CN113746682A - Configuration guarantee method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/082—Configuration setting characterised by the conditions triggering a change of settings the condition being updates or upgrades of network functionality
Abstract
The invention relates to a configuration guarantee method and a configuration guarantee device. Subsequently, when the SDN controller has a need for performing configuration operation on the target device, receiving configuration information to be operated, which is requested by the SDN service, and then reading the configuration information of the target device, which corresponds to the configuration information to be operated, from a database of the SDN controller to compare with the configuration information, so as to determine a corresponding operation to ensure the configuration. In the process, it is no longer necessary for the network device to record a configuration operation and time at the home terminal after receiving a configuration, so that compared with the prior art, the storage requirement of the configuration guarantee on the network device can be reduced, and the method has popularization.
Description
Technical Field
The application belongs to the field of communication, and particularly relates to a configuration guarantee method and device.
Background
In a Software Defined Network (SDN), an SDN controller converts an expected plan for a Network device into a device Configuration, and issues the Configuration to the Network device through a Network Configuration Protocol (Netconf), so that the Network device can work according to the expected plan of the SDN controller. In this process, the network device may have a fault or a restart condition, which may cause the network device to operate incorrectly in configuration, so there is a need to ensure the configuration issued by the SDN controller.
In the prior art, each time an SDN controller issues a configuration, an operation and time are recorded at the home terminal, and each time a network device receives a configuration, an operation and time are also recorded at the home terminal, and then CRC comparison is performed on the two, so that which configurations have an issue failure and need to be issued again can be identified, and the configurations are guaranteed.
However, the SDN controller issues a large number of configurations, and therefore, the above process has a high storage requirement on the network device.
Disclosure of Invention
In view of the above, an object of the present application is to provide a configuration guaranteeing method and apparatus, which can guarantee configuration on the basis of reducing storage requirements on network devices.
The embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a configuration guarantee method, which is applied to an SDN controller, and the method includes: receiving configuration information to be operated in an SDN service configuration request; reading configuration information of the target equipment corresponding to the configuration information to be operated from a database; the configuration information of the target equipment is the configuration information which is issued to the network equipment; comparing the configuration information to be operated with the configuration information of the target equipment to obtain a comparison result; searching a target rule matched with the comparison result from prestored rules; and executing corresponding operation according to the operation mode included by the target rule.
In the process, it is no longer necessary for the network device to record a configuration operation and time at the home terminal after receiving a configuration, so that compared with the prior art, the storage requirement of the configuration guarantee on the network device can be reduced, and the method has popularization.
With reference to the embodiment of the first aspect, in a possible implementation manner, the executing, according to an operation manner included in the target rule, a corresponding operation includes: when the operation mode represents the updated data, updating the configured source corresponding to the configuration information of the target device in the database into SDN; or when the operation mode representation request is wrong, generating error information; or when the operation mode represents and executes the issuing operation, updating the database according to the operation type corresponding to the configuration information to be operated, and issuing an execution command through a Netconf protocol, wherein the execution command represents the execution of the configuration information to be operated.
With reference to the embodiment of the first aspect, in a possible implementation manner, updating the database according to an operation type corresponding to the configuration information to be operated, and issuing an execution command through a Netconf protocol includes: when the operation type is newly added configuration, writing the configuration information to be operated into the database, setting the configuration type of the database as logic newly added and setting the source of the database as SDN; issuing an execution command through the Netconf protocol, wherein the execution command is newly added configuration; or, when the operation type is delete configuration, setting the configuration type of the configuration information of the target device as logic delete; and issuing an execution command through the Netconf protocol, wherein the execution command is configured to be deleted.
With reference to the embodiment of the first aspect, in a possible implementation manner, after the issuing an execution command through the Netconf protocol, the executing a corresponding operation further includes: acquiring the latest change serial number fed back by the target equipment after responding to the execution command; when the operation type is the newly added configuration, setting the issuing result of the configuration information to be operated in the database as successful issuing, and modifying the change serial number of the configuration information to be operated into the latest change serial number; and when the operation type is the deletion configuration, modifying the change sequence number of the configuration information of the target device in the database into the latest change sequence number.
With reference to the embodiment of the first aspect, in a possible implementation manner, the performing corresponding operations further includes: obtaining a notification message fed back by the target device after the target device writes the configuration to be operated into a disk of the target device; when the operation type is the newly added configuration, setting the configuration type of the configuration information to be operated in the database as a physical newly added configuration; and when the operation type is the deletion configuration, deleting the configuration information of which the configuration type is the logic deletion in the database.
With reference to the embodiment of the first aspect, in one possible implementation manner, the method further includes: acquiring an operation type corresponding to the configuration information to be operated; determining a rule type according to the operation type; correspondingly, the searching for the target rule matched with the comparison result from the prestored rules includes: screening out alternative rules which accord with the rule types from rules stored in advance; and searching a target rule matched with the comparison result from the alternative rules.
With reference to the embodiment of the first aspect, in one possible implementation manner, the method further includes: when determining that network equipment with network interruption exists in network equipment in communication connection with the equipment, reading a change sequence number of configuration information stored in the network equipment with the network interruption; and determining the configuration information needing to be retransmitted according to the change sequence number of the configuration information stored in the network equipment with network interruption and the change sequence number corresponding to the configuration information in the database, and issuing the configuration information.
With reference to the embodiment of the first aspect, in one possible implementation manner, the method further includes: when determining that the restarting equipment exists or the configuration information with the lost change sequence number exists in the database, reading the configuration information stored in the network equipment; comparing the read configuration information with all configuration information of the corresponding network equipment stored in the database to obtain a comparison result; searching a target rule matched with the comparison result from prestored rules; and executing corresponding operation according to the operation mode included by the target rule.
With reference to the embodiment of the first aspect, in one possible implementation manner, the method further includes: responding to the acquired control instruction for removing the SDN control; and acquiring configuration information from the database, wherein the source of the configuration information is SDN, and issuing a deletion instruction of the configuration information aiming at the network equipment storing the configuration information.
In a second aspect, an embodiment of the present application provides a configuration assurance device, which is applied to an SDN controller, and the device includes: the device comprises a receiving module, an obtaining module, a comparing module, a matching module and an executing module.
The receiving module is used for receiving the configuration information to be operated in the SDN service configuration request;
the acquisition module is used for reading the configuration information of the target equipment corresponding to the configuration information to be operated from a database; the configuration information of the target equipment is the configuration information which is issued to the network equipment;
the comparison module is used for comparing the configuration information to be operated with the configuration information of the target equipment to obtain a comparison result;
the matching module is used for searching a target rule matched with the comparison result from the prestored rules;
and the execution module is used for executing corresponding operation according to the operation mode included by the target rule.
With reference to the embodiment of the second aspect, in a possible implementation manner, the execution module is configured to, when the operation manner represents update data, update a source of a configuration corresponding to the configuration information of the target device in the database to an SDN; or when the operation mode representation request is wrong, generating error information; or when the operation mode represents and executes the issuing operation, updating the database according to the operation type corresponding to the configuration information to be operated, and issuing an execution command through a Netconf protocol, wherein the execution command represents the execution of the configuration information to be operated.
With reference to the second aspect, in a possible implementation manner, the execution module is configured to, when the operation type is a new configuration, write the configuration information to be operated into the database, set the configuration type of the database as a logic new addition, and set a source of the database as an SDN; issuing an execution command through the Netconf protocol, wherein the execution command is newly added configuration; or, when the operation type is delete configuration, setting the configuration type of the configuration information of the target device as logic delete; and issuing an execution command through the Netconf protocol, wherein the execution command is configured to be deleted.
With reference to the second aspect, in a possible implementation manner, the execution module is further configured to obtain a latest change sequence number fed back by the target network device after responding to the execution command; when the operation type is the newly added configuration, setting the issuing result of the configuration information to be operated in the database as successful issuing, and modifying the change serial number of the configuration information to be operated into the latest change serial number; and when the operation type is the deletion configuration, modifying the change sequence number of the configuration information of the target device in the database into the latest change sequence number.
With reference to the second aspect embodiment, in a possible implementation manner, the execution module is further configured to obtain a notification message fed back by the target device after the to-be-operated configuration is written into a disk of the target device; when the operation type is the newly added configuration, setting the configuration type of the configuration information to be operated in the database as a physical newly added configuration; and when the operation type is the deletion configuration, deleting the configuration information of which the configuration type is the logic deletion in the database.
With reference to the second aspect, in a possible implementation manner, the obtaining module is further configured to obtain an operation type corresponding to the configuration information to be operated; determining a rule type according to the operation type;
correspondingly, the matching module is used for screening out an alternative rule which accords with the rule type from prestored rules; and searching a target rule matched with the comparison result from the alternative rules.
With reference to the second aspect, in a possible implementation manner, the apparatus further includes an account checking module, configured to, when it is determined that a network device with a network interruption exists in network devices in communication connection with the apparatus, read a change sequence number of configuration information stored in the network device with the network interruption exists; and determining the configuration information needing to be retransmitted according to the change sequence number of the configuration information stored in the network equipment with network interruption and the change sequence number corresponding to the configuration information in the database, and issuing the configuration information.
With reference to the embodiment of the second aspect, in a possible implementation manner, the apparatus further includes an account checking module, configured to read configuration information stored in the network device when it is determined that the restart device exists or the configuration information with a missing change sequence number exists in the database; comparing the read configuration information with all configuration information of the corresponding network equipment stored in the database to obtain a comparison result; searching a target rule matched with the comparison result from prestored rules; and executing corresponding operation according to the operation mode included by the target rule.
With reference to the second aspect, in a possible implementation manner, the apparatus further includes a deleting module, configured to respond to the obtained control instruction for characterizing release of the SDN control; and acquiring configuration information from the database, wherein the source of the configuration information is SDN, and issuing a deletion instruction of the configuration information aiming at the network equipment storing the configuration information.
In a third aspect, an embodiment of the present application further provides a network device, including: a memory and a processor, the memory and the processor connected; the memory is used for storing programs; the processor calls a program stored in the memory to perform the method of the first aspect embodiment and/or any possible implementation manner of the first aspect embodiment.
In a fourth aspect, the present application further provides a non-transitory computer-readable storage medium (hereinafter, referred to as a computer-readable storage medium), on which a computer program is stored, where the computer program is executed by a computer to perform the method in the foregoing first aspect and/or any possible implementation manner of the first aspect.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. The foregoing and other objects, features and advantages of the application will be apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be to scale as practical, emphasis instead being placed upon illustrating the subject matter of the present application.
Fig. 1 shows a flowchart of a configuration assurance method provided in an embodiment of the present application.
Fig. 2 shows a block diagram of a configuration assurance device according to an embodiment of the present application.
Fig. 3 shows a schematic structural diagram of a network device according to an embodiment of the present application.
Icon: 100-a network device; 110-a processor; 120-a memory; 400-configuring a guarantee device; 410-a receiving module; 420-an acquisition module; 430-alignment module; 440-a matching module; 450-execution module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, relational terms such as "first," "second," and the like may be used solely in the description herein to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Further, the term "and/or" in the present application is only one kind of association relationship describing the associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.
In addition, the defects (high storage requirements on network devices) existing in the configuration assurance solutions in the prior art are the results obtained after the applicant has practiced and studied carefully, and therefore, the discovery process of the above defects and the solutions proposed in the following embodiments of the present application for the above defects should be considered as contributions of the applicant to the present application.
In order to solve the foregoing problems, embodiments of the present application provide a configuration guaranteeing method and apparatus, which can guarantee configuration on the basis of reducing a storage requirement for a network device.
The technology can be realized by adopting corresponding software, hardware and a combination of software and hardware. The following describes embodiments of the present application in detail.
The following description will be made with respect to a configuration securing method provided in the present application.
Referring to fig. 1, an embodiment of the present application provides a configuration guaranteeing method applied to an SDN controller, which may include the following steps.
Step S110: and receiving configuration information to be operated in the SDN service configuration request.
In the embodiment of the application, when the SDN service has a need to operate a specific configuration according to a service need, an SDN service configuration request may be triggered.
Configuration information to be operated may be included in the SDN service configuration request, and is used to characterize relevant information of the configuration requested by the SDN service (i.e. the configuration to be operated).
The SDN service configuration request may further include an operation type of the current configuration guarantee. Generally, the operation type may include one of an addition configuration and a deletion configuration.
And when the operation type is the new configuration, indicating that the user expects to issue the configuration corresponding to the configuration information to be operated to the corresponding network equipment.
When the operation type is the configuration deletion, the configuration pointed by the configuration information to be operated is expected to be deleted from the corresponding network equipment by the user.
Step S120: and reading the configuration information of the target equipment corresponding to the configuration information to be operated from a database.
It is to be noted that, in the embodiment of the present application, before executing step S120, each time the SDN controller first discovers a certain network device or a certain network device first registers to the SDN controller, the SDN controller reads all configurations and configuration information thereof on the first discovered network device or the first registered network device on the SDN controller, a start time of the network device, and a change sequence number corresponding to each configuration using a Netconf protocol.
The network device records the current starting time when starting each time, and uses the current starting time to cover the previous starting time, so that each network device only has one starting time.
And the change sequence number corresponding to the configuration is used for representing one configuration operation. Of course, the change numbers corresponding to two different operations before and after the operation are different, and the change number of the next operation is greater than the change number of the previous operation. It should be noted that if a configuration operation operates multiple configurations at the same time, the multiple operated configurations all correspond to the same change sequence number, and the original change sequence number is covered by the change sequence number, so that each network device only has one change sequence number.
Generally, all configurations of a network device discovered by the SDN controller for the first time or registered on the SDN controller for the first time are basic configurations that are issued into a database of the network device when the network device is shipped from a factory. Of course, in some cases, the configuration acquired by the SDN controller at this time may also be a configuration already configured to the network device by other network devices, and at this time, the configuration is also default to be the basic configuration of the network device.
After acquiring the basic configuration of each network device, the SDN controller may classify the basic configuration, and store the classified basic configuration in a database of the SDN controller.
Of course, each base configuration has corresponding configuration information, and the SDN controller sets a field (e.g., dev, although other agreed characters may be used) characterizing the network device at a source field of the configuration information of each base configuration, so as to mark that the configuration comes from the network device.
As for the classification policy of the SDN control, in some embodiments, the SDN controller may store the obtained basic configuration classification in a database of the SDN controller according to a network identifier of the network device.
For example, the configuration included in category a belongs to the basic configuration on network device a, and the configuration included in category B belongs to the basic configuration on network device B.
In addition, in some embodiments, for the basic configuration acquired from the same network device, the SDN controller may further classify and store the basic configuration acquired from the same network device into a database of the SDN controller according to a difference in service corresponding to the basic configuration.
For example, the configuration included in the category a-BGP (Border Gateway Protocol) is a basic configuration for configuring a BGP service, and the configuration information included in the category a-ACL (Access Control List) is a basic configuration for configuring an ACL service, which belongs to the network device a.
In addition, since the configurations generally have a hierarchical relationship and present a tree structure, in order to reduce the comparison complexity in the subsequent comparison operation, in some embodiments, the SDN controller may further perform flattening processing on all the obtained base configurations, split the base configurations having multiple hierarchical relationships into base configurations having only one hierarchical relationship, and store the base configurations and the base configuration information thereof obtained after the flattening processing in a database of the SDN controller.
Of course, in this embodiment, the configuration corresponding to the configuration information to be operated, which is acquired by the SDN controller, is also the configuration after the flattening processing.
For example, the SDN controller obtains the following basic configuration: # ip access-list standard mytest
#10remark DA_LIAN_TEST
#20permit 36.48.3.0 0.0.0.255
#30deny 36.48.0.0 0.0.255.255
The basic configuration is an ACL configuration having a two-level structure, including an ACL and an ACE (Access Control Entry).
Wherein, the information of ACL includes: ip access-list standard mytest and 10 register DA _ LIAN _ TEST.
After the flattening process, the ACL configuration is flattened into two tables, which are stored in the database of the SDN controller, as shown in table 1 and table 2.
Table 1: database table
| ACL name | Type (B) | Whether to expand | Description of the invention | Source | Change the serial number |
| mytest | ip | standard | DA_LIAN_TEST | dev | 17623510 |
Table 1: database table
| ACL name | ACE serial number | Type (B) | Rules | Source | Change the serial number |
| mytest | 20 | permit | 36.48.3.00.0.0.255 | dev | 17623510 |
| mytest | 30 | deny | 36.48.0.00.0.255.255 | dev | 17623510 |
Of course, it should be noted that the above table is only an example, and it can be understood that, after being flattened, different configurations may have different fields included in the obtained table, and the corresponding fields may be increased or decreased according to actual situations.
After the processing, the basic configuration and the configuration information thereof which are issued to the database of the network device can be stored in the database of the SDN controller. The configuration information is used to describe the details of each configuration.
Subsequently, when step S120 is executed, the configuration information of the target device corresponding to the configuration information to be operated may be read from the database of the SDN controller according to the currently acquired configuration information to be operated. The target device refers to a network device that the configuration information to be operated should operate.
When the operation type is the new configuration, it indicates that the user expects to issue the configuration corresponding to the configuration information to be operated to the corresponding target device. In a normal situation, there should be no configuration information pointing to the same configuration as the configuration information to be operated in the database of the corresponding target device, so that in a normal situation, the configuration information corresponding to the configuration information to be operated read on the target device is empty. However, there may be a network failure, which causes the configuration pointed by the configuration information to be operated to actually exist in the database of the corresponding target device, and accordingly, the configuration information of the target device acquired at this time is not empty.
And when the operation type is the configuration deletion, the configuration pointed by the configuration information to be operated is expected to be deleted from the corresponding target equipment by the user. In a normal situation, the same configuration information as the configuration information to be operated should exist on the corresponding target device, and therefore, in a normal situation, the configuration information corresponding to the configuration information to be operated read on the target device at this time should be substantially the same as the configuration information to be operated. However, there may be a network failure, which causes that there is actually no configuration pointed by the configuration information to be operated in the database of the corresponding target device, and accordingly, the configuration information of the target device acquired at this time is empty.
Step S130: and comparing the configuration information to be operated with the configuration information of the target equipment to obtain a comparison result.
And the comparison process is a process of comparing the configuration information to be operated with the corresponding fields of the configuration information of the target equipment in pairs, so that a comparison result is output.
In the examples of the present application, the alignment results were used to characterize a series of constraints.
For example, in one example, the alignment results are: the configuration is present in a database of the SDN controller and not present in a database of the target device.
Step S140: and searching a target rule matched with the comparison result from the prestored rules.
In the embodiment of the present application, a large number of rules defined by XML may be dynamically loaded in advance to deal with comparison results corresponding to all comparison results that may appear subsequently as much as possible, so that each comparison result can be matched to a corresponding target rule.
As mentioned above, the operation type of the current configuration guarantee may also be included in the configuration guarantee request. In some embodiments, the rule type may be determined according to the operation type before performing step S140.
The operation type may include an addition configuration and a deletion configuration, and correspondingly, the rule type may include an addition rule corresponding to the addition configuration operation type, a deletion rule corresponding to the deletion configuration operation type, and the like.
In this embodiment, each rule in the database of the SDN controller has a corresponding rule type, and when step S140 is subsequently executed, a target rule matching the comparison result may be searched for from all rules that meet the determined rule type.
For example, if the current operation type is an added configuration, when the rules are matched, the target rule matching the comparison result may be searched from the added rules.
The following will describe the matching process.
For each rule, a plurality of comparison result fields and operation mode fields may be included.
For example, in one example, the rule is:
wherein rule represents each rule;
dev represents whether the configuration exists in the database of the network device;
db represents whether a database configured at the SDN controller exists;
dev represents whether the source of the configuration is from a network device;
bir represents whether the configured source is from a Service (SDN);
status represents configuring the current delivery status, and may include: logical additions (e.g., represented by field logic _ add), logical deletions (e.g., represented by field logic _ delete), physical additions, etc. (e.g., represented by field py _ add).
The option represents the mode of operation to which the rule points.
In the above example, dev, db, src.dev, src.biz, and status in the rule are all condition fields of the rule, and option is an operation mode field of the rule, which is used to indicate that the comparison result of the condition field satisfying the rule should process the subsequent flow according to the operation mode pointed by the operation mode field of the rule.
If a certain comparison result meets all condition fields of a certain rule, the rule is a target rule matched with the comparison result.
Step S150: and executing corresponding operation according to the operation mode included by the target rule.
As mentioned above, after the target rule is determined, the subsequent processes need to be processed according to the operation mode pointed by the operation mode field of the target rule.
Specifically, the operation modes can be roughly divided into: updating data, requesting errors, and performing operations.
In an embodiment a, when the operation mode of the target rule represents the update data, it represents that the SDN controller needs to issue a configuration corresponding to configuration information to be operated to the target device, but through comparison, it is found that the configuration already exists in a database of the SDN controller, and a source of the configuration is a network device (e.g., dev), at this time, it indicates that the configuration has been successfully issued and written to a startup of the target device (an area for storing a configuration file in the target device is located in a disk).
In this case, the SDN controller may update a source of a configuration corresponding to the configuration information of the target device in a database of the SDN controller to a field characterizing the SDN, for example, "SDN", the configuration being issued by the SDN to the target device. Of course, the source may also be updated to other agreed characters for characterizing the SDN, which is not described herein again.
In an embodiment B, when the operation mode of the target rule characterizes the request error, the SDN controller needs to delete a certain configuration on the target device, but by comparison, it is found that the configuration does not exist in the database of the SDN controller, which indicates that the configuration has been deleted from the target device.
In this case, the SDN controller generates error information.
In an embodiment C, when the operation mode of the target rule represents the execution operation, it needs to further determine how to specifically update the database of the SDN controller according to the operation type corresponding to the configuration information to be operated, and issue the execution command to the target device through the Netconf protocol. Wherein the execution command indicates to execute the configuration information to be operated.
Specifically, in an embodiment, when the operation type is the new configuration, the configuration information to be operated may be written into a database of the SDN controller, and the configuration type of the configuration information is set as a field representing the new addition of the logic (e.g., logic _ add), and the source of the configuration information is set as a field representing the SDN (e.g., SDN). And then, issuing an execution command to the target equipment corresponding to the configuration information to be operated through a Netconf protocol. The execution command is a new configuration, which indicates that the configuration information to be operated needs to be added.
Wherein a logical addition indicates that the configuration should be added and does not indicate that the configuration has actually been added.
In another embodiment, when the operation type is delete configuration, the configuration type of the configuration information of the target device may be set as a field characterizing logical delete (e.g., logic _ delete). And then, issuing an execution command to the target equipment corresponding to the configuration information to be operated through a Netconf protocol. The execution command is a delete configuration, which indicates delete target configuration information.
Wherein a logical deletion indicates that the configuration should be deleted and does not indicate that the configuration has actually been deleted.
After the SDN controller issues the execution command through the Netconf protocol, if the corresponding target device receives the execution command, the SDN controller executes a corresponding action. For example, when an execution command issued by the SDN controller is a newly added configuration, the target device may newly add configuration information to be operated and a configuration corresponding to the configuration information in a running configuration (an area for storing a configuration file in the network device, which is located in the memory) database of the local database; when the execution command issued by the SDN controller is to delete the configuration, the target device deletes the configuration information of the target device and the configuration corresponding to the configuration information in the running configuration database of its own database.
As mentioned above, any configuration operation that causes a change in the configuration causes the change order of the configuration to be updated. After responding to the execution command, the target device feeds back the current latest change sequence number to the SDN controller through the Netconf protocol.
After the SDN controller obtains the current latest change sequence number, if the SDN controller determines that the operation type is the new configuration, the SDN controller sets an issue result field of configuration information to be operated, which is located in a database of the SDN controller, as a field representing successful issue (for example, represented by a field success), and modifies the change sequence number of the configuration corresponding to the change sequence number to the current latest change sequence number.
Of course, in some embodiments, if the SDN controller detects a Netconf connection failure with the target device before acquiring the current latest change sequence number, the SDN controller may set a delivery result field of the configuration information to be operated, which is located in a database of the SDN controller, to a field (for example, represented by a field fail) that represents the delivery failure.
After the SDN controller acquires the current latest change sequence number, if the SDN controller determines that the operation type is the delete configuration, the SDN controller modifies the change sequence number of the configuration information of the target device in a database of the SDN controller into the current latest change sequence number.
After the target device performs corresponding operation on the running config database based on an execution command issued by the SDN controller, if the target device detects that the device has no configuration change within a preset time period, the target device may write the configuration of the running config database into a startup configuration file, so as to implement configuration drop.
After the configuration writing is successful, the target device may feed back a notification message (notification) indicating that the configuration writing is successful and the configuration writing is stored to the SDN controller based on the Netconf protocol.
After the SDN controller obtains the notification message, if the operation type is determined to be newly added configuration, setting the configuration type of the configuration information to be operated in a database of the SDN controller as a field (such as Py-add) representing physical newly added; when the operation type is determined to be the deletion configuration, the SDN controller deletes configuration information and configuration of a field (such as logic _ delete) of which the configuration type is characterized by logical deletion in a database of the SDN controller.
In addition, in some embodiments, the configuration guarantee scheme provided in the embodiment of the present application may further include an account checking process, configured to check, when a fault occurs, the configuration that the SDN controller has issued to the network device with the configuration that has been stored on the network device.
Optionally, the SDN controller may read, when it is determined that a network device in communication connection with the device has a network interruption but the interrupted network device has been repaired, a change sequence number of the configuration information stored in a running configuration database of the network device having the network interruption. And then determining the configuration information needing to be retransmitted according to the change sequence number of the configuration information stored in the running configuration database of the network equipment with network interruption and the change sequence number corresponding to the configuration information in the SDN controller database, and issuing the configuration information. This process is a quick reconciliation.
If the corresponding change serial number in the SDN controller database is greater than the change serial number in the running config database of the network device, it indicates that the network device loses the configuration and needs to re-issue the configuration; if configuration information with an empty change sequence number exists in the SDN controller database, it is indicated that the configuration corresponding to the configuration information has a fault in the issuing process and needs to be issued again.
In addition, if configuration information whose delivery result field of the configuration information is failed (for example, fail) exists in the SDN controller database, it indicates that the configuration delivery corresponding to the configuration information is failed, and the configuration information also needs to be delivered again.
Of course, for the configuration after the re-issuing, the change signal in the configuration information corresponding to the configuration needs to be updated accordingly.
Optionally, the SDN controller may read configuration information stored in the network device when it is determined that the restart device exists or configuration information with a missing change sequence number exists in a database of the SDN controller; then comparing the read configuration information with all configuration information of the corresponding network equipment stored in a database to obtain a comparison result; and repeating the steps S140-S150 to realize the full account checking.
In addition, in some embodiments, the user may also trigger a control instruction characterizing the release of the SDN controller, the control instruction being used to delete the configuration on the network device to which the control instruction is directed.
After responding to the control instruction, the SDN controller acquires configuration information from a database of the SDN controller, wherein the configuration information is SDN, and issues a deletion instruction for the configuration information aiming at the network equipment storing the configuration information, so that the network equipment storing the configuration information can respond to the deletion instruction, delete the configuration issued by the SDN controller, and complete the cleaning of the configuration of the SDN controller.
According to the configuration guarantee method provided by the embodiment of the application, the SDN controller acquires basic configuration on the network equipment in advance and stores the basic configuration in the database of the SDN controller. Subsequently, when the SDN controller has a need for performing configuration operation on the target device, the SDN controller receives configuration information to be operated, and then reads configuration information of the target device corresponding to the configuration information to be operated from a database of the SDN controller to compare with the configuration information, so as to determine a corresponding operation to guarantee the configuration.
In the process, it is no longer necessary for the network device to record a configuration operation and time at the home terminal after receiving a configuration, so that compared with the prior art, the storage requirement of the configuration guarantee on the network device can be reduced, and the method has popularization.
As shown in fig. 2, an embodiment of the present application further provides a configuration assurance device 400, which is applied to an SDN controller, where the configuration assurance device 400 may include: a receiving module 410, an obtaining module 420, a comparing module 430, a matching module 440, and an executing module 450.
A receiving module 410, configured to receive configuration information to be operated in the SDN service configuration request;
an obtaining module 420, configured to read configuration information of a target device corresponding to the configuration information to be operated from a database; the configuration information of the target equipment is the configuration information which is issued to the network equipment;
a comparison module 430, configured to compare the configuration information to be operated with the configuration information of the target device, so as to obtain a comparison result;
the matching module 440 is configured to search a target rule matching the comparison result from pre-stored rules;
the executing module 450 is configured to execute a corresponding operation according to the operation mode included in the target rule.
In a possible implementation, the executing module 450 is configured to update a source of the configuration corresponding to the configuration information of the target device in the database to SDN when the operation mode represents the update data; or when the operation mode representation request is wrong, generating error information; or when the operation mode represents and executes the issuing operation, updating the database according to the operation type corresponding to the configuration information to be operated, and issuing an execution command through a Netconf protocol, wherein the execution command represents the execution of the configuration information to be operated.
In a possible implementation manner, the executing module 450 is configured to, when the operation type is a new configuration, write the configuration information to be operated into the database, set the configuration type of the new configuration to be a logic new addition, and set a source of the new configuration to be an SDN; issuing an execution command through the Netconf protocol, wherein the execution command is newly added configuration; or, when the operation type is delete configuration, setting the configuration type of the configuration information of the target device as logic delete; and issuing an execution command through the Netconf protocol, wherein the execution command is configured to be deleted.
In a possible implementation manner, the executing module 450 is further configured to obtain a latest sequence number of change fed back by the target network device after responding to the execution command; when the operation type is the newly added configuration, setting the issuing result of the configuration information to be operated in the database as successful issuing, and modifying the change serial number of the configuration information to be operated into the latest change serial number; and when the operation type is the deletion configuration, modifying the change sequence number of the configuration information of the target device in the database into the latest change sequence number.
In a possible implementation manner, the executing module 450 is further configured to obtain a notification message fed back by the target device after the to-be-operated configuration is written into a disk of the target device; when the operation type is the newly added configuration, setting the configuration type of the configuration information to be operated in the database as a physical newly added configuration; and when the operation type is the deletion configuration, deleting the configuration information of which the configuration type is the logic deletion in the database.
In a possible implementation manner, the obtaining module 420 is further configured to obtain an operation type corresponding to the configuration information to be operated; determining a rule type according to the operation type;
correspondingly, the matching module 440 is configured to screen out an alternative rule that meets the rule type from pre-stored rules; and searching a target rule matched with the comparison result from the alternative rules.
In a possible implementation manner, the apparatus further includes an account checking module, configured to, when it is determined that a network device with a network interruption exists in network devices communicatively connected to the apparatus, read a change sequence number of configuration information stored in the network device with the network interruption exists; and determining the configuration information needing to be retransmitted according to the change sequence number of the configuration information stored in the network equipment with network interruption and the change sequence number corresponding to the configuration information in the database, and issuing the configuration information.
In a possible implementation manner, the apparatus further includes a reconciliation module, configured to, when it is determined that there is a reboot device or there is configuration information with a missing change sequence number in the database, read configuration information stored in a network device; comparing the read configuration information with all configuration information of the corresponding network equipment stored in the database to obtain a comparison result; searching a target rule matched with the comparison result from prestored rules; and executing corresponding operation according to the operation mode included by the target rule.
In a possible implementation manner, the apparatus further includes a deletion module, configured to respond to an acquired control instruction for characterizing release of SDN control; and acquiring configuration information from the database, wherein the source of the configuration information is SDN, and issuing a deletion instruction of the configuration information aiming at the network equipment storing the configuration information.
The implementation principle and the resulting technical effect of the configuration ensuring device 400 provided in the embodiment of the present application are the same as those of the foregoing method embodiment, and for the sake of brief description, no mention is made in the device embodiment, and reference may be made to the corresponding contents in the foregoing method embodiment.
In addition, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a computer, the computer program executes the configuration guarantee method as described above.
In addition, referring to fig. 3, an embodiment of the present application further provides a network device 100 for implementing the configuration guaranteeing method and apparatus in the embodiment of the present application, where the network device is an SDN controller.
Among them, the network device 100 may include: a processor 110, a memory 120.
It should be noted that the components and structure of network device 100 shown in fig. 3 are exemplary only, and not limiting, and that network device 100 may have other components and structures as desired.
Processor 110, memory 120, and other components that may be present in network device 100 are electrically connected to each other, directly or indirectly, to enable the transfer or interaction of data. For example, the processor 110, the memory 120, and other components that may be present may be electrically coupled to each other via one or more communication buses or signal lines.
The memory 120 is used for storing programs, such as the programs corresponding to the configuration guaranteeing method mentioned above or the configuration guaranteeing apparatus mentioned above. Optionally, when the configuration assurance device is stored in the memory 120, the configuration assurance device includes at least one software functional module that may be stored in the memory 120 in the form of software or firmware (firmware).
Optionally, the software function module included in the configuration securing apparatus may also be solidified in an Operating System (OS) of the network device 100.
The processor 110 is used to execute executable modules stored in the memory 120, such as software functional modules or computer programs included in the configuration assurance device. When the processor 110 receives the execution instruction, it may execute the computer program, for example, to perform: receiving configuration information to be operated in an SDN service configuration request; reading configuration information of the target equipment corresponding to the configuration information to be operated from a database; the configuration information of the target equipment is the configuration information which is issued to the network equipment; comparing the configuration information to be operated with the configuration information of the target equipment to obtain a comparison result; searching a target rule matched with the comparison result from prestored rules; and executing corresponding operation according to the operation mode included by the target rule.
Of course, the method disclosed in any of the embodiments of the present application can be applied to the processor 110, or implemented by the processor 110.
In summary, according to the configuration ensuring method and apparatus provided in the embodiments of the present invention, the SDN controller obtains the basic configuration on the network device in advance and stores the basic configuration in the database of the SDN controller. Subsequently, when the SDN controller has a need for performing configuration operation on the target device, the SDN controller receives configuration information to be operated, and then reads configuration information of the target device corresponding to the configuration information to be operated from a database of the SDN controller to compare with the configuration information, so as to determine a corresponding operation to guarantee the configuration.
In the process, it is no longer necessary for the network device to record a configuration operation and time at the home terminal after receiving a configuration, so that compared with the prior art, the storage requirement of the configuration guarantee on the network device can be reduced, and the method has popularization.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a notebook computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (10)
1. A configuration assurance method applied to an SDN controller, the method comprising:
receiving configuration information to be operated in an SDN service configuration request;
reading configuration information of the target equipment corresponding to the configuration information to be operated from a database; the configuration information of the target equipment is the configuration information which is issued to the network equipment;
comparing the configuration information to be operated with the configuration information of the target equipment to obtain a comparison result;
searching a target rule matched with the comparison result from prestored rules;
and executing corresponding operation according to the operation mode included by the target rule.
2. The method according to claim 1, wherein the executing the corresponding operation according to the operation mode included in the target rule comprises:
when the operation mode represents the updated data, updating the configured source corresponding to the configuration information of the target device in the database into SDN; alternatively, the first and second electrodes may be,
when the operation mode represents that the request is wrong, generating error information; alternatively, the first and second electrodes may be,
and when the operation mode represents and executes the issuing operation, updating the database according to the operation type corresponding to the configuration information to be operated, and issuing an execution command through a Netconf protocol, wherein the execution command represents the execution of the configuration information to be operated.
3. The method of claim 2, wherein updating the database according to the operation type corresponding to the configuration information to be operated, and issuing an execution command through a Netconf protocol comprises:
when the operation type is newly added configuration, writing the configuration information to be operated into the database, setting the configuration type of the database as logic newly added and setting the source of the database as SDN; issuing an execution command through the Netconf protocol, wherein the execution command is newly added configuration; alternatively, the first and second electrodes may be,
when the operation type is the configuration deletion, setting the configuration type of the configuration information of the target equipment as logic deletion; and issuing an execution command through the Netconf protocol, wherein the execution command is configured to be deleted.
4. The method according to claim 3, wherein after the issuing of the execution command by the Netconf protocol, the executing of the corresponding operation further comprises:
acquiring the latest change serial number fed back by the target equipment after responding to the execution command;
when the operation type is the newly added configuration, setting the issuing result of the configuration information to be operated in the database as successful issuing, and modifying the change serial number of the configuration information to be operated into the latest change serial number;
and when the operation type is the deletion configuration, modifying the change sequence number of the configuration information of the target device in the database into the latest change sequence number.
5. The method of claim 4, wherein the performing the corresponding operation further comprises:
obtaining a notification message fed back by the target device after the target device writes the configuration to be operated into a disk of the target device;
when the operation type is the newly added configuration, setting the configuration type of the configuration information to be operated in the database as a physical newly added configuration;
and when the operation type is the deletion configuration, deleting the configuration information of which the configuration type is the logic deletion in the database.
6. The method according to any one of claims 1-5, further comprising:
acquiring an operation type corresponding to the configuration information to be operated;
determining a rule type according to the operation type;
correspondingly, the searching for the target rule matching with the comparison result from the pre-stored rules includes:
screening out alternative rules which accord with the rule types from rules stored in advance;
and searching a target rule matched with the comparison result from the alternative rules.
7. The method according to any one of claims 1-5, further comprising:
when determining that network equipment with network interruption exists in network equipment in communication connection with the equipment, reading a change sequence number of configuration information stored in the network equipment with the network interruption;
and determining the configuration information needing to be retransmitted according to the change sequence number of the configuration information stored in the network equipment with network interruption and the change sequence number corresponding to the configuration information in the database, and issuing the configuration information.
8. The method according to any one of claims 1-5, further comprising:
when determining that the restarting equipment exists or the configuration information with the lost change sequence number exists in the database, reading the configuration information stored in the network equipment;
comparing the read configuration information with all configuration information of the corresponding network equipment stored in the database to obtain a comparison result;
searching a target rule matched with the comparison result from prestored rules;
and executing corresponding operation according to the operation mode included by the target rule.
9. The method according to any one of claims 1-5, further comprising:
responding to the acquired control instruction for removing the SDN control;
and acquiring configuration information from the database, wherein the source of the configuration information is SDN, and issuing a deletion instruction of the configuration information aiming at the network equipment storing the configuration information.
10. A configuration assurance device applied to an SDN controller, the device comprising:
the receiving module is used for receiving the configuration information to be operated in the SDN service configuration request;
the acquisition module is used for reading the configuration information of the target equipment corresponding to the configuration information to be operated from a database; the configuration information of the target equipment is the configuration information which is issued to the network equipment;
the comparison module is used for comparing the configuration information to be operated with the configuration information of the target equipment to obtain a comparison result;
the matching module is used for searching a target rule matched with the comparison result from the prestored rules;
and the execution module is used for executing corresponding operation according to the operation mode included by the target rule.
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