CN103763121B - The method and device that a kind of network configuration information quickly issues - Google Patents
The method and device that a kind of network configuration information quickly issues Download PDFInfo
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- CN103763121B CN103763121B CN201310724520.2A CN201310724520A CN103763121B CN 103763121 B CN103763121 B CN 103763121B CN 201310724520 A CN201310724520 A CN 201310724520A CN 103763121 B CN103763121 B CN 103763121B
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Abstract
The present invention provides the method and apparatus that a kind of network configuration information quickly issues.This method includes：Receive and store the identification information of virtual machine, the network configuration information of virtual machine and the corresponding relation of the identification information and the network configuration information of network management system transmission；The notification packet sent on the virtual machine is received, up SDN access switch corresponding to physical server where to the virtual machine issues the network configuration information of the virtual machine.The achievable virtual machine of the present invention rapidly adjusts network configuration during dynamic migration under SDN net environment for the VM, user is not perceived virtual machine position and changes.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of SDN（Software Defined Network, software
Define network）The method and its corresponding device that virtual machine network configuration information quickly issues under network.
Background technology
With the continuous development of Internet service, Internet service for the time requirement disposed on the internet increasingly
It is short, for example a service deployment generally requires the time of some months several years ago, but also to spend substantial amounts of manpower.And present one
Individual Internet service may be may require that in the case where putting into a small amount of manpower, and deployment was completed in several days.How rapid deployment one
Individual Internet service, this relates to some new technologies, such as SDN technologies, can be by soft under the model that SDN is defined
The mode of part realizes the deployment to business, so as to reduce human input, shortens the duration.
Typical SDN is as shown in figure 1, SDN switch is used to forward number except SDN data channel each other be present
Outside according to message, connection is also established by an independent SDN management passage and SDN controllers.When SDN switch receives first number
After message, message up sending can be given to SDN controllers, SDN controllers pass through certain calculating, inform how SDN switch is entered
One step handles the message.
When SDN is applied to data center, data center server is hung under SDN switch.However, enter in server
During row virtualization applications（Such as create virtual machine）, NMS can not be rapidly in time virtualization applications completion net
Network information configuration.In addition, when the virtual machine on server needs to move to another place, usually require that virtual machine and operate in
Application above it is unable to intermitten service, and the position that virtual machine can not be perceived so as to actual user changes.In this feelings
Under condition, also require that network configuration information can be issued in time with virtual machine change in location, but current network management
System can not support this kind dynamic adjustment to issue function.
The content of the invention
In view of this, the method and device that a kind of network configuration information provided by the invention quickly issues, by the present invention,
It can realize that the network configuration information of virtual machine user issues fast automaticly.
Specifically, the method that a kind of network configuration information provided by the invention quickly issues, applied in the SDN
Controller on complete to issue virtual machine network configuration information, methods described includes：
Step A, reception and store network management system transmission the identification information of virtual machine, the network configuration information of virtual machine with
And the corresponding relation of the identification information and the network configuration information；
Step B, the notification packet sent on virtual machine is received, it is up corresponding to physical server where to the virtual machine
SDN access switch issues the network configuration information of the virtual machine；
Include the identification information of the virtual machine in wherein described notification packet.
Preferably, methods described also includes：When the identification information carried in the notification packet sent on virtual machine matches this
When holding the virtual machine identification information of storage, then the up of virtual machine access is further calculated according to the virtual machine identification information
It is simultaneously stored in local terminal by the identification information of SDN access switch.
Preferably, notification packet is sent on the virtual machine, specially when the virtual machine creating initial launch or generation
During dynamic migration.
Preferably, methods described also includes：
Using receive the notification packet SDN switch uplink port as SDN switch described in search index knowledge
Other information；If the identification information of the SDN switch inquired and the up SDN of the virtual machine access of local terminal storage are accessed
The identification information of interchanger is different, then judges that the virtual machine migrates；
When the virtual machine migrates, the identification information of the up SDN access switch of storage is updated in the lump.
Preferably, the identification information of the virtual machine is specially the MAC Address of the virtual machine, IP address and/or other
Can be with the information of the unique mark virtual machine, the identification information of the SDN switch is the DPID of the SDN switch.
The present invention also provides a kind of device of the dynamic migration of virtual machine based on SDN, applied in the SDN
SDN controllers on complete to issue virtual machine network configuration information, described device includes：
Memory module, for receiving and storing the identification information of virtual machine of network management system transmission, the network of virtual machine is matched somebody with somebody
Confidence ceases and the corresponding relation of the identification information and the network configuration information；
Module is issued, for receiving the notification packet sent on the virtual machine, physical server where to the virtual machine
Corresponding up SDN access switch issues the network configuration information of the virtual machine；
Wherein, the notification packet includes the identification information of the virtual machine.
Preferably, the virtual machine for local terminal storage being matched when the identification information carried in the notification packet sent on virtual machine is known
During other information, the up SDN friendships for issuing module and virtual machine access then further being calculated according to the virtual machine identification information
It is simultaneously stored in local terminal by the identification information changed planes.
Preferably, notification packet is sent on the virtual machine, specially when the virtual machine creating initial launch or generation
During dynamic migration.
Preferably, the module that issues is further used for receive the upstream ends of the SDN switch of the notification packet
Mouth is the identification information of SDN switch described in search index；If the identification information of the SDN switch inquired stores with local terminal
Virtual machine access up SDN switch DPID it is different, then judge that the virtual machine migrates；
When the virtual machine migrates, the identification letter of the up SDN switch of the access of storage is updated in the lump
Breath.
Preferably, the identification information of the virtual machine is specially the MAC Address of the virtual machine, IP address and/or other
Can be with the information of the unique mark virtual machine, the identification information of the SDN switch is the DPID of the SDN switch.
The identification information and network configuration information for the VM that the present invention program is sent by receiving and preserving network management system, pass through
The network configuration information that the notification packet sent on detection VM completes the VM in time issues, so as to solve virtual machine in SDN net rings
The network configuration that border lower network management system can not quickly complete the VM automatically issues, and avoids keeper and carries out network manually
Configure and cause the interruption of upper layer application.
Brief description of the drawings
Fig. 1 is typical SDN networking diagrams；
Fig. 2 is the networking diagram that SDN is applied to data center；
Fig. 3 is the method flow diagram of SDN dynamic migration of virtual machine in a kind of exemplary embodiment of the present invention；
Fig. 4 is the message format of ARP messages；
Fig. 5 is the logic device figure of SDN dynamic migration of virtual machine in a kind of exemplary embodiment of the present invention.
Embodiment
Under a typical SDN environment, all SDN switches can will not matched according to Table Miss rules
To message uniformly report controller Controller, then issue flow table from Controller to SDN switch（Flow
Table）To inform how SDN switch handles the message.Each entry can be associated to tell SDN with an action in flow table
How interchanger handles the message associated with this entry.So-called Table Miss rules refer to：SDN switch receives one
After individual message, if the message does not find matching entry, referred to as a Table Miss in current flow table, for
The processing of Table Miss messages depends on Flow Table configuration, the message can be reported into controller under default situations
Controller is directly abandoned.
Fig. 2 is refer to, when SDN is applied to data center, SDN switch will connect the physics of data center below
Server.Every physical server can create different VM for user by loaded virtual machine management platform.Shown in Fig. 2
In SDN environment, all virtual machines of server establishment（VM）And all SDN switches in the network, all by network
Management system（Network Management System, NMS）It is unified for it and carries out network configuration, and all networks is matched somebody with somebody
Confidence breath is managed collectively.However, all issued because all streams are regular in SDN by controller Controller,
Therefore after the VM on server is created or is migrated, NMS can not be by preserving VM network configuration information in local terminal and then complete
SDN access switch into VM issues configuration, keeper can only by NMS it is manual for VM carry out network configuration, so as to lead
Cause VM and upper layer application interruption.
Therefore, the present invention provides a kind of method that network configuration information quickly issues, applied to the controller in SDN
On, the VM sent by receiving and preserving network management system identification information and corresponding network configuration information, when receiving on VM
The notification packet sent, according to the VM identification informations carried in the notification packet, by the VM pre-saved network configuration information
Dynamically it is handed down to corresponding to the VM on SDN access switch, solving virtual machine, NMS can not dynamic under SDN net environment
VM configurations are had timely completed, keeper is avoided and carries out issuing for network configuration information manually.
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right
Scheme of the present invention is described in further detail.
Referring to Fig. 3, in a kind of exemplary preferred embodiment of the present invention, a kind of network configuration provided by the invention
The method that information quickly issues, this method are applied to complete to virtual machine network configuration information on the controller in SDN
Issue, and perform following steps：
Step S301, reception and store network management system transmission virtual machine identification information, the network configuration of virtual machine letter
Breath and the corresponding relation of the VM identification informations and the network configuration information；
Step S302, the notification packet sent on virtual machine is received, up SDN corresponding to physical server where to virtual machine
Access switch issues the network configuration information of the virtual machine.
Wherein, in a kind of exemplary preferred embodiment of the present invention, the notification packet can be free ARP
Message or icmp packet etc..The notification packet includes the identification information of the virtual machine.
It is a to realize the object of the invention by individually developing in a kind of exemplary preferred embodiment of the present invention
APP（Upper application software）, and the APP is loaded into Controller VM network configuration informations are quick in SDN to realize
The function of issuing.
In specific implementation, keeper is by being user on the physical server of virtual machine management platform software is loaded with
Create VM.Then, network configuration is carried out by being loaded with NMS NM server for the VM.Wherein, used between different user
Different VLAN are isolated, and different VLAN is respectively configured in the VM of as different user.When keeper passes through NMS network manager services
After device completes necessary network configuration for the VM created, the present invention that the identification information of the VM is sent on Controller
APP.In a kind of exemplary preferred embodiment of the present invention, VM identification information is the MAC Address of the VM.Certainly, institute
State VM identification information can also for the VM IP address and/or other can be with unique mark VM information.When the APP is received
After the VM sent to NMS identification information（MAC Address）Afterwards, the MAC Address is registered in local terminal.It is meanwhile described
APP carries out the calculating of SDN access switch corresponding to VM places, and incite somebody to action according to the NMS VM sent identification information
The identification information of the SDN switch obtained after calculating is preserved in local terminal in the lump.After the completion of above- mentioned information registration, NMS will
The network configuration information of the VM is uploaded to the APP after translating into stream rule corresponding to SDN.For the APP, preservation connects
The VM received identification information and network configuration information, and preserve the identification information of the VM and pair of network configuration information
It should be related to, so that when receiving the identification information of the VM, can be according to corresponding to the corresponding relation correctly finds the VM
Network configuration information.In exemplary embodiments of the present invention, it is VM configurations that VM network configuration information, which includes NMS,
The information such as VLAN, ACL, QOS.Wherein, it is up corresponding to the VM in a kind of exemplary preferred embodiment of the present invention
The identification information of SDN access switch is specially the DPID of the SDN switch（Data Path id, data path mark）.
In SDN environment, DPID is the unique mark of Controller identification SDN switches.
In exemplary embodiments of the present invention, when startup optimization after VM establishments or generation migration event, VM can
A notification packet is sent on to Controller, the identification information of the VM is included in the notification packet.Reported below with the notice
Text is ARP messages, exemplified by the identification information of the VM is MAC Address, specific implementation of the present invention is described in detail.
The message format of ARP messages as shown in Figure 4, the identification information of the VM are the MAC Address of the VM positioned at described
Arp-sha fields in ARP messages.In the present invention,
When the VM startup optimizations, according to the present invention, up SDN access switch corresponding to the VM can receive VM
On the notification packet that send, matched according to Table Miss rules in FlowTable.Because this notification packet is VM startups
The first message sent after operation, it is clear that corresponding entry can not be matched in FlowTable, according to of the invention by the ARP
Message up sending Controller, Controller can then give the ARP messages APP processing.When the APP receives this
After ARP messages, due to having preserved the MAC Address of the VM before this, and SDN access switch corresponding to the VM is saved
DPID, therefore, the network configuration information of the VM is directly handed down to up SDN access switch corresponding to the VM, and then complete
The quick of the VM network configurations issues.
When the VM is migrated, according to the present invention, the up SDN access switch after the VM migrations can receive
The ARP notification packets sent after the migration on VM, corresponding up SDN it will be connect after VM migrations according to Table Miss rules
Enter and matched in the FlowTable of interchanger.The first message sent after being migrated due to this notification packet for VM, it is clear that
Corresponding entry can not be matched in FlowTable after the VM migrations in corresponding up SDN access switch, according to this
Invention can then give the ARP messages ARP message up sending Controller, Controller to the APP processing.It is described
APP inquires about SDN switch corresponding with the port according to the uplink port for the SDN switch for receiving the notification packet
DPID.Now, that preserved on the APP is still the DPID of the up SDN switch of physical server where the VM initial, because
This, the initial place physics of the VM that DPID and the local terminal of the SDN access switch inquired by the uplink port preserve takes
The DPID of the up SDN access switch of business device is differed, then the APP can be determined that the VM is migrated.Then should
VM network configuration information is handed down to up SDN switch corresponding to the physical server of place after VM migrations, while updates this
The DPID of the SDN access switch preserved is held, so as to ensure that the VM accesses the up of physical server after migrating preceding and migration
Network configuration information in SDN switch is consistent, from the time for farthest shortening upper layer application interruption.When the VM again
Secondary to repeat above step when migrating, specific implementation process is no longer described in detail.
By implementation above scheme, in implementation of the present invention, no matter VM initial start-ups operation or after migrating
Operation, issuing for network configuration information is triggered by the notification packet sent on APP detections VM, and therefore, NMS need not
Monitor VM establishment and migration event.I.e. during the entire process of VM migrations, the APP is by detecting the notice sent on the VM
Message judges whether the VM migrates, and network configuration information corresponding to VM is in time handed down to corresponding SDN by dynamic
Interchanger.
Fig. 5 is referred to, in a kind of exemplary preferred embodiment of the present invention, the present invention also provides a kind of network and matched somebody with somebody
The device 50 that confidence breath quickly issues, described device are applied to complete to configure virtual machine network on the controller in SDN
Information issues.In the hardware structure that is related to of physical server as carrying apparatus of the present invention, CPU, internal memory, non-is generally included
Volatile memory, I/O interface and other hardware.Exemplified by implemented in software, apparatus of the present invention 50 are it is generally understood that loading
Computer program in internal memory, the logic device that the software and hardware formed afterwards by CPU operations is combined, the device 50 wrap
Include：
Memory module 51, the identification information of the virtual machine for receiving and storing network management system transmission, the network of virtual machine
Configuration information and the corresponding relation of the identification information and the network configuration information；
Module 52 is issued, is taken for receiving the notification packet sent on the virtual machine, and to physics where the virtual machine
Up SDN access switch corresponding to business device issues the network configuration information of the virtual machine.
Wherein described notification packet includes the identification information of the virtual machine.
In the present embodiment, when the identification information carried in the notification packet sent on virtual machine matches the void of local terminal storage
During plan machine identification information, the module that issues then further is calculated in the up of virtual machine access according to the virtual machine identification information
It is simultaneously stored in local terminal by the identification information of SDN switch.
In the present embodiment, notification packet is sent on the virtual machine, specifically occurred in the virtual machine creating initial launch
Or when dynamic migration occurs.
In the present embodiment, the module that issues is further used for receive the SDN switch of the notification packet
Uplink port is the identification information of SDN switch described in search index；If the identification information of the SDN switch inquired and sheet
The DPID of the up SDN switch of the virtual machine access of end storage is different, then judges that the virtual machine migrates；
When the virtual machine migrates, the identification letter of the up SDN switch of the access of storage is updated in the lump
Breath.
In the present embodiment, the identification information of the virtual machine is specially the MAC Address of the virtual machine, IP address and/
Or other can be with the information of the unique mark virtual machine, the identification information of the SDN switch is the DPID of the SDN switch.
By the description of above example, it will be appreciated by those skilled in the art that the unit in embodiment in device can close
And be a unit, multiple subelements can also be further split into.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (10)
1. a kind of method that network configuration information quickly issues, applied to complete on the controller in software defined network SDN
Paired virtual machine network configuration information issues, it is characterised in that methods described includes：
Step A, reception and store network management system transmission the identification information of virtual machine, the network configuration information of virtual machine and institute
State the corresponding relation of identification information and the network configuration information；Wherein, the network configuration information is turned over by the network management system
The controller is uploaded to after being translated into stream rule；
Step B, the notification packet sent on virtual machine is received, up SDN corresponding to physical server where to the virtual machine connects
Enter the network configuration information that interchanger issues the virtual machine；And when the virtual machine migrates, sent out to the virtual machine
Up SDN switch dynamic issues the network configuration information of the virtual machine corresponding to physical server where after raw migration；
Include the identification information of the virtual machine in wherein described notification packet.
2. the method as described in claim 1, it is characterised in that methods described also includes：When the notification packet sent on virtual machine
When the identification information of middle carrying matches the virtual machine identification information of local terminal storage, then further according to the virtual machine identification information
Calculate the identification information of the up SDN switch of virtual machine access and it is stored in local terminal.
3. the method as described in claim 1, it is characterised in that
Notification packet is sent on virtual machine, when specifically occurring in the virtual machine creating initial launch or dynamic migration occurs.
4. the method as described in claim 1 or 3, it is characterised in that the step B also includes：
Using receive the notification packet SDN switch uplink port as SDN switch described in search index identification believe
Breath；If the identification information of the SDN switch inquired and the up SDN switch of the virtual machine access of local terminal storage
Identification information is different, then judges that the virtual machine migrates；
When the virtual machine migrates, the identification information of the up SDN switch of the access of storage is updated in the lump.
5. method as claimed in claim 1 or 2, it is characterised in that the identification information of the virtual machine is specially described virtual
The MAC Address of machine, IP address and/or other can be with the information of the unique mark virtual machine, the identification information of the SDN switch
DPID is identified for the data path of the SDN switch.
A kind of 6. device of the dynamic migration of virtual machine based on SDN, applied on the SDN controllers in the SDN
Completion issues to virtual machine network configuration information, it is characterised in that described device includes：
Memory module, the identification information of the virtual machine for receiving and storing network management system transmission, the network configuration of virtual machine letter
Breath and the corresponding relation of the identification information and the network configuration information；Wherein, the network configuration information is by the net
Guard system is uploaded to the controller after being translated as stream rule；
Module is issued, for receiving the notification packet sent on the virtual machine, physical server is corresponding where to the virtual machine
Up SDN access switch issue the network configuration information of the virtual machine；And when the virtual machine migrates, to
The network that up SDN switch dynamic corresponding to the physical server of place issues the virtual machine after the virtual machine migrates is matched somebody with somebody
Confidence ceases；
Wherein, the notification packet includes the identification information of the virtual machine.
7. device as claimed in claim 6, it is characterised in that
When the identification information carried in the notification packet sent on virtual machine matches the virtual machine identification information of local terminal storage, institute
State and issue the identification letter that module then further calculates the up SDN switch of virtual machine access according to the virtual machine identification information
Cease and it is stored in local terminal.
8. device as claimed in claim 6, it is characterised in that
Notification packet is sent on virtual machine, when specifically occurring in the virtual machine creating initial launch or dynamic migration occurs.
9. the device as described in claim 6 or 8, it is characterised in that
Issue module and be further used for the uplink port of SDN switch to receive the notification packet as described in search index
The identification information of SDN switch；If the access that the identification information of the SDN switch inquired stores with local terminal is up
The DPID of SDN access switch is different, then judges that the virtual machine migrates；
When the virtual machine migrates, the identification information of the up SDN switch of the access of storage is updated in the lump.
10. device as claimed in claims 6 or 7, it is characterised in that the identification information of the virtual machine is specially described virtual
The MAC Address of machine, IP address and/or other can be with the information of the unique mark virtual machine, the identification information of the SDN switch
For the DPID of the SDN switch.
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