CN116346601A - Method and device for guaranteeing configuration consistency of network element equipment - Google Patents

Method and device for guaranteeing configuration consistency of network element equipment Download PDF

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Publication number
CN116346601A
CN116346601A CN202310249667.4A CN202310249667A CN116346601A CN 116346601 A CN116346601 A CN 116346601A CN 202310249667 A CN202310249667 A CN 202310249667A CN 116346601 A CN116346601 A CN 116346601A
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configuration
agent
network element
transaction
library
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张望成
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Tianyi Cloud Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/23—Updating
    • G06F16/2365—Ensuring data consistency and integrity
    • 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
    • H04L41/04—Network management architectures or arrangements
    • H04L41/046—Network management architectures or arrangements comprising network management agents or mobile agents therefor
    • 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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0681—Configuration of triggering conditions
    • 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
    • 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
    • H04L41/085—Retrieval of network configuration; Tracking network configuration history
    • 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
    • H04L41/0876—Aspects of the degree of configuration automation
    • H04L41/0886—Fully automatic configuration

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a method and a device for guaranteeing the configuration consistency of network element equipment, and relates to the technical field of Internet communication. The method for guaranteeing the configuration consistency of the network element equipment comprises the following steps: after the leader agent receives the configuration package sent by the controller, the leader agent and the follower agent update synchronously according to the raft protocol, and after updating the state library according to the transaction added by the transaction library, the leader agent and the follower agent send a confirmation signal to the controller. The consistency of configuration in the distributed nodes is guaranteed through the raft protocol, the expandability of the system is improved by introducing direct interaction of the agent decoupling controller and the network element, threshold judgment is added to the network element and the agent synchronization, full synchronization can be automatically selected according to the threshold under the condition that the configuration is more missing, and incremental synchronization is performed under the condition that the configuration is less missing.

Description

Method and device for guaranteeing configuration consistency of network element equipment
Technical Field
The present invention relates to the field of internet communications technologies, and in particular, to a method and an apparatus for guaranteeing consistency of network element configuration.
Background
SDN (Software Defined Network) is a software defined network. Because the SDN technology has the capability of carrying out centralized configuration, management, monitoring and programming on the network, the automation and individuation requirements of large-scale network equipment can be met, and the SDN technology is widely applied in the field of cloud computing.
SDN is mainly divided into a control plane and a data plane, and an SDN controller realizes the functions of planning network topology, calculating and planning routes, generating and issuing flow tables, managing and controlling network elements and the like. The data plane is generally responsible for performing forwarding of user data by the virtual network element device VNE (virtual network element), and forwarding entries required in the forwarding process are generated and issued by the control layer. Therefore, the controller has a large-scale configuration synchronization to the VNE, and in an actual production environment, various reasons may cause inconsistent configuration in the network element device, such as abnormal network element and network management interfaces, network jitter, network element downtime, etc., so that it is a very challenging direction how to ensure the consistency of the configuration of the VNE and the controller.
One scheme used in the industry at present is that a controller and a VNE device periodically perform account checking, and the VNE device is required to pull the total configuration information from the controller during the account checking process, compare the configuration information of the controller with the configuration information of a network element device one by one, find out inconsistent places, and perform corresponding CRUD operation. In this scheme, since the pulling configuration needs to be periodically compared, if the pulling frequency is too fast, it may consume a large amount of bandwidth of computing resources, and if the pulling is too slow, it may also cause time extension of inconsistent states of the VNE device and the controller.
Disclosure of Invention
According to the method and the device for guaranteeing the consistency of the network element equipment configuration, the problems that a large amount of bandwidth-consuming computing resources are consumed due to too fast pulling frequency in the conventional method for periodically checking accounts through the controller and the VNE equipment, and time of inconsistent states of the VNE equipment and the controller is prolonged due to too slow pulling are solved, strong consistency is guaranteed between the agent and the agent through a shift protocol, the network element and the agent are synchronized in configuration, and final consistency of overall configuration is guaranteed.
The embodiment of the application provides a method for guaranteeing the configuration consistency of network element equipment, which comprises the following steps:
s1, after a leader agent receives a configuration packet sent by a controller, synchronously updating the leader agent and the fol lower agent according to a raft protocol;
s2, the leader agent and the fol lower agent update the state library according to the transaction added by the transaction library and then send a confirmation signal to the controller;
s3, updating the state library by the aid of the leader agent and the fol lower agent according to the added transaction of the transaction library, and simultaneously, carrying out configuration updating by the fol lower agent according to the configuration id requested by the network element.
Further, the synchronous update of the leader agent and the fol lower agent in S1 includes a first stage and a second stage, where the first stage is to send a configuration packet to the fol lower agent, the first stage is to write only the transaction library, the second stage is to confirm the stage, and the second stage modifies the state library according to the transaction in the first stage.
Further, the first stage specifically includes the following steps:
the method comprises the steps that firstly, a self-increment id is assigned to a configuration packet sent by a controller after the configuration packet is received by a leader agent;
and secondly, verifying whether the configuration in the configuration package is valid, synchronizing the configuration package to the fol lower agent if the configuration package is valid, and feeding back an error if the configuration package is invalid.
Further, the second stage specifically includes the following steps:
the method comprises the steps that firstly, after the verification of the fol lower agent is successful, a leader agent receives a confirmation signal sent by the fol lower agent;
step two, after the leader agent collects the confirmation signal of the half, the confirmation signal is sent to the fol lower agent;
thirdly, writing the configuration into a transaction library by a leader agent and a fol lower agent;
and fourthly, the leader agent and the fol lower agent update the state library according to the added transaction of the transaction library and then send a confirmation signal to the controller.
Further, the controller receives a configuration request for the resource before sending the configuration packet, modifies the related resource, sets the synchronization signal as error, and sets the synchronization signal as correct after receiving the acknowledgement signal sent by the leader agent.
Further, the transaction library in S2 is a configuration transaction received in sequence, and a self-increment id is generated for each configuration, and the state library is a full-quantity library of all the current configurations, and can be obtained from each transaction of the transaction library through state transition.
Further, the step S3 of performing configuration update by the fol lower agent according to the configuration id requested by the network element specifically includes:
s31, receiving a configuration id of a network element timing request by the fool lower agent;
s32, comparing the received configuration id with the self configuration id of the fool lower agent, judging whether the received configuration id is larger than a set threshold value, if so, starting full synchronization, and if not, starting incremental updating.
Further, when full synchronization is performed, the configuration is given from the state library;
when incremental updating is performed, incremental synchronization is performed from the transaction library according to the transaction id.
The embodiment of the application provides a device for guaranteeing the configuration consistency of network element equipment, a synchronous updating module, a confirming module and a network element configuration updating module, wherein:
the synchronous updating module is used for synchronously updating the file lower agent with the leader agent through a shift protocol after the file lower agent receives the configuration packet sent by the controller;
the confirmation module is used for transmitting a confirmation signal to the controller by the leader agent after the state library is updated according to the transaction added by the transaction library by the fol lower agent and the leader agent;
the network element configuration updating module is used for updating the state library according to the transaction added by the transaction library by the fol lower agent and the leader agent, and simultaneously updating the configuration of the fol lower agent according to the configuration id requested by the network element.
The embodiment of the application provides a computer readable storage medium for storing a program, which when executed by a processor, realizes a method for guaranteeing the consistency of network element equipment configuration.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
the consistency of configuration in the distributed nodes is guaranteed through the raft protocol, the expandability of the system is improved by introducing direct interaction of the agent decoupling controller and the network element, threshold judgment is added to the network element and the agent synchronization, full synchronization can be automatically selected according to the threshold under the condition that the configuration is more missing, and incremental synchronization is performed under the condition that the configuration is less missing.
Drawings
Fig. 1 is a flowchart of a method for guaranteeing network element device configuration consistency according to a first embodiment of the present application;
fig. 2 is a block diagram of an apparatus for guaranteeing configuration consistency of network element devices according to the first embodiment of the present application;
fig. 3 is a flowchart of synchronization between a Leader Agent and a fool lower Agent for guaranteeing consistency of network element device configuration according to an embodiment of the present application;
fig. 4 is a synchronization flow chart of a network element and a agent in a method for guaranteeing consistency of network element device configuration according to an embodiment of the present application.
Detailed Description
According to the method and the device for guaranteeing the consistency of the network element equipment configuration, the problems that a large amount of bandwidth-consuming computing resources are consumed due to too fast pulling frequency in the conventional method for periodically checking accounts through the controller and the VNE equipment, the VNE equipment and the controller are inconsistent in state and time is prolonged due to too slow pulling are solved, the consistency of the configuration in the distributed nodes is guaranteed through a shift protocol, the expandability of the system is improved by introducing the direct interaction of the agent decoupling controller and the network element, threshold judgment is increased by synchronizing the network element and the agent, full synchronization can be automatically selected under the condition that the configuration is lack more according to the threshold, and incremental synchronization is performed under the condition that the configuration is lack.
The technical scheme in the embodiment of the application aims to solve the problems that the existing traffic flow prediction method ignores spatial dependence and a convolutional neural network cannot effectively capture spatial dependence of traffic conditions, and the overall thought is as follows:
the controller and the network element are decoupled, the former direct communication between the controller and the network element is changed into communication with the agent, the agent is a component based on a shift protocol introduced by the patent, the strong consistency is ensured between the agent and the agent through the shift protocol, the network element and the agent are configured synchronously, and the final consistency of the whole configuration is further ensured.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, a flowchart of a method for guaranteeing network element equipment configuration consistency provided in an embodiment of the present application is applied to a device for guaranteeing network element equipment configuration consistency, where the method includes the following steps:
s1, after a leader agent receives a configuration packet sent by a controller, synchronously updating the leader agent and the fol lower agent according to a raft protocol;
s2, the leader agent and the fol lower agent update the state library according to the transaction added by the transaction library and then send a confirmation signal to the controller;
s3, updating the state library by the aid of the leader agent and the fol lower agent according to the added transaction of the transaction library, and simultaneously, carrying out configuration updating by the fol lower agent according to the configuration id requested by the network element.
Further, as shown in fig. 3, the synchronous update of the leader agent and the fool lower agent in S1 includes a first stage and a second stage, where the first stage is to send a configuration packet to the fool lower agent, the first stage is to write only the transaction library, the second stage is to confirm the stage, and the second stage modifies the state library according to the transaction in the first stage.
Further, the first stage specifically includes the following steps:
the method comprises the steps that firstly, a self-increment id is assigned to a configuration packet sent by a controller after the configuration packet is received by a leader agent;
and secondly, verifying whether the configuration in the configuration package is valid, synchronizing the configuration package to the fol lower agent if the configuration package is valid, and feeding back an error if the configuration package is invalid.
Further, the second stage specifically includes the following steps:
the method comprises the steps that firstly, after the verification of the fol lower agent is successful, a leader agent receives a confirmation signal sent by the fol lower agent;
step two, after the leader agent collects the confirmation signal of the half, the confirmation signal is sent to the fol lower agent;
thirdly, writing the configuration into a transaction library by a leader agent and a fol lower agent;
and fourthly, the leader agent and the fol lower agent update the state library according to the added transaction of the transaction library and then send a confirmation signal to the controller.
In this embodiment, the loader agent and the fool lower agent are synchronously divided into two phases, one phase is sending, the phase is only writing into the transaction library, the second phase is confirming, and the phase can obtain the transaction modification state library according to the first phase.
The method comprises the steps that a Leader agent receives a configuration packet sent by a controller, assigns a self-increment id to the received configuration packet, verifies configuration in the configuration packet to determine whether the configuration is valid, returns error information if the configuration is invalid, synchronizes the configuration packet to a low agent if the verification result is valid, and completes a first stage;
in the second stage, the fol lower agent performs secondary verification, after the verification is successful, confirmation information is sent to the Leader agent, after the Leader agent collects the confirmation information of the past half, the confirmation information is sent to the fol lower agent, the verification is finished, and then the fol lower agent and the Leader agent are finished.
Further, the controller receives a configuration request for the resource before sending the configuration packet, modifies the related resource, sets the synchronization signal as error, and sets the synchronization signal as correct after receiving the acknowledgement signal sent by the leader agent.
In this embodiment, when the configuration received by the controller is an operation on a certain resource, the configuration in the database of the controller is updated, but the synchronization flag is set to false, then the configuration is sent to the leader agent, the leader agent synchronizes to other fol lower agents according to the raft protocol, after the synchronization is completed, the leader agent sends an ack to the controller, and the controller modifies the database to set the flag of the configuration to true.
When the controller connects to the synchronization agent, if the agent is not a leader, the agent will transfer the request to the leader agent to complete the request.
Further, the transaction library in S2 is a configuration transaction received in sequence, and a self-increment id is generated for each configuration, and the state library is a full-quantity library of all the current configurations, and can be obtained from each transaction of the transaction library through state transition.
Further, as shown in fig. 4, the process of performing configuration update by the fol lower agent in S3 according to the configuration id requested by the network element specifically includes:
s31, receiving a configuration id of a network element timing request by the fool lower agent;
s32, comparing the received configuration id with the self configuration id of the fool lower agent, judging whether the received configuration id is larger than a set threshold value, if so, starting full synchronization, and if not, starting incremental updating.
In this embodiment, first, in the step of synchronizing the leader agent and the fool lower agent, the agent sends a notification to the network element when finishing the update of the transaction status, and the network element updates its configuration in time.
On the other hand, when the network element is restarted or the network element is newly on line, the agent can synchronize the latest configuration with the fol lower agent first, and meanwhile, the network element can update the state of the network element according to the synchronized configuration. The network element agent will save a transaction id that will turn on full synchronization if a certain threshold is exceeded and turn on incremental updates if only few configurations are missing compared to the global transaction id.
As shown in fig. 2, in order to provide a device structure diagram for guaranteeing network element device configuration consistency in the embodiment of the present application, a device for guaranteeing network element device configuration consistency in the embodiment of the present application includes a synchronization update module, a confirmation module, and a network element configuration update module, where:
the synchronous updating module is used for synchronously updating the file lower agent with the leader agent through a shift protocol after the file lower agent receives the configuration packet sent by the controller;
the confirmation module is used for transmitting a confirmation signal to the controller by the leader agent after the state library is updated according to the transaction added by the transaction library by the fol lower agent and the leader agent;
the network element configuration updating module is used for updating the state library according to the transaction added by the transaction library by the fol lower agent and the leader agent, and simultaneously updating the configuration of the fol lower agent according to the configuration id requested by the network element.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the consistency of configuration in the distributed nodes is guaranteed through the raft protocol, the expandability of the system is improved by introducing direct interaction of the agent decoupling controller and the network element, threshold judgment is added to the network element and the agent synchronization, full synchronization can be automatically selected according to the threshold under the condition that the configuration is more missing, and incremental synchronization is performed under the condition that the configuration is less missing.
A computer readable storage medium storing a program which when executed by a processor implements a method of ensuring consistency of network element device configuration.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The method for guaranteeing the configuration consistency of the network element equipment is characterized by comprising the following steps:
s1, after a leader agent receives a configuration packet sent by a controller, synchronously updating the leader agent and the follower agent according to a raft protocol;
s2, the leader agent and the follower agent update the state library according to the transaction added by the transaction library and then send a confirmation signal to the controller;
s3, updating the state library according to the transaction added by the transaction library by the leader agent and the follower agent, and simultaneously, performing configuration updating by the follower agent according to the configuration id requested by the network element.
2. The method for guaranteeing consistency of network element equipment configuration as claimed in claim 1, wherein the step of synchronously updating the leader agent and the follower agent in S1 includes a first stage and a second stage, the first stage is to send a configuration packet to the follower agent, the first stage is to write only a transaction library, the second stage is to confirm the stage, and the second stage is to modify a state library according to transactions in the first stage.
3. The method for guaranteeing consistency of network element equipment configuration according to claim 2, wherein the first stage specifically comprises the following steps:
the method comprises the steps that firstly, a self-increment id is assigned to a configuration packet sent by a controller after the configuration packet is received by a leader agent;
and secondly, verifying whether the configuration in the configuration package is valid, synchronizing the configuration package to a follow agent if the configuration package is valid, and feeding back an error if the configuration package is invalid.
4. The method for guaranteeing consistency of network element equipment configuration according to claim 2, wherein the second stage specifically comprises the following steps:
the method comprises the steps that firstly, after the verification of the follower agent is successful, a response signal sent by the follower agent is received by the leader agent;
step two, after the leader agent collects the confirmation signal of the half, the confirmation signal is sent to the follower agent;
thirdly, writing the configuration into a transaction library by a leader agent and a follower agent;
and fourthly, the leader agent and the follower agent update the state library according to the added transaction of the transaction library and then send a confirmation signal to the controller.
5. The method for guaranteeing consistency of configuration of network element equipment according to claim 1, wherein the controller receives a request for configuration of resources before sending the configuration packet, modifies related resources, sets a synchronization signal as error, and sets the synchronization signal as correct after receiving a confirmation signal sent by a leader agent.
6. The method for guaranteeing consistency of network element equipment configuration according to claim 1, wherein the transaction library in S2 is a configuration transaction received in sequence, and a self-increment id is generated for each configuration, and the state library is a full-quantity library of all configurations at present, and can be obtained from each transaction of the transaction library through state transition.
7. The method for guaranteeing consistency of network element equipment configuration according to claim 1, wherein the process of performing configuration update by the follower agent in S3 according to the configuration id requested by the network element specifically includes:
s31, the follower agent receives the configuration id of the network element timing request;
s32, comparing the received configuration id with the self configuration id of the follower agent, judging whether the received configuration id is larger than a set threshold value, if so, starting full synchronization, and if not, starting incremental update.
8. The method for guaranteeing consistency of network element equipment configuration as claimed in claim 7, wherein: when full synchronization is performed, configuration is given from a state library;
when incremental updating is performed, incremental synchronization is performed from the transaction library according to the transaction id.
9. The device for guaranteeing the configuration consistency of the network element equipment is characterized by comprising a synchronous updating module, a confirming module and a network element configuration updating module, wherein:
the synchronous updating module is used for synchronously updating the player agent with the player agent through a shift protocol after the player agent receives the configuration packet sent by the controller;
the confirmation module is used for sending a confirmation signal to the controller by the leader agent after the state library is updated according to the transaction added by the transaction library by the follower agent and the leader agent;
the network element configuration updating module is used for updating the state library according to the transaction added by the transaction library by the follower agent and the leader agent, and simultaneously, the follower agent performs configuration updating according to the configuration id requested by the network element.
10. A computer readable storage medium storing a program, wherein the program when executed by a processor implements a method of ensuring network element device configuration consistency as claimed in any of claims 1 to 8.
CN202310249667.4A 2023-03-12 2023-03-12 Method and device for guaranteeing configuration consistency of network element equipment Pending CN116346601A (en)

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Application Number Priority Date Filing Date Title
CN202310249667.4A CN116346601A (en) 2023-03-12 2023-03-12 Method and device for guaranteeing configuration consistency of network element equipment

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CN116346601A true CN116346601A (en) 2023-06-27

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