CN115955505A - SDN control system, control method and platform based on computing power network - Google Patents

Abstract

This application provides an SDN control system, control method, and platform based on a computing power network, which relate to the technical field of communication networks. The SDN control system includes: a module manager, a device manager, a topology manager, an interface module, a storage module, and a link Discovery module and segment routing service module; Among them, the module manager is used to manage other modules; the device manager is used to discover the segment router; the topology manager is used to maintain the topology information of the segment router, and according to the topology information Finding routing information; interface module, used to provide interface services to user applications through application programming API interface; storage module, used to store configuration information of SDN control system and flow table information of segment routing; link discovery module, used for Discover link information; the segment routing service module is used to manage segment routers based on segment routing protocols, and can handle the rapid configuration, deployment, and dynamic adjustment of segment routers.

Description

SDN control system, control method and platform based on computing power network

technical field

The present application relates to the technical field of communication networks, and in particular to a computing power network-based SDN control system, control method and platform.

Background technique

At present, computing power network business is more and more widely used. In order to better serve the large-scale call of computing power network and realize the efficiency of computing power network, the SDN (Software Defined Network, software defined network) Features such as scalability, virtualization, and on-demand services can better meet the computing power of the computing power network and the environmental requirements of cloud computing, and gradually become an effective method to solve the functions of the computing power network.

At present, the existing computing power network control systems are all designed based on the Best Effort architecture. However, when the Best Effort architecture is applied to the computing power network, there are problems of poor scalability and usability of the computing power network control system.

Contents of the invention

The present application provides a computing power network-based SDN control system, control method and platform to overcome the problems of poor scalability and usability of the computing power network control system existing in the prior art.

In the first aspect, the present application provides an SDN control system based on a computing power network. The SDN control system is deployed between segment routers and user applications. The SDN control system includes: a module manager, a device manager, a topology a manager, an interface module, a storage module, a link discovery module and a segment routing service module;

Wherein, the module manager is used to manage the device manager, topology manager, interface module, storage module, link discovery module and segment routing service module;

The device manager is used to discover segment routers in the computing power network;

The topology manager is used to maintain the topology information of the segment routers of the computing power network, and to find routing information in the computing power network according to the topology information;

The interface module is configured to provide user applications with an interface service of the computing power network through an application programming API interface;

The storage module is configured to store configuration information of the SDN control system and flow table information of segment routing;

The link discovery module is used to discover link information in the computing power network;

The segment routing service module is configured to manage segment routers in the computing power network based on the segment routing protocol.

In one or more optional implementations of the present application, the SDN control system further includes: a stream cache module; the stream cache module is used to record various types of events in the computing power network, and store various The record information of various types of events is stored in the storage module; the storage module is configured to send the stored record information of various types of events to a module manager, a device manager, a topology manager, an interface module, The storage module, the link discovery module and the segment routing service module provide query interfaces.

In one or more optional implementation manners of the present application, the SDN control system further includes: a high reliability module; the high reliability module is configured to deploy a backup SDN control system between the segment router and the user application.

In one or more optional implementation manners of the present application, the SDN control system further includes: a distributed module; the distributed module is configured to add the SDN control system to an operator's SDN controller cluster.

In one or more optional implementations of the present application, the segment routing service module includes: a switching module, a tracking module, a monitoring module, and a control storage module; the switching module is used to manage The exchange of data packets of the segment router; the tracking module is used to track the encapsulation, analysis and exchange process of the segment routing protocol; the monitoring module is used to monitor and process the encapsulation, analysis and exchange in the computing power network The operating status of the computing power network during the processing; the control storage module is used to record the flow table information during the processing of encapsulation, parsing and exchange in the computing power network.

In a second aspect, the present application provides an SDN control method based on a computing power network, which is applied to the first aspect and an optional implementation of the first aspect, and the method includes:

The segment routing service module manages segment routers in the computing power network based on the segment routing protocol.

In one or more optional implementations of the present application, the segment routing service module manages the segment routers in the computing power network based on the segment routing protocol, including: generating a segment routing instance based on the service request, wherein the The segment routing instance carries multiple computing power tags, and the computing power tag is used to indicate the computing power resources required for the service request; based on the multiple computing power tags in the segment routing instance, the computing power is determined The locations and computing power resources of multiple target segment routers in the network; sending service requests to the multiple target segment routers, so that the multiple target segment routers execute corresponding computing power functions to respond to the service requests.

In one or more optional implementation manners of the present application, the computing power tag is a security identifier SID.

In a third aspect, the present application provides a platform device, including: at least one processor and a memory;

the memory stores computer-executable instructions;

The at least one processor executes the computer-executed instructions stored in the memory, so that the at least one processor executes the computing power network-based SDN described in any one of the second aspect and the optional implementation manner of the second aspect. Control Method.

In a fourth aspect, the present application provides a computer storage medium, where computer-executable instructions are stored in the computer-storage medium, and when the processor executes the computer-executable instructions, the second aspect and the optional implementation manners of the second aspect are realized The SDN control method based on computing power network described in any one.

The SDN control system, control method and platform based on the computing power network provided by this application, the SDN control system deploys corresponding functional modules to the SDN control system, that is, a module manager, a device manager, a topology manager, an interface module, The storage module, link discovery module, and segment routing service module realize rapid configuration, deployment, and dynamic adjustment of segment routers, and enhance the availability and controllability of the computing power network.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Figure 1 is a schematic diagram of a system architecture based on a computing power network provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of an architecture of an SDN control system based on a computing power network provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of the architecture of an SDN control system based on a computing power network provided by another embodiment of the present application;

FIG. 4 is a schematic flow diagram of a computing power network-based SDN control method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a hardware structure of a platform device provided by an embodiment of the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

In order to solve the problem of poor scalability and usability of the computing power network control system in the prior art, this application provides an SDN control system based on the computing power network. Through modularization, the SDN of the computing power network The division of control can quickly configure, deploy, and dynamically adjust the segment routers in the computing power network, which greatly improves the controllability and usability of the computing power network control system.

Referring to Fig. 1 and Fig. 2, Fig. 1 is a schematic diagram of a system architecture based on a computing power network provided by an embodiment of the present application, and Fig. 2 is a schematic diagram of an architecture of an SDN control system based on a computing power network provided by an embodiment of the present application. As shown in Figures 1 and 2, the SDN control system 100 provided by this embodiment is deployed between the segment router 200 and the user application 300, and the SDN control system 100 includes: a module manager 101, a device manager 102, a topology Manager 103 , interface module 104 , storage module 105 , link discovery module 106 and segment routing service module 107 .

Among them, the module manager 101 is used to manage the device manager 102 , the topology manager 103 , the interface module 104 , the storage module 105 , the link discovery module 106 and the segment routing service module 107 .

In this embodiment, the module manager 101 can provide users with a management interface for managing the device manager 102 , the topology manager 103 , the interface module 104 , the storage module 105 , the link discovery module 106 and the segment routing service module 107 . The user performs management operations on the device manager 102 , topology manager 103 , interface module 104 , storage module 105 , link discovery module 106 and segment routing service module 107 through operations on the management interface.

The device manager 102 is configured to discover segment routers in the computing power network.

In this embodiment, the device manager 102 is configured to discover segment routers in the domain of the computing power network, and configure unique IDs (Identity Documents) for the segment routers. The device management manager requests access to the segment router through Packet In (data packet input), and performs device management classification according to the obtained device information of the segment router. Wherein, the equipment information includes but not limited to the MAC address (Media Access Control Address, physical address) and the VLAN (Virtual Local Area Network, virtual local area network) address of the segment router.

The topology manager 103 is used to maintain the topology information of the segment routers of the computing power network, and to search for routing information in the computing power network according to the topology information.

In this embodiment, the topology manager 103 is used to maintain and store topology information of segment routers of the computing power network (stored as an instance), and to find routes in the computing power network based on the topology information.

The topology manager 103 is also configured to perform topology calculation based on the link information obtained from the link discovery module 106 to obtain new topology information; if the new topology information changes compared with the stored topology information, it is new Create a new instance of topology information for storage, and send notification messages of topology information changes to users.

The interface module 104 is configured to provide interface services of the computing power network to user applications through an application programming API (Application Programming Interface, application programming) interface.

In this embodiment, the interface module 104 may specifically be a Rest API (Resource RepresentationalState Transfer Application Programming Interface, application programming interface following the REST architecture specification) module. The Rest API module provides interface services for computing power networks for upper-layer user applications. Developers can implement specific functional requirements through the Rest API module.

Wherein, the user application may be various Apps (Application, application program).

The storage module 105 is configured to store configuration information of the SDN control system and flow table information of segment routing.

In this embodiment, the configuration information of the SDN control system and the flow table information of the segment routing may be stored in a database corresponding to the storage module 105 . The database may be a non-relational database.

The non-relational database of the storage module 105 can be divided into two layers, one of which is a memory for storing hot data; the other is a hard disk for storing non-hot data. Through this layered processing of data, the processing efficiency of the SDN control system can be improved.

Link discovery module 106, configured to discover link information in the computing power network.

In this embodiment, the link discovery module 106 queries links in the computing power network through a link search algorithm, and obtains corresponding link information.

The segment routing service module 107 is configured to manage the segment routers in the computing power network based on the segment routing protocol.

Specifically, the segment routing service module 107 includes: an exchange module 1071 , a tracking module 1072 , a monitoring module 1073 and a control storage module 1074 .

The switching module 1071 is used to manage the switching of data packets of the segment router based on the segment routing protocol;

A tracking module 1072, configured to track the encapsulation, resolution and exchange process of the segment routing protocol;

The monitoring module 1073 is used to monitor the running status of the computing power network during the processing of encapsulation, resolution and exchange in the computing power network;

The control storage module 1074 is used to record the flow table information in the process of encapsulation, resolution and exchange in the computing power network.

In this embodiment, the segment routing service module 107 is mainly used to process the relevant matters of the segment routing protocol (SegmentRouting protocol), and is responsible for the encapsulation, analysis and exchange of the Segment Routing protocol, and through the Segment Routing flow table and input data Analyze the packets and monitor the running status of the computing power network.

In summary, it can be seen from the description of the above embodiments that by deploying corresponding functional modules to the SDN control system, that is, module manager, device manager, topology manager, interface module, storage module, link discovery module and segment routing The service module realizes rapid configuration, deployment, and dynamic adjustment of segment routers, and enhances the availability and controllability of the computing power network.

Referring to FIG. 3 , FIG. 3 is a schematic structural diagram of an SDN control system based on a computing power network provided for another embodiment of the present application. On the basis of the embodiment in FIG. 2 , the computing power network-based SDN control system further includes: a stream caching module 108 .

The stream cache module 108 is configured to record various types of events in the computing power network, and store the record information of various types of events in the storage module 105 .

The storage module 105 is used to provide query interfaces for the stored record information of various types of events to the module manager, device manager, topology manager, interface module, storage module, link discovery module and segment routing service module .

In this embodiment, when using the module manager, device manager, topology manager, interface module, storage module, link discovery module and segment routing service module, the user can access the query interface provided by the storage module 105 The record information of various types of events stored in the storage module 105 realizes query of various types of events.

Continuing to refer to FIG. 3 , in an optional manner provided by the embodiment of the present application, the computing power network-based SDN control system further includes: a high reliability module 109 .

The high reliability module 109 is used to deploy a backup SDN control system between the segment router and the user application.

In this embodiment, the highly reliable module 109 is also called an HA (Highly Available, highly reliable) module. The SDN control system is at the core of the computing power network. If the SDN control system fails, it will lead to the paralysis of the computing power network. The control system realizes the mutual backup of the SDN control system.

Continuing to refer to FIG. 3 , in an optional manner provided by the embodiment of the present application, the computing power network-based SDN control system further includes: a distributed module 110 .

The distributed module 110 is configured to add the SDN control system to the operator's SDN controller cluster.

In this embodiment, the processing capacity of the single-point SDN control system is limited, and there may be a failure of the single-point SDN control system. Through the distributed module 110, the user can add the SDN control system to the SDN controller cluster of the operator, and the user can Deploy through any SDN control system in the SDN controller cluster.

Referring to FIG. 4 , FIG. 4 is a schematic flowchart of a computing power network-based SDN control method provided by an embodiment of the present application. The SDN control method based on the computing power network is applied to the SDN control system based on the computing power network in the above embodiments. The process of the SDN control based on the computing power network, that is, the segment routing service module is based on the segment routing protocol management algorithm The process of a segment router in a force network, specifically including

S401: Based on the service request, generate a segment routing instance, where the segment routing instance carries multiple computing power tags, and the computing power tags are used to indicate the computing power resources required by the service request.

Specifically, the computing power tag is a security identifier SID (Security Identifiers, SID).

S402: Based on the multiple computing power labels in the segment routing instance, determine locations and computing power resources of multiple target segment routers in the computing power network.

S403: Send the service request to multiple target segment routers respectively, so that the multiple target segment routers execute corresponding computing functions to respond to the service request.

In this embodiment, the segment routing (Segment Routing, SR) may adopt the source routing paradigm. SRv6 is an instance of segment routing on the Internet Protocol version (Ipv6) data plane. In the segment routing instance of SRv6, the security identifier SID is a 128-bit IPv6 address. In order to forward the data packet on the explicit path composed of multiple security identifiers SIDs, the SID list corresponding to the multiple security identifiers SIDs may be placed in the extension header of the packet of the data packet. Any segment router (network device) along the explicit path can read the security identifier SID in the message of the data packet to obtain the locations and computing power resources of multiple target segment routers.

Segment routers (network devices) may have packet-by-packet reading capabilities. Encoding an explicit path involving multiple network devices into a single IPv6 address may allow network devices to efficiently process SRv6 packets. Furthermore, encoding the explicit path into a single IPv6 address may allow source network devices to process packets efficiently by eliminating the need to add SRH to the IPv6 header.

In one or more embodiments, encoding the explicit path as a set of Segments may allow the source network device to encode more segments for a given capability of the network device, depending on the source network device's ability to encode the maximum number of IPv6 addresses with high performance.

It should be noted that in the segment router, the source router and the destination router can communicate with each other according to the SRv6 protocol. Here, the computing security identifier SID can be associated with the computing power tag processing of SRv6. The power label processing function of SRv6 performed at the source router may involve generating a new IP message with a segment routing header including a segment identifier associated with the function corresponding to the power label message, and sending the new IP message for the destination router to receive. This new IP message may be an SRv6 message, in which one or more of the extended headers of the message contain the end marker SID. In some implementations, the new SRv6 messages may be ICMPv6 messages. The destination router may perform a hashtag function in response to receiving the hashtag message.

In summary, it can be known from the description of the above embodiments that by adding multiple computing power tags to the segment routing instance corresponding to the service request, the computing power tags can be used to determine the location and computing power resources of the segment router required for the service request. Realize the computing power request service of the computing power network.

Referring to FIG. 5 , FIG. 5 is a schematic diagram of a hardware structure of a platform device provided by an embodiment of the present application. As shown in FIG. 5, the platform device 50 of this embodiment includes: a processor 501 and a memory 502;

The memory 502 is used to store computer-executable instructions;

The processor 501 is configured to execute the computer-executable instructions stored in the memory, so as to implement the various steps performed in the above embodiments of the computing power network-based SDN control method. For details, refer to the related descriptions in the foregoing method embodiments.

Optionally, the memory 502 can be independent or integrated with the processor 501 .

When the memory 502 is set independently, the platform device further includes a bus 503 for connecting the memory 502 and the processor 501 .

The embodiment of the present application also provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above-mentioned computing power network-based SDN control methods.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods, for example, multiple modules can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to implement the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing unit, each module may exist separately physically, or two or more modules may be integrated into one unit. The units formed by the above modules can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The above-mentioned software function modules are stored in a storage medium, and include several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor execute some steps of the methods described in various embodiments of the present application.

It should be understood that the above-mentioned processor may be a central processing unit (Central Processing Unit, referred to as CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, referred to as DSP), application specific integrated circuits (Application Specific Integrated Circuit, referred to as ASIC) and so on. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in conjunction with the invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

The storage may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage, and may also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disk.

The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, the buses in the drawings of the present application are not limited to only one bus or one type of bus.

The above-mentioned storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable In addition to programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in Application Specific Integrated Circuits (ASIC for short). Of course, the processor and the storage medium can also exist in the electronic device or the main control device as discrete components.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.

Claims (10)

1. A computing-force network based SDN control system deployed between a segment router and a user application, the SDN control system comprising: the system comprises a module manager, an equipment manager, a topology manager, an interface module, a storage module, a link discovery module and a segmented routing service module;

the module manager is used for managing the equipment manager, the topology manager, the interface module, the storage module, the link discovery module and the segmented routing service module;

the device manager is used for discovering the segmented router in the computational power network;

the topology manager is used for maintaining topology information of a segmented router of the computational power network and searching routing information in the computational power network according to the topology information;

the interface module is used for providing interface services of the computing network for user application through an application programming API (application programming interface);

the storage module is used for storing configuration information of the SDN control system and flow table information of the segment routing;

the link discovery module is used for discovering link information in the computing power network;

and the segmented routing service module is used for managing a segmented router in the computational power network based on a segmented routing protocol.

2. The computing-power-network-based SDN control system of claim 1, further comprising: a stream cache module;

the flow cache module is used for recording various types of events in the computational power network and storing the recording information of the various types of events in the storage module;

the storage module is used for providing the stored record information of the events of various types for a query interface to the module manager, the device manager, the topology manager, the interface module, the storage module, the link discovery module and the segmented routing service module.

3. The computing-power-network-based SDN control system of claim 1, further comprising: a highly reliable module;

the high-reliability module is used for deploying a backup SDN control system between the segmented router and the user application.

4. The computing-power-network-based SDN control system of claim 1, further comprising: a distributed module;

the distributed module is used for adding the SDN control system into an SDN controller cluster of an operator.

5. The computing-force network-based SDN control system of claim 1, wherein the segment routing service module comprises: the device comprises a switching module, a tracking module, a monitoring module and a control storage module;

the switching module is used for managing the switching of the data packets of the segmented router based on the segmented routing protocol;

the tracking module is used for tracking the processing processes of encapsulation, analysis and exchange of the segmented routing protocol;

the monitoring module is used for monitoring the running state of the computational power network in the processing process of packaging, analysis and exchange in the computational power network;

and the control storage module is used for recording flow table information in the processing processes of encapsulation, analysis and exchange in the computational power network.

6. A computing power network-based SDN control method applied to the computing power network-based SDN control system according to any one of claims 1 to 5, the method comprising:

the segment routing service module manages segment routers in the computational power network based on a segment routing protocol.

7. The computing power network-based SDN control method of claim 6, wherein the segment routing service module manages segment routers in the computing power network based on a segment routing protocol, comprising:

generating a segmented routing instance based on a service request, wherein the segmented routing instance carries a plurality of computation power labels, and the computation power labels are used for indicating computation power resources required by the service request;

determining locations and computing resources of a plurality of target segment routers in the computing network based on a plurality of computing power labels in the segment routing instance;

and respectively sending the service request to a plurality of target segmented routers so that the plurality of target segmented routers execute corresponding computing functions to respond to the service request.

8. The computing-power-network-based SDN control method of claim 7, wherein the computing power label is a Security Identifier (SID).

9. A stage apparatus, comprising: a processor and a memory;

the memory stores computer execution instructions;

the processor executing the memory-stored computer-executable instructions cause the processor to perform the computing-power-network-based SDN control method of any one of claims 6 to 8.

10. A computer storage medium having computer executable instructions stored thereon, wherein a processor, when executing the computer executable instructions, implements the computing power network-based SDN control method according to any one of claims 6 to 8.

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