CN108111324A - A kind of multicast control method based on SDN network, device and storage medium - Google Patents
A kind of multicast control method based on SDN network, device and storage medium Download PDFInfo
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- CN108111324A CN108111324A CN201711370958.XA CN201711370958A CN108111324A CN 108111324 A CN108111324 A CN 108111324A CN 201711370958 A CN201711370958 A CN 201711370958A CN 108111324 A CN108111324 A CN 108111324A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
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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
- H04L45/16—Multipoint routing
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Abstract
The invention discloses a kind of multicast control method based on SDN network, applied to SDN network, the described method includes：Obtain the position attaching information of destination host；Judge destination host whether in multicast group according to the position attaching information of the destination host；If so, obtain the multicast protocol version that the destination host in the multicast group is disposed；Multicast control plane interaction mechanism is performed to the destination host according to the multicast protocol version disposed on the destination host.The invention also discloses a kind of multicast control device and storage medium based on SDN network, by implementing the above-mentioned multicast control method based on SDN network, device and storage medium, can cause multicast more efficiently, safety, it is more convenient to the management of multicast.
Description
Technical field
The present invention relates to a kind of communications field more particularly to multicast control method based on SDN network, device and storages to be situated between
Matter.
Background technology
SDN (Software Defined Network, software defined network) is a kind of new network of Emulex network innovation framework, wherein
A kind of core technology is OpenFlow technologies, and the technology is by the way that network equipment control plane is separated with forwarding surface, so as to real
The flexible control of network traffics is showed, good technical conditions is provided for the innovation of network application.
OpenFlow is a kind of New Network Technique, which realizes user or program to network processes behavior by flow table
Control.OpenFlow realizes the separation of data forwarding and control.Wherein OpenFlow interchangers realize the forwarding of data,
SDN controllers realize the function of control.Controller (exchanges SDN forwarding units by OpenFlow agreements including OpenFlow
SDN forwarding units including machine) it is controlled, carry out centralized Control so as to fulfill to whole network.
There are a kind of special transmission modes, i.e. multicast (Multicast) in current network activity：In sender and
Single point-to-point configuration connection is realized between each recipient.If a sender is identical to multiple recipient's transmission simultaneously
Data, need to only replicate a identical data packet in intermediate transmission node.By multicast, data transmission effect can be improved
Rate reduces the probability of backbone network congestion, also reduces the pressure that sender sends message.But in current multicast, by
Different multicast protocols is supported in different hosts, so that the foundation of multicast control is needed according to router and multicast reception
The agreement that person all supports, often compared with the agreement of lowest version；Meanwhile some need or are allowed to receive the master of multicast services
Machine can not add in multicast group and receive multicast information in the case where not supporting multicast protocol, no addition multicast group；In addition, mesh
The plus-minus group that preceding multicast also can not be directed to multicast carries out unified management, while also all multicast paths can not be supervised
Control, while can not also realize the multicast transmission of across a network (such as overstating wide area network).
The content of the invention
In view of this, the object of the present invention is to provide a kind of multicast control method based on SDN network, device and storages to be situated between
Matter, so can intuitively, control is efficiently monitored to multicast.
A kind of multicast control method based on SDN network provided in embodiment of the present invention, applied to SDN network, institute
The method of stating includes：Obtain the attaching information of destination host；Whether destination host is judged according to the attaching information of the destination host
In multicast group；If so, obtain the multicast protocol version that the destination host in the multicast group is disposed；According to described
The multicast protocol version disposed on destination host performs multicast control plane interaction mechanism to the destination host.
Optionally, the method further includes：If the destination host not in the multicast group, judges the target master
Whether machine supports multicast；If it is not, the Multicast Routing of the multicast group is then established using the destination host as multicast member, with
It replicates on multicast message to the SDN forwarding units for connecting the destination host of the multicast group, and the SDN forwardings is controlled to set
The unicast address of the standby destination host that the destination address of the multicast message is revised as to the SDN forwarding units connection with
Obtain unicast message；The unicast message is sent to the port of the destination host connection.
Optionally, the method further includes：If the destination host is not in the multicast group, and the destination host branch
Multicast is held, then the Multicast Routing of the multicast group is established using the destination host as multicast member, with described in control connection
The multicast message of the multicast group is transferred to the port for connecting the destination host by the SDN forwarding units of destination host.
Optionally, the method further includes：The multicast source and described is judged according to the attaching information of the destination host
Whether destination host is in same network；If the multicast source and the destination host be not in same network, by institute
The multicast message of multicast group where destination host is stated in multicast source belonging network and is led between the network of the destination host
Interface carries out the processing of preset strategy；By treated, the multicast message is sent to the mesh by the Inter-Network Interface
Mark the network where host；Control connects the SDN forwarding units of the destination host to reception treated the multicast report
Text carries out the reverse process of the preset strategy；Multicast message after the reverse process is sent to the destination host.
Optionally, the preset strategy include the multicast message being converted into unicast message, will be in the multicast message
It is inserted into label, the multicast message is subjected to tunnel encapsulation.
Optionally, the method further includes：When the destination host is present in the multicast group；Monitor the target master
Machine in a group state；The destination host is shown by visualization interface on user's output equipment in group state.
Optionally, the method further includes：When the destination host is present in the multicast group；Monitor the multicast source
Multicast path between the destination host；By the multicast path by visualization interface described in user's output equipment
Upper display.
Optionally, the method further includes：Monitor the loading condition in the relay path；According to the negative of the relay path
Load situation selects optimal multicast path.
A kind of multicast control device based on SDN network provided in embodiment of the present invention, applied to SDN controllers,
The multicast apparatus based on SDN network includes memory, processor and is stored on the memory and can be in the processing
The multicast program based on SDN network run on device, it is described real when being performed based on the multicast program of SDN network by the processor
The existing above-mentioned multicast rate-determining steps based on SDN network.
A kind of storage medium provided in embodiment of the present invention, the storage medium are stored with one or more programs,
One or more of programs can be executed by one or more processors, to realize that the above-mentioned multicast based on SDN network controls
Step.
By implementing the above-mentioned multicast control method based on SDN network, device and storage medium, can cause in SDN nets
In the environment of network so that more efficient, the safety of multicast, and meanwhile it is more convenient to the management of multicast.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Description of the drawings
Fig. 1 is a kind of applied environment figure of 10 1 embodiment of multicast control device based on SDN network of the present invention.
Fig. 2 is a kind of flow chart of the multicast control method first embodiment based on SDN network of the present invention.
Fig. 3 is a kind of flow chart of the multicast control method second embodiment based on SDN network of the present invention.
Fig. 4 is a kind of flow chart of the 3rd embodiment of multicast control method based on SDN network of the present invention.
Fig. 5 is a kind of flow chart of the 4th embodiment of multicast control method based on SDN network of the present invention.
Fig. 6 is a kind of module map of 10 1 embodiment of multicast control device based on SDN network of the present invention.
Main element symbol description
Multicast apparatus 10 based on SDN network
SDN controllers 1
Host 2
SDN forwarding units 3
Edge SDN forwarding units 4
Memory 100
Processor 102
Following specific embodiment will be further illustrated the present invention with reference to above-mentioned attached drawing.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to the scope of protection of the invention.
Fig. 1 is a kind of applied environment figure of one embodiment of multicast apparatus based on SDN network of the present invention.Wherein SDN is controlled
Device 1 processed connects multiple regions network, can directly connect and can also be connected by Wide Area Network between the Local Area Network, such as
Local Area Network a, Local Area Network b, Local Area Network c, Local Area Network d in figure, wherein Local Area Network a, Local Area Network b, regional network
Network c is the SDN network that can directly connect, and Local Area Network d is the SDN network connected by Wide Area Network.The SDN network
SDN forwarding units 3 including at least one host 2 and the connection host 2, the Wide Area Network of the connection pass through one
Edge SDN forwarding units 4 in SDN network are connected with SDN network.For it is above-mentioned no matter SDN forwarding units 3 or edge SDN
Forwarding unit 4 is all connected with SDN controllers 1, that is, realizes SDN controllers 1 and all SDN forwarding units 3 and edge SDN forwardings are set
Standby 4 centralized Control.Wherein, once the host 2 that the SDN network that SDN controllers 1 control is connected has multicast requirement (bag
Include multicast and send request or multicast reception request), then the flexible control of multicast can be realized according to scheme disclosed in the present application.
Fig. 2 is a kind of flow chart of the multicast control method first embodiment based on SDN network of the present invention, is applied to
SDN network.Pass through and implement the multicast control method based on SDN network so that the control of network multicast more flexibly, safety and height
Effect.
In step S200, the attaching information of destination host is obtained.In the present embodiment, group is included in the SDN network
The multicast source, many destination hosts and the SDN controllers 1 to the control of entire SDN network of activity are broadcast, the SDN controllers 1 can
To obtain the attaching information of destination host, wherein the attaching information can be the physically section of each destination host in a network
Point position can also include each destination host the position in some logical groups, such as multicast group.
In step S202, judge the destination host whether in multicast group according to the attaching information of the destination host.
In the present embodiment, SDN network includes SDN controllers 1, and multicast group can be delimited by SDN controllers 1, and the target
Host (host 2 in such as Fig. 1) can directly or indirectly through SDN forwarding units 3 (such as SDN switch) with SDN controllers 1 into
Row information interacts, in this way, SDN controllers 1 can be obtained the attaching information of destination host and be sentenced by the form of Signalling exchange
Disconnected destination host is with the presence or absence of in the multicast group delimited.
In step S204, if destination host in multicast group, obtains the portion of the destination host institute in the multicast group
The multicast protocol version of administration.In the present embodiment, the multicast protocol version includes IGMP V1, IGMP V2, IGMP V3,
Wherein IGMP is Internet Group Management Protocol, i.e. Internet igmpinternets.And obtain target
The multicast protocol version disposed on host can then analyze the multicast control plane of its destination host received by SDN controllers 1
The mode of information judges the multicast protocol version of the host deployments.
In step S206, according to the multicast protocol version disposed on the destination host to the destination host execution group
Broadcast control plane interaction mechanism.In the present embodiment, due to the difference of multicast protocol version, the multicast control to respective objects host
Face interaction processed is also not quite similar, you can be directed to the control for its corresponding multicast protocol of destination host execution for disposing different multicast protocols
Face interaction mechanism processed.
Specifically, IGMP V1, which define host 2, may only add in multicast group, but the letter of multicast group is left without definition
Breath.IGMP V1 are based primarily upon inquiry and response mechanism to complete the management to multicast member, when the host 2 of operation IGMP V1
When leaving certain multicast group, report message will not be sent to the multicast group that it to be left, so the IGMP network equipments send inquiry
When message (Query Message), the report message of the multicast group host 2 will be can not receive is sent to, then IGMP networks
Equipment just deletes the multicast forwarding item corresponding to the multicast group over time；IGMP V2 are increased on the basis of IGMP V1
Host 2 leaves the information of member's group, allows to report that group membership leaves situation to multicast equipment rapidly.And in IGMP V1, it is main
Machine quietly leaves multicast group, will not send any notice to any multicast equipment, and multicast equipment is caused multicast group can only to be relied on to ring
Time-out is answered to determine leaving for multicast member.And in IGMP V2, when a host decision is left, if it is to one
The host that Membership Query Message responds, then it will send the message for leaving group, and (destination address is
224.0.0.2)；IGMP V3 further enhance the control energy of host on the basis of compatible and succession IGMPv1 and IGMPv2
Power, and enhance the function of inquiry and report message.The enhancing of its host computer control ability is that IGMPv3 is added for multicast
The filtered model (INCLUDE/EXCLUDE) in source makes host while certain multicast group G is added in, can be distinctly claimed reception or
Refuse the multicast information from certain specific multicast source S.It is inquired about and report message function also enhances accordingly, carries source address
Query message includes the report message of multigroup record.
And multicast control plane is performed to the destination host according to the multicast protocol version disposed on the destination host
The step of interaction mechanism, specifically may refer to following table one：
In above-mentioned steps, by the various parameters shown in above table, multicast control plane is performed to the destination host
Interaction mechanism.It should be noted that " virtual multicast " described in table one refer to host in the case where not supporting multicast protocol or
Person supports multicast protocol but the situation of multicast services can also be received in the case of not being added to corresponding multicast group.
Fig. 3 is a kind of flow chart of the multicast control method second embodiment based on SDN network of the present invention.It is based on figure
The multicast control method based on SDN network is further discussed below shown in 2.
In step S300, if the destination host judges whether the destination host is supported not in the multicast group
Multicast.
In step S302, if the destination host does not support multicast, by SDN controllers 1 using the destination host as
Multicast member establishes the Multicast Routing of the multicast group, to replicate the multicast message of the multicast group to connecting the target master
On the SDN forwarding units 3 of machine.
In step S304, control the SDN forwarding units 3 that the destination address of the multicast message is revised as the SDN
The unicast address for the destination host that forwarding unit 3 connects is to obtain unicast message.
In step S306, the unicast message is sent to the port of the destination host connection.
By the multicast control method based on SDN network described in implementing Fig. 3, it can not support multicast in host 2 and not add
The multicast message of the multicast group is received in the case of entering multicast group, and then realizes multicast.
Fig. 4 is a kind of flow chart of the 3rd embodiment of multicast control method based on SDN network of the present invention.It is based on figure
The multicast control method based on SDN network is further discussed below shown in 3.
In step S400, if the destination host, not in the multicast group, and the destination host supports multicast, then will
The destination host establishes the Multicast Routing of the multicast group as multicast member.
In step S402, control the SDN forwarding units 3 for connecting the destination host that the multicast message of the multicast group is defeated
Go out to the port for connecting the destination host.In the present embodiment, the multicast message of the multicast group is output to connection institute
It states the direct output that the output action in the port of destination host can be message or changes destination address laggard
Row output, such as it is revised as multicast address, the current host unicast address of destination host place multicast group, naturally it is also possible to do not change
Directly export.
By implementing the multicast control method based on SDN network described in Fig. 4, it can support multicast in host 2 and not add in
Multicast group can be added in the case of multicast group, and then realizes multicast.
In addition, in other embodiments, for the multicast control method based on SDN network described in above-mentioned Fig. 3, Fig. 4,
Before step S300 and step S400, further the destination host can also be authenticated, to judge the target
Whether host is authorized to join multicast group or carries out multicast, and then provides a kind of safe guarantee for the operation of entire multicast.
Fig. 5 is a kind of flow chart of the 4th embodiment of multicast control method based on SDN network of the present invention.It is based on figure
The multicast control method based on SDN network is further discussed below shown in 2.
In step S500, judge whether are the multicast source and the destination host according to the attaching information of the destination host
In same network.In the present embodiment, same LAN is can be understood as in the same network, without same
One network can be understood as between across a wide area network two heterogeneous networks.
In step S502, if the multicast source and the destination host not in same network, by the target master
The multicast message of multicast group (is schemed in multicast source belonging network with leading to the Inter-Network Interface of the destination host where machine
The edge SDN forwarding units 4 in 1) at carry out preset strategy processing.
In the present embodiment, the processing of the preset strategy refer to by the multicast message be converted to unicast message,
Label will be inserted into the multicast message, the multicast message is carried out to tunnel encapsulation or the mode of other equivalents.Tool
For body, i.e. address conversion NAT, tunnel processing (IPSEC, QinQ, VXLAN etc.), multicast become unicast.
In step S504, by treated, the multicast message is sent to the destination host by the Inter-Network Interface
The network at place.
In step S506, control connects the SDN forwarding units 3 of the destination host to reception treated the multicast
Message carries out the reverse process of the preset strategy.
In step S508, the multicast message after the reverse process is sent to the destination host.
By implementing a kind of multicast control method based on SDN network described in Fig. 5, it can so that across a network is (such as wide
Domain net) multicast delivery, further enrich the application scenarios of multicast.
In the embodiment of above-mentioned many method of multicasting based on SDN network, when the destination host be present in it is described
In multicast group, the group between group state and the multicast source and the destination host of the destination host can also be monitored
Broadcast path；And by the destination host group state and it is described relay path by visualization interface in user's output equipment
Upper display.In addition, in based on the above-mentioned multicast control method based on SDN network, the negative of the monitoring relay path is further included
Load situation；And optimal multicast path is selected according to the loading condition in the relay path, and in the user input equipment
Emphasis mark is carried out to optimal multicast path on visualization interface.In this way, the above-mentioned multicast control method based on SDN network can
So that user very intuitively can be controlled and be understood to entire multicast.Few examples may refer to following table two.
Fig. 6 is a kind of structure diagram of the multicast control device 10 based on SDN network of the present invention.It is described to be based on SDN nets
The multicast control device 10 of network can be realized by performing the above-mentioned multicast control method based on SDN network so that network multicast
Control more flexibly, safety and efficiently.Multicast apparatus 10 wherein based on SDN network is applied to SDN network, and including storage
Device 100, processor 102 and be stored on the memory 100 and can be run on the processor 102 based on SDN network
Multicast control program, the multicast control program based on SDN network realized such as Fig. 2 institutes when being performed by the processor 102
Show step：
Obtain the attaching information of destination host.In the present embodiment, the multicast of multicast activity is included in the SDN network
Source, many destination hosts and the SDN controllers 1 to the control of entire SDN network, the SDN controllers 1 can obtain target master
The attaching information of machine wherein the attaching information can be the physically node location of each destination host in a network, also may be used
To include position of each destination host in some logical groups, such as multicast group.
Judge destination host whether in multicast group according to the attaching information of the destination host.In the present embodiment,
SDN network includes SDN controllers 1, and multicast group can be delimited by SDN controllers 1, and the destination host (master in such as Fig. 1
Machine 2) SDN controllers 1 can be connected to directly or indirectly through SDN forwarding units 3 (such as SDN switch), in this way, SDN is controlled
Device 1 can judge destination host with the presence or absence of in the multicast group delimited by inquiring the form of signaling.
If destination host in multicast group, obtains the multicast protocol that the destination host in the multicast group is disposed
Version.In the present embodiment, the multicast protocol version is including IGMP V1, IGMP V2, IGMP V3, wherein IGMP
Internet Group Management Protocol, i.e. Internet igmpinternets.And it obtains and is disposed on destination host
Multicast protocol version then can judge this by way of the multicast control plane information for the destination host that SDN controllers 1 receive
The multicast protocol version of host deployments.
Multicast control plane is performed according to the multicast protocol version disposed on the destination host to the destination host to hand over
Mutual mechanism.In the present embodiment, due to the difference of multicast protocol version, the multicast control plane of respective objects host is interacted
It is not quite similar, you can machine is interacted with the control plane for being directed to its corresponding multicast protocol of destination host execution for disposing different multicast protocols
System.
Specifically, IGMP V1, which define host 2, may only add in multicast group, but the letter of multicast group is left without definition
Breath.IGMP V1 are based primarily upon inquiry and response mechanism to complete the management to multicast member, when the host 2 of operation IGMP V1
When leaving certain multicast group, report message will not be sent to the multicast group that it to be left, so IGMP routers send inquiry report
When literary (Query Message), the report message of the multicast group host 2 will be can not receive is sent to, then IGMP routers
The multicast forwarding item corresponding to the multicast group is just deleted over time；IGMP V2 are to add master on the basis of IGMP V1
Machine 2 leaves the information of member's group, allows to report that group membership leaves situation to multicast router rapidly.And in IGMP V1, host
Multicast group is quietly left, any notice will not be sent to any multicast router, cause multicast router that can only rely on multicast group
Response timeout determines leaving for multicast member.And in IGMP V2, when a host decision is left, if it is to one
The host that Membership Query Message responds, then it will send the message for leaving group, and (destination address is
224.0.0.2)；IGMP V3 further enhance the control energy of host on the basis of compatible and succession IGMPv1 and IGMPv2
Power, and enhance the function of inquiry and report message.The enhancing of its host computer control ability, IGMPv3 are added for multicast source
Filtered model (INCLUDE/EXCLUDE) makes host that can be distinctly claimed reception or refusal while certain multicast group G is added in
Multicast information from certain specific multicast source S.It is inquired about and the enhancing of report message function, carries the query message of source address,
Include the report message of multigroup record.In the present invention, the processor in the multicast control device 10 based on SDN network
102 are additionally operable to perform the multicast control program to realize the step as shown in Fig. 3, Fig. 4, Fig. 5.
The above-mentioned multicast control device 10 based on SDN network by implementing the above-mentioned multicast control device based on SDN network,
It can so that the control of SDN network is more efficient, safe, directly perceived.
Another aspect based on above-described embodiment, the present invention also provides a kind of storage medium, the storage medium storage
There are one or multiple programs, one or more of programs can be executed by one or more processors, to realize above-mentioned be based on
The step of multicast control method of SDN network.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those elements, and
And it further includes other elements that are not explicitly listed or further includes as this process, method, article or device institute inherently
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
Also there are other identical elements in the process of element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme substantially in other words does the prior art
Going out the part of contribution can be embodied in the form of software product, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), used including some instructions so that a station terminal equipment (can be mobile phone, computer takes
Be engaged in device, air conditioner or the network equipment etc.) perform method described in each embodiment of the present invention.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of multicast control method based on SDN network, applied to SDN network, which is characterized in that the described method includes：
Obtain the attaching information of destination host；
Judge the destination host whether in multicast group according to the attaching information of the destination host；
If so, obtain the multicast protocol version that the destination host in the multicast group is disposed；
Multicast control plane interaction machine is performed to the destination host according to the multicast protocol version disposed on the destination host
System.
2. the multicast control method based on SDN network as described in claim 1, which is characterized in that the method further includes：
If the destination host judges whether the destination host supports multicast not in the multicast group；
If it is not, the Multicast Routing of the multicast group is then established using the destination host as multicast member, to replicate described group
On multicast message to the SDN forwarding units for connecting the destination host for broadcasting group, and the SDN forwarding units are controlled by described group
The destination address for reporting text is revised as the unicast address for the destination host that the SDN forwarding units connect to obtain unicast report
Text；
The unicast message is sent to the port of the destination host connection.
3. the multicast control method based on SDN network as claimed in claim 2, which is characterized in that the method further includes：
If the destination host is not in the multicast group, and the destination host supports multicast, then makees the destination host
The Multicast Routing of the multicast group is established for multicast member, the SDN forwarding units of the destination host are connected by institute with control
The multicast message of multicast group is stated to being transferred to the port that connects the destination host.
4. the multicast control method based on SDN network as described in claim 1, which is characterized in that the method further includes：
Judge the multicast source and the destination host whether in same network according to the attaching information of the destination host；
If the multicast source and the destination host be not in same network, by the institute of multicast group where the destination host
State the processing that multicast message carries out preset strategy at Inter-Network Interface of the multicast source belonging network with leading to the destination host；
The network treated the multicast message being sent to by the Inter-Network Interface where the destination host；
Control connects the SDN forwarding units of the destination host, and to reception, treated that the multicast message carries out is described default
The reverse process of strategy；
Multicast message after the reverse process is sent to the destination host.
5. the multicast control method based on SDN network as claimed in claim 4, which is characterized in that the preset strategy includes
By the multicast message be converted into unicast message, will in the multicast message be inserted into label, by the multicast message carry out tunnel
Encapsulation.
6. the multicast control method based on SDN network as described in claim 1, which is characterized in that the method further includes：
When the destination host is present in the multicast group；
Monitor the destination host in a group state；
The destination host is shown by visualization interface on user's output equipment in group state.
7. the multicast control method based on SDN network as described in claim 1, which is characterized in that the method further includes：
When the destination host is present in the multicast group；
Monitor the multicast path between the multicast source and the destination host；
The multicast path is shown by visualization interface described on user's output equipment.
8. the multicast control method based on SDN network as claimed in claim 7, which is characterized in that the method further includes：
Monitor the loading condition in the relay path；
Optimal multicast path is selected according to the loading condition in the relay path.
9. a kind of multicast control device based on SDN network applied to SDN network, including memory, processor and is stored in institute
The control program of the multicast based on SDN network stated on memory and can run on the processor, it is described based on SDN network
Multicast control program realizes the step as described in claim 1-8 when being performed by the processor 102.
10. a kind of storage medium, the storage medium is stored with one or more programs, and one or more of programs can quilt
One or more processors perform, to realize the step as described in claim 1-8.
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