CN100571153C - The method and the device of the public route change notification in the network equipment - Google Patents
The method and the device of the public route change notification in the network equipment Download PDFInfo
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- CN100571153C CN100571153C CNB200410044462XA CN200410044462A CN100571153C CN 100571153 C CN100571153 C CN 100571153C CN B200410044462X A CNB200410044462X A CN B200410044462XA CN 200410044462 A CN200410044462 A CN 200410044462A CN 100571153 C CN100571153 C CN 100571153C
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Abstract
The invention discloses the method and the device of the public route change notification in a kind of network equipment, this method comprises: attribute information and route related information and the route variation processing scheme of obtaining each personality modnies; Attribute information and route related information according to each personality modnies that obtains are set up personality modnies routing iinformation chained list; Press predetermined way and check personality modnies routing iinformation chained list, the route that changes is handled by the route variation processing scheme that the corresponding characteristics module provides; Revise personality modnies routing iinformation chained list according to the situation of change of personality modnies route.This device is made up of public module and at least one personality modnies.Utilize the present invention, can carry out route change notification and processing simply, efficiently, also can realize the backup of route simultaneously, guarantee the normal operation of network system.
Description
Technical field
The present invention relates to network communications technology field, be specifically related to the method and the device of the public route change notification in a kind of network equipment.
Background technology
Along with the continuous expansion of computer network scale, the fast development of large-scale internet (as Internet), route technology becomes key component gradually in network technology, and router also becomes the most important network equipment thereupon.Router is operated in the 3rd layer in OSI (Open System Interconnection) model, i.e. network layer.Router utilizes the network address (being the IP address) on " logic " of network layer definition to distinguish different networks, realizes the interconnection and the isolation of network, keeps the independence of each network.
In router, switch device on the middle and senior level, the routing iinformation of acquiring by Routing Protocol, except directly being used with the tutorial message forwarding by IP (procotol) forwarding module, also usually used, as tactful route of GRE (generic route encapsulation), QACL (traffic classification and access control) etc. by some personality modnies.Because topology of networks is dynamic change, cause routing iinformation also to change thereupon, therefore,, just need notify each personality modnies timely and effectively with route change information in order to guarantee the correct transmission of the network information.
At present, industry adopts following two kinds of routes to change informing mechanism usually:
1, is responsible for notifying each correlation module by IP forward module.IP forward module is preserved all each the personality modnies information that need notify, just notifies each personality modnies in the mode of message successively in case find the route variation, and its flow process as shown in Figure 1.
Because each personality modnies is only relevant with certain routing iinformation, therefore, can receive many invalid notices concerning each personality modnies; And, whether after each personality modnies is received the route change notification, need inspection with own relevant, this checking process needs the regular hour, when having a large amount of routes to change generation sometime, can not get in time handling causing message queue to block owing to the route change message.
2, each self-timing of each personality modnies goes initiatively to check whether the route with own relevant changes, in case change, then carries out relevant action, and its flow process as shown in Figure 2.
In this mechanism, it no longer is to be notified by IP forward module that route changes, but initiatively go to check by each personality modnies oneself, but owing to there is not unified mechanism, make each module have a cover to finish the code of similar functions respectively, cause size of code big, correspondingly maintenance workload is also big, does not meet the principle of " reusable, modularization " in the Code Design.
Summary of the invention
The objective of the invention is to overcome the above-mentioned shortcoming of prior art, the method and the device of the public route change notification in a kind of network equipment be provided, with simply, effectively with the route change information real-time informing to relevant device, further improve system effectiveness.
The objective of the invention is to be achieved through the following technical solutions:
The method of the public route change notification in a kind of network equipment is characterized in that, comprising:
A, the attribute information that obtains each personality modnies and route related information and route change processing scheme;
B, set up personality modnies routing iinformation chained list according to the attribute information and the route related information of described each personality modnies that obtains;
C, check described personality modnies routing iinformation chained list by predetermined way, the route that the route that changes is provided by the corresponding characteristics module changes processing scheme and handles;
D, revise described personality modnies routing iinformation chained list according to the situation of change of personality modnies route.
Described steps A comprises:
A1, provide unified registration interface to each personality modnies;
A2, each personality modnies are registered by described registration interface, and log-on message is provided;
A3, obtain the attribute information of each personality modnies and routing iinformation and route according to described log-on message and change processing scheme.
The attribute information of described each personality modnies comprises: module No., submodule number and module priority.
Described personality modnies routing iinformation chained list comprises: the routing iinformation chain of at least one personality modnies, described routing iinformation chain comprise all information nodes relevant with route of described personality modnies.
Described routing iinformation chain comprises: unidirectional chain and endless chain.
Described routing iinformation chain sorts according to described module priority.
Described step C comprises:
The routing iinformation chain of described each personality modnies correspondence is checked in C1, timing in turn;
C2, check each node in the described routing iinformation chain one by one.
Described step D comprises:
D1, provide the uniform data interface to each personality modnies;
D2, each personality modnies are safeguarded described personality modnies routing iinformation chained list by described data-interface.
Described step D2 comprises:
Set up node index chained list;
Described personality modnies obtains the node information that changes according to the network change situation, and the described node information that changes comprises newly-increased node and deletion node;
Described newly-increased node is added in described personality modnies routing iinformation chained list and the node index chained list by described data-interface;
Search the position of described deletion node in described personality modnies routing iinformation chained list by described data-interface according to described node index chained list, and this locational node of deletion;
Delete the index of the node of deletion described in described node index chained list correspondence.
Described method also comprises: set up and safeguard the route backup information chained list.
The present invention also provides a kind of device of realizing said method, comprising:
Public module and at least one personality modnies, wherein,
Described personality modnies comprises:
The node information deriving means is used to obtain the change information of routing node;
Route changes operating means, is used to provide the route of corresponding described personality modnies to change the concrete operations of processing scheme;
Described public module comprises:
Registration interface is used to obtain the attribute information of described personality modnies and routing iinformation and route and changes processing scheme;
The routing iinformation storage device is used to store the attribute information and the routing iinformation of the described personality modnies that obtains;
The routing iinformation attending device, the change information that is used for the routing node that obtains according to described node information deriving means is revised the routing iinformation of the personality modnies of described routing iinformation memory device stores;
Route changes processing unit, is used to store the attribute information and the route variation processing scheme of the described personality modnies that obtains;
Testing fixture is used to check the routing iinformation of described routing iinformation memory device stores, and notifies described route to change processing unit and call the route variation processing scheme corresponding with the routing iinformation that changes.
Described routing iinformation attending device comprises:
Data-interface, the change information that is used for the routing node that obtains according to described node information deriving means control that described routing iinformation storage device adds or deletion routing node information;
Indexing unit is used for the site position according to the deletion of the described routing iinformation storage device of the command search of described data-interface needs.
Described personality modnies also comprises: the route backup device is used to set up route backup and changes operating means by described route described route backup is safeguarded.
By above technical scheme provided by the invention as can be seen, by unified routing iinformation storage and retrieval mode interface, unified registration interface are provided for each personality modnies, and the route inspection targetedly of implementing unification for each personality modnies, preserved each personality modnies effectively and changed relevant data with route, improved the efficient of route change notification and processing, also can realize the backup of route simultaneously, guarantee the normal operation of network system.
Description of drawings
Fig. 1 is the flow chart that route change information adopts IP module informing mechanism in the prior art;
Fig. 2 is that route change information adopts the initiatively flow chart of checking mechanism of personality modnies in the prior art;
Fig. 3 is the structural representation of apparatus of the present invention;
Fig. 4 is the flow chart of the inventive method;
Fig. 5 is the realization flow figure that personality modnies is registered in the inventive method;
Fig. 6 is that node adds process chart in the inventive method;
Fig. 7 is a node deletion process chart in the inventive method;
Fig. 8 is the flow chart of retrieval specific node in the inventive method.
Embodiment
Core of the present invention is to change informing mechanism for each personality modnies provides a public effective route, by unified routing iinformation data storage and retrieval mode interface, unified registration interface are provided for each personality modnies, and implement the unified variation of route targetedly for each personality modnies and check, routing iinformation to the different qualities module is unified maintenance and management, to reduce the code of different qualities module similar functions, improve the efficient of route change notification; And, guarantee the normal operation of network by setting up, safeguard route backup information.
In order to make those skilled in the art person understand the present invention better, the present invention is described in further detail below in conjunction with drawings and embodiments.
With reference to Fig. 3, Fig. 3 shows the structure of apparatus of the present invention:
Apparatus of the present invention are made up of public module 31 and personality modnies 32.Wherein,
Node information deriving means 321 is used to obtain the change information of routing node;
Route changes operating means 322, is used to provide the route of corresponding personality modnies 32 to change the concrete operations of processing scheme;
(1) module attribute information comprises module No., submodule number, module precedence information;
(2) change relevant data message with route.
Routing iinformation storage device 312, be used to store the attribute information and the route related information of the personality modnies that obtains, these information will be stored according to the height of the priority of personality modnies, to guarantee changing the high personality modnies of priority check priority when checking carrying out route.
Data-interface 313, the change information control routing iinformation storage device 312 that is used for the routing node that obtains according to node information deriving means 321 adds or deletion routing node information.
Route changes processing unit 316, and the attribute information and the route that are used to store the personality modnies that obtains change processing scheme, are that index is stored with module attribute information.
The course of work of public module 31 and personality modnies 32 is described respectively below:
During public module 31 initialization, start timer 317, when timer time then, the personality modnies that starts 315 pairs of registrations of testing fixture carries out route inspection, promptly check the route related information of routing iinformation storage device 312 storages, if find that certain node route is unreachable or when changing, then notify route to change route that processing unit 316 calls storage and change processing scheme and handle should personality modnies.For different personality modnies, when the route variation took place, the processing that it need be done may be different, and therefore concrete processing operation also need change operating means 322 by the route in the personality modnies and finish.
During personality modnies 32 initialization, need register by the registration interface 311 that public module provides, provide necessary log-on message to public module, comprise: the attribute information of personality modnies 32 and route related information and route change processing scheme.When network topology structure changes, correspondingly need to increase or delete the part node information of this personality modnies, at this moment, need node information deriving means 321 to collect the change information of routing nodes, then the routing node information that data-interface 313 control routing iinformation storage devices 312 by public module add or deletion has changed.When deleting, also need indexing unit 314 to finish the retrieval location of deletion node, with all routing iinformations of maintenance characteristics module accurately and efficiently.
Mentioning the processing that route changes in the personality modnies is above specifically finished by route variation operating means 322, if this personality modnies does not have the business of route backup aspect, then route changes the node that 322 of operating means are concerned about that the generation route changes, and do necessary processing in this inside modules according to the information of this node, concrete contents processing is by the data cases decision of personality modnies according to self.If this personality modnies has the business of route backup aspect, then route variation operating means 322, also will be operated route back-up device 323 when this inside modules is done necessary processing accordingly according to the node information that the route variation takes place.If the routing condition of this node is unreachable, it is invalid to need effective marker with this node be changed to, and the effective marker of the node that in the route backup priority and route can be reached is changed to effectively.Otherwise, when the route recovery of the node of the high priority in the routing iinformation that public module is safeguarded for can reach the time, be with its effective marker bit recovery, and the effective marker of part node of purchasing is invalid.
Such as, concerning QACL (traffic classification and access control) module, if the stream (can determine according to each characteristic item in the bag of receiving) that the user disposes certain feature in this module carries out the route processing of certain regulation.When public module detects the route of this regulation when unreachable, the QACL module is just with the processing mode of this kind stream then change discard processing into.If the user has also disposed the route stand-by processing to this kind stream simultaneously, then the QACL module is received after the inaccessible message of the route of usefulness, can check earlier whether route stand-by is available, if route stand-by can be used, then the route processing mode of this stream is set to route stand-by.If all route stand-bies are all unavailable, then also still be set to abandon.If in using the process of certain route stand-by, receive the route change message that the higher route of priority can be used again, then will revert to the processing mode of limit priority route in the current available route to the processing of this stream.
In order to make present technique field personnel understand the present invention better, the inventive method is elaborated below with reference to Fig. 4.
With reference to Fig. 4, Fig. 4 has described the detailed process of the inventive method, may further comprise the steps:
Step 401: public module provides unified registration interface for each personality modnies.In order to receive the registration of each personality modnies, and the log-on message of each personality modnies managed, public module has defined the overall array of a fixed length (this length may be defined as the maximum personality modnies numbers that can support), and the organization definition of each element of this array is as follows:
typedef?struct?tagRtCh_RegInfo{
/ * arrangement Registering modules position and identification Registering modules routing iinformation */
ULONG ulUsed; This position of/* whether occupied */
ULONG ulModuleID; / * module I D*/
ULONG?ulSubID；
ULONG ulPriority; / * module priority */
Data that/* Registering modules will be registered and function */
Void*pstDataStart; / * storage data message initial pointer the * relevant with the route variation/
ULONG ulTravelLen; Remember when/* is used for repeating query to have taken turns to which */
RtChNodePro pProFunc; The processing function pointer * of/* pair of node relevant with route/
}RtCh_RegInfo_S；
When the registration of certain personality modnies, need provide following two category informations in the above organization definition: 1. module information comprises module No., submodule number, module precedence information; 2. change relevant data message with route, comprise being used for the initial pointer of the storage characteristics module data relevant, the processing function pointer of the personality modnies when route changes with route; Public module will be kept in the overall array according to the height of the module priority log-on message with each personality modnies, thereby guarantee to change the high personality modnies of priority check priority when checking carrying out route.
The concrete form of registering the interface that uses for each personality modnies is as follows:
ULONG?RouteChange_Register(ULONG?ulModuleID，ULONG?ulSubID，ULONG?ulPriority，void*pstDataStart，RtChNodePro?pProFunc)
The realization flow of this interface as shown in Figure 5.
Step 402: each personality modnies is registered by registration interface, and log-on message is provided.
Step 403: attribute information and route related information and the route variation processing scheme of obtaining each personality modnies according to log-on message.Wherein, the attribute information of each personality modnies comprises: module No., submodule number and module priority.
Step 404: set up and maintenance characteristics module routing iinformation chained list.
Attribute information and route related information according to each personality modnies that obtains are set up personality modnies routing iinformation chained list, this chained list comprises: the routing iinformation chain of at least one personality modnies, described routing iinformation chain comprise all information nodes relevant with route of personality modnies.The organizational form of this chained list is as follows:
(backup is according to priority arranged from high to low with the subchain L2 at data node place)
Wherein, what store among the chain L1 is the information nodes relevant with route of certain personality modnies, is safeguarded by public module.Chain L2 is used for the situation of route backup, is safeguarded by personality modnies.If this personality modnies does not need route backup, then can be without chain L2.Public module provides unified interface, is used for the data that each personality modnies is relevant with route and preserves with the form of L1 chain, simultaneously the L1 chain is set up the HASH index, searches fast with convenient.Wherein, chain L1 and chain L2 can use single-track link table, also can use annular chain meter.
The data structure of node is as follows in the chained list:
typedef?struct?tagRtCh_Node{
SLL_NODE_S?stSLNode；
ULONG ulEntryIndex; But the index * of the corresponding data relevant of the influenced module of/* unique identification with routing iinformation/
ULONG ulIpAddr; Purpose IP address * in the/* routing iinformation/
ULONG ulNextHop; / * is used for preserving the next hop information of existing route information, though to prevent checking out that purpose IP can reach, in fact next jumping changes.With up-to-date routing iinformation and the comparison of originally preserving information, with determine route whether change */
USHORT usVTID; / * other information * relevant with routing iinformation/
USHORT usPriority; / * be used for mulitpath backup */
ULONG ulValid; / * be used to indicate the effective * of this node/
Struct tagRtCh_Node*pHashBucketNext; / * be used to set up the HASH index * of chained list/
Struct tagRtCh_Node*pEqualNext; / * be used to handle the situation * of mulitpath backup/
}RtCh_Node_S；
Maintenance to personality modnies routing iinformation chained list need be revised this personality modnies routing iinformation chained list according to the situation of change of personality modnies route.
The data relevant with route of each personality modnies have been mentioned in the front, need be organized into the mode of foregoing L1 chained list, and route backup also needs to be organized into the mode of L2 chained list if desired, in order to search conveniently, also will set up the HASH concordance list simultaneously.Public module provides following three data operation-interfaces for this reason:
1. the chained list pDataList that node is added the access customer appointment, and add among the corresponding HASH concordance list ppHashIndexByAddr:
ULONG?RtCh_DataAttach(SLL_S*pDataList，RtCh_Node_S**ppHashIndexByAddr，RtCh_Node_S*pNode)
The realization flow of this interface as shown in Figure 6.
2. node is removed from the HASH concordance list ppHashIndexByAddr of chained list pDataList and correspondence:
RtCh_Node_S*RtCh_DataDetach(SLL_S*pDataList，RtCh_Node_S**ppHashIndexByAddr，ULONG?ulIndex)
The realization flow of this interface as shown in Figure 7.
3. from chained list, seek the interface of specific node:
ULONG?RtCh_GetNodeWithIndex(RtCh_Node_S**ppHashIndexByAddr，ULONG?ulIndex，RtCh_Node_S**pNode)
Can in personality modnies, find the data that when route changes, need operate on it easily by the ulIndex parameter in the function interface, and the keyword that will use when also being the position of calculating in the HASH table of this value.
The realization flow of this interface as shown in Figure 8.
Step 405: press predetermined way and check personality modnies routing iinformation chained list, the route that changes is handled by the route variation processing scheme that the corresponding characteristics module provides.Described predetermined way comprises: regular check mode and message informing test mode.
Take turns starting inspection to each Registering modules.During inspection, the inspection function that the route of calling this module changes is implemented to check to the L1 chained list one by one.If find that certain node route is unreachable or when changing the processing function that calls the registration of individual features module handle.Concerning the different qualities module, when the route variation took place, the processing that it need be done was different, and concrete contents processing is determined that by personality modnies public module is the processing function of direct call feature module registration.
In the process that the regular check route changes,, done the processing of following two aspects especially in order to prevent abnormal conditions:
1. in order to make checking process be unlikely to long to influence other operations in the system, regulation is only checked particular length to each personality modnies.After finishing, each regular check to write down current inspection length, behind the end that is checked through the L1 chained list, with the zero clearing of current check length.
2. in order to prevent at timer interim (promptly certain node being implemented the interim of inspection), last time, the node of checking was deleted, when checking, this to check the length of chained list, if the length of chained list is also shorter then with current inspection length zero clearing than current inspection length, and from the beginning looked into, otherwise will begin to check from the next one that linked list head begins to count to current check length.Certainly, also can adopt other modes,, be used to preserve the next node of this node, when the deleted situation of this node takes place, then get its next one immediately such as special establishment of a mechanism.
The front is mentioned, and after route changes, need be handled by the processing function that public module calls individual features module registration, and concrete contents processing is determined by personality modnies.In this handles function,, also need chained list L2 is safeguarded if when personality modnies has route backup aspect professional.Be specially: if the routing condition of the node that changes is unreachable, it is invalid to need effective marker with this node be changed to, and the effective marker of the node that L2 chained list priority last time and route can be reached is changed to effectively.Otherwise, when the route recovery of the node of the limit priority in the public module notice L1 chained list for can reach the time, be with its effective marker bit recovery, and the effective marker of part node of purchasing is invalid.
Route backup can improve the unfailing performance of network, for example, the strategy route backup will be supported following function: user's collocation strategy is routed under the situation of direct-connected next jumping, can back up to switch to another next jumping of being disposed when next jumps link occurs fault.The user can banish certain and put 2 or many tactful routing rules with different priorities, uses the rule of limit priority under the normal condition, when the pairing link occurs fault of this rule, switches to the rule of time priority.When the regular pairing link of limit priority recovers once more, can switch back from the rule of low priority again, make the taking effect rules of limit priority.
Because personality modnies is few to the demand of route backup at present, therefore the L2 chained list is set up with maintenance and mainly be responsible for by personality modnies, if in fact this demand is also thought public demand, the L2 chained list also can provide interface to personality modnies by public module, safeguard with convenient foundation, and assist to finish the switching of current route and route stand-by by public module.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (13)
1, the method for the public route change notification in a kind of network equipment is characterized in that, described method comprises:
A, the attribute information that obtains each personality modnies and route related information and route change processing scheme;
B, set up personality modnies routing iinformation chained list according to the attribute information and the route related information of described each personality modnies that obtains;
C, check described personality modnies routing iinformation chained list by predetermined way, the route that the route that changes is provided by the corresponding characteristics module changes processing scheme and handles;
D, revise described personality modnies routing iinformation chained list according to the situation of change of personality modnies route.
2, the method for the public route change notification in the network equipment as claimed in claim 1 is characterized in that, described steps A comprises:
A1, provide unified registration interface to each personality modnies;
A2, each personality modnies are registered by described registration interface, and log-on message is provided;
A3, obtain the attribute information of each personality modnies and routing iinformation and route according to described log-on message and change processing scheme.
3, the method for the public route change notification in the network equipment as claimed in claim 1 or 2 is characterized in that, the attribute information of described each personality modnies comprises: module No., submodule number and module priority.
4, the method for the public route change notification in the network equipment as claimed in claim 3, it is characterized in that, described personality modnies routing iinformation chained list comprises: the routing iinformation chain of at least one personality modnies, described routing iinformation chain comprise all information nodes relevant with route of described personality modnies.
5, the method for the public route change notification in the network equipment as claimed in claim 4 is characterized in that, described routing iinformation chain comprises: unidirectional chain and endless chain.
As the method for the public route change notification in the claim 4 or the 5 described network equipments, it is characterized in that 6, described routing iinformation chain sorts according to described module priority.
7, the method for the public route change notification in the network equipment as claimed in claim 4 is characterized in that, described step C comprises:
The routing iinformation chain of described each personality modnies correspondence is checked in C1, timing in turn;
C2, check each node in the described routing iinformation chain one by one.
8, as the method for the public route change notification in the claim 4 or the 7 described network equipments, it is characterized in that described step D comprises:
D1, provide the uniform data interface to each personality modnies;
D2, each personality modnies are safeguarded described personality modnies routing iinformation chained list by described data-interface.
9, the method for the public route change notification in the network equipment as claimed in claim 8 is characterized in that, described step D2 comprises:
Set up node index chained list;
Described personality modnies obtains the node information that changes according to the network change situation, and the described node information that changes comprises newly-increased node and deletion node;
Described newly-increased node is added in described personality modnies routing iinformation chained list and the node index chained list by described data-interface;
Search the position of described deletion node in described personality modnies routing iinformation chained list by described data-interface according to described node index chained list, and this locational node of deletion;
Delete the index of the node of deletion described in described node index chained list correspondence.
10, the method for the public route change notification in the network equipment as claimed in claim 1 is characterized in that, also comprises: set up and safeguard the route backup information chained list.
11, the device of the public route change notification in a kind of network equipment is characterized in that, described device comprises: public module and at least one personality modnies, wherein,
Described personality modnies comprises:
The node information deriving means is used to obtain the change information of routing node;
Route changes operating means, is used to provide the route of corresponding described personality modnies to change the concrete operations of processing scheme;
Described public module comprises:
Registration interface is used to obtain the attribute information of described personality modnies and routing iinformation and route and changes processing scheme;
The routing iinformation storage device is used to store the attribute information and the routing iinformation of the described personality modnies that obtains;
The routing iinformation attending device, the change information that is used for the routing node that obtains according to described node information deriving means is revised the routing iinformation of the personality modnies of described routing iinformation memory device stores;
Route changes processing unit, is used to store the attribute information and the route variation processing scheme of the described personality modnies that obtains;
Testing fixture is used to check the routing iinformation of described routing iinformation memory device stores, and notifies described route to change processing unit and call the route variation processing scheme corresponding with the routing iinformation that changes.
12, device as claimed in claim 11 is characterized in that, described routing iinformation attending device comprises:
Data-interface, the change information that is used for the routing node that obtains according to described node information deriving means control that described routing iinformation storage device adds or deletion routing node information;
Indexing unit is used for the site position according to the deletion of the described routing iinformation storage device of the command search of described data-interface needs.
13, as claim 11 or 12 described devices, it is characterized in that described personality modnies also comprises: the route backup device is used to set up route backup and changes operating means by described route described route backup is safeguarded.
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| CNB200410044462XA CN100571153C (en) | 2004-05-10 | 2004-05-10 | The method and the device of the public route change notification in the network equipment |
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| CNB200410044462XA CN100571153C (en) | 2004-05-10 | 2004-05-10 | The method and the device of the public route change notification in the network equipment |
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