CN103763121A - Method and device for quickly issuing network configuration information - Google Patents
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Abstract
The invention provides a method and device for quickly issuing network configuration information. The method includes the steps that identifying information of a VM, the network configuration information of the VM and the corresponding relation between the identifying information and the network configuration information are received and stored, wherein the identifying information of the VM and the network configuration information of the VM are sent by a network management system; a notification message uploaded by the VM is received, and the network configuration information of the VM is issued to an uplink SDN access switch corresponding to a physical server where the VM is located. By means of the method and device for quickly issuing the network configuration information, network configuration of the VM can be quickly adjusted under the condition of dynamic migration of the VM in an SDN environment, and a user will not sense the change of the position of the VM.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of SDN(Software Defined Network, software defined network) virtual machine network configuration information issues fast under network method and corresponding device thereof.
Background technology
Along with the development of Internet service, Internet service is shorter and shorter for the time requirement of disposing on the internet, such as a service deployment several years ago often needs the time of some months, but also will spend a large amount of manpowers.And a present Internet service may require, in the situation that dropping into a small amount of manpower, to complete deployment in several days.Internet service of rapid deployment how, this just relates to some new technology, such as SDN technology, under the model of SDN definition, can realize by the mode of software the deployment to business, thereby reduce human input, reduction of erection time.
As shown in Figure 1, SDN switch is except existing each other SDN data channel for forwarding data packets for typical SDN network, and also by one, independently SDN management channels and SDN controller connect.When SDN switch is received after first data message, can be by message up sending to SDN controller, SDN controller, through certain calculating, informs how SDN switch further processes this message.
When SDN network application is during in data center, under SDN switch, hang data center server.Yet, when carrying out virtualization applications, server (for example creates virtual machine), and network management system cannot be in time rapidly for this virtualization applications completes network information configuration.In addition, the virtual machine on server need to move to another place, conventionally requires virtual machine and the application in the above of operation can not intermittent operation, so that actual user can not perceive the position of virtual machine, changes.In this case, require equally network configuration information can issue in time with virtual machine change in location, but current network management system cannot support this kind dynamically to adjust and issue function.
Summary of the invention
In view of this, method and device that a kind of network configuration information provided by the invention issues fast, by the present invention, the network configuration information that can realize virtual machine user issues fast automaticly.
Particularly, the method that a kind of network configuration information provided by the invention issues fast, is applied to complete on the controller in described SDN network to the issuing of virtual machine network configuration information, and described method comprises:
The identifying information of virtual machine that steps A, reception storage network guard system send is, the corresponding relation of the network configuration information of virtual machine and described identifying information and described network configuration information;
The notification packet sending on step B, sink virtual machine, issues the network configuration information of this virtual machine to up SDN access switch corresponding to described virtual machine place physical server;
In wherein said notification packet, include the identifying information of described virtual machine.
Preferably, described method also comprises: when the identifying information carrying in the notification packet sending on virtual machine matches the virtual machine identifying information of local terminal storage, further according to this virtual machine identifying information calculate this virtual machine access up SDN access switch identifying information and it is kept to local terminal.
Preferably, on described virtual machine, send notification packet, be specially when this virtual machine creating initial launch or while there is dynamic migration.
Preferably, described method also comprises:
The identifying information that the uplink port of the SDN switch that receives described notification packet of take is SDN switch described in search index; If the identifying information of the SDN switch inquiring is different from the identifying information of the up SDN access switch of the described virtual machine access of local terminal storage, judge that described virtual machine moves;
When migration occurs described virtual machine, upgrade in the lump the identifying information of the described up SDN access switch of storage.
Preferably, the identifying information of described virtual machine is specially the MAC Address of described virtual machine, the information that IP address and/or other can this virtual machines of unique identification, and the identifying information of described SDN switch is the DPID of this SDN switch.
The present invention also provides a kind of device of the virtual machine dynamic migration based on SDN network, is applied to complete on the SDN controller in described SDN network to the issuing of virtual machine network configuration information, and described device comprises:
Memory module, for receive and the identifying information of virtual machine that storage network guard system sends, the corresponding relation of the network configuration information of virtual machine and described identifying information and described network configuration information;
Issue module, for receiving the notification packet sending on described virtual machine, to up SDN access switch corresponding to described virtual machine place physical server, issue the network configuration information of this virtual machine;
Wherein, described notification packet comprises the identifying information of described virtual machine.
Preferably, when the identifying information carrying in the notification packet sending on virtual machine matches the virtual machine identifying information of local terminal storage, described in issue module further according to this virtual machine identifying information calculate this virtual machine access up SDN switch identifying information and it is kept to local terminal.
Preferably, on described virtual machine, send notification packet, be specially when this virtual machine creating initial launch or while there is dynamic migration.
Preferably, described in, issue uplink port that module is further used for receiving the SDN switch of described notification packet and be the identifying information of SDN switch described in search index; If the identifying information of the SDN switch inquiring is different from the DPID of the up SDN switch of the described virtual machine access of local terminal storage, judge that described virtual machine moves;
When migration occurs described virtual machine, upgrade in the lump the identifying information of the up SDN switch of the described access of storing.
Preferably, the identifying information of described virtual machine is specially the MAC Address of described virtual machine, the information that IP address and/or other can this virtual machines of unique identification, and the identifying information of described SDN switch is the DPID of this SDN switch.
The present invention program is by receiving and preserve identifying information and the network configuration information of the VM of network management system transmission, the network configuration information that completes in time this VM by detecting the notification packet sending on VM issues, thereby solved the network configuration that virtual machine cannot complete this VM automatically rapidly in SDN net environment lower network management system, issue, avoided administrator hand to carry out network configuration and caused the interruption of upper layer application.
Accompanying drawing explanation
Fig. 1 is typical SDN networking diagram;
Fig. 2 is that SDN network application is in the networking diagram of data center;
Fig. 3 is the method flow diagram of SDN virtual machine dynamic migration in the exemplary a kind of execution mode of the present invention;
Fig. 4 is the logic device figure of SDN virtual machine dynamic migration in the exemplary a kind of execution mode of the present invention.
Fig. 5 is the logic device figure of SDN virtual machine dynamic migration in the exemplary a kind of execution mode of the present invention.
Embodiment
At a typical SDN net environment, all SDN exchange opportunities report controller Controller according to Table Miss rule by the message unification not matching, and then by Controller, to SDN switch, issue stream table (Flow Table) and inform how SDN switch processes this message.In stream table, how each entry can process the message being associated with this entry with the associated SDN of a telling switch of action.So-called Table Miss rule refers to: SDN switch is received after a message, if this message does not find coupling entry in current stream table, be referred to as a Table Miss, for the processing of Table Miss message, depend on the configuration of Flow Table, under default situations, this message can be reported to controller Controller or directly abandons.
Please refer to Fig. 2, when SDN network application is during in data center, SDN switch is below by the physical server at connection data center.Every physical server can be by the loaded virtual machine management platform VM different for user creates.In the SDN network environment shown in Fig. 2, all virtual machines (VM) that server creates and all SDN switches in this network, all by network management system (Network Management System, NMS) unification is carried out network configuration for it, and all network configuration informations are carried out to unified management.Yet, because all stream rules in SDN network are all issued by controller Controller, therefore after the VM on server creates or moves, NMS cannot by local terminal, preserve the network configuration information of VM so that complete VM SDN access switch issue configuration, keeper can only by NMS manual for VM carries out network configuration, thereby cause VM and upper layer application to be interrupted.
For this reason, the invention provides a kind of method that network configuration information issues fast, be applied on the controller in SDN network, by receiving and preserve the identifying information of the VM that network management system sends and corresponding network configuration information, when receiving the notification packet sending on VM, according to the VM identifying information carrying in this notification packet, the network configuration information of this VM preserving is in advance handed down on the SDN access switch that this VM is corresponding dynamically, solve virtual machine NMS under SDN net environment and can not dynamically complete in time this VM configuration, avoided administrator hand to carry out issuing of network configuration information.
For making object of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, scheme of the present invention is described in further detail.
Referring to Fig. 3, the present invention exemplary a kind of preferred embodiment in, the method that a kind of network configuration information provided by the invention issues fast, the method is applied to complete on the controller in SDN network to the issuing of virtual machine network configuration information, and carries out following steps:
The identifying information of virtual machine that step S301, reception storage network guard system send is, the corresponding relation of the network configuration information of virtual machine and described VM identifying information and described network configuration information;
The notification packet sending on step S302, sink virtual machine, issues the network configuration information of this virtual machine to up SDN access switch corresponding to virtual machine place physical server.
Wherein, the present invention exemplary a kind of preferred embodiment in, described notification packet can be free ARP message or icmp packet etc.Described notification packet comprises the identifying information of described virtual machine.
The present invention exemplary a kind of preferred embodiment in, be by a the object of the invention APP(upper application software that realizes of independent exploitation), and this APP be loaded into Controller realize the function that in SDN network, VM network configuration information issues fast.
When specific implementation, keeper by the physical server having loaded Virtual Machine Manager platform software for user creates VM.Then, the NM server by having loaded NMS carries out network configuration for this VM.Wherein, use different VLAN to isolate between different user, the VM that is different user configures respectively different VLAN.As keeper, by NMS NM server, the VM for establishment completes after necessary network configuration, and the identifying information of this VM is sent to the APP of the present invention on Controller.The present invention exemplary a kind of preferred embodiment in, the MAC Address that the identifying information of VM is this VM.Certainly, the identifying information of described VM can also for the IP address of this VM and/or other can this VM of unique identification information.When described APP receives after the identifying information of the described VM that NMS sends after (MAC Address), this MAC Address is registered at local terminal.Meanwhile, the identifying information of the described VM that described APP sends according to NMS, carries out the calculating of SDN access switch corresponding to this VM place, and the identifying information of the SDN switch obtaining after calculating is preserved at local terminal in the lump.After above-mentioned information registering completes, NMS is uploaded to described APP after the network configuration information of this VM is translated into the stream rule that SDN network is corresponding.For described APP, the identifying information of the described VM that preservation receives and network configuration information, and preserve the identifying information of described VM and the corresponding relation of network configuration information, so that when receiving the identifying information of described VM, can find exactly the network configuration information that this VM is corresponding according to described corresponding relation.In exemplary embodiments of the present invention, the network configuration information of VM comprises that NMS is the information such as VLAN, ACL, the QOS of this VM configuration.Wherein, the present invention exemplary a kind of preferred embodiment in, the identifying information of the up SDN access switch that described VM is corresponding is specially the DPID(Data Path id of this SDN switch, data path sign).In SDN network environment, DPID is the unique identification of Controller identification SDN switch.
In exemplary embodiments of the present invention, when starting operation or migration event occurring after VM creates, VM all can send a notification packet on Controller, comprises the identifying information of this VM in this notification packet.Described notification packet take below as ARP message, and the identifying information of described VM is that MAC Address is example, describes specific implementation of the present invention in detail.
As shown in Figure 4, described in the message format of ARP message, the identifying information of VM is the arp-sha field that the MAC Address of described VM is arranged in described ARP message.In the present invention,
When described VM starts operation, according to the present invention, the up SDN access switch that described VM is corresponding can receive the notification packet sending on VM, according to Table Miss rule, in FlowTable, mates.Because this notification packet is that VM starts the first message sending after operation, obviously, in FlowTable, cannot match corresponding entry, according to the present invention, by this ARP message up sending Controller, Controller can give this ARP message subsequently described APP and process.When described APP receives after this ARP message, owing to having preserved before this MAC Address of this VM, and preserved the DPID of the SDN access switch that this VM is corresponding, therefore, directly the network configuration information of this VM is handed down to the up SDN access switch that this VM is corresponding, and then complete issuing fast of this VM network configuration.
When there is migration in described VM, according to the present invention, up SDN access switch after described VM migration can receive the ARP notification packet sending on the rear VM of this migration, in the FlowTable of up SDN access switch that will be corresponding after described VM migration according to Table Miss rule, mate.Because this notification packet is the rear first message sending of VM migration, obviously, in FlowTable after described VM migration in the up SDN access switch of correspondence, cannot match corresponding entry, according to the present invention, by this ARP message up sending Controller, Controller can give this ARP message subsequently described APP and process.Described APP inquires about the DPID of the SDN switch corresponding with this port according to the uplink port that receives the SDN switch of this notification packet.Now, the DPID of the upper up SDN switch that is still the initial place of this VM physical server of preserving of described APP, therefore, the DPID of the up SDN access switch of the initial place of this VM physical server that the DPID of the SDN access switch inquiring by described uplink port preserves with local terminal is not identical, and described APP can judge that migration has occurred this VM.So the network configuration information of this VM is handed down to rear up SDN switch corresponding to place physical server of this VM migration, upgrade the DPID of the SDN access switch of local terminal preservation simultaneously, thereby the network configuration information before having guaranteed this VM migration and after migration on the up SDN switch of access physical server is consistent, from the maximum time that has shortened upper layer application interruption.When described VM moves again, repeat above step, specific implementation process no longer describes in detail.
Known by above implementation, in implementation of the present invention, no matter VM initial start-up operation still moves after migration, and issuing of network configuration information is all by described APP, to detect the notification packet sending on VM to trigger, therefore, NMS is without establishment and the migration event of monitoring VM.In the whole process of VM migration, described APP judges by detecting the notification packet sending on described VM whether this VM moves, and dynamically in time network configuration information corresponding to VM is handed down to corresponding SDN switch.
Refer to Fig. 5, the present invention exemplary a kind of preferred embodiment in, the device 50 that the present invention also provides a kind of network configuration information to issue fast, completes issuing virtual machine network configuration information on the controller of described application of installation in SDN network.In the hardware structure relating to as the physical server that carries apparatus of the present invention, generally include CPU, internal memory, nonvolatile memory, IO interface and other hardware.With software, be embodied as example, apparatus of the present invention 50 can be understood as the computer program being carried in internal memory conventionally, the logic device that the software and hardware forming after moving by CPU combines, and this device 50 comprises:
Wherein said notification packet comprises the identifying information of described virtual machine.
In the present embodiment, when the identifying information carrying in the notification packet sending on virtual machine matches the virtual machine identifying information of local terminal storage, described in issue module and further according to this virtual machine identifying information, calculate at the identifying information of the up SDN switch of virtual machine access and it is kept to local terminal.
In the present embodiment, on described virtual machine, send notification packet, while specifically occurring in this virtual machine creating initial launch or while there is dynamic migration.
In the present embodiment, described in, issue uplink port that module is further used for receiving the SDN switch of described notification packet and be the identifying information of SDN switch described in search index; If the identifying information of the SDN switch inquiring is different from the DPID of the up SDN switch of the described virtual machine access of local terminal storage, judge that described virtual machine moves;
When migration occurs described virtual machine, upgrade in the lump the identifying information of the up SDN switch of the described access of storing.
In the present embodiment, the identifying information of described virtual machine is specially the MAC Address of described virtual machine, the information that IP address and/or other can this virtual machines of unique identification, and the identifying information of described SDN switch is the DPID of this SDN switch.
By the description of above embodiment, it will be appreciated by those skilled in the art that in embodiment, a unit can be merged in the unit in device, also can further split into a plurality of subelements.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (10)
1. the method that network configuration information issues fast, is applied to complete on the controller in described SDN network to the issuing of virtual machine network configuration information, and it is characterized in that, described method comprises:
The identifying information of virtual machine that steps A, reception storage network guard system send is, the corresponding relation of the network configuration information of virtual machine and described identifying information and described network configuration information;
The notification packet sending on step B, sink virtual machine, issues the network configuration information of this virtual machine to up SDN access switch corresponding to described virtual machine place physical server;
In wherein said notification packet, include the identifying information of described virtual machine.
2. the method for claim 1, it is characterized in that, described method also comprises: when the identifying information carrying in the notification packet sending on virtual machine matches the virtual machine identifying information of local terminal storage, further according to this virtual machine identifying information calculate this virtual machine access up SDN switch identifying information and it is kept to local terminal.
3. the method for claim 1, is characterized in that,
On virtual machine, send notification packet, while specifically occurring in this virtual machine creating initial launch or while there is dynamic migration.
4. the method as described in claim 1 or 3, is characterized in that, described step B also comprises:
The identifying information that the uplink port of the SDN switch that receives described notification packet of take is SDN switch described in search index; If the identifying information of the SDN switch inquiring is different from the identifying information of the up SDN switch of the described virtual machine access of local terminal storage, judge that described virtual machine moves;
When migration occurs described virtual machine, upgrade in the lump the identifying information of the up SDN switch of the described access of storing.
5. method as claimed in claim 1 or 2, it is characterized in that, the identifying information of described virtual machine is specially the MAC Address of described virtual machine, the information that IP address and/or other can this virtual machines of unique identification, and the identifying information of described SDN switch is the DPID of this SDN switch.
6. a device for the virtual machine dynamic migration based on SDN network, is applied to complete on the SDN controller in described SDN network to the issuing of virtual machine network configuration information, and it is characterized in that, described device comprises:
Memory module, for receive and the identifying information of virtual machine that storage network guard system sends, the corresponding relation of the network configuration information of virtual machine and described identifying information and described network configuration information;
Issue module, for receiving the notification packet sending on described virtual machine, to up SDN access switch corresponding to described virtual machine place physical server, issue the network configuration information of this virtual machine;
Wherein, described notification packet comprises the identifying information of described virtual machine.
7. device as claimed in claim 6, is characterized in that,
When the identifying information carrying in the notification packet sending on virtual machine matches the virtual machine identifying information of local terminal storage, described in issue module further according to this virtual machine identifying information calculate this virtual machine access up SDN switch identifying information and it is kept to local terminal.
8. device as claimed in claim 6, is characterized in that,
On virtual machine, send notification packet, while specifically occurring in this virtual machine creating initial launch or while there is dynamic migration.
9. the device as described in claim 6 or 8, is characterized in that,
Issue uplink port that module is further used for receiving the SDN switch of described notification packet and be the identifying information of SDN switch described in search index; If the identifying information of the SDN switch inquiring is different from the DPID of the up SDN access switch of the described access of local terminal storage, judge that described virtual machine moves;
When migration occurs described virtual machine, upgrade in the lump the identifying information of the up SDN switch of the described access of storing.
10. the device as described in claim 6 or 7, it is characterized in that, the identifying information of described virtual machine is specially the MAC Address of described virtual machine, the information that IP address and/or other can this virtual machines of unique identification, and the identifying information of described SDN switch is the DPID of this SDN switch.
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