CN108768890B - Multi-tenant resource multiplexing method and device in SDN network and controller - Google Patents
Multi-tenant resource multiplexing method and device in SDN network and controller Download PDFInfo
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Abstract
The embodiment of the application discloses a multi-tenant resource multiplexing method, a multi-tenant resource multiplexing device and a controller in an SDN network, wherein the method comprises the steps of selecting a first resource to be multiplexed from existing resources of the current network according to the resource creation requirement of a first tenant; creating a second resource according to the first resource, wherein the first resource and the second resource are the same in type, and the second resource is used for being allocated to the first tenant for use; and searching a virtual network element corresponding to the first resource, and adding the reference relation between the second resource and the virtual network element. By adopting the technical scheme provided by the embodiment of the application, after resources are multiplexed among tenants, the resources and the network elements are in a many-to-one relationship, and a plurality of tenants only need to go to the resource pool for applying once, so that the resource utilization rate is improved, and the user cost is greatly saved.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method, an apparatus, and a controller for multiplexing multi-tenant resources in an SDN network.
Background
SDN (Software Defined Networks) is a novel network architecture, and its design concept is to separate a control plane and a data forwarding plane of a network, so that a programmable control of underlying hardware is implemented through a Software platform in a centralized controller, and flexible network resource allocation as required is implemented.
In order to implement service isolation of different users, generally, an SDN controller performs tenant partition, and a tenant applies for a resource bearer service from a resource pool, for example, applies for a VFW resource to provide a firewall service, and applies for a VLB resource to provide a service responsible for balancing. Each resource applied by the tenant in the resource pool corresponds to a virtual network element with an independent function, and the resource applied by each tenant is shared by the tenant independently.
Disclosure of Invention
The embodiment of the application provides a multi-tenant resource multiplexing method, device and controller in an SDN network, and aims to solve the problems of resource waste and low utilization rate in the prior art.
In a first aspect, an embodiment of the present application provides a method for multiplexing multi-tenant resources in an SDN network, including:
according to the resource creation requirement of a first tenant, selecting a first resource to be multiplexed from existing resources of a current network;
creating a second resource according to the first resource, wherein the first resource and the second resource are the same in type, and the second resource is used for being allocated to the first tenant for use;
and searching a virtual network element corresponding to the first resource, and adding the reference relation between the second resource and the virtual network element.
Optionally, the first resource is a resource that satisfies the following condition among existing resources of the current network:
the resource type indicated by the resource creation requirement is the same, and the number of resources borne by the corresponding virtual network element is the least.
In a second aspect, an embodiment of the present application provides a method for multiplexing multi-tenant resources in an SDN network, including:
selecting a corresponding resource creation strategy according to the load-bearing state of the current network;
if the resource creation strategy is a resource multiplexing strategy, selecting a first resource to be multiplexed from the existing resources of the current network according to the resource creation requirement of a first tenant; creating a second resource according to the first resource, wherein the first resource and the second resource are the same in type, and the second resource is used for being allocated to the first tenant for use; searching a virtual network element corresponding to the first resource, and adding a reference relation between the second resource and the virtual network element;
if the resource creation strategy is a resource non-multiplexing strategy, applying for resources in a resource pool according to the resource creation requirement of the first tenant; if the application is successful, establishing corresponding resources and virtual network elements; and adding the reference relationship between the newly-built corresponding resources and the virtual network element, wherein the newly-built corresponding resources are used for being allocated to the first tenant for use.
Optionally, selecting a corresponding resource creation policy according to the bearer state of the current network includes:
if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is less than or equal to a preset threshold value, selecting a resource multiplexing strategy;
and if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is greater than a preset threshold value, selecting a resource non-multiplexing strategy.
In a third aspect, an embodiment of the present application provides a multi-tenant resource multiplexing device in an SDN network, including:
the resource selection module is used for selecting a first resource to be multiplexed from the existing resources of the current network according to the resource creation requirement of the first tenant;
a first creating module, configured to create a second resource according to the first resource, where the first resource and the second resource are of the same type, and the second resource is used for being allocated to the first tenant;
and the first adding module is used for searching the virtual network element corresponding to the first resource and adding the reference relation between the second resource and the virtual network element.
Optionally, the first resource is a resource that satisfies the following condition among existing resources of the current network:
the resource type indicated by the resource creation requirement is the same, and the number of resources borne by the corresponding virtual network element is the least.
In a fourth aspect, an embodiment of the present application provides a multi-tenant resource multiplexing apparatus in an SDN network, including:
the strategy selection module is used for selecting a corresponding resource creation strategy according to the load bearing state of the current network;
a first resource creating module, configured to create a resource if the resource creating policy is a resource multiplexing policy, where the first resource creating module includes:
the resource selection module is used for selecting a first resource to be multiplexed from the existing resources of the current network according to the resource creation requirement of the first tenant;
a first creating module, configured to create a second resource according to the first resource, where the first resource and the second resource are of the same type, and the second resource is used for being allocated to the first tenant;
a first adding module, configured to search for a virtual network element corresponding to the first resource, and add a reference relationship between the second resource and the virtual network element;
a second resource creating module, configured to create a resource if the resource creating policy is a resource non-multiplexing policy, where the second resource creating module includes:
the application module is used for applying for resources in the resource pool according to the resource creation requirement of the first tenant;
a second creating module, configured to create a new resource and a virtual network element if the application is successful, where the new resource is used to be allocated to the first tenant for use;
and the second adding module is used for adding the reference relationship between the newly-built resource and the virtual network element.
Optionally, the policy selection module is specifically configured to:
if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is less than or equal to a preset threshold value, selecting a resource multiplexing strategy;
and if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is greater than a preset threshold value, selecting a resource non-multiplexing strategy.
In a fifth aspect, an embodiment of the present application provides an SDN controller, including:
a processor;
a memory for storing instructions for execution by the processor;
wherein the processor is configured to perform the method of any of the first or second aspects above.
By adopting the technical scheme provided by the embodiment of the application, after resources are multiplexed among tenants, the resources and the network elements are in a many-to-one relationship, and a plurality of tenants only need to go to the resource pool for applying once, so that the resource utilization rate is improved, and the user cost is greatly saved.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a multi-tenant resource multiplexing method in an SDN network according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a multi-tenant resource multiplexing device in an SDN network according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an SDN controller according to an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic flowchart of a multi-tenant resource multiplexing method in an SDN network according to an embodiment of the present application, where the method is applicable to an SDN controller, and as shown in fig. 1, the method mainly includes the following steps.
Step S110: and judging whether to reuse the existing resources of other tenants.
In the embodiment of the application, a corresponding resource creation policy can be selected according to the bearer state of the current network. For example, in one possible implementation, the resource creation policy includes a resource multiplexing policy and a resource non-multiplexing policy, and it may be directly determined whether to multiplex existing resources of other tenants.
Specifically, if the difference between the maximum network element number that can be borne by the current network and the network element number borne by the current network is less than or equal to a preset threshold, which indicates that the network element number borne by the current network is too many, a resource multiplexing strategy is selected;
if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is greater than a preset threshold, the network element number borne by the current network is small, and more resources are available in the network, and then a resource non-multiplexing strategy is selected.
In a possible implementation manner, if the resource creation policy is a resource multiplexing policy, the step S121 is performed, and if the resource creation policy is a resource non-multiplexing policy, the step S131 is performed.
Step S121: according to the resource creation requirement of the first tenant, a first resource to be multiplexed is selected from existing resources of the current network.
If a resource multiplexing strategy is adopted, after a resource creating requirement of a tenant is received, a corresponding resource is selected from the current network for multiplexing, and the resource can be the resource which has the same type as the resource indicated by the resource creating requirement and is borne by the corresponding virtual network element and has the least number of resources in the current network.
In the embodiment of the application, the resource and the network element are in a many-to-one relationship, and the adoption of the multiplexing resource selection mode can be more beneficial to the load balance of the whole network.
Step S122: and creating a second resource according to the first resource, wherein the first resource and the second resource are of the same type, and the second resource is used for being allocated to the first tenant for use.
In the embodiment of the application, the second resource is directly copied from the first resource, and the resource does not need to be reapplied in the resource pool.
Step S123: and searching a virtual network element corresponding to the first resource, and adding the reference relation between the second resource and the virtual network element.
That is, here the second resource shares a network element with the first resource. After resources are multiplexed among the tenants, the resources and the network elements are in a many-to-one relationship, a plurality of tenants only need to apply for the resources once in the resource pool, the controller only needs to store the corresponding relationship between the resources and the network elements, the network element equipment in the resource pool is transparent to the tenants, and each tenant thinks that the tenant is the exclusive resource. When the tenant needs to issue the configuration to the resource, only the network element corresponding to the resource of the current tenant needs to be searched, and finally the configuration is issued.
By adopting the method provided by the embodiment of the application, resource multiplexing among a plurality of tenants can be realized, the resource utilization rate is improved, and the user cost is greatly saved.
Step S131: and applying for resources in the resource pool according to the resource creation requirement of the first tenant.
And if the resource non-reuse strategy is adopted, directly applying for the resource in the resource pool after receiving the resource creation requirement of the first tenant.
Step S132: and if the application is successful, establishing corresponding resources and virtual network elements.
And if the application is successful, creating the resource and the virtual network element. It should be noted that the resources and virtual network elements are newly established in the network and are not associated with other resources and virtual network elements in the network.
Step S133: and adding the reference relationship between the newly-built resource and the virtual network element, wherein the newly-built resource is used for being allocated to the first tenant for use.
And adding the reference relationship between the newly-built resource and the virtual network element, wherein the resource is successfully created and used for being distributed to a corresponding tenant.
In the embodiment of the application, the resource multiplexing strategy or the resource non-multiplexing strategy is selected according to the bearing state of the current network, so that the flexibility of network configuration is improved. Of course, those skilled in the art can also adopt the resource multiplexing strategy alone, which should be within the scope of the present application.
On the basis of the foregoing method embodiment, the present application further provides an apparatus embodiment, and fig. 2 is a schematic structural diagram of a multi-tenant resource multiplexing apparatus in an SDN network provided by the present application embodiment, as shown in fig. 2, the apparatus mainly includes the following modules.
And a policy selecting module 210, configured to select a corresponding resource creation policy according to the bearer state of the current network.
The policy selection module 210 is specifically configured to:
if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is less than or equal to a preset threshold value, selecting a resource multiplexing strategy;
and if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is greater than a preset threshold value, selecting a resource non-multiplexing strategy.
A first resource creating module 220, configured to create a resource if the resource creating policy is a resource multiplexing policy, where the first resource creating module includes:
the resource selection module is used for selecting a first resource to be multiplexed from the existing resources of the current network according to the resource creation requirement of the first tenant, wherein the first resource is a resource which meets the following conditions in the existing resources of the current network: the resource type indicated by the resource creation requirement is the same, and the number of resources borne by the corresponding virtual network element is the least.
A first creating module, configured to create a second resource according to the first resource, where the first resource and the second resource are of the same type, and the second resource is used for being allocated to the first tenant;
and the first adding module is used for searching the virtual network element corresponding to the first resource and adding the reference relation between the second resource and the virtual network element.
A second resource creating module 230, configured to create a resource if the resource creating policy is a resource non-multiplexing policy, where the second resource creating module 230 includes:
the application module is used for applying for resources in the resource pool according to the resource creation requirement of the first tenant;
a second creating module, configured to create a new resource and a virtual network element if the application is successful, where the new resource is used to be allocated to the first tenant for use;
and the second adding module is used for adding the reference relationship between the newly-built resource and the virtual network element.
The device is applied to the SDN controller, so that the SDN controller can select a resource multiplexing strategy or a resource non-multiplexing strategy according to the bearing state of the current network, and the flexibility of network configuration is improved. When the resource multiplexing strategy is adopted, when the tenant is selected to multiplex the existing resources, a plurality of tenants only need to apply for the resource pool once, the controller only needs to store the corresponding relation between the resources and the network elements, the network element equipment in the resource pool is transparent to the tenant, and each tenant thinks that the tenant is the exclusive resource. When the tenant needs to issue the configuration to the resource, only the network element corresponding to the resource of the current tenant needs to be searched, and finally the configuration is issued. Resource multiplexing among multiple tenants can be realized, the resource utilization rate is improved, and the user cost is greatly saved.
On the basis of the foregoing embodiments, an SDN controller is further provided in an embodiment of the present application, fig. 3 is a schematic structural diagram of an SDN controller provided in an embodiment of the present application, and as shown in fig. 3, the SDN controller 300 may include: a processor 310, a memory 320, and a communication unit 330. The components communicate via one or more buses, and those skilled in the art will appreciate that the architecture of the servers shown in the figures is not limiting of the application, and may be a bus architecture, a star architecture, a combination of more or fewer components than those shown, or a different arrangement of components.
The communication unit 330 is configured to establish a communication channel so that the storage device can communicate with other devices. And receiving user data sent by other equipment or sending the user data to other equipment.
The processor 310, which is a control center of the storage device, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and/or processes data by operating or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory. The processor may be composed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs connected with the same or different functions. For example, the processor 310 may include only a Central Processing Unit (CPU). In the embodiments of the present application, the CPU may be a single arithmetic core or may include multiple arithmetic cores.
The memory 320 is used for storing instructions executed by the processor 310, and the memory 320 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
The executable instructions in memory 320, when executed by processor 310, enable terminal 300 to perform some or all of the steps in the above-described method embodiments.
In specific implementation, the present application further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments provided in the present application when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
Those skilled in the art will clearly understand that the techniques in the embodiments of the present application may be implemented by way of software plus a required general hardware platform. Based on such understanding, the technical solutions in the embodiments of the present application may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application.
The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.
The above-described embodiments of the present application do not limit the scope of protection of the present application.
Claims (7)
1. A multi-tenant resource multiplexing method in an SDN network is characterized by comprising the following steps:
selecting a corresponding resource creation strategy according to the load-bearing state of the current network;
if the resource creation strategy is a resource multiplexing strategy, selecting a first resource to be multiplexed in the existing resources of the current network according to the resource creation requirement of a first tenant; searching a virtual network element corresponding to the first resource, and adding a reference relation between the second resource and the virtual network element;
if the resource creation strategy is a resource non-multiplexing strategy, applying for resources in a resource pool according to the resource creation requirement of the first tenant; if the application is successful, establishing corresponding resources and virtual network elements; and adding the reference relationship between the newly-built corresponding resources and the virtual network element, wherein the newly-built corresponding resources are used for being allocated to the first tenant for use.
2. The method of claim 1, wherein the first resource is a resource among existing resources of a current network that satisfies the following condition:
the resource type indicated by the resource creation requirement is the same, and the number of resources borne by the corresponding virtual network element is the least.
3. The method of claim 1, wherein selecting the corresponding resource creation policy according to the bearer status of the current network comprises:
if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is less than or equal to a preset threshold value, selecting a resource multiplexing strategy;
and if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is greater than a preset threshold value, selecting a resource non-multiplexing strategy.
4. A multi-tenant resource multiplexing device in an SDN network is characterized by comprising:
the strategy selection module is used for selecting a corresponding resource creation strategy according to the load bearing state of the current network;
a first resource creating module, configured to create a resource if the resource creating policy is a resource multiplexing policy, where the first resource creating module includes:
the resource selection module is used for selecting a first resource to be multiplexed from the existing resources of the current network according to the resource creation requirement of the first tenant;
a first creating module, configured to create a second resource according to the first resource, where the first resource and the second resource are of the same type, and the second resource is used for being allocated to the first tenant;
a first adding module, configured to search for a virtual network element corresponding to the first resource, and add a reference relationship between the second resource and the virtual network element;
a second resource creating module, configured to create a resource if the resource creating policy is a resource non-multiplexing policy, where the second resource creating module includes:
the application module is used for applying for resources in the resource pool according to the resource creation requirement of the first tenant;
a second creating module, configured to create a new corresponding resource and a virtual network element if the application is successful, where the new corresponding resource is used to be allocated to the first tenant for use;
and the second adding module is used for adding the newly-built reference relationship between the corresponding resources and the virtual network element.
5. The apparatus of claim 4, wherein the first resource is a resource among existing resources of a current network that satisfies the following condition:
the resource type indicated by the resource creation requirement is the same, and the number of resources borne by the corresponding virtual network element is the least.
6. The apparatus of claim 4, wherein the policy selection module is specifically configured to:
if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is less than or equal to a preset threshold value, selecting a resource multiplexing strategy;
and if the difference between the maximum network element number which can be borne by the current network and the network element number borne by the current network is greater than a preset threshold value, selecting a resource non-multiplexing strategy.
7. An SDN controller, comprising:
a processor;
a memory for storing instructions for execution by the processor;
wherein the processor is configured to perform the method of any one of claims 1-3.
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