CN106130769A - A kind of Network Quality Analysis method based on SDN and SDN system - Google Patents
A kind of Network Quality Analysis method based on SDN and SDN system Download PDFInfo
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- CN106130769A CN106130769A CN201610498816.0A CN201610498816A CN106130769A CN 106130769 A CN106130769 A CN 106130769A CN 201610498816 A CN201610498816 A CN 201610498816A CN 106130769 A CN106130769 A CN 106130769A
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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
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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
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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
The invention discloses a kind of based on SDN ground network mass analysis method and SDN system, analysis method includes: SDN controller receives the user's message that SDN switch sends, and obtains the protocol type in user's message；SDN controller is tested according to protocol type, notice SDN switch；Network quality information in SDN switch measured message repeating process, and report described SDN controller, complete test.Obtained the information of the network service quality analysis of message by the present invention, thus network service is preferably provided.
Description
Technical field
The present invention relates to SDN technical field, particularly relate to a kind of Network Quality Analysis method based on SDN and
SDN system.
Background technology
In data communication network, network service quality analysis is extremely important and conventional, and Analysis on Quality of Service includes
Bandwidth, packet loss, message transmissions delay etc..Conventional test methodologies constructs test packet by test instrumentation, is tested by analysis
Message, obtains the network performance and network quality parameters, such as transmission delay, transfer rate etc. provided the user, but can not
According to the type of service of user, carry out network service quality analysis automatically, nor data forwarding paths can be optimized, such as figure
Shown in 1.
SDN (Software Defined Network, software defined network) is a kind of emerging network based on software
Framework and technology, its core technology is OpenFlow technology.Core technology OpenFlow of SDN is by by network equipment key-course
Separate with data Layer.SDN controller can obtain bottom-layer network information flexibly by OpenFlow agreement, thus SDN is controlled
Device processed can obtain global network information.But in the prior art of SDN, also there is no scheme can realize how obtaining overall situation net
The network service quality analysis information of message in network.
Therefore, in SDN, how more easily to obtain the information of the network service quality analysis of message, be this technology
Skilled person's question of common concern.
Summary of the invention
In consideration of it, it is an object of the invention to provide a kind of Network Quality Analysis method based on SDN and SDN system, use
To obtain the information of the network service quality analysis of message, preferably provide network service.
According to foregoing invention purpose, the present invention proposes a kind of Network Quality Analysis method based on SDN, described SDN
Including customer side and network side, network side includes some SDN switch and at least one SDN controller, the lateral net of described client
Network side sends message, and described SDN switch sends message to described SDN controller, and described analysis method includes:
Step S1, described SDN controller receives the user's message that described SDN switch sends, obtains described user's message
In protocol type；
Step S2, described SDN controller, according to described protocol type, notifies that described SDN switch is tested；
Step S3, the network quality information in described SDN switch measured message repeating process, and report described SDN
Controller, completes test.
Preferably, step S2 specifically includes:
Described SDN controller configures described use according to source IP address, the purpose IP address of described user's message in stream table
The forward-path of family message, in the expansion field of described stream table, the action of the described network quality information of configuration acquisition refers to simultaneously
Order；
Described SDN controller issues the described stream table all SDN switch to described forward-path；
Described SDN controller generates the first privately owned amplifying message according to described protocol type and sends to described forward-path
Entrance SDN switch, configure, in described first privately owned amplifying message, the Network Quality Analysis class that described protocol type is corresponding
Type；
Described SDN controller generates the test packet that described Network Quality Analysis type is corresponding, sends described test packet
Entrance SDN switch to described forward-path.
Preferably, step S3 specifically includes:
After described entrance SDN switch completes the test of Ingress Network quality analysis, in described test packet, configuration is described
Network Quality Analysis type, the Network Quality Analysis information of entrance, and the outlet SDN exchange sent to described forward-path
Machine；
Described outlet SDN switch generates the second privately owned amplifying message and sends to SDN controller, at the second privately owned extension report
Literary composition configures the Network Quality Analysis letter of described Network Quality Analysis type, the Network Quality Analysis information of described entrance and outlet
Breath；
Described SDN controller obtains Network Quality Analysis information and the outlet of the entrance in described second privately owned amplifying message
Network Quality Analysis information.
Preferably, described first privately owned amplifying message includes the header field of this first privately owned amplifying message and described network
Quality analysis type.
Preferably, described Network Quality Analysis type includes that TCP message connects time delay, FTP message connects time delay, file passes
Defeated rate type, one or several combinations of message packet loss type.
Preferably, described second privately owned amplifying message includes the header field of this second privately owned amplifying message, described network quality
The Network Quality Analysis information of analysis type and described entrance and the Network Quality Analysis information of outlet.
Preferably, described Network Quality Analysis information include message packet loss, message transmissions postpone, file transfer rate
One or several.
According to foregoing invention purpose, the present invention also provides for a kind of SDN system, described SDN include customer side and
Network side, described network side includes some SDN switch and at least one SDN controller, including:
Described SDN controller, is used for notifying that described SDN switch carries out network according to the protocol type of described user's message
Quality test, and obtain the network quality information of the message that described SDN switch reports, including:
Control module, can open and close the Network Quality Analysis function of SDN for described SDN controller；
Stream table module, joins according to source IP address, the purpose IP address of user's message for described SDN controller in stream table
Putting the forward-path of described user's message, in the expansion field of described stream table, configuration obtains the action of network quality information simultaneously
Instruction, and issue the described stream table all SDN switch to described forward-path；
User type processing module, for described SDN controller according to the protocol type of described user's message, notifies described
SDN switch is tested；
Statistical module, for obtaining the network quality information that described SDN switch reports；
Described SDN switch, for the network quality information in measured message repeating process, and reports described SDN control
Device processed, including:
Measurement module, the network quality information in described SDN switch measured message repeating process；
Information feedback module, reports described network quality information to described SDN controller for described SDN switch.
Preferably, described user type processing module specifically includes:
User type recognition unit, the protocol type in user's message described in described SDN controller identification；
First privately owned amplifying message unit, generates the first privately owned expansion for described SDN controller according to described protocol type
Exhibition message sends the entrance SDN switch to described forward-path, configures described association in described first privately owned amplifying message
The Network Quality Analysis type that view type is corresponding；
Test packet unit, generates the described corresponding test packet of Network Quality Analysis type for described SDN controller,
And send the entrance SDN switch to described forward-path.
Preferably, described information feedback module specifically includes:
Second privately owned amplifying message signal generating unit, for described SDN switch according to described Network Quality Analysis type, net
Network mass analysis information generates described second privately owned amplifying message；
Transmitting element, sends to SDN controller described in described second privately owned amplifying message for described SDN switch.
Compared with prior art, a kind of Network Quality Analysis method based on SDN of the present invention and SDN system, have
Following beneficial effect: SDN controller can generate corresponding test packet according to the protocol type of user, by test packet and
The advantage of SDN can conveniently obtain Network Quality Analysis information, must make such that it is able to break away from legacy network
The limitation tested is carried out by instrument；The Network Quality Analysis information simultaneously obtained by inventive network mass analysis method,
Network environment is optimized offer reference can to SDN controller, such as can be by obtaining message on the transmit path
Transmission delay, can optimize the transmission path of message.
Accompanying drawing explanation
Fig. 1 is traditional Network Quality Analysis schematic diagram；
Fig. 2 is the flow chart of a kind of based on SDN Network Quality Analysis method of one embodiment of the invention；
Fig. 3 is the SDN system structure schematic diagram of one embodiment of the invention；
Fig. 4 is the SDN controller architecture schematic diagram of one embodiment of the invention；
Fig. 5 is the SDN switch structural representation of one embodiment of the invention；
Fig. 6 is the structural representation of the SDN controller of further embodiment of the present invention；
Fig. 7 is the structural representation of the SDN switch of further embodiment of the present invention.
Detailed description of the invention
Mention as in background technology in SDN, how to obtain the information of the network service quality analysis of message,
It is those skilled in the art of the present technique's questions of common concern.
Therefore the present invention receives, by SDN controller, the user's message that SDN switch sends, and obtains the association in user's message
View type, SDN controller, according to protocol type, notifies that SDN switch is tested, and then SDN switch measured message forwards
During network quality information, and report SDN controller, SDN controller is according to the Network Quality Analysis information obtained, more
Good offer network service quality, such as, can optimize the forward-path of message according to the transmission delay of message, it is also possible to analyze
The packet loss etc. of message.
Below by way of specific instantiation accompanying drawings embodiments of the present invention, those skilled in the art can
Further advantage and effect of the present invention is understood easily by content disclosed in the present specification.The present invention also can be different by other
Instantiation implemented or applied, the every details in this specification also can based on different viewpoints and application, without departing substantially from
Various modification and change is carried out under the spirit of the present invention.
Fig. 2 is the flow chart of a kind of Network Quality Analysis method based on SDN of the present invention.As in figure 2 it is shown, SDN bag
Including customer side and network side, network side includes some SDN switch and at least one SDN controller, and the lateral network side of client is sent out
Delivering newspaper literary composition, SDN switch sends message to SDN controller, and this analysis method specifically includes following steps:
Step S1:SDN controller receives the user's message that SDN switch sends, and obtains the protocol type in user's message；
Step S2:SDN controller is tested according to protocol type, notice SDN switch；
Network quality information in step S3:SDN switch measured message repeating process, and report SDN controller, complete
Become test.
In step sl, when user or tester need to obtain message mass analysis information in network, such as, need
Obtain the transmission delay of the forward-path of certain type message, can be by opening Network Quality Analysis merit at SDN controller
Can realize.Network Quality Analysis function opened by SDN controller, it is meant that SDN controller and SDN switch proceed by message
Network quality is tested, thus SDN switch receives the user's message from customer side, and sends user's message to SDN controller.
Some information characterizing message characteristic are included, such as: source IP address, purpose IP address, protocol type etc. in user's message.Just
For protocol type, also include several types, such as TCP message, FTP message, UDP message etc..In the present invention, use is utilized
This characteristic information of protocol type in the message of family, according to the protocol type in user's message, SDN controller notifies that SDN exchanges
Machine carries out the network quality test that protocol type is corresponding, say, that the user's message that protocol type is identical carries out identical network
Quality test, such as, the protocol type of user's message is TCP message, and SDN controller can be that this protocol type configuration TCP connects
Connect the network quality test of time delay, by implementing the present invention, it is possible to obtain the user's message transmission at the forward-path of network
Time delay, such that it is able to preferably optimize the forward-path of user's message.Different network matter is carried out by different protocol types
Measure examination, obtain the Network Quality Analysis information of user's message, preferably optimize network environment.
Preferably, step S2 specifically includes:
SDN controller configures turning of this user's message according to source IP address, the purpose IP address of user's message in stream table
Sending out path, in the expansion field of stream table, configuration obtains the action command of network quality information simultaneously；
SDN controller issues this stream table all SDN switch to forward-path；
SDN controller generates, according to protocol type, the entrance SDN friendship that the first privately owned amplifying message sends to forward-path
Change planes, the first privately owned amplifying message configures the Network Quality Analysis type that this protocol type is corresponding；
SDN controller generates the test packet that Network Quality Analysis type is corresponding, sends test packet to forward-path
Entrance SDN switch.
In specific implementation process, for traditional SDN, itself carries out stream table configuration in the controller to message
Time, the write of the such as routing information such as purpose IP, destination interface can be flowed in table, and in the present invention, except configuring these bases
Outside information, extra, also need to be written in stream table the relevant information carrying out network quality test, such as at the action word of stream table
The instructions such as write in section (action) " insertion current time stamp presses out port and E-Packets ", so receive stream table when switch
Time, the action of test according to the command adapted thereto in action field, can be completed.Referring to table 1, table 1 gives a kind of embodiment party
Formula downstream table needs the network quality test field of configuration.Certainly due to a lot of actions dependence stream table of switch in SDN
Completing, it is a kind of than more preferably scheme for therefore using stream table to carry out testing instruction, but be also not excluded for using other means to
Go out instruction, such as issue a special execution and instruct to switch etc..
Table 1 be one embodiment of the invention stream table in the configuration of part extended field and implication.
In addition to above-mentioned action, SDN controller also needs to be tested by corresponding user's message before switch performs test
Type notification, to switch, allows switch carry out the preparation of test.Perform this action, it is possible to use under existing standard agreement
Privately owned amplifying message.
SDN controller configures corresponding network quality according to the protocol type of user's message in the first privately owned amplifying message
Analysis type.Such as, the protocol type of user's message is TCP message, and can configure Network Quality Analysis type can be TCP report
Literary composition connects time delay；The protocol type of user's message is FTP message, and can configure Network Quality Analysis type can be FTP message
Connect time delay, in addition to this it is possible to configuration Network Quality Analysis type is file transfer rate type, message packet loss type
Deng.According to different Network Quality Analysis types, SDN switch carries out different network quality tests.First privately owned extension report
As shown in table 2, table 2 provides the specific embodiment of a first privately owned amplifying message to literary composition, and the header field of privately owned amplifying message includes
Version, Type, Length, Transaction Id, Experimenter, Experimenter type field information, its
Middle Experimenter Type represents the sending direction of this privately owned amplifying message, refers to that SDN controller is to SDN when such as arranging 2
Switch direction, Test Type refers to Network Quality Analysis type, and other field can refer in existing standard agreement privately owned expansion
The definition of exhibition message.
One specific embodiment of the privately owned amplifying message of table 2: the first
SDN switch obtains the protocol type in the first privately owned amplifying message, prepares to proceed by the network quality of correspondence
Test.Then, SDN controller builds corresponding test packet according to Network Quality Analysis type.Such as: Network Quality Analysis class
Type is that TCP message connects time delay, and SDN controller can generate TCP test packet, and SDN controller is according to the forwarding road of user's message
Footpath, the entrance SDN switch of transmission test packet to forward-path.
Preferably, step S3 specifically includes:
After entrance SDN switch completes the test of Ingress Network quality analysis, test packet configures Network Quality Analysis
Type, the Network Quality Analysis information of entrance, and the outlet SDN switch sent to forward-path；
Outlet SDN switch generates the second privately owned amplifying message and sends to SDN controller, in the second privately owned amplifying message
Configuration Network Quality Analysis type, the Network Quality Analysis information of entrance and the Network Quality Analysis information of outlet；
SDN controller obtains the Network Quality Analysis information of the entrance in the second privately owned amplifying message and the network matter of outlet
Component analysis information.
In specific implementation process, after entrance SDN switch receives test packet, start corresponding Network Quality Analysis and survey
Examination.SDN switch obtains the action command of network quality information according to configuration in the expansion field of stream table, can obtain test report
Literary composition is in the Network Quality Analysis information of entrance.After entrance SDN switch completes test, test packet configures network quality
Analysis type, the Network Quality Analysis information of entrance, and the outlet SDN switch sent to forward-path.Outlet SDN exchange
After machine obtains test packet, according to the Network Quality Analysis type of test packet, carry out correspondingly Network Quality Analysis test.
After outlet SDN switch has been tested, obtain the action command of network quality information according to configuration in the expansion field of stream table,
The test packet Network Quality Analysis information in outlet can be obtained.Outlet SDN switch generates the second privately owned amplifying message and sends out
Deliver to SDN controller, in the second privately owned amplifying message configure Network Quality Analysis type, the Network Quality Analysis information of entrance and
The Network Quality Analysis information of outlet.SDN controller obtains the second privately owned amplifying message, according in the second privately owned amplifying message
Network Quality Analysis information is analyzed, such that it is able to preferably optimize network environment.Network Quality Analysis information, such as: can
To be message packet loss, message transmissions delay, file transfer rate etc..Second privately owned amplifying message is as shown in table 3, and table 3 is given
The specific embodiment of the second privately owned amplifying message, wherein Experimenter Type arranges 1 and refers to that SDN switch is controlled to SDN
Device direction processed, Test Type refer to Network Quality Analysis type, the header field of privately owned amplifying message include Version, Type,
Length, Transaction Id, Experimenter, Experimenter type field information, can be found in the first privately owned expansion
Exhibition message.
One specific embodiment of the privately owned amplifying message of table 3: the second
With specific embodiment, step S3 is specifically described below.In this specific embodiment, such as Network Quality Analysis class
Type is that TCP message connects time delay.SDN controller simulation TCP message connects, and generates TCP test packet and sends out on forward-path
Deliver to entrance SDN switch.Entrance SDN switch receives TCP message, starts TCP message and connects delay testing.Perform this step
Before Zhou, in step s 2, write in the action field (action) of stream table " current time stamp can be inserted press out port and turn
Transmit messages literary composition " etc. instruction.After entrance SDN switch completes test, according to the action command of stream table, obtain test packet at entrance
The angle of incidence stamp of SDN switch.Entrance SDN switch is encapsulated into timestamp and Network Quality Analysis in this TCP test packet
Type, and forward this test packet to exporting SDN switch according to forward-path.Outlet SDN switch receives TCP test report
Literary composition, after completing test, obtain TCP test packet goes out timestamp.Outlet SDN switch is according to the Network Quality Analysis class obtained
Type, the angle of incidence stab and go out timestamp, and transmission the second privately owned amplifying message, to SDN controller, is joined in the second privately owned amplifying message
Put Network Quality Analysis type, angle of incidence stamp and go out timestamp.SDN controller obtains the angle of incidence stamp of TCP test packet and goes out
Timestamp, analyzes the transmission delay of TCP test packet, it can be determined that whether this forward-path is optimal path, if it is not, then
Select optimal path.Wherein, table 4 gives the second privately owned amplifying message structure in the present embodiment, wherein Experimenter
Type arrange 1 refer to SDN switch to SDN controller direction, Test Type refers to Network Quality Analysis type, privately owned extension report
The header field of literary composition includes Version, Type, Length, Transaction Id, Experimenter, Experimenter type
Field information.
Table 4: the second privately owned amplifying message structure in the present embodiment
SDN controller receives the user's message that SDN switch sends in the present embodiment, obtains the agreement in user's message
Type, SDN controller carries out correspondingly network quality test according to protocol type, notice SDN switch.SDN switch is measured
Network quality information in message repeating process, and report SDN controller.Thus SDN controller is according to the network matter obtained
Component analysis information is analyzed, and then can provide more preferable network service quality, optimizes network environment.
Below, the SDN system with inventive network mass analysis function will be described in detail.
Refer to the SDN system structure schematic diagram that Fig. 3, Fig. 3 are one embodiment of the invention.As it is shown on figure 3, SDN
Network includes user side and network side, and network side includes some SDN switch and SDN controller, and some SDN switch constitute
Data each node in network transmits, SDN controller then controls these SDN switch logarithms and executes the operations such as transmitting-receiving factually.
In the present invention, SDN switch, in addition to existing switch function, is also responsible in measured message repeating process
Network quality information, and report SDN controller,；
In the present invention, SDN controller, in addition to existing control function, is also responsible for the protocol type according to user's message
Notice SDN switch carries out network quality test, and obtains the network quality information of the message that SDN switch reports.
Fig. 4 is the SDN controller architecture schematic diagram of one embodiment of the invention.As shown in Figure 4, SDN controller specifically wraps
Include:
Control module 40, can open and close the Network Quality Analysis function of SDN for SDN controller；
Stream table module 41, configures according to source IP address, the purpose IP address of user's message for SDN controller in stream table
The forward-path of this user's message, in the expansion field of stream table, configuration obtains the action command of network quality information simultaneously, and
Issue this stream table all SDN switch to forward-path；
User type processing module 42, for SDN controller according to the protocol type of user's message, notifies SDN switch
Test；
Statistical module 43, for obtaining the network quality information that SDN switch reports.
Openflow agreement supported by SDN controller, supports the generation of stream table, safeguards, forwards, supports privately owned amplifying message.
In SDN controller, control module 40 can open and close the Network Quality Analysis function of SDN.SDN controller is opened
The Network Quality Analysis function of SDN, SDN controller receives the user's message from client that SDN switch sends.
SDN controller, in stream table module 41, configures this user report according to source IP address, the purpose IP address of user's message in stream table
The forward-path of literary composition, and in the expansion field of stream table, configuration obtains the action command of network quality information, issues this stream table and arrives
All SDN switch on forward-path.In stream table, configuration obtains the action command of network quality information, when switch receives
During to stream table, the action of test according to the command adapted thereto in action field, can be completed.In user type processing module 42, SDN
Controller obtains the protocol type in user's message, carries out corresponding network quality according to protocol type notice SDN switch
Test.After SDN switch network quality has been tested, SDN controller obtains the net that SDN switch reports in statistical module 43
Network quality information, can preferably provide network quality service according to the network quality information obtained.
Fig. 5 is the SDN switch structural representation of one embodiment of the invention.As it is shown in figure 5, SDN switch is specifically wrapped
Include:
Measurement module 50, the network quality information in SDN switch measured message repeating process；
Information feedback module 51, for SDN switch report network quality information to SDN controller.
SDN switch supports the stream table of OpenFlow agreement.SDN switch receives the stream table that SDN controller issues.SDN
Controller notice SDN switch starts network quality test, and then SDN switch is in measurement module 50, starts measured message
Network quality information in repeating process.After SDN switch has been tested, according in stream table, extended field obtains network matter
The action command of amount information, obtains the network quality information of message.SDN switch in information feedback module, will obtain net
Network quality information reports SDN controller.
Fig. 6 is the structural representation of the SDN controller of further embodiment of the present invention.Shown in Figure 6, SDN of the present invention
Controller architecture, including control module 40, flows table module 41, and user type processing module 42, statistical module 43, it is performed
Operation may refer to each concrete module of 4, wherein, user type processing module 42, specifically includes:
User type recognition unit 60, the protocol type in SDN controller identification user's message；
First privately owned amplifying message unit 61, generates the first privately owned amplifying message for SDN controller according to protocol type
Send the entrance SDN switch to forward-path, configure, in the first privately owned amplifying message, the network that this protocol type is corresponding
Quality analysis type；
Test packet unit 62, generates the corresponding test packet of Network Quality Analysis type for SDN controller, and sends
Entrance SDN switch to forward-path.
In specific implementation process, SDN controller, in user type recognition unit 60, extracts what SDN switch sent
Protocol type in user's message.SND controller, in the first privately owned amplifying message unit 61, generates first according to protocol type
Privately owned amplifying message sends the entrance SDN switch of the forward-path to user's message, and joins in the first privately owned amplifying message
Putting the Network Quality Analysis type that this protocol type is corresponding, SDN controller is by sending the first privately owned amplifying message notice entrance
SDN switch starts network quality test, and then SDN controller is in test packet signal generating unit 62, generates network quality and divides
The analysis corresponding test packet of type, the access switch in concurrent sending test packet to forward-path.
Fig. 7 is the structural representation of the SDN switch of further embodiment of the present invention.Shown in Figure 7, SDN of the present invention
Switch architecture, including measurement module 50, information feedback module 51, its performed operation may refer to each concrete module of 5,
Wherein, information feedback module 51, specifically include:
Second privately owned amplifying message signal generating unit 70, for SDN switch according to Network Quality Analysis type, network quality
Analysis information generates the second privately owned amplifying message；
Transmitting element 71, sends to the second privately owned amplifying message SDN controller for SDN switch；
After SDN switch has been tested, obtaining the network quality information of test packet, then SDN switch is private second
Have in amplifying message signal generating unit 70, generate the second privately owned extension according to Network Quality Analysis type and Network Quality Analysis information
Message, configures Network Quality Analysis type and Network Quality Analysis information in the second privately owned amplifying message, and at transmitting element
In 71, send the second privately owned amplifying message to SDN controller.
In sum, a kind of Network Quality Analysis method based on SDN of the present invention and SDN system, based on SDN, can
To obtain the Network Quality Analysis information of message easily, and according to these information, preferably provide network quality service.
Above-described embodiment all can be repaiied by any those skilled in the art under the spirit and the scope of the present invention
Decorations and change.Therefore, the scope of the present invention, should be as listed by claims.
Claims (10)
1. a Network Quality Analysis method based on SDN, described SDN includes customer side and network side, and network side includes
Some SDN switch and at least one SDN controller, the lateral network side of described client sends message, and described SDN switch is to institute
State SDN controller to E-Packet, it is characterised in that described analysis method includes:
Step S1, described SDN controller receives the user's message that described SDN switch sends, obtains in described user's message
Protocol type；
Step S2, described SDN controller, according to described protocol type, notifies that described SDN switch is tested；
Step S3, the network quality information in described SDN switch measured message repeating process, and report described SDN control
Device, completes test.
A kind of Network Quality Analysis method based on SDN, it is characterised in that step S2 is specifically wrapped
Include:
Described SDN controller configures described user report according to source IP address, the purpose IP address of described user's message in stream table
The forward-path of literary composition, in the expansion field of described stream table, configuration obtains the action command of described network quality information simultaneously；
Described SDN controller issues the described stream table all SDN switch to described forward-path；
Described SDN controller generates the first privately owned amplifying message according to described protocol type and sends entering to described forward-path
Mouth SDN switch, configures, in described first privately owned amplifying message, the Network Quality Analysis type that described protocol type is corresponding；
Described SDN controller generates the test packet that described Network Quality Analysis type is corresponding, sends described test packet to institute
State the entrance SDN switch on forward-path.
A kind of Network Quality Analysis method based on SDN, it is characterised in that described first privately owned
Amplifying message includes the header field of this first privately owned amplifying message and described Network Quality Analysis type.
A kind of Network Quality Analysis method based on SDN, it is characterised in that described network matter
Component analysis type includes that TCP message connects time delay, FTP message connects time delay, file transfer rate type, message packet loss type
One or several combinations.
A kind of Network Quality Analysis method based on SDN, it is characterised in that step S3 is specifically wrapped
Include:
After described entrance SDN switch completes the test of Ingress Network quality analysis, described test packet configures described network
Quality analysis type, the Network Quality Analysis information of entrance, and the outlet SDN switch sent to described forward-path；
Described outlet SDN switch generates the second privately owned amplifying message and sends to SDN controller, in the second privately owned amplifying message
Configure described Network Quality Analysis type, the Network Quality Analysis information of described entrance and the Network Quality Analysis information of outlet；
Described SDN controller obtains Network Quality Analysis information and the net of outlet of the entrance in described second privately owned amplifying message
Network mass analysis information.
A kind of Network Quality Analysis method based on SDN, it is characterised in that described second privately owned
Amplifying message includes the header field of this second privately owned amplifying message, described Network Quality Analysis type and the network matter of described entrance
The Network Quality Analysis information of component analysis information and outlet.
7. a kind of based on SDN the Network Quality Analysis method as described in claim 5 or 6, it is characterised in that described network
Mass analysis information include message packet loss, message transmissions postpone, file transfer rate one or several.
8. a SDN system, described SDN includes that customer side and network side, described network side include that some SDN exchange
Machine and at least one SDN controller, it is characterised in that:
Described SDN controller, is used for notifying that described SDN switch carries out network quality according to the protocol type of described user's message
Test, and obtain the network quality information of the message that described SDN switch reports, including:
Control module, can open and close the Network Quality Analysis function of SDN for described SDN controller；
Stream table module, configures institute according to source IP address, the purpose IP address of user's message for described SDN controller in stream table
Stating the forward-path of user's message, in the expansion field of described stream table, the action of configuration acquisition network quality information refers to simultaneously
Order, and issue the described stream table all SDN switch to described forward-path；
User type processing module, for described SDN controller according to the protocol type of described user's message, notifies described SDN
Switch is tested；
Statistical module, for obtaining the network quality information that described SDN switch reports；
Described SDN switch, for the network quality information in measured message repeating process, and reports described SDN controller,
Including:
Measurement module, the network quality information in described SDN switch measured message repeating process；
Information feedback module, reports described network quality information to described SDN controller for described SDN switch.
9. a kind of SDN system as claimed in claim 8, it is characterised in that described user type processing module specifically includes:
User type recognition unit, the protocol type in user's message described in described SDN controller identification；
First privately owned amplifying message unit, generates the first privately owned extension report for described SDN controller according to described protocol type
Literary composition sends the entrance SDN switch to described forward-path, configures described protocol class in described first privately owned amplifying message
The Network Quality Analysis type that type is corresponding；
Test packet unit, generates the described corresponding test packet of Network Quality Analysis type for described SDN controller, concurrently
Deliver to the entrance SDN switch of described forward-path.
10. a kind of SDN system as claimed in claim 8, it is characterised in that described information feedback module specifically includes:
Second privately owned amplifying message signal generating unit, for described SDN switch according to described Network Quality Analysis type, network matter
Component analysis information generates described second privately owned amplifying message；
Transmitting element, sends to SDN controller described in described second privately owned amplifying message for described SDN switch.
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