CN109412978A - A kind of unicast method, virtual switch, SDN controller and storage medium - Google Patents
A kind of unicast method, virtual switch, SDN controller and storage medium Download PDFInfo
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- CN109412978A CN109412978A CN201811206326.4A CN201811206326A CN109412978A CN 109412978 A CN109412978 A CN 109412978A CN 201811206326 A CN201811206326 A CN 201811206326A CN 109412978 A CN109412978 A CN 109412978A
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- unicast
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- virtual switch
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/70—Virtual switches
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/14—Routing performance; Theoretical aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
Abstract
The invention discloses a kind of unicast method, virtual switch, SDN controller and storage medium, unicast method includes: that SDN controller receives the unitcast request that the first virtual switch is sent；Unicast destination virtual machine is obtained according to the unitcast request；Unicast forwarding rule is generated according to the unicast destination virtual machine；The unicast forwarding rule is sent to the second virtual switch, so that second virtual switch sends unicast message to the unicast destination virtual machine.
Description
Technical field
The present invention relates to virtualization network technique field, espespecially a kind of unicast method, virtual switch, SDN controller and
Storage medium.
Background technique
In traditional network environment, when non-technical personnel uses unicast related application, entire net often will cause
The unicast flooding of network environment even results in the paralysis of whole network environment.Traditional solution includes: that host interface uses
Storm-control order controls the unicast of all past outgoings of source host, the agingtime adjustment of MAC and ARP table, converges
Trunk mouthfuls of vlan prunings on interchanger configure on the two all layer interfaces of convergence switch
The methods of switchportblockunicast.
But the existing method complexity for preventing unknown unicast from flooding is high, stability is low, to network hardware condition depended
Property is big, can not effectively take precautions against unknown unicast and flood.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of unicast method, virtual switch, SDN controller and
Storage medium can effectively take precautions against unknown unicast and flood.
In order to reach the object of the invention, in a first aspect, being applied to virtual switch the present invention provides a kind of unicast method
Machine, which comprises
Receive the unitcast request that unicast source virtual machine is sent；
The unitcast request is sent to software defined network SDN controller, so that the SDN controller is in virtualization net
Unicast service is realized in network.
Second aspect, the present invention provides a kind of unicast methods, are applied to SDN controller, which comprises
The unitcast request of the first virtual switch transmission is received, first virtual switch is to connect with unicast source virtual machine
The virtual switch connect；
Unicast destination virtual machine is obtained according to the unitcast request；
Unicast forwarding rule is generated according to the unicast destination virtual machine；
The unicast forwarding rule is sent to the second virtual switch, so that second virtual switch is to the list
It broadcasts target virtual machine and sends unicast message, second virtual switch is the virtual friendship connecting with the unicast destination virtual machine
It changes planes.
Optionally, described that unicast forwarding rule is generated according to unicast destination virtual machine, comprising: based on unicast source virtual machine and
The network topology of unicast destination virtual machine, and unicast forwarding rule is generated according to preset algorithm.
Optionally, the unicast forwarding rule, comprising: OpenFlow flow table.
The third aspect, the present invention provides a kind of virtual switch, the virtual switch includes receiving unit and transmission
Unit, in which:
The receiving unit, for receiving the unitcast request of unicast source virtual machine transmission；
The transmission unit, for the received unitcast request of the receiving unit to be sent to SDN controller, so as to
The SDN controller realizes unicast service in virtualization network.
Fourth aspect, the present invention provides a kind of SDN controller, the SDN controller includes receiving unit, obtains list
Member, generation unit and transmission unit, in which:
The receiving unit, for receiving the unitcast request of the first virtual switch transmission, first virtual switch
For the virtual switch being connect with unicast source virtual machine；
The acquiring unit, it is virtual for obtaining unicast destination according to the received unitcast request of the receiving unit
Machine；
The generation unit, the unicast destination virtual machine for being obtained according to the acquiring unit generate unicast forwarding
Rule；
The transmission unit, the unicast forwarding rule for generating the generation unit are sent to the second virtual friendship
It changes planes, so that second virtual switch sends unicast message, second virtual switch to the unicast destination virtual machine
Machine is the virtual switch connecting with the unicast destination virtual machine.
Optionally, the generation unit is specifically used for: the network based on unicast source virtual machine and unicast destination virtual machine is opened up
It flutters, and generates unicast forwarding rule according to preset algorithm.
Optionally, the unicast forwarding rule, comprising: OpenFlow flow table.
5th aspect, the present invention provides a kind of servers, comprising: one or more processors；Memory, for storing
One or more programs, when one or more of programs are executed by one or more of processors so that it is one or
Multiple processors realize unicast method as described in any one of the above embodiments.
6th aspect, the present invention provides a kind of storage mediums, are stored thereon with computer program, and the program is by processor
Unicast method as described in any one of the above embodiments is realized when execution.
The embodiment of the present invention proposes a kind of unicast method, virtual switch, SDN controller and storage medium, passes through SDN
Controller receives the unitcast request that the first virtual switch is sent；Unicast destination virtual machine is obtained according to the unitcast request；Root
Unicast forwarding rule is generated according to the unicast destination virtual machine；The unicast forwarding rule is sent to the second virtual switch,
So that second virtual switch sends unicast message to the unicast destination virtual machine.In this way, reducing unicast method
Complexity improves stability, can effectively take precautions against unknown unicast and flood.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the flow diagram for the unicast method applied to virtual switch that the embodiment of the present invention one provides；
Fig. 2 is the flow diagram of the unicast method provided by Embodiment 2 of the present invention applied to SDN controller；
Fig. 3 is the flow diagram for the unicast method that the embodiment of the present invention three provides；
Fig. 4 is the structural schematic diagram for the virtual switch that the embodiment of the present invention four provides；
Fig. 5 is the structural schematic diagram for the SDN controller that the embodiment of the present invention five provides；
Fig. 6 is the structural schematic diagram for the server that the embodiment of the present invention six provides.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
The present invention relates to virtualization network design fields, and in particular to a kind of to prevent unknown unicast using software defined network
The implementation method to flood.
In traditional network environment, when non-technical personnel uses unicast related application, entire net often will cause
The unicast flooding of network environment even results in the paralysis of entire corporate network environment.Analysis reason is mainly the UDP packet ratio of this unicast
It is larger, and be to continue high speed to send, cause destination host to ram dead.But UDP packet is because of connectionless concept, unicast source according to
It can so continue to send, due to the MAC Address aging on switches of destination host after a period of time, but ARP also unaged (one
As in the case of MACagingtime < ARPagingtime).After causing this unicast traffic to reach interchanger, ARP table can be passed through
Corresponding MAC Address is found, but corresponding interface is not present in MAC table again, then interchanger default can be by these this unicasts
UDP flow amount goes to flood to the total interface of interchanger, forms unknown unicast and floods.For this problem, traditional solution master
Have following several:
1, host interface uses storm-control order: but this order is merely able to control source host unicast and goes outward
Hair at this time the interchanger where source host and can not differentiate unknown unicast or normal unicast, so all unicasts are all
It can disinthibite, normal flow also will receive influence.
2, trunk mouthfuls of vlan prunings on convergence switch: it can only limit to flood only to influence using this method and possess mesh
Host VLAN access switch, but can all have in the virtualization epoch, on essentially all of access switch all
Vlan information, which can not also use in all environment.
3, the agingtime adjustment of MAC, ARP table: adjustment ARPagingtime is less than or equal to MACagingtime to keep away
Exempt from flooding for unknown unicast, value is set as how many suitable, if other problems can be caused, whether not different hardware vendors
Together, program needs are tested and assessed in specific environment.
4, configure switchportblockunicast on the two all layer interfaces of convergence switch: which is really
It can be prevented from unknown unicast to flood presence, but in certain exploitation test environment be sometimes depositing of needing unknown unicast to flood
, while which is equally limited by different hardware manufacturer, at the same it is specifically used in also will cause certain networks sometimes not just
It often, therefore is not preferable solution yet.
Unknown unicast floods in order to prevent, and the embodiment of the present invention proposes a kind of new unicast method.Currently, cloud computing,
The theories such as virtualization and technology are constantly mature, and cloud computing production environment deployment scale constantly increases, software defined network (SDN,
SoftwareDefineNetwork) as it is a kind of virtualize network implementation, have outstanding network performance, stability,
Flexibility and programmable features.The unicast method that the embodiment of the present invention proposes is based on SDN controller come real in virtualization network
It is existing, it describes in detail below to the embodiment of the present invention.
Embodiment one
Fig. 1 is the flow diagram for the unicast method that the embodiment of the present invention one provides, and this method is applied to and unicast source void
The virtual switch of quasi- machine connection, method the following steps are included:
Step 101: virtual switch receives the unitcast request that unicast source virtual machine is sent；
Step 102: unitcast request is sent to SDN controller by virtual switch, so that SDN controller is in virtualization network
Middle realization unicast service.
In a specific embodiment of the present invention, SDN controller is a kind of control based on OpenFlow agreement in cloud platform
Device, possess entire cloud platform network topology and all virtual machine informations, for preventing unknown unicast from flooding, realize unicast industry
Business.
It should be noted that software defined network (SDN, SoftwareDefineNetwork) is net in a kind of cloud computing
Mainstream technology used by network virtualizes has outstanding network performance, stability, flexibility and programmable features.
You need to add is that OpenFlow has done completely new planning to traditional network, OpenFlow interchanger will be originally complete
The message repeating process controlled by switch/router is converted by OpenFlow interchanger and control server Lai common complete
At to realize the separation of data forwarding and route test.
The unicast method that the embodiment of the present invention proposes, using the SND controller in virtual platform, by using
OpenFlow flow table controls unicast message forwarding, makes control and forward separating, simply, efficiently message can be instructed to forward, will
Control plane and forwarding surface decouple.In this way, not only reduce hardware resource cost, it is thus also avoided that network environment hardware is complicated
Property, hardware is inconsistent etc. leads to the problem of, effectively taking precautions against unknown unicast floods, and avoids going to protect again after going wrong, and is promoted
The security row and stability for virtualizing network, provide safe, quick, stable virtualization network service.
Embodiment two
Fig. 2 is the flow diagram of unicast method provided by Embodiment 2 of the present invention, and this method is applied to SDN controller,
Method the following steps are included:
Step 201:SDN controller receive the first virtual switch send unitcast request, the first virtual switch be with
The virtual switch of unicast source virtual machine connection；
In a specific embodiment of the present invention, SDN controller is a kind of control based on OpenFlow agreement in cloud platform
Device, possess entire cloud platform network topology and all virtual machine informations, be capable of providing the basic networks pipe such as routing, flow control
Reason service, for realizing unicast service in virtualization network.
Step 202:SDN controller obtains unicast destination virtual machine according to unitcast request；
Step 203:SDN controller generates unicast forwarding rule according to unicast destination virtual machine；
Illustratively, step 203 specifically includes: SDN controller is based on unicast source virtual machine and unicast destination virtual machine
Network topology, and unicast forwarding rule is generated according to preset algorithm.
Illustratively, unicast forwarding rule includes OpenFlow flow table.
It should be noted that forwarding of the OpenFlow flow table for unicast message controls.By using OpenFlow flow table
Unicast message forwarding is controlled, makes control and forward separating, simply, efficiently message can be instructed to forward, meets cloud computing basis
Architecture design theory, control plane and forwarding surface decouple, and improve the flexibility of design, not only reduce hardware resource cost, avoid
Hardware is inconsistent to be led to the problem of, can be with rapid deployment, change and upgrading, and provides safe, quick, stable virtualization
Network service.
In practical application, SDN controller can control OpenFlow interchanger by the interface operation provided in advance
In flow table, thus achieve the purpose that control data forwarding.
Unicast forwarding rule is sent to the second virtual switch by step 204:SDN controller, so as to the second virtual switch
Machine sends unicast message to unicast destination virtual machine, and the second virtual switch is the virtual switch connecting with unicast destination virtual machine
Machine.
It is understood that the second virtual switch is the virtual switch where unicast destination virtual machine.Second is virtual
Interchanger sends unicast message to unicast destination virtual machine, so that the available unicast message of target virtual machine, realizes virtual net
Unicast service in network environment.
It should be noted that the forwarding control of unicast message is controlled by SDN controller, virtual switch only needs
According to unicast forwarding rule, such as be forwarded according to OpenFlow flow table, UDP message will not be flooded to interchanger its
His port.
Furthermore it is also possible to ram exception of waiting indefinitely when there is virtual machine by the UDP flow amount situation of monitoring virtual machine Microsoft Loopback Adapter
When situation, system manager or setting virtual machine can be notified the strategies such as to restart, migrates and restoring, to improve and be entirely
The safety of system, stability.So, by designing reasonable virtual machine traffic monitoring and virtual machine abnormality processing strategy,
The unicast services of high efficient and reliable are provided, the performance and stability of virtualization network service are improved.
In conclusion unicast method provided in an embodiment of the present invention is special based on virtualization network compared with traditional approach
The control and forward separating theory that point and OpenFlow agreement propose, is directly sent unitcast request by virtual switch
To SDN controller, so that SDN controller generates unicast flow table, and using OpenFlow flow table control message forwarding, unicast is realized
Function.In this way, unicast feature is realized by SDN mode, so that the unitcast request message that message is issued from virtual machine is directly by SDN
Controller interception, i.e., message will not flood into network again, to ensure that safe, quick, stable network service；It mentions
The high stability of virtualization network function；Effectively reduce the expense of unicast routing protocol；Avoid different physical equipment factories
The inconsistency of quotient.
Embodiment three
Fig. 3 is the flow diagram for the unicast method that the embodiment of the present invention three provides.As shown in figure 3, unicast method can be with
The following steps are included:
Step 301: unicast source virtual machine generates unitcast request according to the unicast service of carrying；
Step 302: unitcast request is sent to the first virtual switch by unicast source virtual machine；
Step 303: unitcast request is sent to SDN controller by the first virtual switch；
In a specific embodiment of the present invention, SDN controller is a kind of control based on OpenFlow agreement in cloud platform
Device, possess entire cloud platform network topology and all virtual machine informations, for virtualization network in realize unicast service.
It should be noted that software defined network (SDN, SoftwareDefineNetwork) is net in a kind of cloud computing
Mainstream technology used by network virtualizes has outstanding network performance, stability, flexibility and programmable features.
Step 304:SDN controller obtains unicast destination virtual machine according to unitcast request；
Network topology of the step 305:SDN controller based on unicast source virtual machine and unicast destination virtual machine, and according to pre-
Imputation method generates OpenFlow flow table；
It should be noted that forwarding of the OpenFlow flow table for unicast message controls, while virtual machine traffic monitoring is done,
Abnormality processing strategy is set in abnormal cases.By designing reasonable OpenFlow flow table, the list of high efficient and reliable can be realized
Service is broadcast, and then promotes the performance and stability of virtualization network service.
OpenFlow flow table is sent to the second virtual switch by step 306:SDN controller；
Wherein, the second virtual switch is the virtual switch where unicast destination virtual machine corresponding with OpenFlow flow table
Machine.
Step 307: the second virtual switch sends unicast message to unicast destination virtual machine；
Step 308: unicast destination virtual machine obtains unicast message, realizes the unicast service in virtual network environment.
It should be noted that setting virtual machine traffic monitoring, monitoring objective virtual machine Microsoft Loopback Adapter UDP net can also be passed through
Network flow.Virtual machine traffic abnormality processing strategy is set, when Microsoft Loopback Adapter UDP network flow exceeds given threshold, according to plan
Abnormality processing slightly is carried out to virtual machine, to restore unicast service.
In practical applications, by using OpenFlow flow table control unicast message forwarding, make control and forward separating, it can
With it is simple, efficiently message is instructed to forward, meet cloud computing architecture design concept, control plane and forwarding surface are decoupled, improved
The flexibility of design, not only reduces hardware resource cost, avoids the problem that the inconsistent generation of hardware, can with rapid deployment,
Change and upgrading, and provide safe, quick, stable virtualization network service.
Example IV
Fig. 4 is the structural schematic diagram for the virtual switch that the embodiment of the present invention four provides, as shown in figure 4, virtual switch
Including receiving unit 401 and transmission unit 402, in which:
Receiving unit 401, for receiving the unitcast request of unicast source virtual machine transmission；
Transmission unit 402, for the received unitcast request of receiving unit 401 to be sent to SDN controller, so as to SDN control
Device processed realizes unicast service in virtualization network.
In a specific embodiment of the present invention, SDN controller is a kind of control based on OpenFlow agreement in cloud platform
Device, possess entire cloud platform network topology and all virtual machine informations, for virtualization network in realize unicast service.
It should be noted that software defined network (SDN, Software Define Network) is in a kind of cloud computing
Mainstream technology used by network virtualization has outstanding network performance, stability, flexibility and programmable features.
That is, OpenFlow has done completely new planning to traditional network, OpenFlow interchanger will be originally completely by handing over
Change planes/router control message repeating process, be converted by OpenFlow interchanger and control server and complete jointly, from
And realize the separation of data forwarding and route test.
The virtual switch that the embodiment of the present invention proposes, using the SND controller in virtual platform, by using
OpenFlow flow table controls unicast message forwarding, makes control and forward separating, simply, efficiently message can be instructed to forward, will
Control plane and forwarding surface decouple.In this way, not only reduce hardware resource cost, it is thus also avoided that network environment hardware is complicated
Property, hardware is inconsistent etc. leads to the problem of, effectively taking precautions against unknown unicast floods, and avoids going to protect again after going wrong, and is promoted
The security row and stability for virtualizing network, provide safe, quick, stable virtualization network service.
Embodiment five
Fig. 5 is the structural schematic diagram for the SDN controller that the embodiment of the present invention five provides, as shown in figure 5, SDN controller packet
Include receiving unit 501, acquiring unit 502, generation unit 503 and transmission unit 504, in which:
Receiving unit 501, for receiving the unitcast request of the first virtual switch transmission, the first virtual switch is and list
Broadcast the virtual switch of source virtual machine connection；
Acquiring unit 502, for obtaining unicast destination virtual machine according to the received unitcast request of receiving unit 501,
Generation unit 503, the unicast destination virtual machine for being obtained according to acquiring unit 502 generate unicast forwarding rule；
Transmission unit 504, the unicast forwarding rule for generating generation unit 503 are sent to the second virtual switch,
So that the second virtual switch sends unicast message to unicast destination virtual machine, the second virtual switch is virtual with unicast destination
The virtual switch of machine connection.
Illustratively, generation unit 503 is specifically used for: the network based on unicast source virtual machine and unicast destination virtual machine is opened up
It flutters, and generates unicast forwarding rule according to preset algorithm.
Illustratively, unicast forwarding rule, comprising: OpenFlow flow table.
It should be noted that forwarding of the OpenFlow flow table for unicast message controls.It is reasonable by designing
OpenFlow flow table can be realized the unicast services of high efficient and reliable, and then promote the performance and stability of virtualization network service.
In practical application, SDN controller can control OpenFlow interchanger by the interface operation provided in advance
In flow table, thus achieve the purpose that control data forwarding.
In conclusion SDN controller provided in an embodiment of the present invention is special based on virtualization network compared with traditional approach
The control and forward separating theory that point and OpenFlow agreement propose, is directly sent unitcast request by virtual switch
To SDN controller, so that SDN controller generates unicast flow table, and using OpenFlow flow table control message forwarding, unicast is realized
Function.In this way, unicast feature is realized by SDN mode, so that the unitcast request message that message is issued from virtual machine is directly by SDN
Controller interception, i.e., message will not flood into network again, to ensure that safe, quick, stable network service；It mentions
The high stability of virtualization network function；Effectively reduce the expense of unicast routing protocol；Avoid different physical equipment factories
The inconsistency of quotient.
Embodiment six
Fig. 6 is the structural schematic diagram for the server that the embodiment of the present invention six provides.Fig. 6, which is shown, to be suitable for being used to realizing this hair
The block diagram of the exemplary servers of bright embodiment.The server 12 that Fig. 6 is shown is only an example, should not be to of the invention real
The function and use scope for applying example bring any restrictions.
The server includes: one or more processors；Memory, for storing one or more programs, when one or
Multiple programs are executed by one or more processors, so that one or more processors are realized such as the list in above-mentioned any embodiment
Broadcasting method.
As shown in fig. 6, server 12 is showed in the form of universal computing device.The component of server 12 may include but not
Be limited to: one or more processor or processing unit 16, system storage 28 connect different system components (including system
Memory 28 and processing unit 16) bus 18.
Bus 18 indicates one of a few class bus structures or a variety of, including memory bus or Memory Controller,
Peripheral bus, graphics acceleration port, processor or the local bus using any bus structures in a variety of bus structures.It lifts
For example, these architectures include but is not limited to industry standard architecture (ISA) bus, microchannel architecture (MAC)
Bus, enhanced isa bus, Video Electronics Standards Association (VESA) local bus and peripheral component interconnection (PCI) bus.
Server 12 typically comprises a variety of computer system readable media.These media can be and any can be serviced
The usable medium that device 12 accesses, including volatile and non-volatile media, moveable and immovable medium.
System storage 28 may include the computer system readable media of form of volatile memory, such as arbitrary access
Memory (RAM) 30 and/or cache memory 32.Server 12 may further include other removable/nonremovable
, volatile/non-volatile computer system storage medium.Only as an example, storage system 34 can be used for reading and writing not removable
Dynamic, non-volatile magnetic media (Fig. 6 do not show, commonly referred to as " hard disk drive ").Although being not shown in Fig. 6, can provide
Disc driver for being read and write to removable non-volatile magnetic disk (such as " floppy disk "), and to removable anonvolatile optical disk
The CD drive of (such as CD-ROM, DVD-ROM or other optical mediums) read-write.In these cases, each driver can
To be connected by one or more data media interfaces with bus 18.Memory 28 may include at least one program product,
The program product has one group of (for example, at least one) program module, these program modules are configured to perform each implementation of the invention
The function of example.
Program/utility 40 with one group of (at least one) program module 42 can store in such as memory 28
In, such program module 42 include but is not limited to operating system, one or more application program, other program modules and
It may include the realization of network environment in program data, each of these examples or certain combination.Program module 42 is usual
Execute the function and/or method in embodiment described in the invention.
Server 12 can also be logical with one or more external equipments 14 (such as keyboard, sensing equipment, display 24 etc.)
Letter, can also be enabled a user to one or more equipment interact with the server 12 communicate, and/or with make the server
The 12 any equipment (such as network interface card, modem etc.) that can be communicated with one or more of the other calculating equipment communicate.
This communication can be carried out by input/output (I/O) interface 22.Also, server 12 can also pass through network adapter 20
With one or more network (such as local area network (LAN), wide area network (WAN) and/or public network, such as internet) communication.
As shown, network adapter 20 is communicated by bus 18 with other modules of server 12.It should be understood that although not showing in figure
Out, can in conjunction with server 12 use other hardware and/or software module, including but not limited to: microcode, device driver,
Redundant processing unit, external disk drive array, RAID system, tape drive and data backup storage system etc..
Processing unit 16 by the program that is stored in system storage 28 of operation, thereby executing various function application and
Data processing, such as realize unicast method provided by the embodiment of the present invention.
Embodiment seven
The embodiment of the present invention six provides a kind of computer storage medium.It is stored thereon with computer program, the program quilt
It realizes when processor executes such as the unicast method in above-mentioned any embodiment.
The computer readable storage medium of the embodiment of the present invention, can be using one or more computer-readable media
Any combination.Computer-readable medium can be computer-readable signal media or computer readable storage medium.Computer
Readable storage medium storing program for executing for example may be-but not limited to-the system of electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor, dress
It sets or device, or any above combination.The more specific example (non exhaustive list) of computer readable storage medium wraps
It includes: there is the electrical connection of one or more conducting wires, portable computer diskette, hard disk, random access memory (RAM), read-only
Memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disc read-only memory
(CD-ROM), light storage device, magnetic memory device or above-mentioned any appropriate combination.In this document, computer-readable
Storage medium can be it is any include or storage program tangible medium, the program can be commanded execution system, device or
Device use or in connection.
Computer-readable signal media may include in a base band or as carrier wave a part propagate data-signal,
Wherein carry computer-readable program code.The data-signal of this propagation can take various forms, including but unlimited
In electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can also be that computer can
Any computer-readable medium other than storage medium is read, which can send, propagates or transmit and be used for
By the use of instruction execution system, device or device or program in connection.
The program code for including on computer-readable medium can transmit with any suitable medium, including --- but it is unlimited
In wireless, electric wire, optical cable, RF etc. or above-mentioned any appropriate combination.
The computer for executing operation of the present invention can be write with one or more programming languages or combinations thereof
Program code, programming language include object oriented program language-such as Java, Smalltalk, C++, are also wrapped
Include conventional procedural programming language-such as " C " language or similar programming language.Program code can be complete
Ground executes on the user computer, partly executes on the user computer, executing as an independent software package, partially existing
Part executes on the remote computer or executes on a remote computer or server completely on subscriber computer.It is being related to
In the situation of remote computer, remote computer can pass through the network of any kind --- including local area network (LAN) or wide area
Net (WAN)-be connected to subscriber computer, or, it may be connected to outer computer (such as utilize ISP
To be connected by internet).
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method or computer program product.
Therefore, the form of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention.And
And it wherein includes the computer-usable storage medium of computer usable program code that the present invention, which can be used in one or more,
The form for the computer program product implemented on (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
Claims (10)
1. a kind of unicast method, which is characterized in that the method is applied to virtual switch, which comprises
Receive the unitcast request that unicast source virtual machine is sent；
The unitcast request is sent to software defined network SDN controller, so that the SDN controller is in virtualization network
Realize unicast service.
2. a kind of unicast method, which is characterized in that the method is applied to SDN controller, which comprises
The unitcast request of the first virtual switch transmission is received, first virtual switch is to connect with unicast source virtual machine
Virtual switch；
Unicast destination virtual machine is obtained according to the unitcast request；
Unicast forwarding rule is generated according to the unicast destination virtual machine；
The unicast forwarding rule is sent to the second virtual switch, so that second virtual switch is to the unicast mesh
It marks virtual machine and sends unicast message, second virtual switch is the virtual switch connecting with the unicast destination virtual machine
Machine.
3. according to the method described in claim 2, it is characterized in that, described generate unicast forwarding rule according to unicast destination virtual machine
Then, comprising:
Network topology based on unicast source virtual machine and unicast destination virtual machine, and unicast forwarding rule are generated according to preset algorithm
Then.
4. according to the method described in claim 2, it is characterized in that, the unicast forwarding is regular, comprising:
OpenFlow flow table.
5. a kind of virtual switch, which is characterized in that the virtual switch includes receiving unit and transmission unit, in which:
The receiving unit, for receiving the unitcast request of unicast source virtual machine transmission；
The transmission unit, for the received unitcast request of the receiving unit to be sent to SDN controller, so as to described
SDN controller realizes unicast service in virtualization network.
6. a kind of SDN controller, which is characterized in that the SDN controller include receiving unit, acquiring unit, generation unit and
Transmission unit, in which:
The receiving unit, for receive the first virtual switch transmission unitcast request, first virtual switch be with
The virtual switch of unicast source virtual machine connection；
The acquiring unit, for obtaining unicast destination virtual machine according to the received unitcast request of the receiving unit；
The generation unit, the unicast destination virtual machine for being obtained according to the acquiring unit generate unicast forwarding rule
Then；
The transmission unit, the unicast forwarding rule for generating the generation unit are sent to the second virtual switch
Machine, so that second virtual switch sends unicast message, second virtual switch to the unicast destination virtual machine
For the virtual switch being connect with the unicast destination virtual machine.
7. SDN controller according to claim 6, which is characterized in that the generation unit is specifically used for:
Network topology based on unicast source virtual machine and unicast destination virtual machine, and unicast forwarding rule are generated according to preset algorithm
Then.
8. SDN controller according to claim 6, which is characterized in that the unicast forwarding rule, comprising:
OpenFlow flow table.
9. a kind of server characterized by comprising
One or more processors；
Memory, for storing one or more programs,
When one or more of programs are executed by one or more of processors, so that one or more of processors are real
Now unicast method according to any one of claims 1 to 4.
10. a kind of storage medium, is stored thereon with computer program, which is characterized in that the realization when program is executed by processor
Unicast method according to any one of claims 1 to 4.
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