CN104869058B - A kind of data message forwarding method and device - Google Patents
A kind of data message forwarding method and device Download PDFInfo
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- CN104869058B CN104869058B CN201510303127.5A CN201510303127A CN104869058B CN 104869058 B CN104869058 B CN 104869058B CN 201510303127 A CN201510303127 A CN 201510303127A CN 104869058 B CN104869058 B CN 104869058B
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Abstract
The present invention provides a kind of data message forwarding method and devices, when virtual switch receives data message, if there is no the flow tables for forwarding the data message, the flow table request for forwarding the data message is then sent to controller, and the controller is made to issue flow table according to the target MAC (Media Access Control) address of data message；When receiving the flow table that controller issues, the data message is forwarded according to the flow table；If virtual router receives the data message of virtual switch forwarding, the target MAC (Media Access Control) address of the data message is replaced with into the corresponding MAC Address of purpose IP address, source MAC replaces with the MAC Address of the corresponding gateway of purpose IP address；And it is forwarded according to the corresponding route table items of the purpose IP address of the data message.The technical solution can realize the forwarding of two, three layer data messages in the case where saving equipment cost.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of data message forwarding method and device.
Background technology
In internet economy highly developed today, network has become one of vital infrastructure of IT field.
It is required a high expenditure of energy due to virtual machine (VM) and container (Container) enormous amount especially for cloud computing computer room
Safeguard network stabilization.
Current network of computer room is run directly in mostly on conventional TCP/IP physical network frameworks, and this physical arrangement exists
It is very poor and also not high in O＆M efficiency in terms of topological flexibility.In order to improve the flexibility of network of computer room structure, network work(
(NFV), which can be virtualized, becomes one tide.Network virtualization refers to passing through computer x86 on the basis of computer room physical structure
The function of platform simulation L2, L3 equipment realizes the control of network data forwarding.
Invention content
In view of this, a kind of data message forwarding method of the application offer and device, it can be in the feelings for saving equipment cost
Under condition, the forwarding of two, three layer data messages is realized.
In order to solve the above technical problems, what the technical solution of the application was realized in：
A kind of data message forwarding method is applied to include the host in the system of host, management server and controller
On, the host includes：Virtual switch and virtual router, this method include：
When the virtual switch receives data message, if there is no the flow tables for forwarding the data message, to control
Device processed sends the flow table request for forwarding the data message, makes purpose media access control of the controller according to data message
MAC Address issues flow table；When receiving the flow table that controller issues, the data message is forwarded according to the flow table；
If the virtual router receives the data message of virtual switch forwarding, by the purpose of the data message
It is the corresponding MAC Address of purpose Internet protocol IP address that MAC Address, which is replaced, and source MAC replaces with purpose IP address correspondence
Gateway MAC Address；And it is forwarded according to the corresponding route table items of the purpose IP address of the data message.
A kind of data message forwarding device is applied to include the host in the system of host, management server and controller
On, which includes：Virtual switch unit and virtual router unit；
The virtual switch unit, when for receiving data message, if there is no the streams for forwarding the data message
Table then sends the flow table request for forwarding the data message to controller, makes purpose matchmaker of the controller according to data message
Body access control MAC addresses issue flow table；When receiving the flow table that controller issues, the datagram is forwarded according to the flow table
Text；
The virtual router unit will be described if the data message for receiving virtual switch unit forwards
It is the corresponding MAC Address of purpose Internet protocol IP address that the target MAC (Media Access Control) address of data message, which is replaced, and source MAC replaces with
The MAC Address of the corresponding gateway of purpose IP address；And turned according to the corresponding route table items of the purpose IP address of the data message
Hair.
As can be seen from the above technical solution, in the application by virtual in host, virtual router and virtual switch,
It allows VM directly to exchange data with virtual switch, realizes the forwarding of Layer 2 data message；Virtual road is set by virtual router
By realizing the forwarding of three layer data messages.By the technical solution, two, three can be realized in the case where saving equipment cost
The forwarding of layer data message.
Description of the drawings
Fig. 1 is system group network schematic diagram in the embodiment of the present application；
Fig. 2 is message transmitting method flow diagram in the embodiment of the present application；
Fig. 3 is same host inside same subnet data transmission schematic diagram in the embodiment of the present application；
Fig. 4 is same host inside different sub-network data transmission schematic diagram in the embodiment of the present application；
Fig. 5 is the data transmission schematic diagram between the VM for belonging to different sub-network in the embodiment of the present application on different hosts；
Fig. 6 is the data transmission schematic diagram between the VM for belonging to same subnet in the embodiment of the present application on different hosts；
Fig. 7 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and examples,
Technical scheme of the present invention is described in detail.
A kind of message transmitting method is provided in the embodiment of the present application, is applied to include host, management server and controller
System in.
It is system group network schematic diagram in the embodiment of the present application referring to Fig. 1, Fig. 1.
Controller in Fig. 1 can be OpenFlow controllers, be responsible for interacting OpenFlow with virtual switch and controlling referring to
It enables, when not being matched to the flow table of forwarding data packets on virtual switch, is sent to OpenFlow controllers and forward the number
According to the flow table of message.
The self-defined forwarding plan of subnet isolation information and administrator that OpenFlow controller caches are obtained from management server
Slightly；Based on MAC Address, the forwarding strategy of data packet is judged in L2 levels；Judge data packet according to administrator's custom instruction
Forwarding strategy；Timing reports controller operating status etc. to management server.
In Fig. 1 by taking two hosts (host) as an example, master agent is arranged in each host, is responsible for carrying out with management server
Interaction, establishes on host according to the instruction of management server and is arranged virtual switch and virtual flow-line.Main function packet
It includes：Host L2 data virtual switched environments are established, the associated controller of virtual switch is specified；Establish host virtual flow-line plan
Slightly；The L2 grades instruction that management server Push comes is received, virtual switch is applied to.Such as flow table is emptied, promote virtually to hand over
It changes planes and arrives controller again and pull forwarding strategy；The L3 grades instruction that management server Push comes is received, virtual router is set,
Network data flow is oriented to, for example, a certain VM/Container binds public network IP；Actively master is reported to management server
Machine Network status etc..
Host includes：Master agent, virtual switch, virtual router and VM.
Wherein, the relevant information that master agent is used to obtain by management server establishes virtual switch, virtual flow-line
Device and VM.
Virtual router is distributed virtual router, which also has gateway function, can know each VM
MAC Address and the corresponding gateways of each VM MAC Address.
VM specific implementation when, can be KVM, Xen, or Container, such as docker, it is specifically used which kind of
Realization is determined according to practical application.
Management server in Fig. 1 sends the server of management control instruction to master agent and controller.Responsible master
The function is wanted to include：Friendly access interface is provided for administrator, receives and is responsible for issuing the management control instruction of administrator；It is new
The virtual switch of addition selects suitable controller, provides load-balancing function；Routing forwarding Provisioning Policy is provided for host,
The strategy is mainly used for providing outlet routing in L3 levels for the network data flow of VM/Container；To OpenFlow controllers
The control strategy that push administrator additionally applies；In time by the exceptional state alarm of host and controller to operation maintenance personnel.
Below in conjunction with the accompanying drawings, the process that message transmissions are realized in the embodiment of the present application is described in detail.
It is message transmitting method flow diagram in the embodiment of the present application referring to Fig. 2, Fig. 2.The specific steps are：
Step 201, virtual switch is when receiving data message, if the flow table for forwarding the data message is not present,
The flow table request for forwarding the data message is then sent to controller, makes the controller according to the purpose MAC of data message
Location issues flow table；It receives the flow table that controller issues and the data message is forwarded according to flow table.
When controller receives the flow table request of the forwarding data packets of virtual switch transmission, it is first determined the datagram
Text whether be data message between same tenant transmission；
When determining the transmission of data message of the data message between same tenant, according to the source MAC of data message
Address and target MAC (Media Access Control) address determine the legitimacy of the data message, if legal, further according to the mesh of the data message
MAC Address determination be transmitted to virtual machine and be still transmitted to virtual router；Otherwise, it is determined that the virtual switch is made to abandon
The data message received.
When the transmission for determining data message of the data message between different tenants, it is determined that the virtual switch is made to lose
Abandon the data message received.
When target MAC (Media Access Control) address is the MAC Address of the VM on this host, going out in the flow table issued for the virtual switch
Interface is the interface that virtual switch is connected with purpose VM；
When target MAC (Media Access Control) address is the MAC Address of the VM on other hosts, in the flow table issued for the virtual switch
Outgoing interface is the interface that virtual switch is connected with other hosts；
When target MAC (Media Access Control) address is gateway MAC address, the outgoing interface in the flow table issued for the virtual switch is virtual
The interface that interchanger is connected with virtual router.
Therefore, when virtual switch receives the flow table that controller issues, the datagram received is forwarded according to flow table
Text；
When target MAC (Media Access Control) address is the MAC Address of the VM on this host, by the outgoing interface in the flow table by the number
It is transmitted to corresponding VM according to message；
It, will be described by the outgoing interface in the flow table when target MAC (Media Access Control) address is the MAC Address of the VM on other hosts
Data message forwarding gives other hosts；
It, can be by the interface by the data message forwarding when the target MAC (Media Access Control) address of data message is gateway MAC address
To virtual router.
In practical applications, when virtual machine obtains the MAC Address of purpose VM, with subnet VM obtain be VM reality
MAC Address, what different sub-network obtained is the corresponding gateway MAC address of VM, therefore, the target MAC (Media Access Control) address of the data message of transmission
For the MAC Address of the corresponding gateway of MAC Address or source MAC of purpose VM.
Step 202, virtual router is when receiving the data message of virtual switch forwarding, by the data message
Target MAC (Media Access Control) address replaces with the corresponding MAC Address of purpose IP address, and source MAC replaces with the corresponding gateway of purpose IP address
MAC Address；And it is forwarded according to the corresponding route table items of the purpose IP address of the data message.
The source MAC and target MAC (Media Access Control) address for the data message that virtual router sends virtual switch replace
It changes, replaced target MAC (Media Access Control) address is the MAC Address of purpose VM, the i.e. corresponding MAC Address of purpose IP address；Replaced source
MAC Address is the gateway MAC address of corresponding purpose VM, the i.e. MAC Address of the corresponding gateway of purpose IP address.
It is forwarded according to the corresponding route table items of the purpose IP address of the data message in this step, including：
When the corresponding VM of the purpose IP address of data message be this host on VM, then pass through going out in the route table items
Interface will replace the data message forwarding of source MAC and target MAC (Media Access Control) address to the virtual switch；
When the corresponding VM of the purpose IP address of data message be other hosts on VM, then by the route table items
Outgoing interface will replace the data message forwarding of source MAC and target MAC (Media Access Control) address to other hosts.
Below in conjunction with the accompanying drawings, it is the data message between same tenant with data message, and is legal datagram
For text, data-message transmission process is described in detail.
Referring to Fig. 3, Fig. 3 is same host inside same subnet data transmission schematic diagram in the embodiment of the present application.
The routing direction of arrow presentation data message in Fig. 3, in figure①It arrives②The transfer sequence of mark data message.
VM1 and VM2 belongs to the same subnet of same tenant, and when VM1 needs to send datagram to VM2, source MAC is VM1's
MAC Address MAC1, target MAC (Media Access Control) address are the MAC Address of VM2.
When virtual switch receives above-mentioned data message, if not being matched to corresponding flow table, ask to forward to controller
The flow table of the data message.
Controller knows the target MAC (Media Access Control) address of the data message by the information of each VM obtained from management server
For the MAC Address of the VM of the machine, then flow table is issued to virtual switch, the outgoing interface of the flow table is that (corresponding VM2 connects interface 1
Mouthful).
When virtual switch receives the flow table, the data message is sent to VM2 by the outgoing interface in flow table.
If virtual switch is matched to the flow table for forwarding the data message, the data message is directly forwarded.
Referring to Fig. 4, Fig. 4 is same host inside different sub-network data transmission schematic diagram in the embodiment of the present application.
The routing direction of arrow presentation data message in Fig. 4, in figure①To the transfer sequence of 4. mark data message.
VM1 and VM2 belongs to the different sub-network of same tenant, and when VM1 needs to send datagram to VM2, source MAC is VM1's
The corresponding gateway MAC address MAC10 of MAC Address MAC1, target MAC (Media Access Control) address VM1.
When virtual switch receives above-mentioned data message, if not being matched to corresponding flow table, ask to forward to controller
The flow table of the data message.
Controller by the information of each gateway of the configuration on each VM and virtual router that are obtained from management server,
Know that the target MAC (Media Access Control) address of the data message is the MAC Address MAC10 of the corresponding gateways of VM1, then issues stream to virtual switch
The outgoing interface of table, the flow table is interface 1 (interface of corresponding virtual router).
When virtual switch receives the flow table, the data message is sent to virtually by the outgoing interface in flow table
Router.
When virtual router receives the data message of virtual switch transmission, according to each master obtained from management server
The information and gateway information of each virtual machine on machine replace source MAC and target MAC (Media Access Control) address for the data message.
The target MAC (Media Access Control) address of treated data message is the MAC Address of VM2, and source MAC is VM2 corresponding virtual
The MAC Address 20 of gateway corresponding to machine.
And by treated, data message is sent to virtual switch by interface 2 according to the outgoing interface in route table items.
When virtual switch receives the data message of virtual router transmission, if not being matched to corresponding flow table, to
Controller sends the flow table request for forwarding the data message.
Controller is that virtual switch issues flow table according to the data message target MAC (Media Access Control) address MAC2, the flow table
Outgoing interface is interface 3.
Virtual switch receives the flow table, and the data message that virtual router is sent passes through the interface 3 in flow table
It is sent to VM2.
The source MAC for the data message that VM2 is received is the MAC Address of the corresponding gateways of VM2, and target MAC (Media Access Control) address is
The MAC Address of VM2, source IP address are the IP address of VM1, and purpose IP address is the IP address of VM2.
Referring to Fig. 5, Fig. 5 is the data transmission between the VM for belonging to different sub-network in the embodiment of the present application on different hosts
Schematic diagram.
The routing direction of arrow presentation data message in Fig. 5, in figure①It arrives⑦The transfer sequence of mark data message.
When VM2 sends datagram to VM3, the source IP address of data message is the IP address of VM2, and purpose IP address is the IP of VM3
Location；Source MAC is the MAC Address MAC2 of VM2, and target MAC (Media Access Control) address is the gateway MAC address MAC20 of VM2.
When virtual switch 1 receives above-mentioned data message, if not being matched to corresponding flow table, sends and turn to controller
The flow table request for sending out data message described.
Controller by the information of each gateway of the configuration on each VM and virtual router that are obtained from management server,
Know that the target MAC (Media Access Control) address of the data message is the MAC Address MAC20 of the corresponding gateways of VM2, then issues stream to virtual switch
The outgoing interface of table, the flow table is interface 1 (interface of corresponding virtual router).
When virtual switch 1 receives the flow table, the data message is sent to void by the outgoing interface in flow table
Quasi- router.
It is each according to what is obtained from management server when virtual router 1 receives the data message of virtual switch transmission
The information and gateway information of each virtual machine on host replace source MAC and target MAC (Media Access Control) address for the data message.
The target MAC (Media Access Control) address of treated data message is the MAC Address of VM3, and source MAC is VM3 corresponding virtual
The MAC Address 30 of gateway corresponding to machine.
And by treated, data message is sent by interface 2 according to the outgoing interface in route table items.In specific implementation,
It can be sent by the physical network card of host 1, and another host (host 2) is reached by physical switches.
When the virtual switch 2 of host 2 receives above-mentioned data message, if not being matched to corresponding flow table, to controller
Send the flow table request for forwarding the data message.
When controller receives the flow table request of the transmission of virtual switch 2, determined according to the target MAC (Media Access Control) address of data message
Forward the data message outgoing interface be interface 3, then issue outgoing interface be interface 3 flow table to virtual switch 2.
When virtual switch 2 receives the flow table, by the data message forwarding received to VM3.
The source IP address for the data message that VM3 is received is the IP address of VM2, and purpose IP address is the IP address of VM3, source
MAC Address is the MAC Address MAC30 of the corresponding gateways of VM3, and target MAC (Media Access Control) address is the MAC Address of VM3.
So far, the transmission of the data message of VM2 to VM3 is realized.
Referring to Fig. 6, Fig. 6 is the data transmission between the VM for belonging to same subnet in the embodiment of the present application on different hosts
Schematic diagram.
The routing direction of arrow presentation data message in Fig. 6, the transfer sequence for 1. arriving 6. mark data message in figure.
When VM2 sends datagram to VM3, the source IP address of data message is the IP address of VM2, and purpose IP address is the IP of VM3
Location；Source MAC is the MAC Address MAC2 of VM2, and target MAC (Media Access Control) address is the MAC Address of VM3.
When virtual switch 1 receives above-mentioned data message, if not being matched to corresponding flow table, ask to forward to controller
The flow table of the data message.
Controller determines that the data message is on different hosts by the information of each VM obtained from management server
The data message of same subnet then issues flow table to virtual switch, and the outgoing interface of the flow table is interface 1.
When virtual switch 1 receives the flow table, the data message is sent to master by the outgoing interface in flow table
Machine 2.
When virtual switch 2 on host 2 receives the flow table, if not being matched to corresponding flow table, sent out to controller
The flow table for forwarding the data message is sent to ask.
When controller receives the flow table request of the transmission of virtual switch 2, determined according to the target MAC (Media Access Control) address of data message
Forward the data message outgoing interface be interface 2, then issue outgoing interface be interface 2 flow table to virtual switch 2.
When virtual switch 2 receives above-mentioned flow table, by the data message forwarding received to VM3.
The source IP address for the data message that VM3 is received is the IP address of VM2, and purpose IP address is the IP address of VM3, source
MAC Address is the MAC Address of VM2, and target MAC (Media Access Control) address is the MAC Address of VM3.
So far, the transmission of the data message of VM2 to VM3 is realized.
In above-mentioned implementation, if VM/Container or host delay machine, do not interfere with whole network.When restoring or move
It can continue to obtain identical forwarding strategy from management server and OpenFlow controllers when shifting, continue to work normally.
If OpenFlow controller outages, virtual switch is by all data for process of directly letting pass according to default policy
Packet.In addition, in specific implementation, can also be controlled using controller cluster, it is exemplified above by taking a controller as an example；
Each controller is only in charge of a part of host in controller cluster, therefore some controller outage will not communicate whole network
It produces bigger effect.
Management server due to load and it is little, in comparison the possibility of delay machine is smaller.It, can be with but for reliability
A Standby server is configured by KeepAlive.Due to management server not reservoir host's machine Agent and controller,
Therefore any influence is not had to Agent and controller when a switchover occurs.
Based on same inventive concept, the application also proposes a kind of data message forwarding device, is applied to include host, pipe
It manages on the host in the system of server and controller.Referring to Fig. 7, Fig. 7 is to be applied to above-mentioned technology in the embodiment of the present application
Apparatus structure schematic diagram.The device includes：Virtual switch unit 701 and virtual router unit 702；
Virtual switch unit 701, when for receiving data message, if there is no the streams for forwarding the data message
Table then sends the flow table request for forwarding the data message to controller, makes purpose matchmaker of the controller according to data message
Body access control MAC addresses issue flow table；When receiving the flow table that controller issues, the datagram is forwarded according to the flow table
Text；
Virtual router unit 702, if the data message for receiving the forwarding of virtual switch unit 701, by institute
The target MAC (Media Access Control) address for stating data message is replaced as the corresponding MAC Address of purpose Internet protocol IP address, source MAC replacement
For the MAC Address of the corresponding gateway of purpose IP address；And according to the corresponding route table items of the purpose IP address of the data message
Forwarding.
Preferably,
Virtual switch unit 701, when being specifically used for forwarding the data message according to the flow table, as purpose MAC
When location is the MAC Address of the virtual machine VM on this host, the data message forwarding is given by the outgoing interface in the flow table
Corresponding VM；When target MAC (Media Access Control) address is the MAC Address of the VM on other hosts, by the outgoing interface in the flow table by institute
Data message forwarding is stated to other hosts；When target MAC (Media Access Control) address is the MAC Address of gateway, by the flow table
Outgoing interface is by the data message forwarding to virtual router.
Preferably,
Virtual router unit 702 is specifically used for the corresponding route table items of purpose IP address according to the data message
When forwarding, when the corresponding VM of the purpose IP address of data message be this host on VM, then pass through going out in the route table items
Interface will replace the data message forwarding of source MAC and target MAC (Media Access Control) address to virtual switch unit 701；Work as data message
The corresponding VM of purpose IP address be VM on other hosts, then by the outgoing interface in the route table items by replacing source MAC
The data message forwarding of address and target MAC (Media Access Control) address gives other hosts.
Preferably, the device further includes：Master agent unit 703；
Virtual switch is established and be arranged to master agent unit 703 for obtaining the configuration information in the management server
Machine unit 701 and virtual router unit 702.
The unit of above-described embodiment can be integrated in one, and can also be deployed separately；A unit is can be merged into, also may be used
To be further split into multiple subelements.
In conclusion the application by virtual in host, virtual router and virtual switch, allows VM and virtual switch
Machine directly exchanges data, realizes the forwarding of Layer 2 data message；Virtual flow-line is set by virtual router, realizes three layer datas
The forwarding of message.By the technical solution, turning for two, three layer data messages can be realized in the case where saving equipment cost
Hair.
Under the premise of not changing the physical network topology of existing computer room, the flexible control to network structure is realized,
Save network of computer room variable cost.
The x86 platforms of current generally existing are effectively utilized, realize the control of network data flow in the form of software.
The control ability to network data flow is enhanced by network controller, can be realized in many levels such as L2 and L3
To data distribution and filtering.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.
Claims (8)
1. a kind of data message forwarding method, be applied to include on the host in the system of host, management server and controller,
It is characterized in that, the host includes：Virtual switch and virtual router, this method include：
When the virtual switch receives data message, if there is no the flow tables for forwarding the data message, to controller
The flow table request for forwarding the data message is sent, purpose media access control MAC of the controller according to data message is made
Address issues flow table；When receiving the flow table that controller issues, the data message is forwarded according to the flow table；Wherein, the stream
Outgoing interface in table is determined by the controller according to the target MAC (Media Access Control) address of data message；
If the virtual router receives the data message of virtual switch forwarding, by the purpose MAC of the data message
It is the corresponding MAC Address of purpose Internet protocol IP address that address, which is replaced, and source MAC replaces with the corresponding net of purpose IP address
The MAC Address of pass；And it is forwarded according to the corresponding route table items of the purpose IP address of the data message.
2. according to the method described in claim 1, it is characterized in that, described forward the data message, packet according to the flow table
It includes：
It, will be described by the outgoing interface in the flow table when target MAC (Media Access Control) address is the MAC Address of the virtual machine VM on this host
Data message forwarding gives corresponding VM；
When target MAC (Media Access Control) address is the MAC Address of the VM on other hosts, by the outgoing interface in the flow table by the data
Message is transmitted to other hosts；
When target MAC (Media Access Control) address is the MAC Address of gateway, the data message forwarding is given by the outgoing interface in the flow table
Virtual router.
3. according to the method described in claim 1, it is characterized in that, described correspond to according to the purpose IP address of the data message
Route table items forwarding, including：
When the corresponding VM of the purpose IP address of data message be this host on VM, then pass through the outgoing interface in the route table items
The data message forwarding of source MAC and target MAC (Media Access Control) address will be replaced to the virtual switch；
When the corresponding VM of the purpose IP address of data message be other hosts on VM, then by going out to connect in the route table items
Mouth will replace the data message forwarding of source MAC and target MAC (Media Access Control) address to other hosts.
4. according to the method described in any one of claim 1-3, which is characterized in that the host further includes：Master agent；
The master agent obtains the configuration information in the management server, establishes and be arranged the virtual switch and virtual
Router.
5. a kind of data message forwarding device, be applied to include on the host in the system of host, management server and controller,
It is characterized in that, the device includes：Virtual switch unit and virtual router unit；
The virtual switch unit, when for receiving data message, if there is no the flow table for forwarding the data message,
The flow table request for forwarding the data message is sent to controller, makes purpose media interviews of the controller according to data message
Control MAC Address issues flow table；When receiving the flow table that controller issues, the data message is forwarded according to the flow table；Its
In, the outgoing interface in the flow table is determined by the controller according to the target MAC (Media Access Control) address of data message；
The virtual router unit will be described if the data message for receiving the virtual switch unit forwards
It is the corresponding MAC Address of purpose Internet protocol IP address that the target MAC (Media Access Control) address of data message, which is replaced, and source MAC replaces with
The MAC Address of the corresponding gateway of purpose IP address；And turned according to the corresponding route table items of the purpose IP address of the data message
Hair.
6. device according to claim 5, which is characterized in that
The virtual switch unit, when being specifically used for forwarding the data message according to the flow table, when target MAC (Media Access Control) address is
When the MAC Address of the virtual machine VM on this host, by the outgoing interface in the flow table by the data message forwarding to correspondence
VM；When target MAC (Media Access Control) address is the MAC Address of the VM on other hosts, by the outgoing interface in the flow table by the number
It is transmitted to other hosts according to message；When target MAC (Media Access Control) address is the MAC Address of gateway, by going out to connect in the flow table
Mouth is by the data message forwarding to virtual router.
7. device according to claim 5, which is characterized in that
The virtual router unit is specifically used for being forwarded according to the corresponding route table items of purpose IP address of the data message
When, when the corresponding VM of the purpose IP address of data message be this host on VM, then pass through the outgoing interface in the route table items
The data message forwarding of source MAC and target MAC (Media Access Control) address will be replaced to the virtual switch unit；When the mesh of data message
The corresponding VM of IP address be other hosts on VM, then source MAC will be replaced by the outgoing interface in the route table items
Other hosts are given with the data message forwarding of target MAC (Media Access Control) address.
8. according to the device described in any one of claim 5-7, which is characterized in that described device further includes：Master agent
Unit；
The virtual friendship is established and be arranged to the master agent unit for obtaining the configuration information in the management server
It changes planes unit and the virtual router unit.
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| CN105282058A (en) * | 2015-09-14 | 2016-01-27 | 中国联合网络通信集团有限公司 | Path configuration method and device |
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