CN105359462A - Method and device for testing new flow creating speed of sdn - Google Patents
Method and device for testing new flow creating speed of sdn Download PDFInfo
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- CN105359462A CN105359462A CN201480038264.4A CN201480038264A CN105359462A CN 105359462 A CN105359462 A CN 105359462A CN 201480038264 A CN201480038264 A CN 201480038264A CN 105359462 A CN105359462 A CN 105359462A
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- H04L43/00—Arrangements for monitoring or testing data switching networks
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Abstract
本发明实施例提供一种测试SDN建新流速率的方法和装置，通过测试装置从第一时刻T1开始，以输入速率V1向转发设备循环发送S个数据包，其中，S个数据包在第一时刻T1为建新流的数据包；测试转发设备的输出速率V2；确定第二时刻T2，输出速率V2从第二时刻T2起，在预设时间段内持续不小于输入速率V1；根据V＝S/(T2-T1)，确定SDN建新流速率，其中，V表示SDN建新流速率。也就是，当输出速率在预设时间段内持续不小于输入速率时，说明控制器已经创建完S个新流的流表，并已下发到转发设备，后续的数据包经过转发设备时，转发设备可以直接根据流表进行转发，而无需再上报控制器，所以T2-T1也就是新建S个新流所用的时间，因此，根据V＝S/(T2-T1)，确定SDN建新流速率更加合理。
The embodiment of the present invention provides a method and device for testing the rate of SDN new stream creation. The test device starts from the first moment T1 and sends S data packets to the forwarding device cyclically at the input rate V1, wherein the S data packets are at the first Time T1 is the data packet for creating a new flow; test the output rate V2 of the forwarding device; determine the second time T2, the output rate V2 shall not be less than the input rate V1 for a preset period of time from the second time T2; according to V=S /(T2-T1), determine the rate of establishing a new flow in SDN, where V represents the rate of establishing a new flow in SDN. That is, when the output rate is not less than the input rate for a preset period of time, it means that the controller has created flow tables for S new flows and delivered them to the forwarding device. When subsequent data packets pass through the forwarding device, The forwarding device can directly forward according to the flow table without reporting to the controller, so T2-T1 is the time it takes to create S new flows. Therefore, according to V=S/(T2-T1), determine the SDN flow rate more reasonable.
Description
The method and apparatus that test SDN builds new stream speed
Technical field
Network is defined the present embodiments relate to the communication technology, more particularly to a kind of test software
(Software Define Network, hereinafter referred to as：SDN the method and apparatus for) building new stream speed.Background technology
The framework that SDN is separated using forwarding and control, controller is responsible for generation, maintenance and configuration of flow table etc., the flow table that forwarding unit is issued according to controller carries out the forwarding of packet, so as to, realize in the case where not influenceing legacy network normal discharge, new network framework is realized and disposed in existing network.
In SDN, it is to weigh an important indicator of network performance to build new stream speed, in the prior art, and a kind of method that new stream speed is built in calculating is, according to formula：Build new stream speed=build new stream sum/((packet loss sum）/ (packet sending speed））Calculate.
However, using the method for prior art only in packet sending speed and packet loss speed under the same conditions, calculating build that new stream speed is just closest to network actually build new stream speed, therefore, prior art test build new stream speed method it is unreasonable.The content of the invention
To solve problem of the prior art, the embodiment of the present invention provides the method and apparatus that a kind of test SDN builds new stream speed.
First aspect of the embodiment of the present invention provides a kind of method that test SDN builds new stream speed, it is characterised in that including：
Test device cycles through S packet with input rate VI since the first moment T1 to forwarding unit, wherein, the S is the integer more than or equal to 1, and the S packet is in the packet that first moment T1 is new stream；
The test device tests the output speed V2 of the forwarding unit;
The test device determined for the second moment T2, and the output speed V2 is persistently not less than the input rate VI from second moment T2 in preset time period；
The test device determines that the SDN builds new stream speed according to V=S/ (T2-T1), wherein,
The V represents that the SDN builds new stream speed.
With reference in a first aspect, in the first possible implementation, the forwarding unit is received after any one packet of the S packet, judge described in any one packet whether be new stream packet;If any one described packet is the packet of the new stream, any one described packet is then reported controller by the forwarding unit, the controller creates flow table according to any one described packet, the flow table issuance is given the forwarding unit, the forwarding unit any one packet according to being exported the flow table by the controller；
If any one described packet is not the packet of the new stream, the forwarding unit then any one packet according to the output of the packet corresponding flow table.
With reference to first aspect or the first possible implementation, in second of possible implementation, the test device determines that the SDN is built after new stream speed, in addition to：
New stream speed is built by SDN described in UI interface displays.
Second aspect of the embodiment of the present invention provides the device that a kind of test SDN builds new stream speed, including：Sending module, for since the first moment T1, S packet to be cycled through to forwarding unit with input rate VI, wherein, the S is the integer more than or equal to 1, and the S packet is the packet for building new stream at first moment T1；
Test module, the output speed V2 for testing the forwarding unit;
Determining module, for determining for the second moment T2, the output speed V2 is persistently not less than the input rate from second moment T2 in preset time period；
Processing module, for according to V=S/ (T2-T1), determining that the SDN builds new stream speed, wherein, the V represents that the SDN builds new stream speed.
With reference to second aspect, in the first possible implementation, described device also includes：Display module, for showing that SDN builds new stream speed.
The method and apparatus that test SDN provided in an embodiment of the present invention builds new stream speed, by test device since the first moment T1, S packet is cycled through to forwarding unit with input rate VI, wherein, S packet is the packet for building new stream in the first moment T1；Test the output speed V2 of forwarding unit;The second moment T2 is determined, output speed V2 is persistently not less than input rate VI from the second moment T2 in preset time period；According to V=S/ (T2-T1), determine that SDN builds new stream speed, wherein, V represents that SDN builds new stream speed.It is, when output speed is persistently not less than input rate in preset time period, illustrating that controller has created the flow table of S new stream, and being issued to forwarding to set
It is standby, when follow-up packet passes through forwarding unit, forwarding unit can be forwarded directly according to flow table, without reporting controller again, i.e. so the time used in the newly-built S new stream of T2-T1, therefore, according to V=S/ (T2-T1), determine that SDN builds new stream speed more reasonable.Brief description of the drawings is in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 builds the schematic flow sheet of the embodiment of the method one of new stream speed for present invention test SDN；Fig. 2 is a kind of application scenarios schematic diagram of the invention；
Fig. 3 is another application scenarios schematic diagram of the invention；
Fig. 4 is the test curve figure of invention；
Fig. 5 builds the structural representation of the device embodiment one of new stream speed for present invention test SDN；Fig. 6 builds the structural representation of the device embodiment two of new stream speed for present invention test SDN.The technical scheme in the embodiment of the present invention is clearly and completely described below in conjunction with the accompanying drawing in the embodiment of the present invention for embodiment, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
Term " first ", " second ", " the 3rd " " the 4th " in description and claims of this specification and above-mentioned accompanying drawing etc.（If there is）It is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that the data so used can be exchanged in the appropriate case, so that embodiments of the invention described herein can for example be implemented with the order in addition to those for illustrating or describing herein.In addition, term " including " and " having " and their any deformation, it is intended to cover non-exclusive include, for example, contain that Yi Xi Lie Walk are rapid or process, method, system, product or equipment of unit be not necessarily limited to clearly to list that Na Xie Walk are rapid or unit, but may include not list clearly or for these processes, method, product or Qi intrinsic Ta Walk of equipment
Rapid or unit.
In SDN system architecture, forwarding unit is received after packet, first judge whether forwarding unit is stored with the corresponding flow table of the packet, if forwarding unit does not store the corresponding flow table of the packet locally, illustrate that the packet belongs to the packet of new stream, the packet is then reported into controller, controller creates the corresponding flow table of the packet, and it is handed down to each forwarding unit on the forward-path of the packet, each forwarding unit storage flow table, and the packet is forwarded according to flow table.If forwarding unit is received after packet, forwarding unit has stored the corresponding flow table of the packet, then forwarding unit directly can forward the packet according to corresponding flow table.
The technical scheme that the test SDN of the present invention builds new stream speed is at least applied to following two kinds of scenes, and two kinds of scenes are respectively：The first scene：One forwarding unit is received after the packet of a new stream, the packet is reported into controller, controller creates the corresponding flow table of the packet, and by flow table issuance to forwarding unit, forwarding unit forwards the packet according to the flow table, in this application scenarios, build new stream speed and refer to enter a forwarding unit to the speed of the whole process forwarded from the forwarding unit from a packet；Second of scene：One forwarding unit is received after the packet of a new stream, the packet is reported into controller, controller creates the corresponding flow table of the packet, and by each forwarding unit on the forward-path of flow table issuance to the packet, the flow table that each forwarding unit on the forward-path is issued according to controller forwards the packet, in this application scenarios, build new stream speed to refer to after first forwarding unit receives the packet, the speed for the whole process that last forwarding unit on forward-path forwards the packet.
Either which kind of above-mentioned application scenarios, the core concept for the method that test SDN builds new stream speed is identical, and the core concept of technical scheme is：Test device is since the first moment T1, S packet is cycled through to forwarding unit with constant input rate VI, wherein, S is the integer more than or equal to 1, S packet is in the packet that the first moment T1 is new stream, that is, most starts packet of the S packet of transmission for S new stream；Test the output speed V2 of forwarding unit;The second moment T2 is determined, output speed V2 is persistently not less than input rate VI from the second moment T2 in preset time period, according to V=S/ (T2-T1), determine that SDN builds new stream speed, wherein, V represents that SDN builds new stream speed.Namely, when output speed is persistently not less than input rate in preset time period, illustrate that controller has created the flow table of S new stream, and it has been issued to forwarding unit, when the follow-up packet inputted with constant rate of speed passes through forwarding unit, forwarding unit can be forwarded directly according to corresponding flow table, without reporting controller, i.e. so newly-built S new stream institutes of T2-T1 again
Time, therefore, according to V=S/ (T2-T1), determine that SDN builds that new stream speed is more reasonable, the scope of application is wider.
Technical scheme is described in detail with specifically embodiment below.These specific embodiments can be combined with each other below, may be repeated no more for same or analogous concept or process in some embodiments.
Fig. 1 builds the schematic flow sheet of the embodiment of the method one of new stream speed for present invention test SDN, as shown in figure 1, the method for the present embodiment is as follows：
S101 :Test device cycles through s packet with input rate VI since the first moment T1 to forwarding unit.
Wherein, S is the integer more than or equal to 1, and S packet is in the packet that the first moment T1 is new stream.
For the first above-mentioned scene, the annexation of test device and forwarding unit is as shown in Fig. 2 Fig. 2 is a kind of application scenarios schematic diagram of the invention；For above-mentioned second of scene, the annexation of test device and forwarding unit is as shown in figure 3, Fig. 3 is another application scenarios schematic diagram of the invention；
With reference to Fig. 2 or Fig. 3, test device cycles through S packet with input rate VI since the first moment T1 to forwarding unit；Specifically, s packet for most starting input to forwarding unit with input rate VI belongs to S different data flows, at the T1 moment, this S different data flows belong to s new stream for forwarding unit, it is required for obtaining flow table to controller report, packet could be forwarded, send after the S packet most started, continue to input the packet for belonging to above-mentioned S data flow with identical input rate VI；For example：The packet of 5 data flows is inputted with VI input rate, 5 data streams are stream 1, stream 2, stream 3, stream 4 respectively and flow 5, then the order of input data bag is：5 packets be belonging respectively to the stream of stream 15,5 packets be belonging respectively to the stream of stream 15 ..., 5 packets are belonging respectively to the stream of stream 15.
It should be noted that in Fig. 2 scene, cycle through S packet to forwarding unit and be directed to forwarding unit 201 and send.In Fig. 3 scene, cycle through S packet to forwarding unit and be directed to forwarding unit 301 and send.
In SDN frameworks, forwarding unit is received after any one packet of above-mentioned S packet, judge any of the above-described packet whether be new stream packet；
If any of the above-described packet is the packet of above-mentioned new stream, any one described packet is then reported controller by forwarding unit, and controller noted above creates flow table according to any of the above-described packet, and controller will
Above-mentioned flow table issuance exports any of the above-described packet to forwarding unit, forwarding unit according to above-mentioned flow table；If any of the above-described packet is not the packet of above-mentioned new stream, forwarding unit then exports any of the above-described packet according to the corresponding flow table of above-mentioned packet.
S102:Test device tests the output speed V2 of forwarding unit.
Test device tests output speed V2 of the forwarding unit at each moment.
It should be noted that in Fig. 2 scene, the output speed tested here refers to the output speed of forwarding unit 201.In Fig. 3 scene, the output speed tested here refers to (last forwarding unit namely on forward-path of forwarding unit 302）Output speed.
S103:Test device determines the second moment T2, and output speed V2 is persistently not less than input rate V 1 from the second moment T2 in preset time period.
When output speed is persistently not less than input rate VI in preset time, illustrate that controller has created the flow table of S data flow, and it has been issued to forwarding unit, forwarding unit is received after the packet of this S data flow, directly it can be forwarded according to corresponding flow table, without reporting controller again, i.e. so time used in T2 and T1 time difference newly-built S new stream.
Refer in preset time mentioned here within the time before test terminates, testing the condition terminated is, output speed is persistently equal to input rate within a certain period of time, namely output speed converges on input rate, can rule of thumb it be set in stable state, certain time here.
Present invention also offers test curve figure, as shown in figure 4, ordinate represents output speed in test curve figures of the Fig. 4 for invention, Fig. 4, abscissa represents the time, from fig. 4, it can be seen that T2 is the time point where the circle on the left side.The bursty data amount between left side circle and the right circle derives from the storage forwarding for the packet built after new stream is completed in Fig. 4.After the time point where circle on the right, output speed is constantly equal to input rate, and test terminates can be within the certain time after output speed is constantly equal to input rate.
S104:Test device determines that SDN builds new stream speed according to V=S/ (T2-T1).
Wherein, V represents that SDN builds new stream speed.
It is to build the time used in S new stream in T2 and T1 time difference, therefore, passes through V=S/ (T2-T1), you can obtains SDN and build new stream speed.
In the present embodiment, by test device since the first moment T1, S packet is cycled through to forwarding unit with input rate VI, wherein, S packet is the packet for building new stream in the first moment T1；Test the output speed V2 of forwarding unit;Determine the second moment T2, output speed V2 is from second
Moment T2 is risen, and input rate VI is persistently not less than in preset time period;According to V=S/ (T2-T1), determine that SDN builds new stream speed, wherein, V represents that SDN builds new stream speed.Namely, when output speed is persistently not less than input rate in preset time period, illustrate that controller has created the flow table of S new stream, and it has been issued to forwarding unit, when the follow-up packet inputted with constant rate of speed passes through forwarding unit, forwarding unit can be forwarded directly according to corresponding flow table, without reporting controller again, i.e. so the time used in the newly-built S new stream of T2-T1, therefore, according to V=S/ (T2-T1), determine that SDN builds that new stream speed is more reasonable, the scope of application is wider.
In the above-described embodiments, test device determines that SDN is built after new stream speed, new stream speed can be built by the above-mentioned SDN of UI interface displays, with for reference.
It should be noted that in technical scheme, in test process, the packet that forwarding unit only transmitted test device is sent, not from other equipment received data packet, to avoid the influence to test result accuracy.
Fig. 5 builds the structural representation of the device embodiment one of new stream speed for present invention test SDN, as shown in Figure 5, the device of the present embodiment includes sending module 501, test module 502, determining module 503 and processing module 504, wherein, sending module 501 is used for since the first moment T1, S packet is cycled through to forwarding unit with input rate VI, wherein, the S is the integer more than or equal to 1, and the S packet is the packet for building new stream at first moment T1；Test module 502 is used for the output speed V2 for testing the forwarding unit;Determining module 503 is used to determine for the second moment T2, and the output speed V2 is persistently not less than the input rate from second moment T2 in preset time period；Processing module 504 is used for according to V=S/ (T2-T1), determines that the SDN builds new stream speed, wherein, the V represents that the SDN builds new stream speed.
Fig. 6 builds the structural representation of the device embodiment two of new stream speed for present invention test SDN, and Fig. 6 is the Jin mono- Walk on the basis of embodiment illustrated in fig. 5, in addition to display module 505, and display module 505 is used to show that SDN builds new stream speed.
Fig. 5 or the corresponding executable above method embodiment of the device of embodiment illustrated in fig. 6 technical scheme, its implementing principle and technical effect are similar, and here is omitted.
One of ordinary skill in the art will appreciate that：Realize that above-mentioned each method embodiment full portions or Bu Fen Walk can be completed by the related hardware of programmed instruction suddenly.Foregoing program can be stored in a computer read/write memory medium.Upon execution, it is rapid that execution includes above-mentioned each method embodiment Walk to the program;And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various to be deposited
Store up the medium of program code.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.
Claims (1)
- Claims1st, a kind of method that test SDN builds new stream speed, it is characterised in that including：Test device cycles through S packet with input rate VI since the first moment T1 to forwarding unit, wherein, the S is the integer more than or equal to 1, and the S packet is in the packet that first moment T1 is new stream；The test device tests the output speed V2 of the forwarding unit;The test device determined for the second moment T2, and the output speed V2 is persistently not less than the input rate VI from second moment T2 in preset time period；The test device determines that the SDN builds new stream speed according to V=S/ (T2-T1), wherein, the V represents that the SDN builds new stream speed.2nd, according to the method described in claim 1, it is characterised in thatThe forwarding unit is received after any one packet of the S packet, judge described in any one packet whether be new stream packet；If any one described packet is the packet of the new stream, any one described packet is then reported controller by the forwarding unit, the controller creates flow table according to any one described packet, the flow table issuance is given the forwarding unit, the forwarding unit any one packet according to being exported the flow table by the controller；If any one described packet is not the packet of the new stream, the forwarding unit then any one packet according to the output of the packet corresponding flow table.3rd, method according to claim 1 or 2, it is characterised in that the test device determines that the SDN is built after new stream speed, in addition to：New stream speed is built by SDN described in UI interface displays.4th, a kind of test SDN builds the device of new stream speed, it is characterised in that including：Sending module, for since the first moment T1, S packet to be cycled through to forwarding unit with input rate VI, wherein, the S is the integer more than or equal to 1, and the S packet is the packet for building new stream at first moment T1；Test module, the output speed V2 for testing the forwarding unit;Determining module, for determining for the second moment T2, the output speed V2 is persistently not less than the input rate from second moment T2 in preset time period；Processing module, for according to V=S/ (T2-T1), determining that the SDN builds new stream speed, wherein, V represents that the SDN builds new stream speed.5th, device according to claim 4, it is characterised in that also include:Display module, for showing that SDN builds new stream speed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/077389 WO2015172319A1 (en) | 2014-05-13 | 2014-05-13 | Method and device for testing new flow creating speed of sdn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105359462A true CN105359462A (en) | 2016-02-24 |
| CN105359462B CN105359462B (en) | 2019-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201480038264.4A Expired - Fee Related CN105359462B (en) | 2014-05-13 | 2014-05-13 | The method and apparatus that test SDN builds new flow velocity rate |
Country Status (2)
| Country | Link |
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| CN (1) | CN105359462B (en) |
| WO (1) | WO2015172319A1 (en) |
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| CN107835109A (en) * | 2017-11-28 | 2018-03-23 | 瑞斯康达科技发展股份有限公司 | A kind of method and system for the Packet Transport Network network that test software defines |
| CN109379163A (en) * | 2018-09-05 | 2019-02-22 | 新华三技术有限公司 | A kind of message forwarding rate control method and device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105359462B (en) | 2019-05-28 |
| WO2015172319A1 (en) | 2015-11-19 |
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