CN107124287A - A kind of virtual network service method for quality control and device - Google Patents
A kind of virtual network service method for quality control and device Download PDFInfo
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- CN107124287A CN107124287A CN201610101171.2A CN201610101171A CN107124287A CN 107124287 A CN107124287 A CN 107124287A CN 201610101171 A CN201610101171 A CN 201610101171A CN 107124287 A CN107124287 A CN 107124287A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
- H04L43/55—Testing of service level quality, e.g. simulating service usage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/302—Route determination based on requested QoS
Abstract
The invention discloses a kind of virtual network service method for quality control and device, including：The quality of service request of user's input is obtained, the quality of server request includes virtual network information；The quality of service request is converted into corresponding strategy；Current state lower network topology information is obtained, the optimal path met between the tactful node is calculated according to the network topology information；When with optimal path, build virtual network and the virtual network is mapped into physical network；The resource information of the physical network is monitored, when the physical network breaks down, backup path is calculated according to current network state, so that the virtual network normal work.
Description
Technical field
The present invention relates to the service quality technology in virtual network field, more particularly to a kind of virtual network service
Method for quality control and device.
Background technology
Software defined network (SDN, Software Defined Network) is that a kind of new software can be compiled
The journey network architecture.The main distinction of SDN and traditional IP framework be the control logic of the network equipment with
Data forwarding function is separated；Control logic is unified by SDN controller centralized managements, and the network equipment only possesses number
According to forwarding capability；SDN controllers provide open programmable interface to upper layer application.SDN controllers
Realized with interacting for the network equipment by SDN control protocols, the SDN control protocols generally used at present are
OpenFlow agreements.SDN frameworks logical view is as shown in figure 1, SDN frameworks can be divided into three layers, under
It is upwards infrastructure layer, key-course, application layer successively.
Virtual network based on SDN, is considered as the application program in application layer, is responsible for providing multi-tenant void
Intend network.Multi-tenant virtual network ensure that the flow between tenant is isolated, and the quality of service request of tenant
It is left to be desired.
In existing scheme, discussion is how to build Virtual Networking System based on SDN frameworks.The system bag
Network topological information detecting module is included to be responsible for collecting current SDN topology information.Applied in network performance test
Module be responsible for the disposal ability information of each node in statistics collection current network, link information including bandwidth,
The information such as time delay.Network resource integration module is responsible for network topological information detecting module and network performance survey
Information in die trial block is presented to user in the form of topology diagram, and wherein topology diagram is a node
The complicated weighted graph of weight is all carried with link.User's dummy node selecting module refers to user according to visualization
Internet resources interface cohesion self-demand selection logical node and link.Virtual network management module is received
The node and link information of user's selection, pass through network mapping module most logical node, link information at last
It is mapped in physical node, physical link, and preserves the virtual network information and corresponding Physical Network of the user
Network information.Several modules in such scheme may finally be realized by SDN controllers, but the program is strong
What is adjusted is that user selects node, link establishment virtual network according to Internet resources visualization interface oneself, if not
It is different to the performance requirement of link with tenant, if any it is high to bandwidth requirement, what is had is high to delay requirement, that
Nodal information, the link information of Internet resources visualization interface feedback are not necessarily accurate for user.
In addition the program lacks the virtual network service Quality Ensuring Mechanism built to user, i.e., once belonging to user's
Physical network nodes are broken down, and the virtual network of user can not be used normally.
In summary, built based on SDN in virtual network scheme, the shortcoming of prior art is as follows：User needs
Manually select dummy node and build virtual network, that is, the computational methods for representing Internet resources topological diagram are fixed
, but different tenant be to the performance requirement of link it is unfixed, if any high, pair having to bandwidth requirement
Delay requirement is high, therefore fixed calculation can not meet requirement of the user to link performance.Therefore system
The network topology structure weighted graph of feedback may not meet performance requirement of the tenant to link.In addition, prior art
It cannot be guaranteed that the QoS requirement of user in scheme, once the physical node or link of distributing to user occur
During failure, the virtual network service of user just can not be used normally.
The content of the invention
In order to solve the above technical problems, the embodiments of the invention provide a kind of virtual network service quality management side
Method and device.
Virtual network service method for quality control provided in an embodiment of the present invention, including：
The quality of service request of user's input is obtained, the quality of server request includes virtual network information；
The quality of service request is converted into corresponding strategy；
Current state lower network topology information is obtained, is calculated and met according to the network topology information
Optimal path between the tactful node；
When with optimal path, build virtual network and the virtual network is mapped into physical network；
The resource information of the physical network is monitored, when the physical network breaks down, according to current net
Network state computation backup path, so that the virtual network normal work.
In the embodiment of the present invention, methods described also includes：
The virtual network is mapped to after physical network, by corresponding map information with flow table form send to
Interchanger, to be used as forwarding rule.
In the embodiment of the present invention, the virtual network information includes：The positional information of node, disposal ability letter
Cease, to the performance requirement information of link in network.
In the embodiment of the present invention, methods described also includes：
When there is no optimal path, return for showing that the prompt message of virtual network can not be built.
In the embodiment of the present invention, the resource information of the monitoring physical network, including：
Monitor at least following information of the physical network：Node state, Link State.
Virtual network service quality management device provided in an embodiment of the present invention, including：
Management module, the quality of service request for obtaining user's input, the quality of server request includes
Virtual network information；The quality of service request is converted into corresponding strategy；
Control module, for obtaining current state lower network topology information, according to the network topology knot
Structure information calculates the optimal path met between the tactful node；When with optimal path, build virtual
The virtual network is simultaneously mapped to physical network by network；
The management module, is additionally operable to monitor the resource information of the physical network, when physical network hair
During raw failure, backup path is calculated according to current network state, so that the virtual network normal work.
In the embodiment of the present invention, described device also includes：Switching Module；
The control module, is additionally operable to map to the virtual network after physical network, will map accordingly
Information is sent to the Switching Module in flow table form, to be used as forwarding rule.
In the embodiment of the present invention, the virtual network information includes：The positional information of node, disposal ability letter
Cease, to the performance requirement information of link in network.
In the embodiment of the present invention, the control module is additionally operable to, when not having optimal path, return for table
It is bright to build the prompt message of virtual network.
In the embodiment of the present invention, the management module is additionally operable to monitor at least following letter of the physical network
Breath：Node state, Link State.
In the technical scheme of the embodiment of the present invention, the quality of service request of user's input, the server are obtained
Quality request includes virtual network information；The quality of service request is converted into corresponding strategy；Obtain and work as
Preceding state lower network topology information, calculates according to the network topology information and meets described tactful
Optimal path between node；When with optimal path, build virtual network and map the virtual network
To physical network；The resource information of the physical network is monitored, when the physical network breaks down, root
Backup path is calculated according to current network state, so that the virtual network normal work.It can be seen that, the present invention is real
Corresponding virtual network can be built for different user to the different performance requirement of link by applying example, and user only needs
The quality of service request for building virtual network is provided, just being capable of automatic decision current state lower network topological structure
Quality of service request can be met, it is automatic to build virtual network if can meet, and void can be monitored in real time
Intend the state of the corresponding physical network of network, if there is failure, corresponding fault diagnosis measure can be started.
Brief description of the drawings
Fig. 1 is SDN framework logical views；
Fig. 2 is the schematic flow sheet of the virtual network service method for quality control of the embodiment of the present invention；
Fig. 3 is the structure composition schematic diagram of the virtual network service quality management device of the embodiment of the present invention one；
Fig. 4 is the structure composition schematic diagram of the virtual network service quality management device of the embodiment of the present invention two.
Embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings
Realization to the embodiment of the present invention is described in detail, appended accompanying drawing purposes of discussion only for reference, is not used for
Limit the embodiment of the present invention.
The embodiment of the present invention proposes a kind of virtual network service method for quality control and device, in real network
In the case of resource is available, different user can set up the virtual network for meeting self-demand by this method.And
And, receive tenant and set up the request of virtual network viability for it, ensure that the virtual network of tenant
Service quality.
The technical scheme of the embodiment of the present invention, virtual network service quality management device can manage multiple virtual
Tenant network, and provide QoS requirement, and the corresponding physics of monitoring virtual network in real time to each tenant
Network state.Tenant need to only provide quality of service request, and the device can calculate the resource met automatically simultaneously
Set up virtual network.
The technical side of the embodiment of the present invention is based on SDN technologies, it is adaptable to SDN.
Fig. 2 is the schematic flow sheet of the virtual network service method for quality control of the embodiment of the present invention, such as Fig. 2
Shown, the virtual network service method for quality control comprises the following steps：
Step 201：The quality of service request of user's input is obtained, the quality of server request includes virtual
The network information；The quality of service request is converted into corresponding strategy.
In the embodiment of the present invention, virtual network service quality management device includes three big module, is respectively：
Management module, control module, Switching Module；Wherein, management module includes：Policy validation module, data
Memory module, tenant's flow monitoring module and fault processing module；Control module includes：Access Control mould
Block, path calculation module, Information Statistics module, virtual network build module；Switching Module is by multiple openflow
Group of switches into.
The interface that user is provided by policy validation module inputs quality of service request, specifically, needed for input
Virtual network information, here, the virtual network information includes：Positional information, the disposal ability of node
Information, the performance requirement information to link in network.Correspondingly, policy validation module obtains user's input
Quality of service request.
Then, the quality of service request of user is converted into the plan that control module can be parsed by policy validation module
Slightly, it is handed down to Access Control module.Here, control module can be SDN controllers.
Step 202：Current state lower network topology information is obtained, is believed according to the network topology structure
Breath calculates the optimal path met between the tactful node.
Specifically, Access Control module is received after the strategy that policy validation module is sent, and calls router-level topology mould
Optimal path between block, calculate node.
Here, when Access Control module calls routing calculation module, routing calculation module is according to the void of tenant
Intend the network information, reacquire current state lower network topology information (i.e. network topology structure figure), and
The optimal path for meeting strategy (i.e. user link requirement) between calculate node.
Step 203：When with optimal path, build virtual network and the virtual network is mapped into thing
Manage network.
Above-mentioned steps 202 have calculated optimal path, and Access Control module will also call virtual network to build mould
The interface that block is provided, builds virtual network, and the virtual network is mapped into physical network；By virtual net
Network information and physical network information feed back to data memory module.Data memory module records each user's
Physical network information and virtual network information.
In the embodiment of the present invention, when there is no optimal path, return for showing that virtual network can not be built
Prompt message.
In the embodiment of the present invention, the virtual network is mapped to after physical network, by corresponding map information
Sent in flow table form to interchanger, to be used as forwarding rule.
Step 204：The resource information of the physical network is monitored, when the physical network breaks down,
Backup path is calculated according to current network state, so that the virtual network normal work.
Specifically, at least following information of the physical network is monitored：Node state, Link State.Tenant
Flow monitoring module, is responsible for implementing the resource information of the physical network of Monitoring Data memory module record, once
Break down, then trigger fault processing module.Fault processing module is received after triggering, according to current network shape
State calculates backup path, so that the virtual network normal work.Once in this way, some openflow of bottom
Switch ports themselves break down, and fault processing module will calculate backup path according to current network state and cause use
The virtual network at family is unaffected.
Fig. 3 is the structure composition schematic diagram of the virtual network service quality management device of the embodiment of the present invention one,
As shown in figure 3, described device includes：
Management module 31, the quality of service request for obtaining user's input, the quality of server request bag
Include virtual network information；The quality of service request is converted into corresponding strategy；
Control module 32, for obtaining current state lower network topology information, according to the network topology
Structural information calculates the optimal path met between the tactful node；When with optimal path, build empty
Intend network and the virtual network is mapped into physical network；
The management module 31, is additionally operable to monitor the resource information of the physical network, when the physical network
When breaking down, backup path is calculated according to current network state, so that the virtual network normal work.
Described device also includes：Switching Module 33；
The control module 32, is additionally operable to map to the virtual network after physical network, will reflect accordingly
Penetrate information to send to the Switching Module 33 in flow table form, to be used as forwarding rule.
The virtual network information includes：The positional information of node, disposal ability information, to link in network
Performance requirement information.
The control module 32, is additionally operable to when not having optimal path, returns for showing not building virtually
The prompt message of network.
The management module 31, is additionally operable to monitor at least following information of the physical network：Node state,
Link State.
It will be appreciated by those skilled in the art that each in virtual network service quality management device shown in Fig. 3
Module realizes that function can refer to the associated description of aforementioned virtual network service quality management method and understand.Figure
The function of each unit in virtual network service quality management device shown in 3 can be by running on processor
Program and realize, can also be realized by specific logic circuit.
Fig. 4 is the structure composition schematic diagram of the virtual network service quality management device of the embodiment of the present invention two
Such as, as shown in figure 4, described device includes：Management module 41, control module 42, forwarding module 43.
1st, management module 41：Including policy validation module 411, data memory module 412, tenant's flow prison
Survey module 413 and fault processing module 414.Management module 41 receives the quality of service request of user, and
Can the Access Control module 421 that quality of service request is sent into control module 42 judge provide as the tenant
Service.Once virtual network is set up, it is necessary to be monitored in real time to tenant network resource for tenant, it is ensured that
Viability is provided for tenant, tenant's service quality is met.
1) policy validation module 411：The module receives requirement of the user to virtual network in the form of interface,
Including virtual network scale, node processing power, Link State performance requirement, and these requirements are converted into
Control module 42 it will be appreciated that strategy, be handed down to the Access Control module 421 in control module 42, lead to
Can the calculating of Access Control module 421 be crossed receive the request of user., will if the request of user can be received
The virtual network information of user feeds back in visual form user, if can not receive the request of user,
Refuse the request of user.
2) data memory module 412：The module is used to store the virtual network information of user and mapped therewith
Physical network resource information.
3) tenant's flow monitoring module 413：The physical network resource information that the module monitors have been used, including
Node state, Link State, once break down issues fault processing module 414 by fault message.
4) fault processing module 414：When receiving fault message, the node or link category broken down is judged
In which tenant, start backup path.
2nd, control module 42 is mainly realized by SDN controllers, including：Access Control module 421,
Path calculation module 422, Information Statistics module 423, virtual network build module 424.
1) Access Control module 421：The module receives the request of the tenant in policy validation module 411,
Routing calculation module 422 is called, if optimal path can be calculated, the request of tenant is disclosure satisfy that, otherwise
The request of tenant can not be met.
Path calculation module 422：When receiving when calling of Access Control module 421, the module passes through information
The current full mesh topology structural information of acquisition of information in statistical module 423, including node processing power, link
Performance information, the requirement according to user to link performance is drawn out satisfactory full mesh topology figure, passed through
QoS routing algorithms calculate the optimal path between physical node.
3) Information Statistics module 423：The module is used to obtain full mesh topology information in real time, passes through performance test
Instrument obtains node processing power, the bandwidth of link, time delay, packet loss ability.
4) virtual network builds module 424：The module completes structure, isolation and the virtual net of virtual network
Mapping between network and physical network, and offer can application interface.
3rd, forwarding module 43：Be exactly by OpenFlow exchange mechanisms into data forwarding network, function includes：
The configuration of OpenFlow interchangers, OpenFlow interchangers are interacted with controller.
, can be in any combination in the case where not conflicting between technical scheme described in the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method and smart machine,
It can realize by another way.Apparatus embodiments described above are only schematical, for example,
The division of the unit, only a kind of division of logic function, can there is other division side when actually realizing
Formula, such as：Multiple units or component can be combined, or be desirably integrated into another system, or some features can
To ignore, or do not perform.In addition, the coupling or straight of shown or discussed each part each other
Connect coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of equipment or unit,
Can be electrical, machinery or other forms.
The above-mentioned unit illustrated as separating component can be or may not be it is physically separate, as
The part that unit is shown can be or may not be physical location, you can positioned at a place, also may be used
To be distributed on multiple NEs；Part or all of unit therein can be selected according to the actual needs
Realize the purpose of this embodiment scheme.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a second processing list
, can also two or more unit collection in member or each unit is individually as a unit
Into in a unit；Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ hard
Part adds the form of SFU software functional unit to realize.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the invention discloses technical scope in, can readily occur in
Change or replacement, should all be included within the scope of the present invention.
Claims (10)
1. a kind of virtual network service method for quality control, it is characterised in that methods described includes：
The quality of service request of user's input is obtained, the quality of server request includes virtual network information；
The quality of service request is converted into corresponding strategy；
Current state lower network topology information is obtained, is calculated and met according to the network topology information
Optimal path between the tactful node；
When with optimal path, build virtual network and the virtual network is mapped into physical network；
The resource information of the physical network is monitored, when the physical network breaks down, according to current net
Network state computation backup path, so that the virtual network normal work.
2. virtual network service method for quality control according to claim 1, it is characterised in that described
Method also includes：
The virtual network is mapped to after physical network, by corresponding map information with flow table form send to
Interchanger, to be used as forwarding rule.
3. virtual network service method for quality control according to claim 1, it is characterised in that described
Virtual network information includes：Positional information, disposal ability information, the performance to link in network of node are wanted
Seek information.
4. virtual network service method for quality control according to claim 1, it is characterised in that described
Method also includes：
When there is no optimal path, return for showing that the prompt message of virtual network can not be built.
5. the virtual network service method for quality control according to any one of Claims 1-4, its feature
It is, the resource information of the monitoring physical network, including：
Monitor at least following information of the physical network：Node state, Link State.
6. a kind of virtual network service quality management device, it is characterised in that described device includes：
Management module, the quality of service request for obtaining user's input, the quality of server request includes
Virtual network information；The quality of service request is converted into corresponding strategy；
Control module, for obtaining current state lower network topology information, according to the network topology knot
Structure information calculates the optimal path met between the tactful node；When with optimal path, build virtual
The virtual network is simultaneously mapped to physical network by network；
The management module, is additionally operable to monitor the resource information of the physical network, when physical network hair
During raw failure, backup path is calculated according to current network state, so that the virtual network normal work.
7. virtual network service quality management device according to claim 6, it is characterised in that described
Device also includes：Switching Module；
The control module, is additionally operable to map to the virtual network after physical network, will map accordingly
Information is sent to the Switching Module in flow table form, to be used as forwarding rule.
8. virtual network service quality management device according to claim 6, it is characterised in that described
Virtual network information includes：Positional information, disposal ability information, the performance to link in network of node are wanted
Seek information.
9. virtual network service quality management device according to claim 6, it is characterised in that described
Control module, is additionally operable to when not having optimal path, returns for showing that the prompting of virtual network can not be built
Information.
10. the virtual network service quality management device according to any one of claim 6 to 9, it is special
Levy and be, the management module is additionally operable to monitor at least following information of the physical network：Node state,
Link State.
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Application publication date: 20170901 |