CN105407010B - The flow generating device of software definition routing is realized based on SDN technology - Google Patents
The flow generating device of software definition routing is realized based on SDN technology Download PDFInfo
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- CN105407010B CN105407010B CN201511027738.8A CN201511027738A CN105407010B CN 105407010 B CN105407010 B CN 105407010B CN 201511027738 A CN201511027738 A CN 201511027738A CN 105407010 B CN105407010 B CN 105407010B
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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
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Abstract
A kind of flow method for generation and device that software definition routing is realized based on SDN technology is claimed in the present invention, belongs to field of communication technology.The network architecture includes management plane, control plane and data plane, in which: management plane is connected with control plane, and while defining flow for user demand, also the transmission for the flow of generation in external network defines routing policy；Control plane is responsible for connecting data plane and outside network device, pushes control command to data plane, and in external network configuration routing policy；Data plane is mainly responsible for generation network traffic data.To realize during analogue flow rate generates, network state information is monitored and analyzed in real time, so that user is according to self-demand, routing plan can also be configured in external network transmission for flow simultaneously by defining flow；Simultaneously automatic mode can also be opened according to network condition and independently selects transmission path appropriate in the case where flow routing is not configured in user.
Description
Technical field
The invention belongs to the communications fields, and in particular to a kind of to realize that the flow of software definition routing occurs based on SDN technology
Device.
Background technique
Internet innovation belongs to forward position and experimental very strong field, and relevant research achievement is only passing through practical proof
It can just be widely accepted and use afterwards.Therefore, researcher needs network test bed to go to verify new network architecture, association
View, service etc..As the key equipment of network test bed, network flow of the flow generator mainly for generation of emulation, simulation
Network really dispose after possible Network status, the validity of function and convenience are of great importance to experiment deployment.
Currently used for generate flow method there are mainly two types of: one, network flow playback --- utilize Technology of Network Sniffer pair
Network carries out sniff and the data that will acquire are recorded in journal file, then generates net according to the content recorded in journal file
Network flow；Two, model flow generates --- to network flow founding mathematical models after awareness network characteristic, and according to mathematical modulo
Type sends data packet, to generate the network flow for meeting network characteristic.But existing flow generating system, either it is based on
The network interface position for sending the data traffic of generation to flow occurrence of equipment is only planned and realized to the generation flow of which kind of method
It sets, and helpless is moved towards to the flow after network interface out.Therefore, once flow generating system be in routing can not or it is inconvenient pre-
The network environment known is tested by flow caused by it, and experimental designs may be limited, experiment effect
It may have a greatly reduced quality.
The bulky traffic and complicated data model generated simultaneously with the rapid development of Internet technology, Internet application
Requirement beyond general standard is proposed to traditional network architecture, this provides new problem also for Internet service.And it is
Seek to solve the scheme of these problems, has continued to bring out a variety of new network technologies in recent years.Software defined network SDN
(Software Defined Networking) is a kind of completely new network structure, it comes out the hardware abstraction of bottom, and mentions
For unified interface.By using these interfaces, two functions of control and forwarding of the network equipment will be separated.In this way,
The network equipment will be only responsible for simply operating data according to instruction, and control is given to the collection for connecting each network equipment
Chinese style controller.This can be avoided the intrinsic drawback of traditional network.
However, existing flow generating system has been difficult to meet the requirement of future network, it is based particularly on SDN technology not
Carry out the demand of network.It is therefore proposed that a kind of realize that the flow method for generation of software definition routing and device become based on SDN technology
It is particularly necessary.
Summary of the invention
For following existing deficiency, propose one kind and extend experiment latitude, enrich experiment intension based on SDN skill
Art realizes the flow generating device of software definition routing.Technical scheme is as follows: one kind realizing software based on SDN technology
Define the flow generating device of routing comprising management plane, control plane and data plane；Wherein, the management plane with
It controls plane to be connected, is provided for control plane and manage operation and application support, while defining flow generation, according to user
Different experiments requirement definition produced by flow external network transmission routing policy；The control plane is responsible for connecting data
The module of plane and the network equipment of external network define control command to data plane push flow, and obtain extranets
The network state information of network, including network topological information, communication flows and link state, and external network device configuration by
The routing policy that the routing module control of management plane defines；The data plane, which is mainly responsible for, occurs probe generation using flow
Network traffic data.
Further, the management plane includes traffic management module and routing module control, wherein traffic management mould
Block provides a flow configuration interface for user, user according to experiment demand, control content that the flow of data plane generates and
Intensity；Routing module control obtains the network state letter that SDN control module obtains during analogue flow rate generates in real time
Breath, provides a routing configuration interface for user, is transmission definition of the flow in external network according to the experiment demand of user
Routing policy；Automatic mode can also be opened, according to network condition, certainly in the case where flow routing is not configured in user simultaneously
Main selection transmission path.
Further, the control plane includes two modules: flow-control module and SDN control module: wherein flow
Control module is mainly responsible for and completes the flow of traffic management module and data plane the interaction of probe occurs, i.e., by parse come
The flow control commands of the traffic management module of Self management plane send out the flow that corresponding operation instruction passes to data plane
Raw probe；The SDN control module, the routing module control for being mainly responsible for completion management plane are exchanged with the SDN of external network
The interaction of machine cluster controls the SDN switch cluster of external network by control channel, by management plane routing module control
Routing decision is handed down to SDN switch cluster, and collects the status information of external network, returns to routing module control.
Further, probe occurs for the data plane, including flow, and flow occurs probe and passes the network flow of generation
Neighbouring SDN switch cluster is passed to be transmitted.
It advantages of the present invention and has the beneficial effect that:
The present invention is based on the flow generating devices that SDN technology realizes software definition routing, pass through the flow control of middle layer
Module and SDN control module functionally mutually merge, and the present invention are logically divided into flow, module and route test mould occurs
Block allows the present invention while defining flow, can also define flow in the path of external network transmission.The present invention is real
Show during analogue flow rate generates, has monitored network state information in real time, allow user according to different experiment need
It asks, is flow transmission configuration specified path or method for routing, to reach the experiment purpose that user wants.Experiment latitude is extended,
Enrich experiment intension；Equipment can also open automatic mode, according to net in the case where flow routing is not configured in user simultaneously
Network situation independently selects transmission path appropriate.
Detailed description of the invention
Fig. 1 is that the present invention provides the flow generating device that software definition routing is realized based on SDN technology of preferred embodiment
Architecture diagram；
Fig. 2 is the realization figure of the embodiment 1 of technical solution of the present invention；
Fig. 3 is the realization figure of the embodiment 2 of technical solution of the present invention.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described:
It is as shown in Figure 1 the flow method for generation and dress of the present invention that software definition routing is realized based on SDN technology
The schematic diagram set, as shown, the system architecture includes management plane, control plane and data plane.All control decisions are all
Control plane by carrying management plane business is handed down to data plane, completes all data manipulations by data plane.Management
Plane mainly passes through flow-control module sending flow rate configuration and related command of the configuration interface to control plane, flow control mould
After the configuration of parsing flow and related command, by the flow that corresponding instruction is issued to data plane probe occurs for block, and by flowing
Amount occurs probe and issues flow by configuration is specific；Meanwhile management plane is also according to the different experiments requirement definition present apparatus of user
Produced flow external network transmission routing policy, and by control plane SDN control modules to external network SDN
The corresponding routing policy of switch device sending flow rate.The technical issues of solving above scheme, building block technique side of the invention
Case and realization function are as described below:
Management plane is connected with the module of control plane, provides management operation for control plane and application is supported, fixed
While adopted flow occurs, according to flow produced by the different experiments requirement definition present apparatus of user on the road of external network transmission
By strategy.Control plane is responsible for the module for connecting data plane and the network equipment positioned at external network, pushes away to data plane
Control command is sent, network state information (including network topological information, communication flows and the link state of external network are obtained
Deng), and the routing policy that external network device configuration is defined by the routing module control of management plane.Data plane is mainly born
Duty generates network traffic data.
Management plane: it is made of traffic management module and routing module control.Wherein, traffic management module mentions for user
For a flow configuration interface, user can control content and intensity that the flow of data plane generates according to experiment demand；Road
By control module, during analogue flow rate generates, obtain the network state information that SDN control module obtains in real time, for
Family provides a routing configuration interface, is transmission of the flow in external network according to the personalized experiment demand of user, fixed
Adopted personalized routing policy；Automatic mode can also be opened, according to net in the case where flow routing is not configured in user simultaneously
Network situation independently selects transmission path appropriate.
Control plane: it is made of flow-control module and SDN control module.Flow-control module is mainly responsible for completion control
The interaction of probe occurs for the traffic management module of plane processed and the flow of data plane, i.e., by parsing from control plane flow
The flow of management system configures and related command, and probe is occurred for the flow that corresponding operation instruction passes to data plane；Institute
SDN control module is stated, the friendship of the SDN switch cluster of the routing module control and external network of completing control plane is mainly responsible for
Mutually, the SDN switch cluster that external network is controlled by control channel, will be under the routing decision of management plane routing module control
SDN switch cluster is issued, and collects the status information of external network, returns to routing module control.The control plane is led to
It crosses and functionally mutually merges flow-control module and SDN control module, allow the present invention while defining flow,
Flow can also be defined in the path of external network transmission.
Data plane: probe occurs for data plane equipment, i.e. flow, the hardware mainly generated by existing conventional flow amount
The network flow of generation is passed to neighbouring SDN switch cluster and transmitted by equipment.
SDN switch cluster: the routing decision mainly issued according to SDN control module, for from flow production system
Network traffic data provides transmission path.
Embodiment 1:
As shown in Fig. 2 in the flow method for generation and device to realize software definition routing the present invention is based on SDN technology
Routing is defined by user to test the network topological diagram of the traffic carrying capacity of No. 2 SDN switches.As shown, of the invention
Between device and No. 1 interchanger, the physical circuit between interchanger and interchanger and between interchanger and external network is real
Line marks, and the control route between apparatus of the present invention and SDN switch is marked with dotted line.In addition, in figure shown in black arrow
For the path of flow transmission.
Step 201: when network is initial, the topological structure of No. 1-5 five SDN switches is uploaded to by control channel to be based on
In the routing module control of the flow generating system of software definition routing.
Step 202: routing module control passes it to route test mould after learning the topology information of bottom-layer network
Block.
Step 203: by order target flow the number that probe generates occurs for user in the configuration interface of routing module control
No. 2 SDN switches are flowed through according to flow.Routing module control will provide this routing policy according to the demand of user for user,
And it will be in the FlowTable of subscriber policy write-once SDN switch.
Step 204: probe starting occurs for flow of the invention, generates network traffic data.
Step 205: the present invention sends the flow information of generation at No. 1 SDN switch.
Step 206: when new data packet reaches No. 1 SDN switch, interchanger will search matching with it for local for it
List item.If finding matched list item, corresponding forwarding behavior is made according to " behavior " in list item if interchanger, by data
Forward a packet to the port of No. 2 interchangers of connection；If can not find matched list item, directly abandon.
Step 207:2 interchanger, by matching flow table, is transmitted to other interchangers after receiving data packet.
Step 208: the generation intensity of verifier network flow occurring by constantly reinforcing flow, so that passing through No. 1 and No. 2 friendship
The network flow of connectivity port of changing planes constantly increases, and can test out the load-bearing capacity of No. 2 interchangers.
In flow method for generation and device of the embodiment 2: Fig. 3 to realize software definition routing the present invention is based on SDN technology,
For user after two different network servers that flow configuration interface is configured with that user wants access to, apparatus of the present invention generate stream
Measure the network topology schematic diagram of transmission path.As shown, there is 5 SDN switches in network, in which: the present invention is exchanged with No. 1
Between machine, the physical circuit between interchanger and interchanger and between interchanger and external network is marked with solid line, and this hair
The bright control route between SDN switch is marked with dotted line.In addition, black arrow show the path of flow transmission in figure.
Step 301: when network is initial, the topological structure of No. 1-5 five SDN switches is uploaded to by control channel to be based on
In the routing module control of the flow generating system of software definition routing.
Step 302: the routing module control positioned at management plane is transmitted after learning the topology information of bottom-layer network
To routing module control.
Step 303: routing module control is defaulted as flow transmission and produces 2 routing decisions according to network state information,
The path as shown in black arrow in figure.Wherein: after No. 1 and No. 4 SDN switches of data packet approach for accessing server A, passing to
Network others equipment；The data packet of server B is accessed after No. 1, No. 2 and No. 5 interchanger of approach, by the end of No. 5 interchangers
Network others equipment is passed in oral instructions.
Step 304: routing module control will be in the FlowTable of subscriber policy write-once SDN switch.
Step 305: probe starting occurs for flow of the invention, generates network traffic data.
Step 306: the present invention sends the flow information of generation at No. 1 SDN switch.
Step 307: when new data packet reaches No. 1 SDN switch, interchanger will search matching with it for local for it
List item.If finding matched list item, corresponding forwarding behavior is made according to " behavior " in list item if interchanger, by data
Packet is transmitted to corresponding interchanger；If can not find matched list item, directly abandon.
The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.?
After the content for having read record of the invention, technical staff can be made various changes or modifications the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (3)
1. it is a kind of based on SDN technology realize software definition routing flow generating device, it is characterised in that: including management plane,
Control plane and data plane；Wherein, the management plane with control plane be connected, for control plane provide management operation and
Using support, while defining flow, according to flow produced by the different experiments requirement definition of user in external network transmission
Routing policy；The control plane is responsible for connecting the module of data plane and the network equipment of external network, flat to data
Face push flow defines control command, and obtains the network state information of external network, including network topological information, communication flows
And link state, and the routing policy that external network device configuration is defined by the routing module control of management plane；It is described
Data plane is responsible for that probe generation network traffic data occurs using flow；
The management plane includes traffic management module and routing module control, wherein traffic management module provides one for user
A flow configuration interface, user control content and intensity that the flow of data plane generates according to experiment demand；Route test mould
Block obtains the network state information that SDN control module obtains in real time, provides one for user during analogue flow rate generates
A routing configuration interface defines routing policy according to the experiment demand of user for transmission of the flow in external network；Simultaneously
Automatic mode can be opened according to network condition and independently selects transmission path in the case where flow routing is not configured in user.
2. the flow generating device according to claim 1 for being realized software definition routing based on SDN technology, feature are existed
In: the control plane includes two modules: flow-control module and SDN control module: wherein flow-control module, is responsible for
The interaction for completing the flow generation probe of traffic management module and data plane, passes through and parses the traffic management from management plane
Probe is occurred for the flow that corresponding operation instruction passes to data plane by the flow control commands of module；The SDN controls mould
Block is responsible for completing the interaction of the SDN switch cluster of the routing module control of management plane and external network, passes through control channel
The SDN switch cluster for controlling external network, is handed down to SDN switch collection for the routing decision of management plane routing module control
Group, and the status information of external network is collected, return to routing module control.
3. the flow generating device according to claim 2 for being realized software definition routing based on SDN technology, feature are existed
In: probe occurs for the data plane, including flow, and flow occurs probe and the network flow of generation is passed to neighbouring SDN
Switch cluster is transmitted.
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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 |
| 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 |
| CN107395502B (en) * | 2016-05-17 | 2021-02-09 | 华为技术有限公司 | Method and device for determining routing strategy |
| CN107404442A (en) * | 2016-05-19 | 2017-11-28 | 中兴通讯股份有限公司 | Flow processing method and system |
| 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 |
| 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 |
| 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 |
| CN113259788B (en) * | 2021-04-14 | 2022-06-07 | 北京邮电大学 | SDN-based high-precision time-frequency synchronous network |
| CN113572726B (en) * | 2021-06-07 | 2023-04-28 | 中国人民解放军战略支援部队信息工程大学 | Multimode network control-data plane consistency verification method and device |
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| CN104104718A (en) * | 2014-07-02 | 2014-10-15 | 北京邮电大学 | User autonomous routing customization system based on software-defined network |
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