CN105553811A - Network service realization method based on multi-VTN combination in SDN architecture - Google Patents
Network service realization method based on multi-VTN combination in SDN architecture Download PDFInfo
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- CN105553811A CN105553811A CN201510927904.3A CN201510927904A CN105553811A CN 105553811 A CN105553811 A CN 105553811A CN 201510927904 A CN201510927904 A CN 201510927904A CN 105553811 A CN105553811 A CN 105553811A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/805—QOS or priority aware
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Abstract
The present invention discloses a network service realization method based on a multi-VTN combination in an SDN architecture. The method comprises a step of creating multiple VTNs according to the service characteristics of a network application and setting the price and service quality requirement of each VTN, a step of selecting an optimal physical realization mechanism for each VTN according to the price and service quality requirement of each VTN, a step of selecting a group of network protocols in an existing network protocol set according to the service quality requirement of each VTN and improving data transmission efficiency through cutting the network protocols, a step of coordinating the price and service quality of each VTN through centralized control and supporting the data transmission of a whole network application. The network service realization method based on a multi-VTN combination in an SDN architecture is employed, network applications are divided according to services, a VTN network is created for each service at the same time according to a price factor and a service quality requirement, suitable realization mechanism and network agreement are selected, and the transmission of the network data is coordinated through centralized control.
Description
Technical field
The present invention relates to many tenants virtual network (VTN) field, particularly relate in a kind of SDN framework based on the Network implementation method that many VTN combine.
Background technology
Software defined network (SoftwareDefinedNetworking is called for short SDN) is a kind of novel network architecture and technology, originates from the CleanSlate research topic of Stanford University in 2006.Be primarily characterized in that control plane is separated with Forwarding plane, open interface and centralized control.Forwarding plane is separated with control plane and network can be regarded as the virtual entity of a logic OR, by abstract for forwarding behavior; Standardized open interface is provided, the Seamless integration-of application and network can be realized; Centralized control then can obtain the global information of Internet resources (eg. stream, function, link, virtual tenant network) and carry out overall scheduling and optimization according to business demand to resource.The SDN main body frame of current main-stream has the ONF(OpenNetworkingFoundation proposed from user perspective, open network foundation) SDN framework, from the ETSI(EuropeanTelecommunicationsStandardsInstitute that Virtual network operator angle proposes, european telecommunication markization association) NFV(NetworkFunctionsVirtualization, network function is virtual) framework and the OpenDaylight that combines proposition by industry giant Cisco, IBM, Microsoft etc. for specific implementation SDN framework increase income SDN project.OpenDaylight open source projects proposed in April, 2013, was intended to break the monopolization of large manufacturer for the network hardware, drove network technology innovation.
VTN is for providing an application of many tenants virtual network in SDN controller.The system configuration network being generally each department needs the human and material resources of at substantial, equally, need for each tenant installs various network application, and be difficult to share these resources, therefore, the network designing, dispose, manage whole complexity is a heavy task.In order to solve this difficult problem, OpenDaylight proposes to use VTN in the controller, and the unique distinction of VTN is logical abstraction platform.Logic level is separated with physical layer by VTN completely, and user can design, utilize any required network, and without the need to the topological structure of understanding physical network and bandwidth restriction.
VTN allows user to carry out define grid according to the perception of L2/L3 layer network.It can thus be appreciated that the network based on VTN design can be mapped to bottom physical equipment automatically, and be configured on the independently switch of support SDN control protocol.So not only shield bottom-layer network complexity and also can better network resource administration, decrease setup time and the configuration error of network service.
Increase income in the core of VTN code, realized by C++ exploitation, configuration virtual network model is an important API of SDN controller.OpenDaylightVTN function mainly comprises: (1) network virtualization function.The mapping of virtual network framework, physical network resource, vBridge function, vRouter function, stream filtering function; (2) various controller coordinated control network; (3) coordination between OpenFlow network and L2/3 layer network; (4) VTNAPI.
Service quality (QoS), refers to that a network can utilize various basic technology, for the network service of specifying provides better service ability, is a kind of security mechanism of network, and with solving a kind of technology of the problem such as network delay and obstruction.Under normal circumstances, if network is only for specific timeless application system, do not need QoS, such as Web application, or E-mail is arranged.But to key application and multimedia application just very necessary.When network over loading or congested time, QoS can guarantee that important service amount is not postponed or abandons, and ensures the Effec-tive Function of network simultaneously.Computer network is made up of multiple interconnected node, constantly swap data and control information is needed between node. accomplish that bar is not wadded a quilt with cotton ground swap data, each node must observe the rule that first appoint of something. and an agreement is exactly the rule of one group of control data communication. and these rules define form and the sequential of institute's swap data clearly. and these are network data exchange and rule, agreement and the standard formulated are called as procotol.
Procotol is primarily of following 3 key elements composition.1. semantic: semanteme is the meaning of the every part for resolving bit stream.It specify and need to send which kind of control information, and the action completed and the response made.2. grammer: grammer is structure and the form of user data and control information, and the meaning of the order of data appearance.3. sequential: time ordered pair event realization order detailed description.
Procotol is the set of rule of communication between all devices on network (webserver, computer and switch, router, fire compartment wall etc.), the form that when it specify communication, information must adopt and the meaning of these forms.Most of network all adopts the architecture of layering, and every one deck is all based upon on its lower floor, and the last layer to it provides certain service, and the details how realizing this service is shielded last layer.
Summary of the invention
The object of the invention is network application to divide according to service attribute, be each service creation specific VTN simultaneously, realize the network data transmission combined based on many VTN.The present invention carries out centralized control by unified for each VTN network to resource management platform, realizes the efficient management of network data resource, plans as a whole the business data transmission of whole network application.
The technical solution adopted for the present invention to solve the technical problems comprises the steps:
Step 1: according to the traffic performance of network application, creates several VTN networks, and sets price and the quality of service requirement of each VTN;
Step 2: according to price and the quality of service requirement of each VTN, for each VTN network selects optimum physics realization mechanism;
Step 3: according to the quality of service requirement of each VTN, selects a set of network protocols in existing network protocol set, by improving data transmission efficiency to the cutting of procotol;
Step 4: price and the service quality of being coordinated each VTN network by centralized control, supports the transfer of data of whole network application;
VTN described in step 1 is that its unique distinction is logical abstraction platform for providing an application of many tenants virtual network in SDN controller.Logic level is separated with physical layer by VTN completely, and user can design, utilize any required network, and without the need to the topological structure of understanding physical network and bandwidth restriction.Network application is divided according to service attribute, and is the specific VTN network of each service creation one, simultaneously according to price factor and the quality of service requirement of each VTN network of the property settings of affiliated business.
The physical data transfer realization mechanism meeting the standard of each VTN described in step 2 has a lot, such as Ethernet, radio etc., and the demand according to user therefrom selects optimum implementation.
Procotol described in step 3 is the set of rule of communication between all devices on network, the form that when it specify communication, information must adopt and the meaning of these forms.The corresponding specific Network of each VTN network in network application, so the VTN network application characteristic of single attribute is clear, and the resource-constrained of VTN network, thus without prejudice under the prerequisite of consensus standard, according to the actual requirements to the cutting that agreement is carried out to a certain degree, to only retain the basic agreement content of finishing the work.
Centralized control is carried out unified for each VTN network to resource management platform described in step 4, integration Internet resources, the data volume size carried by dynamic conditioning physical network, realizes the efficient management of Internet resources, the transfer of data of whole network application of making overall planning.
Accompanying drawing explanation
Fig. 1 is that many VTN combine schematic diagram.
Embodiment
Now to build Rich Media's consumer level network application and accompanying drawings implementation of the present invention.
The Network implementation method combined based on many VTN in a kind of SDN framework provided by the invention, comprises the steps:
Step 1: according to the traffic performance of network application, creates several VTN networks, and sets price and the quality of service requirement of each VTN.Rich Media is not a kind of concrete the Internet media form, and refers to the information dissemination method with animation, sound, video and/or interactivity.The consumer level network application incorporating Rich Media's technology comprises the business such as video, audio frequency, picture and network interaction information usually.By network application according to delineation of activities, and be every service creation VTN network, simultaneously according to the demand characteristics of affiliated business, as real-time, data volume size, realize the factors such as cost, and the budget of user sets price factor and the quality of service requirement of each VTN network.
Step 2: according to price and the quality of service requirement of each VTN, for each VTN network selects optimum physics realization mechanism.Instantly the mode realizing single business data transmission has a lot, and with transmission of audio data instance, it can adopt Ethernet to transmit, and also can adopt the mode transmission etc. of radio wave.So according to the price factor set by each VTN network and service quality standard, go to mate the existing physics realization mechanism meeting written standards one by one, and therefrom select most suitable.
Step 3: according to the quality of service requirement of each VTN, selects a set of network protocols in existing network protocol set, by improving data transmission efficiency to the cutting of procotol.Procotol is the set of rule of communication between all devices on network, the form that when it specify communication, information must adopt and the meaning of these forms.In the consumer level network application incorporating Rich Media's technology, each Network has clear and definite attribute and standard, so corresponding VTN network application characteristic is clear.The mode of Ethernet such as, is adopted to carry out transfer of data in step 2, so can adopt Transmission Control Protocol according to practical business characteristic, or the network data transfer protocol such as udp protocol, simultaneously due to the resource-constrained of VTN network, thus without prejudice under the prerequisite of consensus standard, according to the actual requirements to the cutting that agreement is carried out to a certain degree, can only retain the basic agreement content of finishing the work
Step 4: price and the service quality of being coordinated each VTN network by centralized control, supports the transfer of data of whole network application.Instantly globalize network resource administration becomes the key problem that network technology further develops.The new technical means taking cloud computing as representative, after incorporating computational resource, storage resources, starts to accelerate to integrate Internet resources based on the unified platform.As shown in Figure 1, centralized control is carried out unified for each VTN network to resource management platform in this example, integration Internet resources, the data volume size carried by dynamic conditioning physical network, realize the efficient management of Internet resources, making overall planning the transfer of data of whole network application, as by regulating the volume of transmitted data of different VTN to carry out re-set price, finally guaranteeing to meet network application with minimum price.
The facility using the inventive method to transmit integration networks application data is as follows:
The flexibility of application, extensibility is strong.Whole network application divides according to business, and is carried on multiple VTN network, is realized the transmission of network data by the combination of many VTN, and is met constantly by the demand of change by the increase and decrease of VTN network.
Network utilization is high.Whole network application has multiple VTN to combine, and centralized and unified to resource management platform, by the dynamic conditioning of parametric controller, more reasonably utilizes network link, improves the utilance of network.
Claims (5)
1. in SDN framework based on the Network implementation method that many VTN combine, it is characterized in that, comprise the steps:
1) according to the traffic performance of network application, create several VTN networks, and set price and the quality of service requirement of each VTN;
2) according to price and the quality of service requirement of each VTN, for each VTN network selects optimum physics realization mechanism;
3) according to the quality of service requirement of each VTN, in existing network protocol set, select a set of network protocols, cutting is carried out to procotol, thus improve data transmission efficiency;
4) coordinated price and the service quality of each VTN network by centralized control, support the transfer of data of whole network application.
2. the Network implementation method combined based on many VTN in a kind of SDN framework according to claim 1, it is characterized in that, described step 1 is specially: VTN is for providing an application of many tenants virtual network in SDN controller, logic level is separated with physical layer by VTN completely, user can design, utilize any required network, and without the need to the topological structure of understanding physical network and bandwidth restriction, network application is divided by service attribute, and be the specific VTN network of each service creation one, set price factor and the quality of service requirement of each VTN network according to the characteristic of affiliated business and the budget of user simultaneously.
3. the Network implementation method combined based on many VTN in a kind of SDN framework according to claim 1, it is characterized in that, in described step 2, physics realization mechanism comprises Ethernet, radio.
4. the Network implementation method combined based on many VTN in a kind of SDN framework according to claim 1, it is characterized in that, affiliated step 3 is specially: procotol is the set of rule of communication between all devices on network, the form that when it specify communication, information must adopt and the meaning of these forms, the corresponding specific Network of each VTN network in network application, so the VTN network application characteristic of single attribute is clear, according to the quality of service requirement of VTN, a selected set of network protocols, and the resource-constrained of VTN network, thus without prejudice under the prerequisite of consensus standard, cutting to be carried out according to the actual requirements to agreement, only retain the efficiency that the basic agreement content of finishing the work improves transfer of data.
5. the Network implementation method combined based on many VTN in a kind of SDN framework according to claim 1, it is characterized in that, described step 4 is specially: carry out centralized control by unified for each VTN network to resource management platform, integration Internet resources, the data volume size carried by dynamic conditioning physical network, realize the efficient management of Internet resources, the transfer of data of whole network application of making overall planning.
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| CN109565657A (en) * | 2016-08-31 | 2019-04-02 | 华为技术有限公司 | Control equipment, resource manager and its method |
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Effective date of registration: 20230609 Address after: Room 601, Building 1, Huace Center, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Breeze Enterprise Technology Co.,Ltd. Address before: 310018, No. 18 Jiao Tong Street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee before: ZHEJIANG GONGSHANG University |