CN104243265A

CN104243265A - Gateway control method, device and system based on virtual machine migration

Info

Publication number: CN104243265A
Application number: CN201410449715.5A
Authority: CN
Inventors: 张辛波; 刘万来
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Cloud Computing Technologies Co Ltd
Priority date: 2014-09-05
Filing date: 2014-09-05
Publication date: 2014-12-24
Anticipated expiration: 2034-09-05
Also published as: WO2016034014A1; CN104243265B

Abstract

The embodiment of the invention discloses a gateway control method, device and system based on virtual machine migration, and relates to the communication field. The gateway control method, device and system are used for solving the problem that when data transmission is carried out after virtual machine migration, the bandwidth for conducting data transmission between devices is occupied so that bandwidth resources can be wasted. According to the scheme, the gateway control method includes the steps that an SDN controller obtains the IP address of a first virtual machine gateway, the MAC address of the first virtual machine gateway and the VTEP IP address of a second physical server; the SDN controller controls a second physical gateway to configure a second virtual machine gateway on the second physical gateway for a virtual machine according to the VTEP IP address of the second physical server, the IP address of the second virtual machine gateway is the same as the IP address of the first virtual machine gateway, and the MAC address of the second virtual machine gateway is the same as the MAC address of the first virtual machine gateway; a first flow list item is created to enable the second physical gateway to forward data to the virtual machine according to a data forwarding strategy indicated by the first flow list item.

Description

A kind of gateway control method, Apparatus and system based on virtual machine (vm) migration

Technical field

The present invention relates to the communications field, particularly relate to a kind of gateway control method, Apparatus and system based on virtual machine (vm) migration.

Background technology

Virtual machine (Virtual Machine, VM) refers to have complete hardware system function by software simulation, and operates in the computer system on physical server.A physical server can run multiple virtual machine simultaneously, and each virtual machine uses a part of physical resource in physical server, as central processing unit, internal memory etc.

Virtual machine can migrate to another physical server by a physical server, and physical server after migration runs, to realize load balancing, the function such as on-line maintenance and troubleshooting of server.Wherein, the physical gateway of the physical server at the front place of virtual machine (vm) migration is different from the physical gateway of the physical server at place after virtual machine (vm) migration, a physical gateway can configure the virtual machine gateway of at least one virtual machine.

Wherein, when virtual machine migrates to another physical server (physical server B) by a physical server (physical server A), the physical location of virtual machine there occurs change, and the virtual machine gateway of virtual machine is still on the physical gateway of physical server A, now, in order to ensure the continuity of business, virtual machine is when communicating with other virtual machines (other virtual machines are the virtual machine being in different segment with this virtual machine), need by switch, physical server B to be connected with physical server A, the virtual machine gateway (former virtual machine gateway) of this virtual machine that the physical gateway again by physical server A configures carries out the forwarding of data.

But, Problems existing is: virtual machine and when transmitting data from the virtual machine gateway that this virtual machine is in different physical server, some other equipment (as switch) between physical server are needed to forward these data, data retransmission extra between equipment then can carry out the data traffic of transfer of data between increase equipment, take the bandwidth of carrying out transfer of data between equipment, cause the waste of bandwidth resources.

Summary of the invention

Embodiments of the invention provide a kind of gateway control method, Apparatus and system based on virtual machine (vm) migration, during in order to solve virtual machine (vm) migration laggard row transfer of data, take the bandwidth of carrying out transfer of data between equipment, cause the problem that bandwidth resources are wasted.

For achieving the above object, embodiments of the invention adopt following technical scheme:

The first aspect of the embodiment of the present invention, a kind of gateway control method based on virtual machine (vm) migration is provided, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, when virtual machine migrates to described second physical server by described first physical server, described method comprises:

Software defined network SDN controller obtains the virtual channel terminal node VTEP IP address of the Internet protocol IP address of the first virtual machine gateway, the MAC address of described first virtual machine gateway and the second physical server, and described first virtual machine gateway is the virtual machine gateway of the described virtual machine be configured on described first physical gateway;

Described SDN controller is according to the VTEP IP address of described second physical server, controlling described second physical gateway is that described virtual machine configures the second virtual machine gateway on described second physical gateway, the IP address of described second virtual machine gateway is identical with the IP address of described first virtual machine gateway, and the MAC Address of described second virtual machine gateway is identical with the MAC Address of described first virtual machine gateway;

Described SDN controller creates first-class list item, the VTEP IP address of described second physical gateway is comprised in described first-class list item, the IP address of described second virtual machine gateway, the expansion Virtual Local Area Network VxLAN ID of the mapping relations between the MAC Address of described second virtual machine gateway and the IP address of described virtual machine and described virtual machine, and send described first-class list item to described second physical gateway, to make the data retransmission strategy of described second physical gateway indicated by described first-class list item be described virtual machine forwarding data, the VxLAN ID of described virtual machine is for identifying the network segment at described virtual machine place.

In conjunction with first aspect, in a kind of possible implementation, described SDN controller is according to the VTEP IP address of described second physical server, and controlling described second physical gateway is that described virtual machine configures the second virtual machine gateway on described second physical gateway, comprising:

Described SDN controller determines the VTEP IP address of described second physical gateway according to the VTEP IP address of described second physical server;

Described SDN controller is according to the VTEP IP address of described second physical gateway, and controlling described second physical gateway is that described virtual machine configures described second virtual machine gateway on described second physical gateway.

In conjunction with first aspect and above-mentioned possible implementation, in the implementation that another kind is possible, described SDN controller is according to the VTEP IP address of described second physical gateway, controlling described second physical gateway is that described virtual machine configures described second virtual machine gateway on described second physical gateway, comprising:

Described SDN controller is according to the VTEP IP address of described second physical gateway, send the IP address of described first virtual machine gateway and MAC Address extremely described second physical gateway of described first virtual machine gateway, on described second physical gateway, configure described second virtual machine gateway to make described second physical gateway according to the MAC Address of the IP address of described first virtual machine gateway and described first virtual machine gateway.

In conjunction with first aspect and above-mentioned possible implementation, in the implementation that another kind is possible, described software defined network SDN controller obtains the virtual channel terminal node VTEP IP address of the Internet protocol IP address of the first virtual machine gateway, the MAC address of described first virtual machine gateway and the second physical server, comprising:

Described SDN controller obtains virtual machine (vm) migration information, and described virtual machine (vm) migration information comprises: the VTEP IP address of the IP address of described virtual machine, the MAC Address of described virtual machine and described second physical server;

Described SDN controller determines the IP address of described first virtual machine gateway and the MAC Address of described first virtual machine gateway according to the IP address of described virtual machine and the MAC Address of described virtual machine.

In conjunction with first aspect and above-mentioned possible implementation, in the implementation that another kind is possible, after described SDN controller creates first-class list item, described method also comprises:

Delete second list item, in described second list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEPIP address of described first physical gateway, the IP address of the first virtual machine gateway, mapping relations between the MAC Address of described first virtual machine gateway and the IP address of described virtual machine and described virtual machine.

In conjunction with first aspect and above-mentioned possible implementation, in the implementation that another kind is possible, before described SDN controller creates first-class list item, after described SDN controller obtains virtual machine (vm) migration information, described method also comprises:

The VxLAN ID of described virtual machine is determined according to the IP address of described virtual machine and the MAC Address of described virtual machine.

In conjunction with first aspect and above-mentioned possible implementation, in the implementation that another kind is possible, after the first-class list item of described establishment, described method also comprises:

Judge in the network segment that the VxLAN ID of described virtual machine identifies, whether there is other virtual machines and use described first virtual machine gateway;

If in the network segment that the VxLAN ID of described virtual machine identifies, there is not other virtual machines described and use described first virtual machine gateway, then control described first physical gateway and delete the described first virtual machine gateway that described first physical gateway configures.

The second aspect of the embodiment of the present invention, a kind of software defined network SDN controller is provided, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by described first physical server in the process of described second physical server, described SDN controller comprises:

Acquiring unit, for obtaining the virtual channel terminal node VTEP IP address of the Internet protocol IP address of the first virtual machine gateway, the MAC address of described first virtual machine gateway and the second physical server, described first virtual machine gateway is the virtual machine gateway of the described virtual machine be configured on described first physical gateway;

Dispensing unit, for the VTEP IP address of described second physical server obtained according to described acquiring unit, controlling described second physical gateway is that described virtual machine configures the second virtual machine gateway on described second physical gateway, the IP address of the described first virtual machine gateway that IP address and the described acquiring unit of described second virtual machine gateway obtain is identical, and the MAC Address of described first virtual machine gateway that the MAC Address of described second virtual machine gateway and described acquiring unit obtain is identical;

Creating unit, for creating first-class list item, in described first-class list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of described second physical gateway, the IP address of described second virtual machine gateway, mapping relations between the MAC Address of described second virtual machine gateway and the IP address of described virtual machine and described virtual machine;

Transmitting element, for sending described first-class list item extremely described second physical gateway that creating unit creates, to make the data retransmission strategy of described second physical gateway indicated by described first-class list item be described virtual machine forwarding data, the VxLAN ID of described virtual machine is for identifying the network segment at described virtual machine place.

In conjunction with second aspect, in a kind of possible implementation, described dispensing unit, comprising:

First determines subelement, for determining the VTEP IP address of described second physical gateway according to the VTEP IP address of described second physical server;

Configuration subelement, for determining the VTEP IP address of described second physical gateway that subelement is determined according to described first, controlling described second physical gateway is that described virtual machine configures described second virtual machine gateway on described second physical gateway.

In conjunction with second aspect and above-mentioned possible implementation, in the implementation that another kind is possible, described dispensing unit, specifically for the VTEP IP address according to described second physical gateway, send the IP address of described first virtual machine gateway and MAC Address extremely described second physical gateway of described first virtual machine gateway, on described second physical gateway, configure described second virtual machine gateway to make described second physical gateway according to the MAC Address of the IP address of described first virtual machine gateway and described first virtual machine gateway.

In conjunction with second aspect and above-mentioned possible implementation, in the implementation that another kind is possible, described acquiring unit, comprising:

Obtain subelement, for obtaining virtual machine (vm) migration information, described virtual machine (vm) migration information comprises: the VTEP IP address of the IP address of described virtual machine, the MAC Address of described virtual machine and described second physical server;

Second determines subelement, determines the IP address of described first virtual machine gateway and the MAC Address of described first virtual machine gateway for the IP address of described virtual machine that obtains according to described acquisition subelement and the MAC Address of described virtual machine.

In conjunction with second aspect and above-mentioned possible implementation, in the implementation that another kind is possible, described SDN controller also comprises:

Delete cells, after creating described first-class list item in described creating unit, delete second list item, in described second list item, comprise the expansion Virtual Local Area Network VxLANID of the VTEP IP address of described first physical gateway, the IP address of the first virtual machine gateway, mapping relations between the MAC Address of described first virtual machine gateway and the IP address of described virtual machine and described virtual machine.

Determining unit, before creating described first-class list item in described creating unit, after described acquiring unit obtains described virtual machine (vm) migration information, determines the VxLAN ID of described virtual machine according to the IP address of described virtual machine and the MAC Address of described virtual machine.

Judging unit, after creating described first-class list item in described creating unit, judges in the network segment that the VxLAN ID of described virtual machine identifies, and whether there is other virtual machines and uses described first virtual machine gateway;

Described delete cells, if also judge in the network segment that the VxLANID obtaining described virtual machine identifies for described judging unit, there is not other virtual machines described and use described first virtual machine gateway, then control described first physical gateway and delete the described first virtual machine gateway that described first physical gateway configures.

The third aspect of the embodiment of the present invention, a kind of gateway control system based on virtual machine (vm) migration is provided, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by described first physical server in the process of described second physical server, described system comprises: software defined network SDN controller, described virtual machine, described first physical server, described first physical gateway, first virtual machine gateway, described second physical server, described second physical gateway and the second virtual machine gateway,

Described first virtual machine gateway is the virtual machine gateway of the described virtual machine be configured on described first physical gateway; Described second virtual machine gateway is the virtual machine gateway of the described virtual machine be configured on described second physical gateway;

Described SDN controller, for performing the gateway control method based on virtual machine (vm) migration according to any one of claim 1-7;

Second physical gateway, for the control according to described SDN controller, described second physical gateway configures described second virtual machine gateway;

Wherein, the Internet protocol IP address of described second virtual machine gateway is identical with the IP address of described first virtual machine gateway, and the MAC Address of described second virtual machine gateway is identical with the MAC address of described first virtual machine gateway.

The gateway control method based on virtual machine (vm) migration that the embodiment of the present invention provides, Apparatus and system, the virtual machine gateway (the first virtual machine gateway) physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration being configured with the virtual machine that configure upper with the physical gateway (the first physical gateway) of the physical server (the first physical server) before virtual machine (vm) migration has the virtual machine gateway (the second virtual machine gateway) of identical IP address and MAC Address, ensure that the virtual machine gateway address (the IP address of virtual machine gateway and the MAC Address of virtual machine gateway) before and after virtual machine (vm) migration is constant, and, record physical gateway can be sent, stream list item to the second physical gateway of the mapping relations of virtual machine gateway and virtual machine, to make virtual machine when carrying out transfer of data, can directly by virtual machine gateway (the second virtual machine gateway of the upper configuration of the physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration, namely with the virtual machine gateway before virtual machine (vm) migration, there is identical IP address and the virtual machine gateway of MAC Address) carry out data retransmission, the virtual machine gateway (the first virtual machine gateway) of the upper configuration of physical gateway (the first physical gateway) of physical server (the first physical server) residing before not needing to travel back across virtual machine (vm) migration carries out data retransmission, the data traffic of transfer of data can be carried out between minimizing equipment, and then the bandwidth of carrying out between minimizing equipment shared by transfer of data, the waste of bandwidth resources can be reduced to a certain extent.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of gateway control method flow diagram based on virtual machine (vm) migration in embodiment;

Fig. 2 is the gateway control method flow diagram of the another kind in embodiment based on virtual machine (vm) migration;

Fig. 3 is a kind of virtual machine 1 in embodiment and the communication interaction figure between virtual machine 2;

Fig. 4 is the form schematic diagram of a kind of VxLAN message in embodiment;

Fig. 5 is a kind of SDN controller composition schematic diagram in embodiment;

Fig. 6 is the another kind of SDN controller composition schematic diagram in embodiment;

Fig. 7 is the another kind of SDN controller composition schematic diagram in embodiment;

Fig. 8 is the another kind of SDN controller composition schematic diagram in embodiment;

Fig. 9 is the another kind of SDN controller composition schematic diagram in embodiment;

Figure 10 is the another kind of SDN controller composition schematic diagram in embodiment;

Figure 11 is another the SDN controller composition schematic diagram in embodiment;

Figure 12 is a kind of composition of the gateway control system based on the virtual machine (vm) migration schematic diagram in embodiment.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.The every other embodiment that those of ordinary skill in the art obtain according to the embodiment in the present invention, all belongs to the scope of protection of the invention.

In addition, term " system " and " network " are often used interchangeably in this article herein.Term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B.In addition, character "/" herein, general expression forward-backward correlation is to the relation liking a kind of "or".

To facilitate understanding of the present embodiment of the invention, first introduce during the embodiment of the present invention describes at this several terms that can introduce.

Data center: be a kind of data integrated system, be usually made up of assemblies such as computing system, storage system, communication system, the network equipment, environmental control system and safety systems, it is usually used in calculating and the storage of data.

Cloud management platform: the set that can be multiple management software also can be a software of the management function required for realization.Cloud management platform can with the centralized management of low running cost realization to large-scale data center.

Physical server: refer to that one provides the computer of service for management resource and for user.Relative to common computer, the requirement of physical server in stability and fail safe etc. is higher.

Virtual machine (Virtual Machine, VM): refer to, by software simulation, there is complete hardware system function, and operate in the computer system on physical server.A physical server can run multiple virtual machine simultaneously, and each virtual machine uses a part of physical resource in physical server, as central processing unit, internal memory etc.Also by multiple dissimilar application program, can operate on different virtual machines, and be incorporated on a physical server, the utilance of resource can be improved like this, improve the computing capability of data center.

Expansion Virtual Local Area Network (Virtual Extensible LAN, VxLAN): be a kind of technology that two layers of (data link layer) message are undertaken encapsulating by three layers of (network layer) agreement, can expand three layers of scope double layer network.It is applied to data center inside, virtual machine can be moved within the scope of the three-layer network interconnected, and do not need to change Internet protocol (Internet Protocol, IP) address and medium education (Media Access Control, MAC) address, ensures the continuity of business.

VxLAN ID (Virtual Extensible LAN ID): the identifier of the VxLAN network segment, the VxLAN ID of the virtual machine in the same network segment is identical.

Virtual channel terminal node (Virtual tunnel endpoint, VTEP): for (comprising address resolution protocol (Address Resolution Protocol to VxLAN message, ARP) request message and normal VxLAN data message) carry out encapsulation/decapsulation, at one end after VTEP encapsulated message by tunnel to other end VTEP send encapsulated message, after other end VTEP receives encapsulated message to message decapsulation and according to encapsulation MAC Address forward.VTEP can be realized by the hardware device or software supporting VxLAN.

ARP: be the transmission control protocol/Internet Protocol (Transmission Control Protocol/Internet Protocol, TCP/IP) according to IP address acquisition MAC Address.Its function is: local physical server is asked to all physics server broadcast ARP on network, and receive the return messages of certain physical server on network, the MAC Address of target physical server is determined, simultaneously by the IP address of target physical server and MAC Address in the arp cache stored in local physical server according to the IP address of target physical server.

Physical gateway (Gateway, GW): be responsible for the data retransmission between different VxLAN, according to stream table, VxLAN message encapsulated and decapsulation.

Virtual machine gateway: be configured on physical gateway, for the data retransmission of virtual machine.A physical gateway can configure multiple virtual machine gateway.

Virtual switch (Virtual switch, Vswtich): the same with physical switches, comprises the port of some, can provide the exchanges data between the equipment being connected to different port.

Software defined network controller (Software Defined Network controller, SDN controller): carry out software programming to network, can by creating the data retransmission of stream table control VTEP and VxLAN gateway.

In VxLAN network, when virtual machine moves to another physical server from a physical server, the migration information of virtual machine can be advertised to SDN controller by cloud management platform, is controlled the data retransmission direction of virtual machine by SDN controller.The embodiment of the present invention is described for the virtual machine (vm) migration in VxLAN network.

Embodiment 1

The embodiment of the present invention provides a kind of gateway control method based on virtual machine (vm) migration, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, as shown in Figure 1, when virtual machine migrates to the second physical server by the first physical server, the method comprises:

S101, SDN controller obtains the VTEP IP address of the IP address of the first virtual machine gateway, the MAC Address of the first virtual machine gateway and the second physical server.

Wherein, the first virtual machine gateway is the virtual machine gateway of the virtual machine be configured on the first physical gateway.First physical server is the physical server at the front place of virtual machine (vm) migration, and the second physical server is the physical server at place after virtual machine (vm) migration.A physical server can configure multiple virtual machine, and each virtual machine can use the part physical resource of physical server, as central processing unit, internal memory etc.

The first virtual machine gateway in the embodiment of the present invention is the virtual machine gateway of the virtual machine of the data retransmission for virtual machine that the physical gateway (the first physical gateway) of the physical server (the first physical server) at the front place of virtual machine (vm) migration fictionalizes.A physical gateway can configure multiple virtual machine gateway.

Optionally, in embodiments of the present invention, the mapping relations between virtual machine and virtual machine gateway for establish in advance, and can be stored in SDN controller.Certainly, SDN controller also when virtual machine needs to carry out data retransmission by virtual machine gateway, then can set up the mapping relations between virtual machine and virtual machine gateway, and the embodiment of the present invention does not limit this.

Wherein, SDN controller according to the MAC Address of the IP address of the mapping relations between the virtual machine gateway stored in SDN controller and virtual machine, virtual machine and virtual machine, can search the IP address of the first virtual machine gateway and the MAC Address of the first virtual machine gateway.

Optionally, the SDN controller VTEP IP address of virtual machine (vm) migration acquisition of information second physical server that can report according to cloud management platform.Certainly, SDN controller also can by sending request to obtain virtual machine (vm) migration information to cloud management platform, and the embodiment of the present invention does not limit this.Wherein, virtual machine (vm) migration information comprises the VTEP IP address of the IP address of virtual machine, the MAC Address of virtual machine and the second physical server.

S102, SDN controller is according to the VTEP IP address of the second physical server, and controlling the second physical gateway is that virtual machine configures the second virtual machine gateway on the second physical gateway.

Wherein, the second virtual machine gateway is the virtual machine gateway of the virtual machine of the data retransmission for virtual machine that the physical gateway (the second physical gateway) of the physical server (the second physical server) at place after virtual machine (vm) migration fictionalizes.The IP address of the second virtual machine gateway is identical with the IP address of the first virtual machine gateway, and the MAC Address of the second virtual machine gateway is identical with the MAC Address of the first virtual machine gateway.

Concrete, SDN controller can determine the VTEP IP address of the second physical gateway according to the VTEP IP address of the second physical server, and determine the second physical gateway according to the VTEP IP address of the second physical gateway, for virtual machine configures the second virtual machine gateway on the second physical gateway.

Optionally, the mapping relations between physical server and physical gateway can for establish in advance and be stored in SDN controller.Certainly, SDN controller also when virtual machine needs to carry out data retransmission by virtual machine gateway, then can set up the mapping relations between physical server and physical gateway, and the embodiment of the present invention does not limit this.Wherein, physical server and physical gateway can with different VTEP IP address designations.Each physical server has a unique VTEP IP address, and each physical gateway has a unique VTEP IP address.

Wherein, SDN controller according to the physical server stored in SDN controller and the mapping relations of physical gateway and the VTEP IP address of the second physical server, can search the VTEP IP address of the second physical gateway.

S103, SDN controller creates first-class list item, comprises the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of the second physical gateway, the IP address of the second virtual machine gateway, mapping relations between the MAC Address of the second virtual machine gateway and the IP address of virtual machine and virtual machine in first-class list item.

Wherein, first-class list item is stored in SDN controller.

S104, SDN controller sends first-class list item to the second physical gateway, to make the data retransmission strategy of the second physical gateway indicated by first-class list item for virtual machine forwarding data.

Wherein, the VxLAN ID of virtual machine is for identifying the network segment at virtual machine place.First-class list item have recorded the network segment at physical gateway, mapping relations between virtual machine gateway and virtual machine and virtual machine place.Second physical gateway, after virtual machine (vm) migration to the second physical server, can, according to the instruction of first-class list item, be virtual machine forwarding data by the second virtual machine gateway.

The gateway control method based on virtual machine (vm) migration that the embodiment of the present invention provides, the virtual machine gateway (the first virtual machine gateway) physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration being configured with the virtual machine that configure upper with the physical gateway (the first physical gateway) of the physical server (the first physical server) before virtual machine (vm) migration has the virtual machine gateway (the second virtual machine gateway) of identical IP address and MAC Address, ensure that the virtual machine gateway address (the IP address of virtual machine gateway and the MAC Address of virtual machine gateway) before and after virtual machine (vm) migration is constant, and, record physical gateway can be sent, stream list item to the second physical gateway of the mapping relations of virtual machine gateway and virtual machine, to make virtual machine when carrying out transfer of data, can directly by virtual machine gateway (the second virtual machine gateway of the upper configuration of the physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration, namely with the virtual machine gateway before virtual machine (vm) migration, there is identical IP address and the virtual machine gateway of MAC Address) carry out data retransmission, the virtual machine gateway (the first virtual machine gateway) of the upper configuration of physical gateway (the first physical gateway) of physical server (the first physical server) residing before not needing to travel back across virtual machine (vm) migration carries out data retransmission, the data traffic of transfer of data can be carried out between minimizing equipment, and then the bandwidth of carrying out between minimizing equipment shared by transfer of data, the waste of bandwidth resources can be reduced to a certain extent.

Embodiment 2

The embodiment of the present invention provides a kind of gateway control method based on virtual machine (vm) migration, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, as shown in Figure 2, when virtual machine migrates to the second physical server by the first physical server, the method comprises:

S201, SDN controller obtains virtual machine (vm) migration information, and virtual machine (vm) migration information comprises: the VTEP IP address of the IP address of virtual machine, the MAC Address of virtual machine and the second physical server.

Wherein, virtual machine migrates to the second physical server by the first physical server and comprises: manually by virtual machine (vm) migration to the second physical server; Virtual machine is automatically migrated to the second physical server.Virtual machine Autonomic Migration Framework needs the support of cloud management platform.The migration information of virtual machine can report SDN by cloud management platform, also can be sent request to cloud management platform by SDN controller, and to obtain virtual machine (vm) migration information, the embodiment of the present invention does not limit this.Second physical server is the physical server at place after virtual machine (vm) migration, can unique identification physical server with VTEP IP address.

The IP address of S202, SDN controller according to virtual machine and the MAC Address of virtual machine, determine the IP address of the first virtual machine gateway and the MAC Address of the first virtual machine gateway.

Wherein, the first virtual machine gateway is the virtual machine gateway of the virtual machine of the data retransmission for virtual machine that the physical gateway (the first physical gateway) of the physical server (the first physical server) at the front place of virtual machine (vm) migration fictionalizes.SDN controller determines that the method for the IP address of the first virtual machine gateway and the MAC Address of the first virtual machine gateway can with reference to the associated description in above-described embodiment, and the embodiment of the present invention repeats no more here.

S203, SDN controller determines the VTEP IP address of the second physical gateway according to the VTEP IP address of the second physical server.

Wherein, the second physical gateway is the physical gateway of the second physical server, and SDN controller determines that the method for the VTEP IP address of the second physical gateway can with reference to the associated description in above-described embodiment, and the embodiment of the present invention repeats no more here.

S204, SDN controller is according to the VTEP IP address of the second physical gateway, send the IP address of the first virtual machine gateway and MAC Address to the second physical gateway of the first virtual machine gateway, to make the second physical gateway according to the MAC Address of the IP address of the first virtual machine gateway and the first virtual machine gateway for virtual machine configures the second virtual machine gateway on the second physical gateway.

Wherein, the first virtual machine gateway is the virtual machine gateway of the virtual machine of the data retransmission for virtual machine that the physical gateway (the first physical gateway) of the physical server (the first physical server) at the front place of virtual machine (vm) migration fictionalizes.Second virtual machine gateway is the virtual machine gateway of the virtual machine of the data retransmission for virtual machine that the physical gateway (the second physical gateway) of the physical server (the second physical server) at place after virtual machine (vm) migration fictionalizes.The IP address of the second virtual machine gateway is identical with the IP address of the first virtual machine gateway, and the MAC Address of the second virtual machine gateway is identical with the MAC Address of the first virtual machine gateway.

S205, SDN controller is according to the VxLAN ID of the MAC Address determination virtual machine of the IP address of virtual machine and virtual machine.

Wherein, the VxLAN ID of virtual machine is for identifying the network segment at virtual machine place.The mapping relations of the VxLAN ID of virtual machine and virtual machine for establish in advance, and can be stored in SDN controller.SDN controller according to the MAC Address of the mapping relations of VxLAN ID of the virtual machine stored in SDN controller and virtual machine, the IP address of virtual machine and virtual machine, can search the VxLANID of virtual machine.

S206, SDN controller creates first-class list item, comprises the VxLAN ID of the VTEP IP address of the second physical gateway, the IP address of the second virtual machine gateway, mapping relations between the MAC Address of the second virtual machine gateway and the IP address of virtual machine and virtual machine in first-class list item.

Wherein, first-class list item is stored in SDN controller, and first-class list item have recorded the network segment at mapping relations between the physical gateway after virtual machine (vm) migration, the virtual machine gateway of the virtual machine after virtual machine (vm) migration and virtual machine and virtual machine place.After virtual machine (vm) migration to the second physical server, the second physical gateway can, according to the instruction of first-class list item, be virtual machine forwarding data.

S207, SDN controller sends first-class list item to the second physical gateway, to make the data retransmission strategy of the second physical gateway indicated by first-class list item for virtual machine forwarding data.

Second list item deleted by S208, SDN controller, comprises the VxLAN ID of the VTEP IP address of the first physical gateway, the IP address of the first virtual machine gateway, mapping relations between the MAC Address of the first virtual machine gateway and the IP address of virtual machine and virtual machine in second list item.

Wherein, second list item is stored in SDN controller, and second list item have recorded the network segment at mapping relations between the physical gateway before virtual machine (vm) migration, the virtual machine gateway of the virtual machine before virtual machine (vm) migration and virtual machine and virtual machine place.

By setting up first-class list item, delete second list item, virtual machine can be prevented when carrying out transfer of data, carry out data retransmission by the virtual machine gateway (the first virtual machine gateway) of the virtual machine before virtual machine (vm) migration again, and data retransmission can be carried out by the virtual machine gateway (the second virtual machine gateway) of the virtual machine after virtual machine (vm) migration.This process of being carried out data retransmission by the second virtual machine gateway, can be carried out the data traffic of transfer of data between minimizing equipment, and then carry out the bandwidth shared by transfer of data between minimizing equipment.

S209, SDN controller judges, in the network segment that the VxLAN ID of virtual machine identifies, whether to there are other virtual machines and use the first virtual machine gateway.

Wherein, in the network segment that SDN controller can identify at the VxLAN ID of virtual machine, according to the MAC Address of the virtual machine gateway stored in SDN controller and the mapping relations of virtual machine, the IP address of the first virtual machine gateway and the first virtual machine gateway, the IP address of searching the virtual machine gateway that whether there are other virtual machines is identical with the IP address of the first virtual machine gateway, and the MAC Address of virtual machine gateway is identical with the MAC Address of the first virtual machine gateway, and then judge that whether there are other virtual machines uses the first virtual machine gateway.Concrete, if in the network segment that the VxLAN ID of virtual machine identifies, the IP address that there is the virtual machine gateway of other virtual machines is identical with the IP address of the first virtual machine gateway, and the MAC Address of virtual machine gateway is identical with the MAC Address of the first virtual machine gateway, then can judge that there are other virtual machines uses the first virtual machine gateway; If in the network segment that the VxLAN ID of virtual machine identifies, the IP address that there is not the virtual machine gateway of other virtual machines is identical with the IP address of the first virtual machine gateway, and the MAC Address of virtual machine gateway is identical with the MAC Address of the first virtual machine gateway, then can judge that there are not other virtual machines uses the first virtual machine gateway.

If in the network segment that the VxLAN ID of S210 virtual machine identifies, there are not other virtual machines and use the first virtual machine gateway, then SDN controller controls the first physical gateway and deletes the first virtual machine gateway that the first physical gateway configures.

Wherein, if there are not other virtual machines to use the first virtual machine gateway, then delete the first virtual machine gateway that the first physical gateway configures, the consumption of physical gateway resource (such as, mac address table capacity, ARP capacity and route table items capacity) can be reduced.

It should be noted that, after the step completing above-mentioned virtual machine gateway configuration method, when virtual machine needs by gateway forwards data, the data of the second virtual machine gateway to virtual machine that SDN controller controls the second physical gateway configures forward.The embodiment of the present invention is described for the communication between virtual machine 1 and virtual machine 2.Wherein, virtual machine 1 is the virtual machine that migration occurs, and after the step completing above-mentioned virtual machine gateway configuration method, as shown in Figure 3, the communication process between virtual machine 1 and virtual machine 2 comprises:

S301, virtual machine 1 send the request of accesses virtual machine 1 to virtual switch 1, this request comprises the IP address of virtual machine 1, the IP address of virtual machine 2 and broadcast address.

Wherein, virtual machine 1 is when first time accesses virtual machine 2, and virtual machine 1 can not obtain the MAC Address of virtual machine 2, can replace the MAC Address of virtual machine 2 by broadcast address.Virtual machine 1 will obtain the MAC Address of virtual machine 2, can by sending ARP request, to obtain the MAC Address of virtual machine 2 to all virtual machines on network.

S302, virtual switch 1 send access request to SDN controller, and this request comprises the VTEP IP of physical server at the IP address of virtual machine 1, the IP address of virtual machine 2 and virtual machine 1 place.

Wherein, the information that virtual switch 1 can report according to the virtual machine 1 received, resolves the VTEP IP address obtaining the physical server at virtual machine 1 place.

S303, SDN controller checks the IP address of virtual machine 1 and the IP address of virtual machine 2, judges that whether virtual machine 1 and virtual machine 2 are at the same network segment.

If S304 virtual machine 1 and virtual machine 2 be not at the same network segment, then SDN controller is determined from the nearest physical gateway 1 of the physical location of virtual machine 1 according to the VTEP IP address of the physical server at virtual machine 1 place.

Wherein, SDN controller can according to the VTEP IP address of the physical server stored in SDN controller and the mapping relations of physical gateway and the physical server at virtual machine 1 place, search from the nearest physical gateway 1 of the physical location of virtual machine 1, this physical gateway 1 is the physical gateway (the second physical gateway namely in embodiment of the present invention foregoing description) of the physical server after virtual machine 1 moves, and the second virtual machine gateway that on this physical gateway 1, promising virtual machine 1 configures.Physical location is the shortest for characterizing forward-path recently.

S305, SDN controller issues about the VTEP IP address of the IP address of virtual machine 1, the IP address of virtual machine 2, the physical server at virtual machine 1 place and the stream list item of physical gateway 1 to virtual switch 1.

S306, virtual switch 1 record the mapping relations of the VTEP IP address of physical gateway 1 and the IP address of virtual machine 2.

S307, virtual machine 1 send the request of accesses virtual machine 2 again to virtual switch 1, this request comprises the IP address of virtual machine 1, the IP address of virtual machine 2 and broadcast address.

S308, virtual switch 1, according to the VTEP IP address of the physical server at IP address encapsulation virtual machine 1 place of virtual machine 2, form the message of virtual machine 1 accesses virtual machine 2.

The message of 1 access 2 is sent to physical gateway 1 by S309, virtual switch 1.

S310, physical gateway 1 are according to the VTEP IP address of the IP address of virtual machine 2 to the physical server at SDN controller request virtual machine 2 place.

Wherein, the mapping relations of virtual machine and physical server can for establish in advance, and store in SDN controller.SDN controller according to the virtual machine stored in SDN controller and the mapping relations of physical server and the IP address of virtual machine 2, can search the VTEP IP address of the physical server at virtual machine 2 place.

S311, SDN controller issues the VTEP IP address of physical server and the VxLAN ID of virtual machine 2 at virtual machine 2 place to physical gateway 1.

Wherein, the VTEP IP address of the physical server at virtual machine 2 place and the VxLANID of virtual machine 2 are used for physical gateway 1 packaging V xLAN message.

S312, physical gateway 1 packaging V xLAN message.

Wherein, the form of VxLAN message as shown in Figure 4, the basis of former ethernet frame increases VxLAN encapsulation.External object IP address is the VTEP IP address of the physical server at virtual machine 2 place; Outside source IP address is the VTEP IP address of the physical server at virtual machine 1 place; VxLANID is the VxLAN ID of virtual machine 2.External object MAC Address is the MAC Address of physical gateway 1.When virtual machine 2 and virtual machine 1 are under Same Physical gateway, external object MAC Address is identical with external source MAC Address; When virtual machine 2 and virtual machine 1 be not under Same Physical gateway, external object MAC Address is the MAC Address of the physical gateway of virtual machine 2, and external source MAC Address is the MAC Address of the physical gateway of virtual machine 1.

S313, physical gateway 1 send VxLAN message to virtual switch 2.

Wherein, physical gateway 1 sends VxLAN message by the second virtual machine gateway that physical gateway 1 configures for virtual machine 1 to virtual switch 2.

S314, the decapsulation of virtual switch 2 pairs of VxLAN messages, and send original message to virtual machine 2.

Wherein, original message is the message of the request of the accesses virtual machine 2 that virtual machine 1 sends to virtual switch 1.

Embodiment 3

The embodiment of the present invention provides a kind of SDN controller, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by the first physical server in the process of the second physical server, as shown in Figure 5, this SDN controller can comprise: acquiring unit 31, dispensing unit 32, creating unit 33 and transmitting element 34.

Acquiring unit 31, obtain the virtual channel terminal node VTEP IP address of the Internet protocol IP address of the first virtual machine gateway, the MAC address of the first virtual machine gateway and the second physical server, the first virtual machine gateway is the virtual machine gateway of the virtual machine be configured on the first physical gateway.

Dispensing unit 32, for the VTEP IP address of the second physical server obtained according to acquiring unit 31, controlling the second physical gateway is that virtual machine configures the second virtual machine gateway on the second physical gateway, the IP address of the second virtual machine gateway is identical with the IP address of the first virtual machine gateway that acquiring unit obtains, and the MAC Address of the second virtual machine gateway is identical with the MAC Address of the first virtual machine gateway that acquiring unit obtains.

Creating unit 33, for creating first-class list item, in first-class list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of the second physical gateway, the IP address of the second virtual machine gateway, mapping relations between the MAC Address of the second virtual machine gateway and the IP address of virtual machine and virtual machine.

Transmitting element 34, for sending first-class list item to the second physical gateway that creating unit 33 creates, to make the data retransmission strategy of the second physical gateway indicated by first-class list item for virtual machine forwarding data, the VxLAN ID of virtual machine is for identifying the network segment at virtual machine place.

Further, as shown in Figure 6, dispensing unit 32, can comprise: first determines subelement 321 and configuration subelement 322.

First determines subelement 321, for determining the VTEP IP address of the second physical gateway according to the VTEP IP address of the second physical server.

Configuration subelement 322, for determining the VTEP IP address of the second physical gateway that subelement 321 is determined according to first, controlling the second physical gateway is that virtual machine configures the second virtual machine gateway on the second physical gateway.

Further, dispensing unit 32, specifically for the VTEP IP address according to the second physical gateway, send the IP address of the first virtual machine gateway and MAC Address to the second physical gateway of the first virtual machine gateway, on the second physical gateway, configure the second virtual machine gateway to make the second physical gateway according to the MAC Address of the IP address of the first virtual machine gateway and the first virtual machine gateway.

Further, as shown in Figure 7, acquiring unit 31, can comprise: obtain subelement 311 and second and determine subelement 312.

Obtain subelement 311, for obtaining virtual machine (vm) migration information, virtual machine (vm) migration information comprises: the VTEP IP address of the IP address of virtual machine, the MAC Address of virtual machine and the second physical server.

Second determines subelement 312, for determining the IP address of the first virtual machine gateway and the MAC Address of the first virtual machine gateway according to the IP address of virtual machine and the MAC Address of virtual machine that obtain subelement 311 acquisition.

Further, as shown in Figure 8, the SDN controller in the embodiment of the present invention, can also comprise delete cells 35.

Delete cells 35, after creating first-class list item in creating unit 33, delete second list item, in second list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of the first physical gateway, the IP address of the first virtual machine gateway, mapping relations between the MAC Address of the first virtual machine gateway and the IP address of virtual machine and virtual machine.

Further, as shown in Figure 9, the SDN controller in the embodiment of the present invention, can also comprise determining unit 36.

Determining unit 36, before creating first-class list item in creating unit 33, after acquiring unit 31 obtains virtual machine (vm) migration information, according to the VxLAN ID of the IP address of virtual machine and the MAC Address determination virtual machine of virtual machine.

Further, as shown in Figure 10, the SDN controller in the embodiment of the present invention, can also comprise judging unit 37.

Judging unit 37, after creating first-class list item in creating unit 33, judges, in the network segment that the VxLAN ID of virtual machine identifies, whether to there are other virtual machines and use the first virtual machine gateway.

Delete cells 35, if also judge in the network segment that the VxLAN ID obtaining virtual machine identifies for judging unit 37, there are not other virtual machines and use the first virtual machine gateway, then control the first physical gateway and delete the first virtual machine gateway that the first physical gateway configures.

It should be noted that, in the SDN controller that the embodiment of the present invention provides, the specific descriptions of part functional module can corresponding content in reference method embodiment, and the present embodiment is no longer described in detail here.

The SDN controller that the embodiment of the present invention provides, the virtual machine gateway (the first virtual machine gateway) physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration being configured with the virtual machine that configure upper with the physical gateway (the first physical gateway) of the physical server (the first physical server) before virtual machine (vm) migration has the virtual machine gateway (the second virtual machine gateway) of identical IP address and MAC Address, ensure that the virtual machine gateway address (the IP address of virtual machine gateway and the MAC Address of virtual machine gateway) before and after virtual machine (vm) migration is constant, and, record physical gateway can be sent, stream list item to the second physical gateway of the mapping relations of virtual machine gateway and virtual machine, to make virtual machine when carrying out transfer of data, can directly by virtual machine gateway (the second virtual machine gateway of the upper configuration of the physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration, namely with the virtual machine gateway before virtual machine (vm) migration, there is identical IP address and the virtual machine gateway of MAC Address) carry out data retransmission, the virtual machine gateway (the first virtual machine gateway) of the upper configuration of physical gateway (the first physical gateway) of physical server (the first physical server) residing before not needing to travel back across virtual machine (vm) migration carries out data retransmission, the data traffic of transfer of data can be carried out between minimizing equipment, and then the bandwidth of carrying out between minimizing equipment shared by transfer of data, the waste of bandwidth resources can be reduced to a certain extent.

Embodiment 4

The embodiment of the present invention provides a kind of SDN controller, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by the first physical server in the process of the second physical server, as shown in figure 11, this SDN controller can comprise: receiver 41, processor 42, transmitter 43 and memory 44.

Receiver 41, for sink virtual machine migration information, to obtain the virtual channel terminal node VTEP IP address of the Internet protocol IP address of the first virtual machine gateway, the MAC address of the first virtual machine gateway and the second physical server, the first virtual machine gateway is the virtual machine gateway of the virtual machine be configured on the first physical gateway; Virtual machine (vm) migration information comprises: the VTEP IP address of the IP address of virtual machine, the MAC Address of virtual machine and the second physical server.

Processor 42, for the VTEP IP address of the second physical server obtained according to receiver 41, controlling the second physical gateway is that virtual machine configures the second virtual machine gateway on the second physical gateway, the IP address of the second virtual machine gateway is identical with the IP address of the first virtual machine gateway that acquiring unit obtains, and the MAC Address of the second virtual machine gateway is identical with the MAC Address of the first virtual machine gateway that acquiring unit obtains; Also for creating first-class list item, in first-class list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of the second physical gateway, the IP address of the second virtual machine gateway, mapping relations between the MAC Address of the second virtual machine gateway and the IP address of virtual machine and virtual machine.

Transmitter 43, for first-class list item to the second physical gateway that sending processor 42 creates, to make the data retransmission strategy of the second physical gateway indicated by first-class list item for virtual machine forwarding data, the VxLAN ID of virtual machine is for identifying the network segment at virtual machine place.

Memory 44, for storing the data that receiver 41 and processor 42 obtain, as the VTEP IP address of the IP address of the first virtual machine gateway, the MAC Address of the first virtual machine gateway and the second physical server, the IP address of the second virtual machine gateway, the MAC Address of the second virtual machine gateway and first-class list item etc.

Wherein, receiver 41 can for communication interface when SDN controller communicates with other equipment with transmitter 43.Receiver 41, processor 42, transmitter 43 and memory 44 are connected by bus and complete mutual communication.

Wherein, bus can be industry standard architecture (Industry Standard Architecture, ISA) bus, peripheral component interconnect (Peripheral Component Interconnect, PCI) bus or extended industry-standard architecture (Extended Industry Standard Architecture, EISA) bus etc.This bus can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a thick line in Figure 10, but not representing the bus only having a bus or a type.

It should be noted that, in embodiments of the present invention, described processor 42 can be the control centre of described SDN controller, as central processing unit (Central Processing Unit, CPU), this control centre can utilize the various piece of various interface and the whole described SDN controller of connection.This processor 42 can by integrated circuit (Integrated Circuit, or specific integrated circuit (Application Specific Integrated Circuit IC), ASIC) composition (such as, this processor 42 can be made up of the IC of single encapsulation), also can be made up of the encapsulation IC connecting many identical functions or difference in functionality.For example, processor 42 only can comprise CPU, also can be CPU, image processor (Graphic Processing Unit, the combination of the control chip (such as baseband chip) GPU), in digital signal processor (Digital Signal Processor, DSP) and communication unit.In embodiments of the present invention, CPU can be single arithmetic core, also can comprise multioperation core.

Further, processor 42, also for determining the VTEP IP address of the second physical gateway according to the VTEP IP address of the second physical server; According to the VTEP IP address of the second physical gateway, controlling the second physical gateway is that virtual machine configures the second virtual machine gateway on the second physical gateway.

Further, processor 42, also for the VTEP IP address according to the second physical gateway, send the IP address of the first virtual machine gateway and MAC Address to the second physical gateway of the first virtual machine gateway, on the second physical gateway, configure the second virtual machine gateway to make the second physical gateway according to the MAC Address of the IP address of the first virtual machine gateway and the first virtual machine gateway.

Further, processor 42, also determines the IP address of the first virtual machine gateway and the MAC Address of the first virtual machine gateway for the IP address of virtual machine that obtains according to receiver 41 and the MAC Address of virtual machine.

Further, processor 42, also for after the first-class list item of establishment, delete second list item, in second list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of the first physical gateway, the IP address of the first virtual machine gateway, mapping relations between the MAC Address of the first virtual machine gateway and the IP address of virtual machine and virtual machine.

Further, processor 42, also for before the first-class list item of establishment, after receiver 41 obtains virtual machine (vm) migration information, according to the VxLAN ID of the IP address of virtual machine and the MAC Address determination virtual machine of virtual machine.

Further, processor 42, also for after the first-class list item of establishment, judges, in the network segment that the VxLAN ID of virtual machine identifies, whether to there are other virtual machines and use the first virtual machine gateway; If in the network segment that the VxLAN ID of virtual machine identifies, there are not other virtual machines and use the first virtual machine gateway, then control the first physical gateway and delete the first virtual machine gateway that the first physical gateway configures.

Embodiment 5

The embodiment of the present invention provides a kind of gateway control system based on virtual machine (vm) migration, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by the first physical server in the process of the second physical server, as shown in figure 12, this system can comprise: SDN control 51, virtual machine 52, first physical server 53, first physical gateway 54, first virtual machine gateway 55, second physical server 56, second physical gateway 57 and the second virtual machine gateway 58.

First virtual machine gateway 55 is for being configured in the virtual machine gateway of the virtual machine 52 on the first physical gateway 54; Second virtual machine gateway 58 is for being configured in the virtual machine gateway of the virtual machine 52 on the second physical gateway 57.

SDN controls 51, for performing the gateway control method based on virtual machine (vm) migration according to any one of claim 1-7.

Second physical gateway 57, for the control controlling 51 according to SDN, the second physical gateway 57 configures the second virtual machine gateway 58.

Wherein, the IP address of the second virtual machine gateway 58 is identical with the IP address of the first virtual machine gateway 55, and the MAC Address of the second virtual machine gateway 58 is identical with the MAC Address of the first virtual machine gateway 55.

The gateway control system based on virtual machine (vm) migration that the embodiment of the present invention provides, the virtual machine gateway (the first virtual machine gateway) physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration being configured with the virtual machine that configure upper with the physical gateway (the first physical gateway) of the physical server (the first physical server) before virtual machine (vm) migration has the virtual machine gateway (the second virtual machine gateway) of identical IP address and MAC Address, ensure that the virtual machine gateway address (the IP address of virtual machine gateway and the MAC Address of virtual machine gateway) before and after virtual machine (vm) migration is constant, and, record physical gateway can be sent, stream list item to the second physical gateway of the mapping relations of virtual machine gateway and virtual machine, to make virtual machine when carrying out transfer of data, can directly by virtual machine gateway (the second virtual machine gateway of the upper configuration of the physical gateway (the second physical gateway) of the physical server (the second physical server) after virtual machine (vm) migration, namely with the virtual machine gateway before virtual machine (vm) migration, there is identical IP address and the virtual machine gateway of MAC Address) carry out data retransmission, the virtual machine gateway (the first virtual machine gateway) of the upper configuration of physical gateway (the first physical gateway) of physical server (the first physical server) residing before not needing to travel back across virtual machine (vm) migration carries out data retransmission, the data traffic of transfer of data can be carried out between minimizing equipment, and then the bandwidth of carrying out between minimizing equipment shared by transfer of data, the waste of bandwidth resources can be reduced to a certain extent.

Through the above description of the embodiments, those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, the internal structure by device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.

If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims

1. the gateway control method based on virtual machine (vm) migration, it is characterized in that, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, when virtual machine migrates to described second physical server by described first physical server, described method comprises:

2. method according to claim 1, it is characterized in that, described SDN controller is according to the VTEP IP address of described second physical server, and controlling described second physical gateway is that described virtual machine configures the second virtual machine gateway on described second physical gateway, comprising:

3. method according to claim 1 and 2, it is characterized in that, described SDN controller is according to the VTEP IP address of described second physical gateway, and controlling described second physical gateway is that described virtual machine configures described second virtual machine gateway on described second physical gateway, comprising:

4. method according to claim 1 and 2, it is characterized in that, described software defined network SDN controller obtains the virtual channel terminal node VTEP IP address of the Internet protocol IP address of the first virtual machine gateway, the MAC address of described first virtual machine gateway and the second physical server, comprising:

5. the method according to any one of claim 1-4, is characterized in that, after described SDN controller creates first-class list item, described method also comprises:

6. method according to claim 4, is characterized in that, before described SDN controller creates first-class list item, after described SDN controller obtains virtual machine (vm) migration information, described method also comprises:

7. method according to claim 6, is characterized in that, after the first-class list item of described establishment, described method also comprises:

8. a software defined network SDN controller, it is characterized in that, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by described first physical server in the process of described second physical server, described SDN controller comprises:

9. SDN controller according to claim 8, is characterized in that, described dispensing unit, comprising:

10. SDN controller according to claim 8 or claim 9, it is characterized in that, described dispensing unit, specifically for the VTEP IP address according to described second physical gateway, send the IP address of described first virtual machine gateway and MAC Address extremely described second physical gateway of described first virtual machine gateway, on described second physical gateway, configure described second virtual machine gateway to make described second physical gateway according to the MAC Address of the IP address of described first virtual machine gateway and described first virtual machine gateway.

11. SDN controllers according to claim 8 or claim 9, it is characterized in that, described acquiring unit, comprising:

12. SDN controllers according to Claim 8 according to any one of-11, is characterized in that, also comprise:

Delete cells, after creating the first-class list item of described establishment in described creating unit, delete second list item, in described second list item, comprise the expansion Virtual Local Area Network VxLAN ID of the VTEP IP address of described first physical gateway, the IP address of the first virtual machine gateway, mapping relations between the MAC Address of described first virtual machine gateway and the IP address of described virtual machine and described virtual machine.

13. SDN controllers according to claim 11, is characterized in that, also comprise:

14. SDN controllers according to claim 10, is characterized in that, also comprise:

15. 1 kinds of gateway control system based on virtual machine (vm) migration, it is characterized in that, first physical gateway is the physical gateway of the first physical server, second physical gateway is the physical gateway of the second physical server, be applied to virtual machine to be migrated to by described first physical server in the process of described second physical server, described system comprises: software defined network SDN controller, described virtual machine, described first physical server, described first physical gateway, first virtual machine gateway, described second physical server, described second physical gateway and the second virtual machine gateway,