standby system 500 realizes that adapter tube main system is controlled according to the configuration information issued, And the sending module 520 of standby system 500 was sending the hello packet that the first message is 2_way apart from main system last time In preset time, actively sending the second message i.e. to all neighbours' routing devices is also the hello packet of 2_way, so that network In with dynamic routing equipment there is the neighbor state of neighbours' routing device of syntople to be maintained Full state, i.e., neighbours route Equipment and the application dynamic routing equipment room maintain adjacency state, between the main system and neighbours' routing device of dynamic routing equipment On neighborhood successful switch to standby system 500.

Processing module 530 learns for being identified according to the LSA that the receiving module 510 obtains to neighbours' routing device LSA information, and routing update is carried out according to the LSA information.

For example, not having specific LSA information, therefore the dynamic routing is set due to there was only LSA mark at this time for system 500 Standby neighborhood is set as Loading state.The processing module 530 of standby system 500 sends LSA mark to neighbours' routing device, So that neighbours' routing device, which is identified according to the LSA to the processing module 530 of standby system 500, sends corresponding LSA information, realize The study of LSA information.The processing module 530 of standby system 500 establishes LSDB according to the LSA information that neighbours' routing device returns, this When, neighborhood reparation is completed between dynamic routing equipment, neighbours' routing device, the neighborhood of dynamic routing equipment is set as Full State.Also, the LSA information that the processing module 530 of standby system 500 is returned according to neighbours' routing device, is calculated using SPF algorithm Routing update is realized in the path of each purpose network out.

In another embodiment of standby system of the application dynamic routing equipment, processing module also particularly useful for：According to institute The LSA mark for stating receiving module acquisition, sends connection status to neighbours' routing device and requests link state request packet, so that the neighbour It occupies routing device and replys connection status update link state update packet corresponding with LSA mark；The link state update packet is received, according to described Link state update packet establishes connection status database LSDB, and sends confirming electrical connection status LSACK message to neighbours' routing device, To prompt LSA update to terminate；Router-level topology is completed according to the LSDB, updates routing and topology information.

Continue by taking OSPL routing device as an example.General neighbours' establishment process divides syntople to establish, DR/BDR is elected, road Several processes are safeguarded by equipment discovery, routing device selection and routing iinformation.Syntople is established in this programme and DR/BDR is selected Lift and directly according to the synchronizing information of backup and send the hello packet of 2_way, as receiving module and sending module it is above-mentioned performed by Content.The process of routing device discovery is also LSDB synchronization process, is learnt including DD is interactive with LSA, DD interaction is LSA mark Know and update synchronizing process, the current LSA mark for the former master of system backup does not need DD interactive process.So only needing at this time It to be identified according to LSA to neighbours' routing device and learn LSA information, form the independent complete LSDB of oneself.So standby at this time The processing module of system actively sends link state request packet to neighbours, that is, neighbours' routing device according to the LSA of backup mark, and by neighbours' shape State is transitted towards Loading state.

The neighborhood of neighbours' routing device will be considered that it is just due to having been at Full state after receiving link state request packet Normal LSA renewal process, and normally reply LSA and update message.The processing module of the standby system of dynamic routing equipment receives neighbour The LSA for occupying routing device updates message, and updates the LSDB of local terminal, and can reply LSACK message simultaneously, confirms this LSA Renewal process terminates.After the completion of all LSA information learnings, the LSDB of dynamic routing equipment, which is rebuild, to be completed, and dynamic routing is set Neighborhood reparation is completed between standby, neighbours' routing device.At this point, the neighborhood of dynamic routing equipment is set as by processing module Full state.

After dynamic routing equipment rebuilds complete independent LSDB, content of the processing module of standby system according to LSDB, solely On the spot calculate the path of each purpose network with SPF algorithm, and path be stored in routing table, realize update routing and Topology information.

Optimally, the processing module of the standby system of the application dynamic routing equipment can also be used to identify according to the LSA Learn LSA information to neighbours' routing device, and after carrying out routing update according to the LSA information, determines the standby system System is used as new main system, backs up the control information of the dynamic routing equipment, neighbours at present to the main system as new standby system State and LSA mark.

For example, topology is stable after completing routing update, it is new main for having completely taken over main system at this time for system System, former main system are then used as new standby system, and the processing module of new main system is to dynamic routing equipment described in new standby system backup Neighbor state, LSA mark and control information such as interface message, and keep realtime uniform.

It is understood that above- mentioned information backup is excellent to guarantee that network topology will not change after main preparation system switching It is selected as backing up in realtime, i.e., if configuration information is updated, real time down is to main preparation system, Huo Zheshi if the dynamic routing equipment When be handed down to main system, then backed up in realtime by main system to standby system.If neighbor state, LSA mark or interface message occur Variation, then main system is backed up in realtime into standby system.Certainly, it is set in the more stable dynamic routing of other links and interface message In standby, which can also be used the mode of timed backup, be not limited thereto.

Also, the application dynamic routing equipment specifically by taking OSPF routing device as an example but is not limited to OSPF routing device, The application is equally applicable to the similar dynamic routing equipment of other Routing Protocols, such as BGP, LDP, MPLS.

Referring to Fig. 6, Fig. 6 is the structural schematic diagram of the standby system a further embodiment of the application dynamic routing equipment.This Dynamic routing equipment in the dynamic routing equipment such as embodiment above of embodiment.Network where dynamic routing equipment In, dynamic routing equipment and at least one neighbours' routing device establish syntople (as shown in Figure 2,3).Also, the dynamic road By equipment with the mode operation of main preparation system, i.e. dynamic routing equipment includes main system and standby system, which is dynamic Two of routing device can mutual backup control system, for example, two control mainboards, in order to break down in main system Or when main system upgrading, standby system adapter tube main system.In present embodiment, the standby system 600 of dynamic routing equipment Including transmitter 610, storage medium 620, processor 630 and bus 640.Transmitter 610, storage medium 620, processor 630 It is connected by bus 640.

Transmitter 610 is used for neighbours' routing device transmission information with the dynamic routing equipment with syntople.

Computer instruction and processor 630 of the storage medium 620 for the execution of storage processor 630 are required when working to be deposited The data of storage.

Processor 630 is used for：

Before active-standby switch, control information, neighbor state and LSA mark are obtained, wherein the neighbor state includes extremely Lacking one currently has the identification information of neighbours' routing device of syntople, the control information with the dynamic routing equipment Adjacent for the negotiation between the dynamic routing equipment and neighbours' routing device, the LSA identifies LSA information for identification；

When carrying out active-standby switch, the preset time of the first message was sent in the main system last time apart from dynamic routing equipment It is interior, make the transmitter 610 to the second message of all neighbours' routing device active transmissions according to the neighbor state, so that Neighbours' routing device and the dynamic routing equipment maintain adjacency state, wherein first message, the second message are used Adjacency state between the maintenance dynamic routing equipment and neighbours' routing device；

It is identified according to the LSA to neighbours' routing device and learns LSA information, and road is carried out according to the LSA information By updating.

Specifically, control information may include configuration information, interface message, the neighbours' routing device i.e. IP of neighbours' routing device The information such as location, the standby system 600 of dynamic routing equipment realize the configurations of the dynamic routing equipment according to configuration information, standby system System 600 is negotiated to establish or be maintained according to the information realizations such as interface message, the IP address of neighbours' routing device and neighbours' routing device It is adjacent.

For example, user inputs the configuration information of dynamic routing equipment by man-machine interface before active-standby switch occurs, or Person's dynamic routing equipment, which directly acquires, is pre-stored in local configuration information, and is issued, the main system of dynamic routing equipment and Standby system 600 receives the configuration information issued, to guarantee that dynamic routing equipment can be configured according to configuration information, and And neighbor state, LSA mark and other control information such as interface messages are backuped to standby system by the main system of dynamic routing equipment In system 600.Alternatively, main system first receives the configuration information issued, the configuration information and other backup informations are backuped to together In standby system 600.Wherein, LSA mark is the data for distinguishing different LSA information, such as the ID or title of LSA information Deng.Neighbor state includes all neighbours' routing devices currently with the routing device with syntople in current network topology Identification information such as ID etc..

Specifically, present embodiment is by taking dynamic routing equipment is dynamic OSPF routing device as an example：According to OSPL agreement, dynamic The neighbor state of routing device includes three kinds：1, the friendship of LSA information has been carried out between Full state, i.e. discovery neighborhood and neighbours Mutually；2, Loading state, i.e. discovery neighbours and the interaction for carrying out LSA information；3, Down state does not find neighbours.? When normal operation, the main system of dynamic routing equipment can be periodically that there is neighbours' routing of syntople to set to neighbours' routing device Preparation send the hello packet of 2_way, to maintain backfence bidirectional relationship.When neighbours' routing device does not have within a preset time Receive the hello packet of 2_way, then it is assumed that syntople interrupts, and the neighbor state of neighbours' routing device is become from Full state Down state.When carrying out active-standby switch, standby system 600 realizes that adapter tube main system is controlled according to the configuration information issued, And the processor 630 of standby system 600 is being the pre- of the hello packet of 2_way apart from the first message of main system last time transmission If in the time, so that transmitter 610 is sent the second message i.e. to all neighbours' routing devices is also the hello packet of 2_way, so that With dynamic routing equipment there is the neighbor state of neighbours' routing device of syntople to be maintained Full state, i.e. neighbours in network Routing device and the application dynamic routing equipment room maintain adjacency state, the main system and neighbours' routing device of dynamic routing equipment Between neighborhood successful switch to standby system 600 on.

Due to there was only LSA mark at this time for system 600, there is not specific LSA information, therefore the neighbours of dynamic routing equipment Relationship is set as Loading state.The processor 630 of standby system 600 makes transmitter 610 send LSA mark to neighbours' routing device, So that neighbours' routing device, which is identified according to the LSA to the processor 630 of standby system 600, sends corresponding LSA information, LSA is realized The study of information.Processor 630 establishes LSDB according to the LSA information that neighbours' routing device returns, at this point, routing device, neighbours Neighborhood reparation is completed between routing device, the neighborhood of routing device is set as Full state.Also, 630 basis of processor The LSA information that neighbours' routing device returns calculates the path of each purpose network using SPF algorithm, realizes routing update.

Optionally, the standby system of routing device further includes receiver 650, for receiving the letter of neighbours' routing device Breath.

Processor 630 is also used to：

It is identified according to the LSA, so that transmitter is sent link state request packet to neighbours' routing device, so that the neighbours road By device replied link state update packet corresponding with LSA mark；

LSDB is established according to the link state update packet that the receiver receives, and sets transmitter to neighbours routing Preparation send LSACK message, to prompt LSA update to terminate；

Router-level topology is completed according to the LSDB, updates routing and topology information.

Continue by taking OSPL routing device as an example.General neighbours' establishment process divides syntople to establish, DR/BDR is elected, road Several processes are safeguarded by equipment discovery, routing device selection and routing iinformation.Syntople is established in this programme and DR/BDR is selected It lifts and directly according to the synchronizing information of backup and sends the hello packet of 2_way, the content as performed by before processor 630.Routing The process of equipment discovery is also LSDB synchronization process, is learnt including DD is interactive with LSA, and DD interaction is that LSA mark update is same Step process, current standby system 600 have backed up the LSA mark of former master, that is, have not needed DD interactive process.So only needing basis at this time LSA, which is identified to neighbours' routing device, learns LSA information, forms the independent complete LSDB of oneself.So at this time for system 600 Processor 630 link state request packet is actively sent to neighbours, that is, neighbours' routing device according to the LSA of backup mark, and by neighbor state It is transitted towards Loading state.

The neighborhood of neighbours' routing device will be considered that it is just due to having been at Full state after receiving link state request packet Normal LSA renewal process, and normally reply LSA and update message.The receiver 650 of the standby system 600 of dynamic routing equipment receives LSA to neighbours' routing device updates message, and the LSA that processor 630 is received according to receiver 650 updates message to update this The LSDB at end, and transmitter 610 is made to send LSACK message to neighbours' routing device simultaneously, confirm this LSA renewal process knot Beam.After the completion of all LSA information learnings, the LSDB of dynamic routing equipment, which is rebuild, to be completed, dynamic routing equipment, neighbours' routing Neighborhood reparation is completed between equipment.At this point, the neighborhood of dynamic routing equipment is set as Full state by processor 630.

After dynamic routing equipment rebuilds complete independent LSDB, content of the processor 630 according to LSDB is independently used SPF algorithm calculates the path of each purpose network, and path is stored in routing table, realizes and updates routing and topology letter Breath.

Optionally, processor 630 is also used to identify according to the LSA to neighbours' routing device study LSA information, And according to the LSA information carry out routing update after, determine the standby system as new main system, to as new standby system Main system backs up control information, neighbor state and the LSA mark of the dynamic routing equipment

After completing routing update, topology is stable, and having completely taken over main system at this time for system 600 is new principal series System, former main system are then used as new standby system, and the processor 630 of new main system 700 is set to dynamic routing described in new standby system backup Standby neighbor state, LSA mark and control information such as interface message, and keep realtime uniform.

It is understood that above- mentioned information backup is excellent to guarantee that network topology will not change after main preparation system switching It is selected as backing up in realtime, i.e., if configuration information is updated, real time down gives active and standby system if the dynamic routing equipment, or in real time It is handed down to main system, then is backed up in realtime by main system to standby system and is united.If neighbor state, LSA mark or interface message occur Variation, then main system is backed up in realtime into standby system.Certainly, the routing device more stable in other links and interface message In, the mode of timed backup can also be used in dynamic routing equipment, is not limited thereto.

The application also provides a kind of embodiment of dynamic routing equipment, the dynamic routing equipment as shown in Figure 2,3 and on The dynamic routing equipment of face embodiment, including main system and standby system.Wherein, the main system be used for active-standby switch it Before, it is identified to the control information of the standby system backup, neighbor state and LSA, specifically as described in embodiment above Main system, standby system are specially the standby system as described in embodiment above.

Above scheme especially uses not backup LSA completely by only backing up to partial information before active-standby switch Information and the mode for only backing up LSA mark lower the requirement to standby system resource to reduce backup information amount.Meanwhile it carrying out When active-standby switch, standby system sends the second message to neighbours' routing device before timing time-out, with guarantee neighbours' routing device with Dynamic routing equipment maintains syntople, realizes not interrupting for during active-standby switch neighborhood.Meanwhile standby system root It identifies according to LSA to neighbours' routing device and learns to LSA information, to obtain complete LSA information to carry out routing update, realize To the reparation of syntople and guarantee the consistent of network topology after main preparation system switching when main preparation system switching.Present embodiment Using above-mentioned half backup half learn by the way of, supported in active-standby switch process without the change agreement of neighbours' routing device, only Be backed up a small amount of information can be realized routing do not interrupt.

In several embodiments provided herein, it should be understood that disclosed system, device and method can To realize by another way.For example, device embodiments described above are only schematical, for example, the mould The division of block or unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple Unit or assembly can be combined or can be integrated into another system, or some features can be ignored or not executed.It is another Point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, device or The indirect coupling or communication connection of unit can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.Some or all of unit therein can be selected to realize present embodiment scheme according to the actual needs Purpose.

In addition, each functional unit in each embodiment of the application can integrate in one processing unit, it can also To be that each unit physically exists alone, can also be integrated in one unit with two or more units.It is above-mentioned integrated Unit both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the application The all or part of the steps of embodiment the method.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk Etc. the various media that can store program code.

Claims

1. the method that a kind of main preparation system of dynamic routing equipment switches, which is characterized in that the dynamic routing equipment is with active and standby The mode operation of system, including：

Before active-standby switch, the standby system of the dynamic routing equipment obtains control information, neighbor state and connection status a surname Accuse LSA mark, wherein the neighbor state includes the neighbour that at least one currently has syntople with the dynamic routing equipment The identification information of routing device is occupied, negotiation of the control information between the dynamic routing equipment, neighbours' routing device is adjacent It connects, the LSA identifies LSA information for identification；

When carrying out active-standby switch, the standby system sent the first message in the main system last time apart from the dynamic routing equipment Preset time in, according to the neighbor state to the second message of all neighbours' routing device active transmissions, so that described Neighbours' routing device and the dynamic routing equipment maintain adjacency state, wherein first message, the second message are used to tie up Hold the adjacency state between dynamic routing equipment, neighbours' routing device；

The standby system, which is identified according to the LSA to neighbours' routing device, learns LSA information, and according to the LSA information Carry out routing update.

2. the method according to claim 1, wherein the standby system is identified according to the LSA to the neighbours Routing device learns LSA information, and carries out routing update according to the LSA information and include：

The standby system is identified according to the LSA, is sent connection status to neighbours' routing device and is requested link state request packet, so that Neighbours' routing device replys connection status corresponding with LSA mark and updates link state update packet；

The standby system receives the link state update packet, establishes connection status database LSDB according to the link state update packet, and to described Neighbours' routing device sends confirming electrical connection status LSACK message, to prompt LSA update to terminate；

The standby system completes router-level topology according to the LSDB, updates routing and topology information.

3. according to the method described in claim 2, it is characterized in that, the standby system is identified according to the LSA, to the neighbours Routing device sends connection status request link state request packet：

The standby system is identified according to the LSA, sends link state request packet to neighbours' routing device, and neighbor state is changed For information stress state；

The standby system receives the link state update packet, establishes connection status database LSDB according to the link state update packet, and to described Neighbours' routing device sends confirming electrical connection status LSACK message：

The standby system receives the link state update packet, establishes LSDB according to the link state update packet, and send out to neighbours' routing device LSACK message is sent, and is to completely abut against state by the neighbor state transition.

4. method according to any one of claims 1 to 3, which is characterized in that the standby system of the dynamic routing equipment obtains It takes to control information, neighbor state and connection status declaring LSA and identify and includes：

The standby system of the dynamic routing equipment obtains control information, neighbor state, the LSA mark that main system is backed up in realtime.

5. method according to any one of claims 1 to 3, which is characterized in that the standby system according to the LSA identify to Neighbours' routing device learns LSA information, and carries out routing update later according to the LSA information and further include：

The standby system backs up the control of the dynamic routing equipment at present to the main system as new standby system as new main system Information, neighbor state and LSA mark processed.

6. method according to any one of claims 1 to 3, which is characterized in that further include：

When main system breaks down or main system is upgraded, active-standby switch is executed.

7. a kind of standby system of dynamic routing equipment, which is characterized in that the dynamic routing equipment is transported with the mode of main preparation system Row, the standby system of the dynamic routing equipment include receiving module, sending module and processing module,

The receiving module is used for before active-standby switch, obtains control information, neighbor state and connection status declaring LSA mark Know, wherein the neighbor state includes neighbours' routing that at least one currently has syntople with the dynamic routing equipment The identification information of equipment, negotiation of the control information between the dynamic routing equipment and neighbours' routing device is adjacent, institute State LSA mark LSA information for identification；

The sending module is used for when carrying out active-standby switch, and the standby system is in the main system apart from the dynamic routing equipment Last time sends in the preset time of the first message, and the neighbor state obtained according to the receiving module is routed to all neighbours The second message of equipment active transmission, so that neighbours' routing device and the dynamic routing equipment maintain adjacency state, wherein First message, the second message are used to maintain the adjacency state between the dynamic routing equipment and neighbours' routing device；

The processing module is used to be identified according to the LSA that the receiving module obtains to neighbours' routing device study LSA letter Breath, and routing update is carried out according to the LSA information.

8. standby system according to claim 7, which is characterized in that

The processing module is used to be identified according to the LSA that the receiving module obtains to neighbours' routing device study LSA letter Breath, and routing update is carried out according to the LSA information and is specially：

The LSA mark obtained according to the receiving module, sends connection status to neighbours' routing device and requests link state request packet, So that neighbours' routing device, which replys connection status corresponding with LSA mark, updates link state update packet；

The link state update packet is received, connection status database LSDB is established according to the link state update packet, and set to neighbours routing Preparation send confirming electrical connection status LSACK message, to prompt LSA update to terminate；

9. standby system according to claim 8, which is characterized in that the processing module according to the receiving module for obtaining The LSA mark taken, sends connection status to neighbours' routing device and requests link state request packet, the link state update packet is received, according to institute It states link state update packet and establishes connection status database LSDB, and send confirming electrical connection status LSACK message to neighbours' routing device More specifically：

The LSA mark obtained according to the receiving module, sends link state request packet to neighbours' routing device, and by neighbor state Transition are information stress state；

The link state update packet is received, LSDB is established according to the link state update packet, and send LSACK report to neighbours' routing device Text, and be to completely abut against state by the neighbor state transition.

10. standby system according to any one of claims 7 to 9, which is characterized in that the receiving module is specifically used for obtaining Control information that main system is backed up in realtime, neighbor state, LSA mark.

11. standby system according to any one of claims 7 to 9, which is characterized in that

The processing module is also used to identify according to the LSA to neighbours' routing device study LSA information, and according to institute State LSA information carry out routing update after, determine the standby system as new main system, it is standby to the main system as new standby system The control information of the dynamic routing equipment, neighbor state and LSA are identified part at present.

12. standby system according to any one of claims 7 to 9, which is characterized in that when main system failure or principal series When system is upgraded, standby system executes active-standby switch.

13. a kind of standby system of dynamic routing equipment, which is characterized in that the dynamic routing equipment is transported with the mode of main preparation system Row, the standby system of the dynamic routing equipment include processor and transmitter,

The transmitter is used for neighbours' routing device transmission information with the dynamic routing equipment with syntople；

The processor is used for：

Before active-standby switch, control information, neighbor state and connection status declaring LSA mark are obtained, wherein neighbours' shape State includes the identification information that at least one currently has neighbours' routing device of syntople with the dynamic routing equipment, described Information is controlled for the negotiation adjoining between the dynamic routing equipment and neighbours' routing device, the LSA identifies LSA for identification Information；

When carrying out active-standby switch, the preset time of the first message was sent in the main system last time apart from the dynamic routing equipment It is interior, make the transmitter to the second message of all neighbours' routing device active transmissions according to the neighbor state, so that institute It states neighbours' routing device and the dynamic routing equipment maintains adjacency state, wherein first message, the second message are used to Maintain the adjacency state between the dynamic routing equipment and neighbours' routing device；

It is identified according to the LSA to neighbours' routing device and learns LSA information, and routed more according to the LSA information Newly.

14. standby system according to claim 13, which is characterized in that further include receiver, for receiving the neighbours road By the information of equipment；

The processor, which is used to be identified according to the LSA to neighbours' routing device, learns LSA information, and according to the LSA Information carries out routing update：

It is identified according to the LSA, so that transmitter is sent connection status request link state request packet to neighbours' routing device, so that institute It states neighbours' routing device and replys connection status update link state update packet corresponding with LSA mark；

Connection status database LSDB is established according to the link state update packet that the receiver receives, and makes transmitter to described Neighbours' routing device sends confirming electrical connection status LSACK message, to prompt LSA update to terminate；

15. standby system according to claim 14, which is characterized in that the processor is used to be identified according to the LSA, makes Transmitter sends connection status to neighbours' routing device and requests link state request packet, the link state update packet received according to the receiver Connection status database LSDB is established, and transmitter is made to send confirming electrical connection status LSACK message to neighbours' routing device More specifically：

It is identified according to the LSA, so that transmitter is sent link state request packet to neighbours' routing device, and be by neighbor state transition Information stress state；

LSDB is established according to the link state update packet that the receiver receives, and sends out transmitter to neighbours' routing device LSACK message is sent, and is to completely abut against state by the neighbor state transition.

16. 3 to 15 described in any item standby systems according to claim 1, which is characterized in that the processor is also used to obtain master Control information that system is backed up in realtime, neighbor state, LSA mark.

17. 3 to 15 described in any item standby systems according to claim 1, which is characterized in that the processor is also used in basis The LSA identify to neighbours' routing device learn LSA information, and according to the LSA information carry out routing update after, really The fixed standby system backs up the control of the dynamic routing equipment at present to the main system as new standby system as new main system Information, neighbor state and LSA mark.

18. 3 to 15 described in any item standby systems according to claim 1, which is characterized in that as main system failure or master When system is upgraded, standby system executes active-standby switch.

19. a kind of dynamic routing equipment, which is characterized in that including main system and standby system, wherein

The main system is used for before active-standby switch, to the standby system backup control information, neighbor state and connection shape State declares LSA mark；

The standby system is such as described in any item standby systems of claim 7 to 18 above.