CN110855458B - Configuration command generation method and equipment - Google Patents
Configuration command generation method and equipment Download PDFInfo
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- CN110855458B CN110855458B CN201810950489.7A CN201810950489A CN110855458B CN 110855458 B CN110855458 B CN 110855458B CN 201810950489 A CN201810950489 A CN 201810950489A CN 110855458 B CN110855458 B CN 110855458B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
- H04L41/084—Configuration by using pre-existing information, e.g. using templates or copying from other elements
- H04L41/0843—Configuration by using pre-existing information, e.g. using templates or copying from other elements based on generic templates
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- H—ELECTRICITY
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- 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
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- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
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- H—ELECTRICITY
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- 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
- H04L41/0876—Aspects of the degree of configuration automation
- H04L41/0886—Fully automatic configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L41/12—Discovery or management of network topologies
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Abstract
According to the configuration command generation scheme provided by the application, the configuration variables and the configuration items can be determined according to the network model of the target network during network configuration, so that the difference between the current network and the target network can be rapidly and accurately determined, the configuration items and the configuration variables related to the current network configuration can be further obtained, and the configuration command can be generated according to the configuration variables and the configuration command templates in the corresponding configuration items. Because the configuration items comprise a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to one configuration command template, the configuration commands can be split and combined in a modularization mode in the generation process according to the needs of the network configuration, and the configuration commands are automatically generated while the atomicity requirements in the network configuration are met.
Description
Technical Field
The present application relates to the field of information technologies, and in particular, to a method and a device for generating a configuration command.
Background
The behavior of the network device is defined by the configuration of the network device, and the network configuration has a life cycle of the network device, which mainly comprises network new establishment, single device change and whole network change. When a network is newly built, an initial configuration command is pushed to network equipment in a full amount, when single equipment is changed, the configuration command is pushed to the single network equipment in an incremental manner, and when the whole network is changed, the configuration of a plurality of equipment needs to follow a preset plan and change from an initial state to a target state step by step, so that the whole change process can be ensured to be smooth, and the deployed service is not influenced.
In the process of network configuration, the configuration command generally needs to be determined by an operator according to the actual configuration change difference before changing. In an actual scene, particularly for a large-scale network, many network devices are included, and specifications of configuration commands of the network devices are different, so that the configuration commands are difficult to automatically generate in a standardized manner, and atomicity requirements in network configuration cannot be met.
Content of application
An object of the present application is to provide a configuration command generation solution to solve the problems that a configuration command for network configuration cannot be automatically generated and atomicity requirements in network configuration cannot be met.
In order to achieve the above object, the present application provides a method for generating a configuration command, including:
determining a configuration variable and a configuration item according to a network model of a target network during network configuration, wherein the network model comprises a plurality of topology layers, the topology layers are used for describing topology relationship information among network devices in the network, the association relationship among the topology layers corresponds to a dependency sequence for data layer-by-layer encapsulation during data transmission, the configuration item comprises a plurality of configuration actions for realizing network configuration atomicity, and each configuration action corresponds to a configuration command template;
and generating a configuration command according to the configuration variable and a configuration command template in the corresponding configuration item, wherein the configuration command is used for being issued to network equipment so that the network equipment executes the configuration command to realize a corresponding configuration action and perform network configuration.
According to another aspect of the present application, there is also provided a configuration command generating apparatus, including:
the data processing device is used for determining configuration variables and configuration items according to a network model of a target network during network configuration, wherein the network model comprises a plurality of topology layers, the topology layers are used for describing topology relation information among network devices in the network, the association relation among the topology layers corresponds to a dependency sequence for data layer-by-layer encapsulation during data transmission, the configuration items comprise a plurality of configuration actions for realizing network configuration atomicity, and each configuration action corresponds to a configuration command template;
and the configuration generating device is used for generating a configuration command according to the configuration variable and the configuration command template in the corresponding configuration item, wherein the configuration command is used for being issued to network equipment so that the network equipment executes the configuration command to realize a corresponding configuration action and perform network configuration.
Furthermore, the present application also provides a computing device comprising a memory for storing computer program instructions and a processor for executing the computer program instructions, wherein the computer program instructions, when executed by the processor, trigger the device to perform the configuration command generation method.
According to the scheme provided by the application, the configuration variables and the configuration items can be determined according to a network model of a target network during network configuration, because the network model comprises a plurality of topology layers, the topology layers are used for describing topology relation information between network devices in the network, and the incidence relation among the topology layers corresponds to the dependency sequence of data layer-by-layer encapsulation during data transmission, the difference between the current network and the target network can be rapidly and accurately determined based on the network model, so that the configuration items and the configuration variables related to the current network configuration can be obtained, and the configuration commands can be generated according to the configuration variables and the configuration command templates in the corresponding configuration items. Because the configuration items comprise a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to one configuration command template, the configuration commands can be split and combined in a modularization mode in the generation process according to the needs of the network configuration, and the configuration commands are automatically generated while the atomicity requirements in the network configuration are met.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a processing flow chart of a configuration command generating method according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a change of a BGP topology layer in a network model during network configuration;
FIG. 3 is a diagram illustrating a configuration command obtained by combining a plurality of second configuration commands based on a configuration specification according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a structural split performed by a configuration center using a configuration command generation method according to an embodiment of the present application when processing is performed
Fig. 5 is a schematic structural diagram of a configuration command generating device according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a computing device according to an embodiment of the present application;
the same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The present application is described in further detail below with reference to the attached figures.
In a typical configuration of the present application, the terminal, the devices serving the network each include one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, programmed devices, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
The embodiment of the application provides a configuration command generation method, which can quickly and accurately obtain configuration items and configuration variables related to the network configuration based on a network model, wherein the configuration items comprise a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to a configuration command template, so that the configuration commands can be modularly split and combined in the generation process according to the needs of the network configuration, and the configuration commands are automatically generated while the atomicity requirements during the network configuration are met. In the embodiment of the present application, the execution subject of the above method may include, but is not limited to, implementations such as a network host, a single network server, multiple network server sets, or a computer set based on cloud computing. Here, the Cloud is composed of a large number of hosts or network servers based on Cloud Computing (Cloud Computing), which is a type of distributed Computing, one virtual computer consisting of a collection of loosely coupled computers.
Fig. 1 illustrates a configuration command generation method provided in an embodiment of the present application, where the method includes the following processing steps:
step S101, determining configuration variables and configuration items according to a network model of a target network during network configuration. The target network is an expected network after the network configuration is completed, and the method aims to construct the target network by issuing a configuration command to the network equipment. The network model comprises a plurality of topology layers, the topology layers are used for describing topology relation information among network devices in the network, and the incidence relation among the topology layers corresponds to the dependency sequence of data layer-by-layer encapsulation during data transmission, so that the target network can be accurately described to obtain configuration variables and configuration items.
In a practical scenario, the network configuration may be a change of network, i.e. a change from an existing network to a target network. The existing network refers to a network before network configuration is performed, namely, the existing network is a target network. In this scenario, the scheme of the embodiment of the application may change the current network into the target network by issuing the configuration command to the network device. At this time, when determining the configuration variables and the configuration direction, the configuration variables and the configuration items may be determined according to difference information of each topology layer in the first network model of the current network and the second network model of the target network, where the difference information is different points between topology relationships between network devices in each topology layer in the network model, for example, taking one of the topology layers as an example, fig. 2 shows a topology relationship of a topology layer corresponding to BGP (Border Gateway Protocol) in the network model, where nodes WAN, DCA, and DCB respectively represent network devices, 210 represents a BGP Protocol topology layer in the network model of the current network, 220 represents a BGP Protocol topology layer in the network model of the target network, and difference information of the topology layer before and after network configuration may be obtained by comparing the topology layers 210 and 220. In the topology layer of BGP, the specific content of the difference information may be different points of configuration information of BGP peer groups, BGP neighbors, routing policies for ingress and egress directions, prefix lists when ip matches, and the like of network devices before and after network configuration.
Because the difference information represents different points between topological relations among the network devices in each topological layer in the network model, the configuration variables of any one network device in the network, which need to be changed in the current network configuration, can be quickly determined according to the difference information. For example, in the BGP peering configuration process, the configuration variables may include local ASN (Autonomous System Number) of the network device, peer ip (peer ip), peer ASN (peer ASN), and so on.
In another scenario of the embodiment of the present application, the network configuration may also be a new network, that is, a new network is established in a state without a network, and the new network is a target network. At this time, when determining the configuration variables and the configuration direction, the configuration variables and the configuration items may be determined based on the topology relationship information of each topology layer in the second network model of the target network.
The configuration items comprise a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to a configuration command template. In practical scenarios, each configuration item is used to implement a configuration action of a network device in a network configuration process in a specific aspect, for example, a related configuration action regarding BGP rating may be included in one configuration item, a related configuration action regarding routing Policy (Route Policy) may be included in one configuration phase, and a related configuration action regarding Prefix List (Prefix List) may also be included in one configuration phase. The specific functional division corresponding to each configuration item can be determined according to the actual network structure and configuration requirements.
Each configuration action is used for completing one process in the configuration process of the network device, for example, the configuration in the network device can be changed, or the configuration can be restored to an initial state before change when the configuration has a problem, so that a plurality of configuration actions in each configuration item can realize network configuration atomicity.
In an actual scenario, based on a variety of factors, a network selects different specifications of products according to actual situations when designing and selecting a network device, for example, although a plurality of routers in the network can all implement the same function, their manufacturers, models, or system versions may be different, and thus specific configuration commands for implementing the same configuration action may also be different accordingly. Therefore, in the embodiment of the present application, when the configuration variable and the configuration item are determined according to the network model of the target network during network configuration, the network device to be configured and the corresponding configuration variable may be determined according to the network model of the target network during network configuration. If the network is newly established, determining network equipment to be configured according to the topological relation information of each topological layer in the second network model of the target network; when the network is configured to change the network, the network device to be configured may be determined according to the difference information of each topology layer in the first network model of the current network and the second network model of the target network, for example, according to the difference information shown in fig. 2, the network device to be configured may be determined to be WAN, MAN, DC1, and DC2, and the corresponding configuration variables are a local ASN, an opposite terminal IP, an opposite terminal ASN, and the like of the network device.
In an actual scenario, the configuration specification may be related to at least any one of vendor information, system version information, and device model information of the network device, and under different configuration specifications, configuration command templates corresponding to the same configuration action are different. For example, when loading the same configuration, the configuration commands for the routers produced by manufacturer a will take one format, while the configuration commands for the routers produced by manufacturer B will take another format. Therefore, the configuration specification corresponding to each network device can be predetermined during network networking, and at the moment, after the network device to be configured is determined, the configuration specification of the network device to be configured can be determined. The configuration specification includes configuration items of the network device to be configured, such as BGP rating configuration item, Route Policy configuration item, Prefix List configuration item, and the like.
After determining the configuration specification, according to the configuration variable, determining a configuration item required for network configuration of the network device to be configured in the configuration specification. Because the configuration specification includes all configuration items that may be used in the configuration process of the network device to be configured, and during actual network configuration, only part of the configuration items may be needed, so that the configuration items needed for network configuration can be selected by combining actual configuration variables.
And S102, generating a configuration command according to the configuration variable and the configuration command template in the corresponding configuration item. The configuration command may be issued to a network device, so that the network device executes the configuration command to implement a corresponding configuration action for network configuration. By presetting the configuration command templates corresponding to the configuration actions in the configuration items, an operator does not need to remember the difference between the configuration commands of the network equipment with different specifications, and can generate the corresponding configuration command by combining the configuration command templates after obtaining the configuration variables, so that the atomicity requirement during network configuration is met, meanwhile, the configuration command generation service for shielding the equipment difference is provided, and the configuration command is automatically generated.
In an embodiment of the present application, the configuration actions in the configuration item may include at least five classes, i.e., a load action (do), an effect action (activate), a check action (check), a deactivate action (deactivate), and an undo action (undoo), so as to implement the network configuration atomicity. For example, taking the BGP protocol as an example, when performing BGP rating configuration on a network device, the configuration command template corresponding to the loading action (do) may be used to load the configuration information in the network device and be in an inactive state.
Router bgp${Local ASN}
neighbor${PeerIP}peer-group
neighbor${PeerIP}remote-as${PeerASN}
neighbor${PeerIP}route-policy${PeerName}_IN in
neighbor${PeerIP}route-policy${PeerName}_OUT out
The configuration command template corresponding to the validate action (activate) may be used as follows for validating the loaded configuration.
neighbor${PeerIP}activate
The configuration command template corresponding to the invalidate action (invalidate) may be used to invalidate the validated configuration as follows.
no neighbor${PeerIP}activate
The configuration command template corresponding to the undo action (undoo) may be used as follows, and is used for undoing the invalid configuration on the network device, so as to ensure that the configuration of the network device is restored to the initial state before the configuration loading.
Router bgp${Local ASN}
no neighbor${PeerIP}peer-group
The configuration command template corresponding to the check action (check) may be used to check that the configuration that has been validated is correct.
show ip bgp neighbors${PeerIP}
The { } represents configuration variables in the configuration command, and by generating the configuration command, it can be ensured that the configuration command corresponding to any change step covers all key functions during generation, and the check can be performed after the configuration of the network configuration is validated, and a rollback scheme is searched without rush when a fault occurs, so that the integrity and fault recovery capability of the change scheme are ensured before the change is executed.
For example, when BGP waiting configuration is required for a network device during network configuration, configuration variables to be used during configuration include $ { Local ASN } 100, $ { peeris } 192.168.1.0, $ { peeris } 400, and $ { PeerName } DCB. Therefore, the configuration command corresponding to the loading action can be automatically generated as follows:
neighbor 192.168.1.0peer-group
neighbor 192.168.1.0remote-as 400
neighbor 192.168.1.0route-policy DCB_IN in
neighbor 192.168.1.0route-policy DCB_OUT out
and sending the configuration command to the corresponding network equipment and executing the configuration command, namely loading the configuration information on the network equipment. If it is necessary to validate the configuration information, a configuration command corresponding to the validation action may be sent: neighbor 192.168.1.0 activate. Therefore, flexible service customization capability can be provided for the configuration variables, and different service requirements can be realized after the configuration variables are obtained by utilizing the corresponding configuration items and the configuration actions.
In an actual scenario, a plurality of configuration items may be involved in one network configuration, for example, at least a BGP peering configuration item, a Route Policy configuration item, and a Prefix List configuration item are required in configuring a BGP peering relationship. Therefore, when determining configuration items, a plurality of configuration items required for network configuration of the network device to be configured may be determined in the configuration specification according to the configuration variables. For a plurality of configuration items, when generating a configuration command, a plurality of groups of first configuration commands may be obtained according to the configuration variables and the configuration command templates in the corresponding plurality of configuration items. Wherein, a group of first configuration commands corresponds to a configuration item. The configuration specification includes, in addition to all configuration items that may be used by the network device in the configuration process, because the network device needs to be configured in a specific order when executing the configuration command, for example, when performing BGP configuration, names of peer groups, neighbors, and routing policies need to be specified first, and then a prefix list is configured after configuring specific contents of the routing policies, the configuration specification further includes a combination order of the configuration items, so that after the configuration command templates in the configuration items generate corresponding first configuration commands, the configuration commands can be combined in the specific order to generate configuration commands that can be smoothly executed by the network device. Therefore, after acquiring the plurality of groups of first configuration commands, the plurality of groups of first configuration commands are combined according to the configuration specification to generate the configuration commands which are issued to the network equipment for execution.
In an embodiment of the present application, if the configuration actions in the configuration items include five types, i.e., a loading action, an effecting action, an examining action, an invalidating action, and an undoing action, each group of the first configuration commands may also include five configuration commands corresponding to the loading action, the effecting action, the examining action, the invalidating action, and the undoing action, at this time, when the configuration commands are generated by combining the multiple groups of the first configuration commands according to the configuration specification, a second configuration command corresponding to at least one configuration action may be selected from each group of the first configuration commands according to a requirement of network configuration, and then the selected second configuration commands are combined according to the configuration specification to generate the configuration commands. The requirement of the network configuration refers to a requirement for a configuration command in the network configuration process to complete a specific configuration action, for example, second configuration commands corresponding to a plurality of loading actions may be selected from each group of first configuration commands, and the second configuration commands corresponding to the loading actions are combined into a configuration command to be issued to the network device according to the configuration specification.
For example, when configuring the BGP, it may generate all second configuration commands corresponding to configuration actions in the configuration item of BGP peering, the configuration item of Route Policy, and the configuration item of Prefix List, and then select a second configuration command corresponding to a loading action from the second configuration commands, where the second configuration command corresponding to the loading action in the configuration item of BGP peering is:
neighbor 192.168.1.0peer-group
neighbor 192.168.1.0remote-as 400
neighbor 192.168.1.0route-policy DCB_IN in
neighbor 192.168.1.0route-policy DCB_OUT out
the second configuration command corresponding to the loading action in the configuration item of Route Policy is:
route-policy DCB_IN permit node 10
match ip address prefix-list dcb-net
route-policy DCB_IN permit node 20
route-policy DCB_OUT permit node 10
match ip address prefix-list agg
route-policy DCB_OUT permit node 20
the second configuration command corresponding to the loading action in the configuration item of the Prefix List is:
ip ip-prefix dcb-net index 10permit 10.0.1.0 24
ip ip-prefix agg index 10permit 10.0.1.0 8
the configuration specification defines a combination order of the second configuration commands, so that the configuration commands shown in fig. 3 can be formed, and after the configuration commands are issued to the network device DCB, the network device DCB can complete corresponding configurations. Therefore, the execution sequence of different configuration actions can be ensured in the configuration process, for example, after the loading action and the validation action are sequentially executed, the checking action is executed again, if the checking is passed, the configuration is normally completed, if the checking is not passed, the configuration is failed at this time, and the expected purpose is not completed, at this time, the invalidation action and the revocation action can be executed, the configuration of the network equipment is restored to the initial state before the configuration is not changed, and the atomicity of the change operation transaction is ensured.
In addition, in the method provided in the embodiment of the present application, when determining the configuration variable, since the representation manners of the configuration variable in different network devices may be different, for example, in routers of different vendors, the representation manner for the ip prefix may be 10.0.1.024, or 10.0.1.0\ 24. Therefore, configuration variables corresponding to different network devices can be obtained according to a network model of a target network during network configuration, and then the configuration variables are subjected to variable conversion to obtain standardized configuration variables, for example, the expression modes of ip prefixes are uniformly converted into 10.0.1.024.
Fig. 4 is a schematic view illustrating a structural split when a configuration center that uses the configuration command generation method in the embodiment of the present application performs processing. The input data of the configuration center may depend on the difference information of each topology layer in the network model, for example, the first network model of the current network and the second network model of the target network, and the configuration variables are obtained through variable actions based on the difference information. The variable action may be to standardize configuration variables of different forms and convert the configuration variables into configuration variables of a uniform form. The configuration specification combines a plurality of configuration service units together to provide a configuration service, wherein each configuration service unit comprises a configuration item, each configuration item comprises five configuration actions, each configuration action corresponds to a configuration module, and each configuration module provides a corresponding configuration command template. After the configuration variables are determined, corresponding configuration service units can be selected and combined according to the configuration specification, and a configuration name is generated by combining a configuration command template provided by a configuration module in the configuration service units so as to provide the configuration name for the network equipment to change the configuration.
Based on the same inventive concept, the embodiment of the present application further provides a device for generating a configuration command, the method corresponding to the device is the method for generating a configuration command in the foregoing embodiment, and the principle of solving the problem is similar to the method.
The embodiment of the application provides a configuration command generating device, which can quickly and accurately determine the difference between a current network and a target network, so as to obtain a configuration item and a configuration variable related to the network configuration, wherein the configuration item comprises a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to a configuration command template, so that the configuration command can be split and combined in a modularized manner according to the needs of the network configuration in the generating process, and the configuration command is automatically generated while the atomicity requirements in the network configuration are met. In the embodiment of the present application, the above-mentioned devices may include, but are not limited to, implementations such as a network host, a single network server, multiple network server sets, or a computer set based on cloud computing. Here, the Cloud is made up of a large number of hosts or web servers based on Cloud Computing (Cloud Computing), which is a type of distributed Computing, one virtual computer consisting of a collection of loosely coupled computers.
Fig. 5 shows a configuration command generating device provided in an embodiment of the present application, where the device includes a data processing apparatus 510 and a configuration generating apparatus 520. The data processing device 510 is configured to determine configuration variables and configuration items according to a network model of a target network during network configuration. The target network is an expected network after the network configuration is completed, and the method aims to construct the target network by issuing a configuration command to the network equipment. The network model comprises a plurality of topology layers, the topology layers are used for describing topology relation information among network devices in the network, and the incidence relation among the topology layers corresponds to the dependency sequence for packaging data layer by layer when data transmission is carried out, so that the target network can be accurately described to obtain configuration variables and configuration items. .
In a practical scenario, the network configuration may be a change of network, i.e. a change from an existing network to a target network. The existing network refers to a network before network configuration is performed, i.e., a target network. In this scenario, the scheme of the embodiment of the application may change the current network into the target network by issuing the configuration command to the network device. At this time, in determining the configuration variables and the configuration direction, the data processing device 510 may determine the configuration variables and the configuration items according to the difference information of each topology layer in the first network model of the current network and the second network model of the target network, the difference information is different points between topological relations between network devices in each topological layer in the network model, for example, taking one of the topology layers as an example, fig. 2 shows the topological relationship of the topology layer corresponding to BGP (Border Gateway Protocol) in the network model, wherein nodes WAN, DCA and DCB represent network devices, respectively, 210 represents a BGP protocol topology layer in a network model of a current network, 220 represents a BGP protocol topology layer in a network model of a target network, by comparing the topology layer 210 with the topology layer 220, the difference information of the topology layer before and after the network configuration can be obtained. In the topology layer of BGP, the specific content of the difference information may be different points of configuration information of BGP peer groups, BGP neighbors, routing policies for ingress and egress directions, prefix lists when ip matches, and the like of network devices before and after network configuration.
Because the difference information represents different points between the topological relations among the network devices in each topological layer in the network model, the configuration variables of any one network device in the network, which need to be changed in the current network configuration, can be quickly determined according to the difference information. For example, in the BGP peer configuration process, the configuration variables may include a local ASN (Autonomous System Number) of the network device, a peer ip (peer ip), a peer ASN (peer ASN), and the like.
In another scenario of the embodiment of the present application, the network configuration may also be a new network, that is, a new network is established in a state without a network, and the new network is a target network. At this time, in determining the configuration variables and the configuration direction, the data processing device 510 may determine the configuration variables and the configuration items based on the topology relationship information of each topology layer in the second network model of the target network.
The configuration items comprise a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to a configuration command template. In practical scenarios, each configuration item is used to implement a configuration action of a network device in a network configuration process in a specific aspect, for example, a related configuration action regarding BGP rating may be included in one configuration item, a related configuration action regarding routing Policy (Route Policy) may be included in one configuration phase, and a related configuration action regarding Prefix List (Prefix List) may also be included in one configuration phase. The specific functional division corresponding to each configuration item can be determined according to the actual network structure and configuration requirements.
Each configuration action is used for completing one process in the configuration process of the network device, for example, the configuration in the network device can be changed, or the configuration can be restored to an initial state before change when the configuration has a problem, so that a plurality of configuration actions in each configuration item can realize network configuration atomicity.
In an actual scenario, based on a variety of factors, a network selects different specifications of products according to actual situations when designing and selecting a network device, for example, although a plurality of routers in the network can all implement the same function, their manufacturers, models, or system versions may be different, and thus specific configuration commands for implementing the same configuration action may also be different accordingly. Therefore, in the embodiment of the present application, when determining the configuration variables and the configuration items according to the network model of the target network during network configuration, the network device to be configured and the corresponding configuration variables may be determined according to the network model of the target network during network configuration. If the network is newly established, determining network equipment to be configured according to the topological relation information of each topological layer in the second network model of the target network; when the network is configured to change the network, the network device to be configured may be determined according to the difference information of each topology layer in the first network model of the current network and the second network model of the target network, for example, according to the difference information shown in fig. 2, the network device to be configured may be determined to be WAN, MAN, DC1, and DC2, and the corresponding configuration variables are a local ASN, an opposite terminal IP, an opposite terminal ASN, and the like of the network device.
In an actual scenario, the configuration specification may be related to at least any one of vendor information, system version information, and device model information of the network device, and the configuration command templates corresponding to the same configuration action are different under different configuration specifications. For example, when loading the same configuration, the configuration commands for the routers produced by manufacturer a will take one format, while the configuration commands for the routers produced by manufacturer B will take another format. Thus, the configuration specification corresponding to each network device may be predetermined during network networking, and at this time, after determining the network device to be configured, the data processing apparatus 510 may obtain the configuration specification determining the network device to be configured. The configuration specification includes configuration items of the network device to be configured, such as BGP waiting configuration item, Route Policy configuration item, Prefix List configuration item, and the like.
After determining the configuration specification, the data processing apparatus 510 may determine, according to the configuration variable, a configuration item required for network configuration of the network device to be configured in the configuration specification. Because the configuration specification includes all configuration items that may be used in the configuration process of the network device to be configured, and during actual network configuration, only part of the configuration items may be needed, so that the configuration items needed for network configuration can be selected by combining actual configuration variables.
The configuration generating device 520 is configured to generate a configuration command according to the configuration variable and the configuration command template in the corresponding configuration item. The configuration command may be issued to a network device, so that the network device executes the configuration command to implement a corresponding configuration action for network configuration. By presetting the configuration command templates corresponding to the configuration actions in the configuration items, an operator does not need to remember the difference between the configuration commands of the network equipment with different specifications, and can generate the corresponding configuration command by combining the configuration command templates after obtaining the configuration variables, so that the atomicity requirement during network configuration is met, meanwhile, the configuration command generation service for shielding the equipment difference is provided, and the configuration command is automatically generated.
In an embodiment of the present application, the configuration actions in the configuration item may include at least five classes, i.e., a load action (do), an effect action (activate), a check action (check), a deactivate action (deactivate), and an undo action (undoo), so as to implement the network configuration atomicity. For example, taking the BGP protocol as an example, when performing BGP peering configuration on a network device, the configuration command template corresponding to the loading action (do) may be used as follows, so that the configuration information is loaded in the network device and is in an inactive state.
Router bgp${Local ASN}
neighbor${PeerIP}peer-group
neighbor${PeerIP}remote-as${PeerASN}
neighbor${PeerIP}route-policy${PeerName}_IN in
neighbor${PeerIP}route-policy${PeerName}_OUT out
The configuration command template corresponding to the validate action (activate) may be used as follows for validating the loaded configuration.
neighbor${PeerIP}activate
The configuration command template corresponding to the invalidate action (invalidate) may be used to invalidate the validated configuration as follows.
no neighbor${PeerIP}activate
The configuration command template corresponding to the undo action (undoo) may be used as follows, and is used for undoing the invalid configuration on the network device, so as to ensure that the configuration of the network device is restored to the initial state before the configuration loading.
Router bgp${Local ASN}
no neighbor${PeerIP}peer-group
The configuration command template corresponding to the checking action (check) may be used to check the configuration that has been validated to see if the configuration is correct.
show ip bgp neighbors${PeerIP}
The { } represents configuration variables in the configuration command, and by generating the configuration command, it can be ensured that the configuration command corresponding to any change step covers all key functions when being generated, the check can be performed after the configuration of the network configuration takes effect, and a rollback scheme is searched without rush when a fault occurs, so that the integrity and fault recovery capability of the change scheme are ensured before the change is executed.
For example, when BGP waiting configuration needs to be performed on one network device during network configuration, if it is determined that the configuration variables to be used during configuration include $ { Local ASN } 100, $ { peeris } 192.168.1.0, $ { peeris } 400, $ { peernan } DCB. Therefore, the configuration command corresponding to the loading action can be automatically generated as follows:
neighbor 192.168.1.0peer-group
neighbor 192.168.1.0remote-as 400
neighbor 192.168.1.0route-policy DCB_IN in
neighbor 192.168.1.0route-policy DCB_OUT out
and sending the configuration command to the corresponding network equipment and executing the configuration command, namely loading the configuration information on the network equipment. If it is necessary to validate the configuration information, a configuration command corresponding to the validation action may be sent: neighbor 192.168.1.0 activate. Therefore, flexible service customization capability can be provided for the configuration variables, and different service requirements can be realized after the configuration variables are obtained by utilizing the corresponding configuration items and the configuration actions.
In an actual scenario, a plurality of configuration items may be involved in one network configuration, for example, at least a BGP peering configuration item, a Route Policy configuration item, and a Prefix List configuration item are required in configuring a BGP peering relationship. Therefore, when determining configuration items, a plurality of configuration items required for network configuration of the network device to be configured may be determined in the configuration specification according to the configuration variables. For a plurality of configuration items, when generating a configuration command, a plurality of groups of first configuration commands may be obtained according to the configuration variables and the configuration command templates in the corresponding plurality of configuration items. Wherein, a group of first configuration commands corresponds to a configuration item. The configuration specification includes, in addition to all configuration items that may be used by the network device in the configuration process, because the network device needs to be configured in a specific order when executing the configuration command, for example, when performing BGP configuration, names of peer groups, neighbors, and routing policies need to be specified first, and then a prefix list is configured after configuring specific contents of the routing policies, the configuration specification further includes a combination order of the configuration items, so that after the configuration command templates in the configuration items generate corresponding first configuration commands, the configuration commands can be combined in the specific order to generate configuration commands that can be smoothly executed by the network device. Therefore, after acquiring the plurality of groups of first configuration commands, the plurality of groups of first configuration commands are combined according to the configuration specification to generate the configuration commands which are issued to the network equipment for execution.
In an embodiment of the present application, if the configuration actions in the configuration items include five types, i.e., a loading action, an effecting action, an examining action, an invalidating action, and an undoing action, each group of the first configuration commands may also include five configuration commands corresponding to the loading action, the effecting action, the examining action, the invalidating action, and the undoing action, at this time, when the configuration commands are generated by combining the multiple groups of the first configuration commands according to the configuration specification, a second configuration command corresponding to at least one configuration action may be selected from each group of the first configuration commands according to a requirement of network configuration, and then the selected second configuration commands are combined according to the configuration specification to generate the configuration commands. The requirement of the network configuration refers to a requirement for a configuration command in the network configuration process to complete a specific configuration action, for example, second configuration commands corresponding to a plurality of loading actions may be selected from each group of first configuration commands, and the second configuration commands corresponding to the loading actions are combined into a configuration command to be issued to the network device according to the configuration specification.
For example, when configuring the BGP, it may generate all second configuration commands corresponding to configuration actions in the configuration item of BGP peering, the configuration item of Route Policy, and the configuration item of Prefix List, and then select a second configuration command corresponding to a loading action from the second configuration commands, where the second configuration command corresponding to the loading action in the configuration item of BGP peering is:
neighbor 192.168.1.0peer-group
neighbor 192.168.1.0remote-as 400
neighbor 192.168.1.0route-policy DCB_IN in
neighbor 192.168.1.0route-policy DCB_OUT out
the second configuration command corresponding to the loading action in the configuration item of Route Policy is:
route-policy DCB_IN permit node 10
match ip address prefix-list dcb-net
route-policy DCB_IN permit node 20
route-policy DCB_OUT permit node 10
match ip address prefix-list agg
route-policy DCB_OUT permit node 20
the second configuration command corresponding to the loading action in the configuration item of the Prefix List is:
ip ip-prefix dcb-net index 10permit 10.0.1.0 24
ip ip-prefix agg index 10permit 10.0.1.0 8
the configuration specification defines a combination order of the second configuration commands, so that the configuration commands shown in fig. 3 can be formed, and after the configuration commands are issued to the network device DCB, the network device DCB can complete corresponding configurations. Therefore, the execution sequence of different configuration actions can be ensured in the configuration process, for example, after the loading action and the validation action are sequentially executed, the checking action is executed again, if the checking is passed, the configuration is normally completed, if the checking is not passed, the configuration is failed at this time, and the expected purpose is not completed, at this time, the invalidation action and the revocation action can be executed, the configuration of the network equipment is restored to the initial state before the configuration is not changed, and the atomicity of the change operation transaction is ensured.
In addition, in the method provided in the embodiment of the present application, when determining the configuration variable, since the representation manners of the configuration variable in different network devices may be different, for example, in routers of different vendors, the representation manner for the ip prefix may be 10.0.1.024, or 10.0.1.0\ 24. Therefore, configuration variables corresponding to different network devices can be obtained according to a network model of a target network during network configuration, and then the configuration variables are subjected to variable conversion to obtain standardized configuration variables, for example, the expression modes of ip prefixes are uniformly converted into 10.0.1.024.
To sum up, in the scheme provided in this embodiment of the present application, the configuration variables and the configuration items may be determined according to a network model of a target network during network configuration, because the network model includes a plurality of topology layers, where the topology layers are used to describe topology relationship information between network devices in the network, and an association relationship between the plurality of topology layers corresponds to a dependency sequence for data layer-by-layer encapsulation during data transmission, a difference between a current network and the target network may be quickly and accurately determined based on the network model, so as to obtain the configuration items and the configuration variables related to the network configuration, and generate the configuration commands according to the configuration variables and a configuration command template in the corresponding configuration items. Because the configuration items comprise a plurality of configuration actions for realizing the atomicity of the network configuration, and each configuration action corresponds to one configuration command template, the configuration commands can be split and combined in a modularized manner in the generation process according to the needs of the network configuration, and the configuration commands are automatically generated while the atomicity requirements in the network configuration are met.
Additionally, some portions of the present application may be applied as a computer program product, such as computer program instructions, which, when executed by a computer, may invoke or provide the method and/or solution according to the present application through the operation of the computer. Program instructions which invoke the methods of the present application may be stored on a fixed or removable recording medium and/or transmitted via a data stream on a broadcast or other signal-bearing medium and/or stored within a working memory of a computer device operating in accordance with the program instructions. Some embodiments according to the present application include a computing device as shown in fig. 6, which includes one or more memories 610 storing computer-readable instructions and a processor 620 for executing the computer-readable instructions, wherein when the computer-readable instructions are executed by the processor, the device is caused to perform the method and/or solution according to the embodiments of the present application.
Furthermore, some embodiments of the present application also provide a computer readable medium, on which computer program instructions are stored, the computer readable instructions being executable by a processor to implement the methods and/or aspects of the foregoing embodiments of the present application.
It should be noted that the present application may be implemented in software and/or a combination of software and hardware, for example, implemented using Application Specific Integrated Circuits (ASICs), general purpose computers or any other similar hardware devices. In some embodiments, the software programs of the present application may be executed by a processor to implement the above steps or functions. Likewise, the software programs (including associated data structures) of the present application may be stored in a computer readable recording medium, such as RAM memory, magnetic or optical drive or diskette and the like. Additionally, some of the steps or functions of the present application may be implemented in hardware, for example, as circuitry that cooperates with the processor to perform various steps or functions.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Claims (15)
1. A configuration command generation method, wherein the method comprises:
determining configuration variables and configuration items according to a network model of a target network during network configuration, wherein the network model comprises a plurality of topology layers, the topology layers are used for describing topology relation information among network devices in the network, the association relation among the topology layers corresponds to a dependency sequence for data layer-by-layer encapsulation during data transmission, the configuration items comprise a plurality of configuration actions for realizing network configuration atomicity, and each configuration action corresponds to a configuration command template;
and generating a configuration command according to the configuration variable and a configuration command template in the corresponding configuration item, wherein the configuration command is used for being issued to network equipment so that the network equipment executes the configuration command to realize a corresponding configuration action and perform network configuration.
2. The method of claim 1, wherein determining configuration variables and configuration items from a network model of a target network at the time of network configuration comprises:
if the network configuration is changed, determining configuration variables and configuration items according to the difference information of each topology layer in the first network model of the current network and the second network model of the target network
And if the network is configured as a newly-built network, determining configuration variables and configuration items based on the topological relation information of each topological layer in the second network model of the target network.
3. The method of claim 1 or 2, wherein the plurality of configuration actions includes a loading action for loading a configuration onto the network device, a validation action for validating the configuration loaded onto the network device, an invalidation action for invalidating the validated configuration that has not passed the check on the network device, and an undoing action for undoing the invalidated configuration on the network device.
4. The method of claim 3, wherein determining configuration variables and configuration items according to a network model of the target network at the time of network configuration comprises:
determining network equipment to be configured and a corresponding configuration variable according to a network model of a target network during network configuration;
determining a configuration specification of the network equipment to be configured, wherein the configuration specification contains configuration items of the network equipment to be configured;
and determining configuration items required for network configuration of the network equipment to be configured in the configuration specification according to the configuration variables, wherein the configuration command templates corresponding to the same configuration action are different under different configuration specifications.
5. The method of claim 4, wherein the configuration specification relates to at least any one of vendor information, system version information, and device model information of the network device.
6. The method of claim 4, wherein determining, according to the configuration variable, a configuration item required for network configuration of the network device to be configured in the configuration specification comprises:
determining a plurality of configuration items required for network configuration of the network equipment to be configured in the configuration specification according to the configuration variables;
generating a configuration command according to the configuration variables and the configuration command templates in the corresponding configuration items, wherein the method comprises the following steps:
acquiring a plurality of groups of first configuration commands according to the configuration variables and configuration command templates in the corresponding plurality of configuration items;
and combining the plurality of groups of first configuration commands according to the configuration specification to generate a configuration command.
7. The method of claim 6, wherein each set of first configuration commands includes at least configuration commands corresponding to a load action, an effect action, a check action, an invalidate action, and an undo action;
according to the configuration specification, combining the multiple groups of first configuration commands to generate a configuration command, comprising:
selecting a second configuration command corresponding to at least one configuration action from each group of first configuration commands according to the requirement of network configuration;
and combining the selected second configuration commands according to the configuration specification to generate configuration commands.
8. The method of claim 1, wherein determining the configuration variables from the network model of the target network at the time of network configuration comprises:
acquiring configuration variables corresponding to different network equipment according to a network model of a target network during network configuration;
and performing variable conversion on the configuration variables to obtain standardized configuration variables.
9. A configuration command generating device, wherein the device comprises:
the data processing device is used for determining configuration variables and configuration items according to a network model of a target network during network configuration, wherein the network model comprises a plurality of topology layers, the topology layers are used for describing topology relation information among network devices in the network, the incidence relation among the plurality of topology layers corresponds to a dependency sequence for data layer-by-layer encapsulation during data transmission, the configuration items comprise a plurality of configuration actions for realizing network configuration atomicity, and each configuration action corresponds to a configuration command template;
and the configuration generating device is used for generating a configuration command according to the configuration variable and the configuration command template in the corresponding configuration item, wherein the configuration command is used for being issued to the network equipment so as to enable the network equipment to execute the configuration command, so that the corresponding configuration action is realized, and the network configuration is carried out.
10. The device according to claim 9, wherein the data processing apparatus is configured to determine configuration variables and configuration items according to difference information of each topology layer in a first network model of a current network and a second network model of a target network when a network is configured to change networks; and when the network is configured as a newly-built network, determining configuration variables and configuration items based on the topological relation information of each topological layer in the second network model of the target network.
11. The device of claim 9 or 10, wherein the plurality of configuration actions includes a loading action for loading a configuration onto the network device, a validation action for validating the configuration loaded onto the network device, an invalidation action for invalidating the validated configuration that fails the validation on the network device, and an undoing action for undoing the invalidated configuration on the network device.
12. The device according to claim 11, wherein the data processing apparatus is configured to determine, according to a network model of a target network during network configuration, a network device to be configured and a corresponding configuration variable; determining a configuration specification of the network equipment to be configured, wherein the configuration specification contains configuration items of the network equipment to be configured; and determining configuration items required for network configuration of the network equipment to be configured in the configuration specification according to the configuration variables, wherein the configuration command templates corresponding to the same configuration action are different under different configuration specifications.
13. The device according to claim 12, wherein the data processing apparatus is configured to determine, according to the configuration variable, a plurality of configuration items required for network configuration of the network device to be configured in the configuration specification;
the configuration generating device is used for acquiring a plurality of groups of first configuration commands according to the configuration variables and the configuration command templates in the corresponding plurality of configuration items; and combining the plurality of groups of first configuration commands according to the configuration specification to generate a configuration command.
14. The device of claim 13, wherein each set of first configuration commands includes at least configuration commands corresponding to a load action, an effect action, a check action, an invalidate action, and an undo action;
the configuration generating device is used for selecting a second configuration command corresponding to at least one configuration action from each group of first configuration commands according to the requirement of network configuration; and combining the selected second configuration commands according to the configuration specification to generate configuration commands.
15. A computing device comprising a memory for storing computer program instructions and a processor for executing the computer program instructions, wherein the computer program instructions, when executed by the processor, trigger the device to perform the method of any of claims 1 to 8.
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| CN115102850B (en) * | 2022-06-28 | 2024-03-22 | 北京百度网讯科技有限公司 | Configuration comparison method, device, electronic equipment and storage medium |
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