CN105407010A - Flow generation device capable of realizing software defined routing based on SDN (software defined networking) technologies - Google Patents
Flow generation device capable of realizing software defined routing based on SDN (software defined networking) technologies Download PDFInfo
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- CN105407010A CN105407010A CN201511027738.8A CN201511027738A CN105407010A CN 105407010 A CN105407010 A CN 105407010A CN 201511027738 A CN201511027738 A CN 201511027738A CN 105407010 A CN105407010 A CN 105407010A
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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
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
Abstract
The invention relates to a flow generation device capable of realizing software defined routing based on SDN (software defined networking) technologies and belongs to the communication technological field. The network architecture of the flow generation device includes a management plane, a control plane and a data plane, wherein the management plane is connected with the control plane and defines flow according to user demands, and defines routing strategies for transmission of generated flow at an external network, the control plane is responsible for connecting the data plane and external network equipment, and pushing control commands to the data plane and configuring routing strategies at the external network, and the data plane is mainly responsible for generating network data flow. With the flow generation device adopted, network state information is monitored and analyzed in real time in a simulation flow generation process, and users can define flow and configure routing schemes for the transmission of the flow in the external network according to the their own needs; and at the same time, an automatic mode is enabled when the users do not configure flow routing, and proper transmission paths can be selected independently according to network conditions.
Description
Technical field
The invention belongs to the communications field, be specifically related to a kind of flow generating device realizing software definition route based on SDN technology.
Background technology
The Internet innovation belongs to forward position and experimental very strong field, and relevant achievement in research only just can be widely accepted and use after practical proof.Therefore, researcher needs network test bed to go to verify new network architecture, agreement, service etc.As the key equipment of network test bed, flow generator mainly for generation of emulation network traffics, analog network truly dispose after possible network condition, validity and the convenience of its function are deployed with important meaning to experiment.
Method at present for generation of flow mainly contains two kinds: one, network flow playback---and utilize Technology of Network Sniffer to smell network and visit and the data of acquisition are recorded in journal file, then produce network traffics according to the content recorded in journal file; Two, model flow produces---and to network traffics founding mathematical models after awareness network characteristic, and send packet according to Mathematical Modeling, thus produce the network traffics meeting network characteristic.But no matter existing flow generation systems, be the generation flow based on which kind of method, only plan and achieve the network interface position data traffic of generation being sent to flow generation equipment, and moving towards helpless to the flow after going out network interface.Therefore, once flow generation systems be in route can not or inconvenience precognition network environment, the flow produced by it is tested, and experimental designs may limit to some extent, and experiment effect also may be had a greatly reduced quality.
Simultaneously along with the develop rapidly of Internet technology, the bulky traffic that internet, applications produces and complicated data model propose the requirement exceeding general standard to traditional network architecture, this is also for Internet service provides a new difficult problem.And in order to seek the scheme solving these difficult problems, continued to bring out multiple new network technology in recent years.Software defined network SDN (SoftwareDefinedNetworking) is a kind of brand-new network configuration, and it by the hardware abstraction of bottom out, and provides unified interface.By using these interfaces, control and forwarding two functions of the network equipment come separated.Like this, the network equipment will be only responsible for simply operating data according to instruction, and control be given the centerized fusion device connecting each network equipment.This can be avoided the intrinsic drawback of legacy network.
But existing flow generation systems has been difficult to the requirement meeting future network, particularly based on the demand of the future network of SDN technology.Therefore, propose a kind ofly to realize the flow method for generation of software definition route based on SDN technology and device becomes particularly necessary.
Summary of the invention
For following existing deficiency, propose one and extend experiment latitude, enrich the flow generating device realizing software definition route based on SDN technology of experiment intension.Technical scheme of the present invention is as follows: a kind of flow generating device realizing software definition route based on SDN technology, and it comprises management plane, control plane and datum plane; Wherein, described management plane is connected with control plane, for control plane provides bookkeeping and application to support, while definition flow occurs, according to the different experiments requirement definition of user produce the routing policy of flow at outside Internet Transmission; Described control plane is responsible for the module of connection data plane and the network equipment of external network, flow definition control command is pushed to datum plane, and obtain the network state information of external network, comprise network topological information, communication flows and Link State, and the externally routing policy that defined by the routing module control of management plane of network equipments configuration; Described datum plane primary responsibility adopts flow generation probe to produce network traffic data.
Further, described management plane comprises traffic management module and routing module control, wherein, traffic management module, for user provides a flow configuration interface, user is demand experimentally, the content of the flow generation of control data plane and intensity; Routing module control, in the process that analogue flow rate produces, the network state information that Real-time Obtaining SDN control module obtains, for user provides a routing configuration interface, according to the experiment demand of user, is the transmission definition routing policy of flow in external network; Also when user does not configure flow route, automatic mode can be opened, according to network condition, from main separation transmission path simultaneously.
Further, described control plane, comprise two modules: flow-control module and SDN control module: wherein flow-control module, primary responsibility completes the mutual of the flow generation probe of traffic management module and datum plane, namely by resolving the flow control commands from the traffic management module of management plane, corresponding operational order is passed to the flow generation probe of datum plane; Described SDN control module, primary responsibility completes the mutual of the routing module control of management plane and the SDN switch cluster of external network, the SDN switch cluster of external network is controlled by control channel, the routing decision of management plane routing module control is handed down to SDN switch cluster, and collect the state information of external network, return to routing module control.
Further, described datum plane, comprises flow generation probe, and the network traffics of generation are passed to contiguous SDN switch cluster and transmit by flow generation probe.
Advantage of the present invention and beneficial effect as follows:
The present invention is based on the flow generating device that SDN technology realizes software definition route, functionally mutually merged by the flow-control module in intermediate layer and SDN control module, the present invention is divided into flow generation module and routing module control in logic, make the present invention while definition flow, can also define the path of flow at outside Internet Transmission.Present invention achieves in the process produced at analogue flow rate, real-time monitoring state of network information, make user according to different experiment demands, to be traffic transport configuration specified path or method for routing, to reach the experiment purpose that user wants.Extend experiment latitude, enrich experiment intension; Equipment also when user does not configure flow route, can open automatic mode, according to network condition, from the transmission path that main separation is suitable simultaneously.
Accompanying drawing explanation
Fig. 1 is the Organization Chart realizing the flow generating device of software definition route based on SDN technology that the invention provides preferred embodiment;
Fig. 2 is the realization figure of the embodiment 1 of technical scheme of the present invention;
Fig. 3 is the realization figure of the embodiment 2 of technical scheme of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Be illustrated in figure 1 and of the present inventionly realize the flow method for generation of software definition route and the schematic diagram of device based on SDN technology, as shown in the figure, this system architecture comprises management plane, control plane and datum plane.All control decisions are all handed down to datum plane by the control plane carrying management plane business, complete all data manipulations by datum plane.Management plane configures and related command mainly through the flow-control module sending flow rate of configuration interface to control plane, flow-control module is after the configuration of parsing flow and related command, corresponding instruction is issued to the flow generation probe of datum plane, and specifically sends flow by flow generation probe by configuration; Meanwhile, management plane also according to this device of different experiments requirement definition of user produce the routing policy of flow at outside Internet Transmission, and by routing policy corresponding to the SDN switch equipment sending flow rate of the SDN control modules to external network of control plane.Solve the technical problem of above scheme, building block technique scheme of the present invention and practical function as described below:
Management plane is connected with the module of control plane, for control plane provides bookkeeping and application to support, while definition flow occurs, according to this device of different experiments requirement definition of user produce the routing policy of flow at outside Internet Transmission.Control plane is responsible for the module of connection data plane and is positioned at the network equipment of external network, control command is pushed to datum plane, obtain the network state information (comprising network topological information, communication flows and Link State etc.) of external network, and the externally routing policy that defined by the routing module control of management plane of network equipments configuration.Datum plane primary responsibility produces network traffic data.
Management plane: be made up of traffic management module and routing module control.Wherein, traffic management module, for user provides a flow configuration interface, user can experimentally demand, the content that the flow of control data plane produces and intensity; Routing module control, in the process that analogue flow rate produces, the network state information that Real-time Obtaining SDN control module obtains, for user provides a routing configuration interface, according to the experiment demand of the personalization of user, be the transmission of flow in external network, the routing policy that definition is personalized; Also when user does not configure flow route, automatic mode can be opened, according to network condition, from the transmission path that main separation is suitable simultaneously.
Control plane: be made up of flow-control module and SDN control module.Flow-control module, primary responsibility completes the mutual of the traffic management module of control plane and the flow generation probe of datum plane, namely configured and related command by the flow of resolving from control plane flow management system, corresponding operational order is passed to the flow generation probe of datum plane; Described SDN control module, primary responsibility completes the mutual of the routing module control of control plane and the SDN switch cluster of external network, the SDN switch cluster of external network is controlled by control channel, the routing decision of management plane routing module control is handed down to SDN switch cluster, and collect the state information of external network, return to routing module control.Described control plane, by flow-control module and SDN control module functionally mutually being merged, makes the present invention while definition flow, can also define the path of flow at outside Internet Transmission.
The network traffics of generation, mainly by the hardware device that existing conventional flow amount produces, are passed to contiguous SDN switch cluster and transmit by datum plane: datum plane equipment, i.e. flow generation probe.
SDN switch cluster: the routing decision mainly issued according to SDN control module, for providing transmission path from the network traffic data of flow production system.
Embodiment 1:
The network topological diagram of the traffic carrying capacity defining route to test No. 2 SDN switch in the flow method for generation of software definition route and device by user is realized as shown in Figure 2 for the present invention is based on SDN technology.As shown in the figure, between apparatus of the present invention and No. 1 switch, between switch and switch, and the physical circuit solid line between switch and external network marks, and the control circuit dotted line between apparatus of the present invention and SDN switch marks.In addition, in figure, black arrow is depicted as the path of traffic transport.
Step 201: when network is initial, the topological structure of No. 1-5 five SDN switch is uploaded in the routing module control based on the flow generation systems of software definition route by control channel.
Step 202: routing module control, after learning the topology information of bottom-layer network, is passed to routing module control.
Step 203: user is at the configuration interface of routing module control, and the data traffic produced by order target flow generation probe flows through No. 2 SDN switch.Routing module control by the demand according to user, for user provides this routing policy, and by the FlowTable of subscriber policy write-once SDN switch.
Step 204: flow generation probe of the present invention starts, produces network traffic data.
Step 205: the flow information of generation is sent to No. 1 SDN switch place by the present invention.
Step 206: when new packet arrives No. 1 SDN switch, switch will search the local list item matched with it for it.If find the list item of coupling, switch then makes corresponding forwarding behavior according to " behavior " in list item, packet is forwarded to the port of connection No. 2 switches; If can not find the list item of coupling, then directly abandon.
Step 207:2 switch, after receiving packet, by coupling stream table, is transmitted to other switches.
Step 208: by constantly strengthening the generation intensity of flow generation verifier network flow, is made constantly to be increased by the network traffics of No. 1 and No. 2 switch connection port, can test out the load-bearing capacity of No. 2 switches.
Embodiment 2: Fig. 3 is the present invention is based in flow method for generation and device that SDN technology realizes software definition route, user is after flow configuration interface is configured with two different webservers that user wants to access, and apparatus of the present invention produce the network topology schematic diagram in traffic transport path.As shown in the figure, 5 SDN switch are had, wherein: between the present invention and No. 1 switch, between switch and switch in network, and the physical circuit solid line between switch and external network marks, and the control circuit dotted line between the present invention and SDN switch marks.In addition, in figure, black arrow is depicted as the path of traffic transport.。
Step 301: when network is initial, the topological structure of No. 1-5 five SDN switch is uploaded in the routing module control based on the flow generation systems of software definition route by control channel.
Step 302: the routing module control being positioned at management plane, after learning the topology information of bottom-layer network, is passed to routing module control.
Step 303: routing module control, according to network state information, is defaulted as traffic transport and creates 2 routing decisions, path as shown in black arrow in figure.Wherein: after No. 1, the packet approach of access services device A and No. 4 SDN switch, other equipment of network is passed to; The packet of access services device B, after No. 1, approach, No. 2 and No. 5 switches, passes to other equipment of network by the port of No. 5 switches.
Step 304: routing module control is by the FlowTable of subscriber policy write-once SDN switch.
Step 305: flow generation probe of the present invention starts, produces network traffic data.
Step 306: the flow information of generation is sent to No. 1 SDN switch place by the present invention.
Step 307: when new packet arrives No. 1 SDN switch, switch will search the local list item matched with it for it.If find the list item of coupling, switch then makes corresponding forwarding behavior according to " behavior " in list item, and packet is transmitted to corresponding switch; If can not find the list item of coupling, then directly abandon.
These embodiments are interpreted as only being not used in for illustration of the present invention limiting the scope of the invention above.After the content of reading record of the present invention, technical staff can make various changes or modifications the present invention, and these equivalence changes and modification fall into the scope of the claims in the present invention equally.
Claims (4)
1. realize a flow generating device for software definition route based on SDN technology, it is characterized in that: comprise management plane, control plane and datum plane; Wherein, described management plane is connected with control plane, for control plane provides bookkeeping and application to support, while definition flow, according to the different experiments requirement definition of user produce the routing policy of flow at outside Internet Transmission; Described control plane is responsible for the module of connection data plane and the network equipment of external network, flow definition control command is pushed to datum plane, and obtain the network state information of external network, comprise network topological information, communication flows and Link State, and the externally routing policy that defined by the routing module control of management plane of network equipments configuration; Described datum plane primary responsibility adopts flow generation probe to produce network traffic data.
2. the flow generating device realizing software definition route based on SDN technology according to claim 1, it is characterized in that: described management plane comprises traffic management module and routing module control, wherein, traffic management module, for user provides a flow configuration interface, user is demand experimentally, the content of the flow generation of control data plane and intensity; Routing module control, in the process that analogue flow rate produces, the network state information that Real-time Obtaining SDN control module obtains, for user provides a routing configuration interface, according to the experiment demand of user, is the transmission definition routing policy of flow in external network; Also when user does not configure flow route, automatic mode can be opened, according to network condition, from main separation transmission path simultaneously.
3. the flow generating device realizing software definition route based on SDN technology according to claim 1 and 2, it is characterized in that: described control plane, comprise two modules: flow-control module and SDN control module: wherein flow-control module, primary responsibility completes the mutual of the flow generation probe of traffic management module and datum plane, namely by resolving the flow control commands from the traffic management module of management plane, corresponding operational order is passed to the flow generation probe of datum plane; Described SDN control module, primary responsibility completes the mutual of the routing module control of management plane and the SDN switch cluster of external network, the SDN switch cluster of external network is controlled by control channel, the routing decision of management plane routing module control is handed down to SDN switch cluster, and collect the state information of external network, return to routing module control.
4. the flow generating device realizing software definition route based on SDN technology according to claim 3, it is characterized in that: described datum plane, comprise flow generation probe, the network traffics of generation are passed to contiguous SDN switch cluster and transmit by flow generation probe.
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| CN105915407A (en) * | 2016-04-13 | 2016-08-31 | 重庆邮电大学 | Flow generator virtualization realization system and flow generator virtualization realization method based on SDN |
| CN106027293A (en) * | 2016-05-16 | 2016-10-12 | 重庆邮电大学 | Method for survivability deployment of SDN (Software Defined Networking) controller based on appointed time delay |
| CN106899458A (en) * | 2017-03-28 | 2017-06-27 | 重庆邮电大学 | A kind of flow recording and broadcasting system based on SDN |
| WO2017197983A1 (en) * | 2016-05-19 | 2017-11-23 | 中兴通讯股份有限公司 | Traffic processing method and system, storage medium, switch |
| WO2017198007A1 (en) * | 2016-05-17 | 2017-11-23 | 华为技术有限公司 | Method and apparatus for determining routing policy |
| CN110113262A (en) * | 2019-05-10 | 2019-08-09 | 广东工业大学 | A kind of routing policy determines method, apparatus, SDN controller and heterogeneous network |
| CN111107011A (en) * | 2019-11-05 | 2020-05-05 | 厦门网宿有限公司 | Method for detecting and generating optimal path and network acceleration system |
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| CN113259788A (en) * | 2021-04-14 | 2021-08-13 | 北京邮电大学 | SDN-based high-precision time-frequency synchronous network |
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| CN105915407B (en) * | 2016-04-13 | 2019-07-19 | 重庆邮电大学 | A kind of flow generator virtualization realization system and method based on SDN |
| CN105915407A (en) * | 2016-04-13 | 2016-08-31 | 重庆邮电大学 | Flow generator virtualization realization system and flow generator virtualization realization method based on SDN |
| CN106027293B (en) * | 2016-05-16 | 2019-01-22 | 重庆邮电大学 | A kind of SDN controller survivability dispositions method based on specified time delay |
| CN106027293A (en) * | 2016-05-16 | 2016-10-12 | 重庆邮电大学 | Method for survivability deployment of SDN (Software Defined Networking) controller based on appointed time delay |
| WO2017198007A1 (en) * | 2016-05-17 | 2017-11-23 | 华为技术有限公司 | Method and apparatus for determining routing policy |
| WO2017197983A1 (en) * | 2016-05-19 | 2017-11-23 | 中兴通讯股份有限公司 | Traffic processing method and system, storage medium, switch |
| CN106899458A (en) * | 2017-03-28 | 2017-06-27 | 重庆邮电大学 | A kind of flow recording and broadcasting system based on SDN |
| CN106899458B (en) * | 2017-03-28 | 2019-12-31 | 重庆邮电大学 | SDN-based flow recording and broadcasting system |
| CN110113262A (en) * | 2019-05-10 | 2019-08-09 | 广东工业大学 | A kind of routing policy determines method, apparatus, SDN controller and heterogeneous network |
| CN111107011A (en) * | 2019-11-05 | 2020-05-05 | 厦门网宿有限公司 | Method for detecting and generating optimal path and network acceleration system |
| CN111107011B (en) * | 2019-11-05 | 2022-10-28 | 厦门网宿有限公司 | Method for detecting and generating optimal path and network acceleration system |
| CN111654446A (en) * | 2020-05-26 | 2020-09-11 | 李云祥 | Big data flow control method and device and flow server |
| CN111654446B (en) * | 2020-05-26 | 2022-11-29 | 北京城建智控科技股份有限公司 | Big data flow control method and device and flow server |
| CN113259788A (en) * | 2021-04-14 | 2021-08-13 | 北京邮电大学 | SDN-based high-precision time-frequency synchronous network |
| CN113572726A (en) * | 2021-06-07 | 2021-10-29 | 中国人民解放军战略支援部队信息工程大学 | Multi-mode network control-data plane consistency verification method and device |
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