CN108306759A - The method and apparatus of disturbance simulation is carried out for the link between Leaf-Spine interchangers - Google Patents
The method and apparatus of disturbance simulation is carried out for the link between Leaf-Spine interchangers Download PDFInfo
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- CN108306759A CN108306759A CN201711455796.XA CN201711455796A CN108306759A CN 108306759 A CN108306759 A CN 108306759A CN 201711455796 A CN201711455796 A CN 201711455796A CN 108306759 A CN108306759 A CN 108306759A
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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
- H04L43/50—Testing arrangements
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Abstract
The present invention provides a kind of method for carrying out disturbance simulation for the link between Leaf Spine interchangers in network, the method includes：Disconnect the link between Leaf interchangers and Spine interchangers；By the Spine interchangers and the first network card coupling and by the Leaf interchangers and the second network card coupling；And first network interface card is connected to via server with second network interface card, so that the flow entered from first network interface card is all transmitted to second network interface card via the server, and the flow entered from second network interface card is all transmitted to first network interface card via the server, wherein, it is simulated by the first software in the server and generates abnormal disturbances.The present invention also provides the equipment that the link being directed between Leaf Spine interchangers in a kind of network carries out disturbance simulation.
Description
Technical field
The present invention relates to cloud net monitoring technologies, more particularly to the link being directed between Leaf-Spine interchangers is disturbed
The method and apparatus of simulation.
Background technology
Due to the change of network technology, with software defined network（Software Defined Network, SDN）To represent
New network of Emulex network innovation framework provide the realization method of network virtualization --- by by network equipment control plane and data surface
It separates, realizes the flexible control of network flow, network is made to become more intelligent as pipeline.
Occur for the high rate communication link between Leaf-Spine interchangers in SDN Fabric networks to test
The situation of abnormal disturbances, currently existing scheme generally pass through Si Bailun（Spirent）Or the network tester of the profession such as Ixia（Example
Such as Attero-100G/40G model network harm instrument）Carry out analog network link（Such as 40G network links）Abnormal disturbances.But
It is all human relations primary like that（Spirent）Or the market price of the network tester of the profession such as Ixia is all more than 200,000 U.S. dollars, cost
It is high.In addition, utilizing Si Bailun（Spirent）Or the damage of the network tester simulation 40G links of the profession such as Ixia, in technology
On realized by dedicated network chip, technology is complex, and versatility is not strong.
Therefore, it is necessary to a kind of improved link between Leaf-Spine interchangers carry out disturbance simulation method and
Equipment.
It is only intended to increase understanding of the overall background of the invention in the information of background parts of the present invention for above disclosure, and
It is not construed as recognizing or implying in any form that information composition has been existing well known to persons skilled in the art
Technology.
Invention content
In consideration of it, according to an aspect of the invention, there is provided between Leaf-Spine interchangers in a kind of network
Link carry out disturbance simulation method, the method includes：Disconnect the chain between Leaf interchangers and Spine interchangers
Road；By the Spine interchangers and the first network card coupling and by the Leaf interchangers and the second network card coupling；And it will be described
First network interface card is connected to via server with second network interface card so that the flow entered from first network interface card is via the service
Device is all transmitted to second network interface card, and the flow entered from second network interface card is all transmitted to via the server
First network interface card, wherein simulated by the first software in the server and generate abnormal disturbances.
In the above-mentioned methods, it is described first network interface card is connected to via server with second network interface card including：Institute
It states in server and bridge is created using virtual switch；And by first network interface card and second network interface card respectively via
One network interface and the second network interface are articulated to the bridge.
In the above-mentioned methods, described to include by the first software simulation generation abnormal disturbances in the server：Institute
It states on the first network interface or second network interface, generation abnormal disturbances is simulated using first software.
In the above-mentioned methods, first software is network harm software or bottom tool.
In the above-mentioned methods, while simulating generation abnormal disturbances by first software in the server, also
Message processing acceleration is carried out using the second software.
According to another aspect of the present invention, it provides a kind of for being directed between Leaf-Spine interchangers in a network
The link equipment that carries out disturbance simulation, the equipment includes：First network interface card is coupled with a Spine interchangers；Second network interface card,
It is coupled with a Leaf interchangers；Server is configured to be connected to first network interface card and second network interface card so that from described first
The flow that network interface card enters all is transmitted to second network interface card, and the stream entered from second network interface card via the server
Amount is all transmitted to first network interface card via the server, wherein is simulated and is produced by the first software in the server
Raw abnormal disturbances, and the link between the Leaf interchangers and the Spine interchangers is disconnected to carry out disturbance mould
It is quasi-.
In above equipment, the server is configured to create bridge using virtual switch, wherein first net
Card and second network interface card are articulated to the bridge via the first network interface and the second network interface respectively.
In above equipment, the server is configured on first network interface or second network interface, using described
First software simulates generation abnormal disturbances.
In above equipment, first software is network harm software or bottom tool.
In above equipment, while the server is configured with the first software simulation generation abnormal disturbances,
Also Message processing acceleration is carried out using the second software.
Compared with prior art, disturbance modeling scheme of the invention by using general server and network interface card hardware
Combination（For example, x86 servers and two 40G network interface cards）To realize high-rate link（Such as 40G links）Abduction disturbance, principle
It is concise, it is versatile, and can effectively realize the abnormal disturbances simulation for network link.In addition, using the technology of the present invention
Scheme simulates the low 1-2 order of magnitude of the overall costs of the abnormal disturbances network harm instrument more professional than on the market.
It is used to illustrate the specific reality of certain principles of the present invention together with attached drawing by include this paper attached drawing and then
Apply mode, other feature and advantage possessed by methods and apparatus of the present invention will more specifically become apparent or be explained
It is bright.
Description of the drawings
Fig. 1 is to indicate that the link being directed between Leaf-Spine interchangers of one embodiment of the present of invention carries out disturbance mould
The schematic diagram of quasi- method；
Fig. 2 is disturbed for the link between Leaf-Spine interchangers in the network for indicate one embodiment of the present of invention
The schematic diagram of the equipment of simulation；And
Fig. 3 is to indicate one embodiment of the present of invention, in the Organization Chart for disturb cloud network when simulating.
Specific implementation mode
Following description describe only certain exemplary embodiments of this invention to instruct how those skilled in the art manufacture and use
The optimal mode of the present invention.In order to instruct inventive principle, some conventional aspects are simplified or have been omitted.Those skilled in the art answer
The modification that the understanding is originated from these embodiments will be fallen within the scope of the present invention.Those skilled in the art should understand that following spies
Sign can be engaged in various ways to form multiple modifications of the present invention.The invention is not limited in following particular implementations as a result,
Mode, and be only limited by the claims and their equivalents.
In the context of the present invention, term " SDN " refers to software defined network, is realized to network by open interface
Software implementation PLC technology.
Term " SDN Fabric " and " SDN switching matrixs " meaning having the same are connected institute's structure by SDN switch
At SDN network.
Term " Leaf ", " Leaf switch " or " Leaf interchangers " indicate leaf interchanger, i.e. in two layers of SDN frameworks
Interchanger as access layer.
Term " Spine ", " Spine switch " or " Spine interchangers " indicate backbone switch, i.e. two layers of SDN frameworks
The middle interchanger as interposer.
Term " OpenvSwitch ", i.e., open virtual switch standard.OpenvSwitch is in the Apache 2.0 to increase income
The multilayer virtual exchange standard of Product-level quality under license, it is intended to extend by programming, and makes huge network automatically（Match
It sets, manage, safeguard）, while also supporting the management interface and agreement of standard（Such as NetFlow, sFlow, SPAN, RSPAN,
CLI, LACP, 802.1ag）.
Term " virtual switch " refers to utilizing virtual platform, the switch element formed by way of software.With passing
The physical switches of system are compared, and virtual switch is likewise supplied with many merits, first, configuration is more flexible.One common service
Device can configure tens of even up to a hundred virtual switches, and port number can be selected flexibly.For example, VMware
Mono- server of ESX can simulate 248 virtual switches, and every interchanger presets virtual port i.e. up to 56；Two
It is that cost is cheaper, the performance that expensive general switch can be only achieved can be often obtained by virtual switch, such as
The Hyper-V platforms of Microsoft, the online speed between virtual machine and virtual switch is easily up to 10Gbps.
Fig. 1 is to indicate that the link being directed between Leaf-Spine interchangers of one embodiment of the present of invention carries out disturbance mould
Quasi- method 1000.Wherein, the method 1000 includes the following steps：
In the step 120, the link between Leaf interchangers and Spine interchangers is disconnected；
In step 140, by the Spine interchangers and the first network card coupling and by the Leaf interchangers and the second network interface card coupling
It closes；And
In a step 160, first network interface card is connected to via server with second network interface card so that from first network interface card
The flow of entrance is all transmitted to second network interface card via the server, and the flow warp entered from second network interface card
First network interface card is all transmitted to by the server, wherein different by the simulation generation of the first software in the server
Often disturbance.
In one embodiment, step 160 includes：Bridge is created using virtual switch in the server；With
And first network interface card and second network interface card are articulated to the bridge via the first network interface and the second network interface respectively.At one
In embodiment, step 160 further includes：On first network interface or second network interface, simulated using first software
Generate abnormal disturbances.First software can be network harm software（Such as netimpair etc.）Or the tool of more bottom
（Such as the tc tools etc. of Linux）.In one embodiment, it is generated by first software simulation in the server different
Often while disturbance, the second software is also utilized（Such as DPDK OpenvSwitch）To carry out Message processing acceleration.
Fig. 2 is carried out for the link between Leaf-Spine interchangers in the network for indicate one embodiment of the present of invention
Disturb the structural schematic diagram of the equipment 2000 of simulation.As shown in Fig. 2, equipment 2000 includes the first network interface card 210, the second network interface card 220
And server 230.First network interface card 210 is coupled with a Spine interchangers, and the second network interface card 220 is coupled with a Leaf interchangers, clothes
Business device 230 is configured to be connected to first network interface card 210 and second network interface card 220 so that enters from first network interface card 210
Flow is all transmitted to second network interface card 220, and the stream entered from second network interface card 220 via the server 230
Amount is all transmitted to first network interface card 210 via the server 230, wherein soft by first in the server 230
Part simulation generate abnormal disturbances, and the link between the Leaf interchangers and the Spine interchangers be disconnected so as into
Row disturbance simulation.
In one embodiment, the server 230 is configured to create bridge using virtual switch, wherein described
One network interface card 210 and second network interface card 220 are articulated to the bridge via the first network interface and the second network interface respectively.Implement at one
In example, the server 230 is configured on first network interface or second network interface, using first software come mould
It is quasi- to generate abnormal disturbances.First software can be network harm software（Such as netimpair etc.）Or the work of more bottom
Tool（Such as the tc tools etc. of Linux）.In one embodiment, the server 230 is configured to through first software
While simulation generates abnormal disturbances, the second software is also utilized（Such as DPDK OpenvSwitch）Add to carry out Message processing
Speed.
With reference to figure 3, it is to indicate one embodiment of the present of invention, in the deployment framework for disturb cloud network when simulating
Figure.As shown in figure 3, the 40G links between Leaf-Spine interchangers are linked into first on 40G network interface cards, then by server into
Row transfer connects.Its basic implementation steps：1）With reference to Fig. 3, network connectivity configuration is carried out；2）Create bridge：Using for example
OpenvSwitch software switch creates bridge br0, and network interface card 1, network interface card 2 are articulated on br0, port is formed by and is denoted as net
Mouth 1, network interface 2；3）Configure flow table：Two flow table rules are configured on br0：The flow entered from network interface 1 is all forwarded to network interface
2；The flow entered from network interface 2 is all forwarded to network interface 1, it is thus achieved that the network flow between Leaf-Spine interchangers is saturating
It passes；4）Simulate abnormal disturbances：In network interface 1（Or network interface 2）On, utilize network harm software（Such as netimpair etc.）Or
The tool of more bottom（Such as the tc tools etc. of Linux）Configure various forms of Network Abnormal disturbances（Such as postpones, is general with certain
Rate packet loss, shake etc.）, it is achieved in the abnormal disturbances simulation of the 40G network links between Leaf-Spine interchangers.
In one embodiment, when carrying out the analysis of abnormal disturbances Data Stream Processing, between Leaf-Spine interchangers
Communication flows（Assuming that be the flow from Spine interchangers to Leaf interchangers direction, and abnormal disturbances carry out at network interface 1,
Vice versa）Will go first through network interface card 1, at port 1 after the disturbance treatment of netimpair, be either dropped or by
It is sent to OVS with some form（That is OpenvSwitch）It is defeated to be transferred to network interface 2 later according to the flow table of br0 rule by bridge br0
Go out.It is simulated it is thus achieved that being disturbed from Spine interchangers to the Traffic Anomaly in Leaf interchangers direction.
It should be pointed out that abnormal disturbances simulation can be realized by various combination of software.In one embodiment, pass through
The combination of software of OpenvSwitch, netimpair/tc realize the network message transmission abnormality disturbance on server.This field
Technical staff, which is appreciated that, can be used other software combination to realize similar effect.
In one embodiment, the abnormal disturbances of 40G links are handled using software acceleration scheme.In general, 40G links
The full load conditions of rate request under to(for) Message processing is higher.The processing speed of common Linux network protocol stacks is limited, therefore
Some software Message processing acceleration techniques can be utilized（Such as DPDK OpenvSwitch accelerate）To be accelerated.In this feelings
Under condition, since DPDK has bypassed the network protocol stack of linux kernel, the tools such as netimpair/tc will fail, can directly exist
The processing such as speed limit, packet loss, delay are carried out on the network port of DPDK OpenvSwitch.
In one embodiment, technical scheme of the present invention may be used on various rate links, including but not limited to 25G,
40G, 100G link.In addition, the mode of abnormal disturbances is not limited to mentioned above postpone, with certain probability packet loss, shake
Deng.In one embodiment, the mode of abnormal disturbances also includes the abnormal disturbances of self-defined form, such as by some form of
History playback, abnormal disturbances of user-defined feature etc..
In conclusion the present invention propose it is a kind of using common hardware for the high-speed lattice chain in SDN switching matrixs
Road carries out the scheme of abnormal disturbances simulation.In one embodiment, the program uses general x86 servers and 2 pieces of 40G
Network interface card combination is used as hardware configuration, realizes that the misfortune for 40G network links passes, and by software realization for flowing through server
Network message carry out various forms of abnormal disturbances simulations or transparent transmission.Compared with prior art, disturbance of the invention simulation
Solution principle is concise, versatile, and can effectively realize the abnormal disturbances simulation for network link.In addition, using this
Inventive technique scheme simulates the low 1-2 order of magnitude of the overall costs of the abnormal disturbances network harm instrument more professional than on the market.
The link being directed between Leaf-Spine interchangers that example above primarily illustrates the present invention carries out disturbance simulation
Method and apparatus.Although only the specific implementation mode of some of present invention is described, the common skill in this field
Art personnel it is to be appreciated that the present invention can without departing from its spirit with range in the form of many other implement.Therefore, institute's exhibition
The example shown is considered as illustrative and not restrictive with embodiment, is not departing from as defined in appended claims
In the case of spirit and scope of the present invention, the present invention may cover various modification and replacement.
Claims (10)
1. a kind of method for carrying out disturbance simulation for the link between Leaf-Spine interchangers in network, which is characterized in that
The method includes：
Disconnect the link between Leaf interchangers and Spine interchangers；
By the Spine interchangers and the first network card coupling and by the Leaf interchangers and the second network card coupling；And
First network interface card is connected to via server with second network interface card so that the flow warp entered from first network interface card
Second network interface card is all transmitted to by the server, and the flow entered from second network interface card is via the server
It all is transmitted to first network interface card,
Wherein, it is simulated by the first software in the server and generates abnormal disturbances.
2. the method for claim 1, wherein it is described by first network interface card via server and second network interface card
Connection includes：
Bridge is created using virtual switch in the server；And
First network interface card and second network interface card are articulated to the bridge via the first network interface and the second network interface respectively.
3. method as claimed in claim 2, wherein described simulated by the first software in the server generates abnormal disturb
It is dynamic to include：
On first network interface or second network interface, generation abnormal disturbances are simulated using first software.
4. method as claimed in claim 3, wherein first software is network harm software or bottom tool.
5. the method for claim 1, wherein being simulated by first software in the server and generating abnormal disturb
While dynamic, also Message processing acceleration is carried out using the second software.
6. the equipment that a kind of link for being directed between Leaf-Spine interchangers in a network carries out disturbance simulation, feature
It is, the equipment includes：
First network interface card is coupled with a Spine interchangers；
Second network interface card is coupled with a Leaf interchangers；
Server is configured to be connected to first network interface card and second network interface card so that the flow entered from first network interface card
It is all transmitted to second network interface card via the server, and the flow entered from second network interface card is via the service
Device is all transmitted to first network interface card,
Wherein, in the server by the first software simulate generate abnormal disturbances, and the Leaf interchangers with it is described
Link between Spine interchangers is disconnected to carry out disturbance simulation.
7. equipment as claimed in claim 6, wherein the server is configured to create bridge using virtual switch,
Described in the first network interface card and second network interface card be articulated to the bridge via the first network interface and the second network interface respectively.
8. equipment as claimed in claim 7, wherein the server is configured in first network interface or second network interface
On, simulate generation abnormal disturbances using first software.
9. equipment as claimed in claim 8, wherein first software is network harm software or bottom tool.
10. equipment as claimed in claim 6, wherein it is different that the server is configured with the first software simulation generation
Often while disturbance, also Message processing acceleration is carried out using the second software.
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| CN201711455796.XA CN108306759B (en) | 2017-12-28 | 2017-12-28 | Method and equipment for disturbance simulation of link between Leaf-Spine switches |
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| CN201711455796.XA CN108306759B (en) | 2017-12-28 | 2017-12-28 | Method and equipment for disturbance simulation of link between Leaf-Spine switches |
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| CN108306759B CN108306759B (en) | 2020-12-15 |
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