CN106161068B

CN106161068B - Recovery prompting and distributing method for network resources and controller

Info

Publication number: CN106161068B
Application number: CN201510179053.9A
Authority: CN
Inventors: 冀智刚; 曹玮; 夏寅贲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-04-15
Filing date: 2015-04-15
Publication date: 2020-10-16
Anticipated expiration: 2035-04-15
Also published as: CN106161068A

Abstract

The embodiment of the invention provides a recovery prompting and distributing method for network resources and a controller. The recovery prompting method comprises the following steps: the controller monitors the link bandwidth use condition of the first virtual network service; the controller generates a resource recovery strategy of the first virtual network service according to the link bandwidth use condition, wherein the resource recovery strategy is used for indicating a recovery rule of network resources of the first virtual network service; the controller prompts the resource reclamation strategy to a user. Therefore, the method and the device have the advantages that the controller monitors the link bandwidth using condition of the first virtual network service, the resource recovery strategy is generated according to the link bandwidth using condition, and the user is enabled to confirm whether the network resource of the first virtual network service needs to be recovered or not by prompting the resource recovery strategy, so that a mode for automatically managing the network resource of the virtual network service is provided.

Description

Recovery prompting and distributing method for network resources and controller

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a recovery prompting and distributing method for network resources and a controller.

Background

At present, with the development of Network virtualization technology, more and more Network operators provide Virtual Network services for users, for example, a Virtual Private Network (VPN) service may be established between multiple places of a user, so that data transmission is performed between the multiple places of the user by using the VPN service.

Because the virtual network service needs to occupy a certain network resource, the network resource of the virtual network service needs to be managed while the virtual network service is provided. However, there is no way to automatically manage network resources of virtual network traffic in the prior art.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a method for prompting and allocating network resource recovery and a controller, so as to automatically manage network resources of a virtual network service.

Therefore, the technical scheme for solving the technical problem in the embodiment of the invention is as follows:

in a first aspect, an embodiment of the present invention provides a method for prompting recovery of a network resource, including:

the controller monitors the link bandwidth use condition of the first virtual network service;

the controller generates a resource recovery strategy of the first virtual network service according to the link bandwidth use condition, wherein the resource recovery strategy is used for indicating a recovery rule of network resources of the first virtual network service;

the controller prompts the resource reclamation strategy to a user.

In a first possible implementation manner of the first aspect, if the link bandwidth usage indicates that a maximum value of a link bandwidth actually occupied by the first virtual network service is 0 in a preset time period, the resource recovery policy is used to indicate to recover all network resources of the first virtual network service;

or, the link bandwidth usage indicates that, within a preset time period, the maximum value of the link bandwidth actually occupied by the first virtual network service is greater than 0 and smaller than a first threshold, and the resource recovery policy is used to indicate to recover part of the network resources of the first virtual network service.

In a second possible implementation manner of the first aspect, the generating, by the controller, a resource recycling policy of the first virtual network service according to the link bandwidth usage includes:

and when the controller determines that the link bandwidth use condition of a physical link for bearing the first virtual network service meets a threshold condition, generating a resource recovery strategy of the first virtual network service according to the link bandwidth use condition.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the determining, by the controller, that a link bandwidth usage of a physical link used for carrying the first virtual network service satisfies a threshold condition includes:

the controller determines that the link bandwidth available for allocation on the physical link is not enough to open a second virtual network service; or the controller determines that the actually occupied link bandwidth of the physical link is larger than a second threshold value.

With reference to the first aspect and any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

the controller receives confirmation indication of the resource recycling strategy from a user;

and the controller recovers the network resources of the first virtual network service according to the resource recovery strategy.

With reference to the first aspect and any one of the first to third possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes:

the controller obtains a resource allocation policy of the first virtual network service, wherein the resource allocation policy includes: a trigger condition and an allocation indication indicating an allocation rule for network resources of the first virtual network traffic;

the controller monitors a monitoring parameter associated with the trigger condition;

and the controller determines that the triggering condition is met according to the monitoring parameters, and allocates the network resources of the first virtual network service according to the allocation indication.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the monitoring parameter includes at least one of the following parameters: the current time and the quality attribute value of the first virtual network service; wherein the quality attribute value is used to represent the operation quality of the first virtual network service.

With reference to the fifth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the triggering condition includes: when the current moment reaches a preset moment, the allocation indication is used for indicating that: allocating a virtual link for carrying the first virtual network service to open the first virtual network service, to expand a link bandwidth of the first virtual network service, to reduce the link bandwidth of the first virtual network service, or to switch a link path of the first virtual network service; alternatively, the first and second electrodes may be,

the trigger conditions include: the quality attribute value of the first virtual network service is lower than a preset threshold, and the allocation indication is used for indicating: expanding the link bandwidth of the first virtual network service to improve the quality attribute value of the first virtual network service, or switching the link path of the first virtual network service to improve the quality attribute value of the first virtual network service;

wherein the quality attribute value is used to represent the operation quality of the first virtual network service.

With reference to the sixth or seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the quality attribute value is obtained according to at least one of the following parameters: a transmission quality attribute value, a virtual bandwidth utilization rate, a physical bandwidth utilization rate, a virtual link residual bandwidth and a physical link residual bandwidth;

wherein the transmission quality attribute value is used for representing the transmission quality of a virtual link for carrying the first virtual network service; the virtual bandwidth utilization rate is the ratio of the link bandwidth actually occupied by the first virtual network service to the link bandwidth of the first virtual network service; the physical bandwidth utilization rate is the ratio of the actually occupied link bandwidth of the physical link for bearing the first virtual network service to the link bandwidth of the physical link; the virtual link residual bandwidth is the residual link bandwidth of the first virtual network service; the physical link residual bandwidth is a physical link residual bandwidth for carrying the first virtual network service.

In a second aspect, an embodiment of the present invention provides a controller, including:

the first monitoring unit is used for monitoring the link bandwidth use condition of the first virtual network service;

a generating unit, configured to generate a resource recycling policy of the first virtual network service according to the link bandwidth usage, where the resource recycling policy is used to indicate a recycling rule for a network resource of the first virtual network service;

and the prompting unit is used for prompting the resource recovery strategy to a user.

In a first possible implementation manner of the second aspect, if the link bandwidth usage indicates that a maximum value of a link bandwidth actually occupied by the first virtual network service is 0 in a preset time period, the resource recovery policy is used to indicate to recover all network resources of the first virtual network service;

In a second possible implementation manner of the second aspect, the generating unit is specifically configured to generate the resource recycling policy of the first virtual network service according to a link bandwidth usage condition of a physical link used for carrying the first virtual network service when the link bandwidth usage condition is determined to meet a threshold condition.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, when it is determined that a link bandwidth usage condition of a physical link used for carrying the first virtual network service satisfies a threshold condition, the generating unit is specifically configured to determine that an available link bandwidth allocated on the physical link is not enough to open a second virtual network service; or determining that the actually occupied link bandwidth of the physical link is larger than a second threshold value.

With reference to the second aspect and any one of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes:

a receiving unit, configured to receive a confirmation indication of the resource recycling policy from a user;

and the recovery unit is used for recovering the network resources of the first virtual network service according to the resource recovery strategy when the receiving unit receives the confirmation indication.

With reference to the second aspect and any one of the first to third possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, the method further includes:

an obtaining unit, configured to obtain a resource allocation policy of the first virtual network service, where the resource allocation policy includes: a trigger condition and an allocation indication indicating an allocation rule for network resources of the first virtual network traffic;

a second monitoring unit for monitoring a monitoring parameter related to the trigger condition;

and the allocation unit is used for determining that the triggering condition is met according to the monitoring parameters and allocating the network resources of the first virtual network service according to the allocation indication.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the monitoring parameter includes at least one of the following parameters: the current time and the quality attribute value of the first virtual network service; wherein the quality attribute value is used to represent the operation quality of the first virtual network service.

With reference to the fifth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the triggering condition includes: when the current moment reaches a preset moment, the allocation indication is used for indicating that: allocating a virtual link for carrying the first virtual network service to open the first virtual network service, to expand a link bandwidth of the first virtual network service, to reduce the link bandwidth of the first virtual network service, or to switch a link path of the first virtual network service; alternatively, the first and second electrodes may be,

With reference to the sixth or seventh possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the quality attribute value is obtained according to at least one of the following parameters: a transmission quality attribute value, a virtual bandwidth utilization rate, a physical bandwidth utilization rate, a virtual link residual bandwidth and a physical link residual bandwidth;

It can be seen from the foregoing technical solutions that, in the embodiment of the present invention, a controller monitors a link bandwidth usage of a first virtual network service, generates a resource recovery policy according to the link bandwidth usage, and prompts the resource recovery policy to a user to enable the user to determine whether to recover a network resource of the first virtual network service, so as to provide a manner that can automatically manage the network resource of the virtual network service, so as to alleviate a situation of network resource shortage, and thus, can provide the virtual network service for more users using limited network resources.

In a third aspect, an embodiment of the present invention provides a method for allocating network resources, including:

the method comprises the following steps that a controller obtains a resource allocation strategy of virtual network service, wherein the resource allocation strategy comprises the following steps: triggering conditions and allocation indications, wherein the allocation indications are used for indicating allocation rules of network resources of the virtual network service;

and the controller determines that the triggering condition is met according to the monitoring parameters, and allocates the network resources of the virtual network service according to the allocation indication.

In a first possible implementation manner of the third aspect, the monitoring parameter includes at least one of the following parameters: the current time and the quality attribute value of the virtual network service; wherein the quality attribute value is used for representing the operation quality of the virtual network service.

In a second possible implementation manner of the third aspect, the trigger condition includes: when the current moment reaches a preset moment, the allocation indication is used for indicating that: allocating a virtual link for carrying the virtual network service to open the virtual network service, to expand a link bandwidth of the virtual network service, to reduce the link bandwidth of the virtual network service, or to switch a link path of the virtual network service; alternatively, the first and second electrodes may be,

the trigger conditions include: the quality attribute value of the virtual network service is lower than a preset threshold, and the allocation indication is used for indicating that: expanding the link bandwidth of the virtual network service to improve the quality attribute value of the virtual network service, or switching the link path of the virtual network service to improve the quality attribute value of the virtual network service;

wherein the quality attribute value is used for representing the operation quality of the virtual network service.

With reference to the first or second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the quality attribute value is obtained according to at least one of the following parameters: a transmission quality attribute value, a virtual bandwidth utilization rate, a physical bandwidth utilization rate, a virtual link residual bandwidth and a physical link residual bandwidth;

wherein, the transmission quality attribute value is used for representing the transmission quality of a virtual link for carrying the virtual network service; the virtual bandwidth utilization rate is the ratio of the link bandwidth actually occupied by the virtual network service to the link bandwidth of the virtual network service; the physical bandwidth utilization rate is the ratio of the actually occupied link bandwidth of the physical link for bearing the virtual network service to the link bandwidth of the physical link; the virtual link residual bandwidth is the residual link bandwidth of the virtual network service; and the residual bandwidth of the physical link is the residual link bandwidth of the physical link for bearing the virtual network service.

In a fourth aspect, an embodiment of the present invention provides a controller, including:

a monitoring unit for monitoring a monitoring parameter related to the trigger condition;

In a first possible implementation manner of the fourth aspect, the monitoring parameter includes at least one of the following parameters: the current time and the quality attribute value of the virtual network service; wherein the quality attribute value is used for representing the operation quality of the virtual network service.

In a second possible implementation manner of the fourth aspect, the trigger condition includes: when the current moment reaches a preset moment, the allocation indication is used for indicating that: allocating a virtual link for carrying the virtual network service to open the virtual network service, to expand a link bandwidth of the virtual network service, to reduce the link bandwidth of the virtual network service, or to switch a link path of the virtual network service; alternatively, the first and second electrodes may be,

With reference to the first or second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the quality attribute value is obtained according to at least one of the following parameters: a transmission quality attribute value, a virtual bandwidth utilization rate, a physical bandwidth utilization rate, a virtual link residual bandwidth and a physical link residual bandwidth;

As can be seen from the foregoing technical solutions, in the embodiments of the present invention, a controller obtains a resource allocation policy of a virtual network service, where the resource allocation policy includes: triggering conditions and allocation indications, wherein the allocation indications are used for indicating allocation rules of network resources of the virtual network service. And the controller monitors monitoring parameters related to the triggering conditions, and allocates the network resources of the virtual network service according to the allocation indication when the triggering conditions are met according to the monitoring parameters. It can be seen that, in the embodiment of the present invention, some limitations existing in the process of activating or using the virtual network service are considered by the trigger condition, that is, when the controller determines that the trigger condition is satisfied, the network resource of the virtual network service is automatically allocated according to the allocation indication. Thereby providing a way to automatically manage the network resources of the virtual network traffic.

Drawings

FIG. 1 is a schematic flow chart diagram illustrating a method embodiment of a recovery prompting method according to the present invention;

FIG. 2 is an alternative network architecture of the present invention;

FIG. 3 is a schematic flow chart diagram illustrating a method embodiment of the allocation method of the present invention;

FIG. 4 is a schematic flow chart diagram illustrating another embodiment of a recovery prompt method according to the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a controller provided in the present invention;

FIG. 6 is a schematic structural diagram of another embodiment of a controller according to the present invention;

FIG. 7 is a schematic structural diagram of another embodiment of a controller according to the present invention;

FIG. 8 is a schematic structural diagram of another embodiment of a controller according to the present invention;

FIG. 9 is a schematic structural diagram of another embodiment of a controller according to the present invention;

fig. 10 is a schematic structural diagram of another embodiment of the controller provided in the present invention.

Detailed Description

At present, with the development of network virtualization technology, more and more network operators provide virtual network services for users. For example, a VPN service is established between the multiple places of the user, so that data transmission is performed between the multiple places of the user by using the VPN service.

Because the virtual network service needs to occupy a certain network resource, the network resource of the virtual network service needs to be managed while the virtual network service is provided. However, when the number of the opened virtual network services is large or the occupied network resources are large, the situation of network resource shortage is easily caused. In the prior art, even through some optimization algorithms, the situation of resource shortage is difficult to be effectively relieved. Therefore, in the prior art, there is no way to automatically manage the network resources of the virtual network service to alleviate the shortage of the network resources, so as to provide the virtual network service for more users by using the limited network resources.

In the embodiment of the present invention, a method for prompting recovery of network resources and a controller are provided to automatically manage network resources of a virtual network service, so as to alleviate a situation of network resource shortage.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

The terms "first," "second," "third," or "fourth," and the like in the description and in the claims, and in the accompanying drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

With the continuous maturity and development of network technologies, a network architecture with separate control and forwarding becomes a trend of future network development. The network architecture with separated control and forwarding includes two devices: a Controller and a forwarding device, wherein the Controller is responsible for performing centralized control on the network, for example, issuing a forwarding table entry for the forwarding device, and the Controller is open to a user; and the forwarding equipment performs message matching and forwarding. The embodiment of the invention can be practically applied to a network architecture with separated control and forwarding, and the controller realizes the management of network resources.

Referring to fig. 1, an embodiment of the present invention provides a method embodiment of a method for prompting recovery of network resources, where the embodiment includes:

101: the controller monitors link bandwidth usage of the first virtual network traffic.

The embodiment of the invention can be actually used in a network architecture with control and forwarding separated, and a controller in the network architecture monitors the link bandwidth use condition of the first virtual network service.

The link bandwidth usage of the first virtual network traffic refers to the bandwidth usage of the virtual link for carrying the first virtual network traffic, and for better understanding of the present invention, the virtual link is described below by way of an example. The network shown in fig. 2 includes 5 nodes, namely, a node a, a node B, a node C, a node D, and a node E, where a physical link1 exists between the node a and the node B, a physical link 2 exists between the node B and the node C, a physical link 3 exists between the node B and the node D, a physical link 4 exists between the node C and the node D, and a physical link 5 exists between the node D and the node E. Assuming that virtual network traffic 01 is established between node a and node E, the link bandwidth allocated to virtual network traffic 01 is 50M (megabyte), and the link path is link path 1- > link path 3- > link path 5. The virtual link for carrying the virtual network traffic 01 refers to a link path with a link bandwidth of 50M established between the node a and the node E.

Specifically, the link bandwidth usage of the first virtual network traffic may be represented by the following parameters: the link bandwidth actually occupied by the first virtual network service, the remaining link bandwidth of the first virtual network service, or the virtual bandwidth utilization rate of the first virtual network service, where the virtual bandwidth utilization rate of the first virtual network service is a ratio of the link bandwidth actually occupied by the first virtual network service to the link bandwidth of the first virtual network service. For example, in the example shown in fig. 2, if the virtual network service 01 occupies a link bandwidth of 20M, it indicates that the link bandwidth actually occupied by the virtual network service 01 is 20M, and since the link bandwidth of the virtual network service 01 is 50M, the remaining link bandwidth of the virtual network service 01 is 50-20-30M, and the virtual bandwidth utilization rate of the virtual network service 01 is 20/50-40%. It should be noted that, in the embodiment of the present invention, the link bandwidth of a certain virtual network service or the link bandwidth of a certain physical link refers to the maximum value of the link bandwidth.

The link bandwidth usage of the first virtual network traffic may include link bandwidth usage of the first virtual network traffic within a preset time period. For example, the link bandwidth usage of the first virtual network service may specifically be a link bandwidth actually occupied by the first virtual network service in the last 30 days.

102: and the controller generates a resource recovery strategy of the first virtual network service according to the link bandwidth use condition.

The controller generates a resource recovery strategy of the first virtual network service according to the link bandwidth usage of the first virtual network service, for example, according to a maximum value or an average value of link bandwidths actually occupied by the first virtual network service in a preset time period.

The resource reclamation policy is used to indicate a reclamation rule for the network resources of the first virtual network traffic, and specifically, the resource reclamation policy may be used to indicate to reclaim all the network resources of the first virtual network traffic, i.e. to revoke the first virtual network traffic, or may be used to indicate to reclaim part of the network resources of the first virtual network traffic, e.g. to reduce the link bandwidth of the first virtual network traffic by 50%.

103: the controller prompts the resource reclamation strategy to a user.

The controller has no right to directly execute the resource reclamation policy, and therefore needs to prompt a user with the resource reclamation policy, for example, whether the user agrees to reduce the link bandwidth of the first virtual network traffic by 50%, and determine whether the resource reclamation policy needs to be executed according to a feedback indication of the user. Wherein, when the user feeds back the confirmation indication, the resource recycling policy may be executed, and specifically, this embodiment may include: the controller receives confirmation indication of the resource recycling strategy from a user; and the controller recovers the network resources of the first virtual network service according to the resource recovery strategy. When the user feeds back the rejection indication, the controller does not execute the resource recovery policy, and the controller can recover the network resources of other virtual network services in a similar manner.

It can be seen from the foregoing technical solutions that, in the embodiment of the present invention, the controller monitors the link bandwidth usage of the first virtual network service, generates the resource recovery policy according to the link bandwidth usage, and prompts the resource recovery policy to the user to enable the user to determine whether the network resource of the first virtual network service needs to be recovered, so as to provide a manner capable of automatically managing the network resource of the virtual network service, so as to alleviate a situation of network resource shortage, and thus, the controller can provide the virtual network service for more users by using limited network resources.

In this embodiment of the present invention, the resource recycling policy is used to indicate a recycling rule for the network resource of the first virtual network service. It should be noted that, in the embodiment of the present invention, the reclamation rule indicated by the resource reclamation policy is not limited, and in a preferred embodiment, the reclamation rule indicated by the resource reclamation policy generally satisfies the following characteristics: the less link bandwidth usage of the first virtual network traffic, the more network resources are reclaimed as indicated by the resource reclamation policy. The following embodiment of the present invention provides a specific implementation manner of the resource recycling policy.

The link bandwidth usage indicates that, within a preset time period, a maximum value of a link bandwidth actually occupied by the first virtual network service is 0, that is, the first virtual network service is not used within the preset time period, the resource reclamation policy is used to instruct to reclaim all network resources of the first virtual network service, for example, as shown in table 1, during a period from 1 day of 4 months to 30 days of 4 months, a maximum value of a link bandwidth of a single day is all 0M, and the resource reclamation policy is used to instruct to reclaim all network resources of the first virtual network service, for example, to release the link bandwidth of the first virtual network service, and to delete a link path of the first virtual network service.

TABLE 1

Or, the link bandwidth usage indicates that, within a preset time period, the maximum value of the actually occupied link bandwidth of the first virtual network traffic is greater than 0 and less than a first threshold, that is, it indicates that the first virtual network traffic is used within the preset time period, but the used network resources are few, for example, as shown in table 2, the maximum value of the link bandwidth of a single day is less than 15M during the period from 4 month 1 to 4 months 30, and the resource reclamation policy is used to instruct to reclaim part of the network resources of the first virtual network traffic, for example, to reallocate a link path and a link bandwidth for the first virtual network traffic, and the newly allocated link bandwidth is less than the original link bandwidth.

TABLE 2

In this embodiment of the present invention, the controller may perform resource recycling prompting when it is monitored that network resources are in shortage, and specifically, the generating, by the controller in 102, a resource recycling policy of the first virtual network service according to the link bandwidth usage condition may include: and when the controller determines that the link bandwidth use condition of a physical link for bearing the first virtual network service meets a threshold condition, namely when network resources of the physical link are in shortage, generating a resource recovery strategy of the first virtual network service according to the link bandwidth use condition. Wherein the threshold condition is used to measure whether the available link bandwidth on the physical link reaches a certain threshold. The available link bandwidth may refer to both the link bandwidth available for allocation, i.e., the link bandwidth not allocated to any virtual network traffic, and the link bandwidth that is actually unoccupied.

In this embodiment of the present invention, the controller determines whether the link bandwidth usage of the physical link satisfies a threshold condition, and may determine in any one of the following two manners:

first, the controller determines that the link bandwidth available for allocation on the physical link is insufficient to unblock the second virtual network traffic. For example, in the network shown in fig. 2, the link paths allocated for the virtual network traffic 01 are: physical link 1- > physical link 3- > logistics link 5, that is, the physical link for carrying virtual network traffic 01 is illustrated to include: physical link1, physical link 3, and logistics link 5. Where the link bandwidth of physical link 3 is 80M and the link bandwidth of virtual network traffic 01 is 50M, this indicates that 30M link bandwidth is available for allocation on physical link 3. If the controller receives an opening instruction for opening the virtual network service 02, and the opening instruction further indicates that the physical link for carrying the virtual network service 02 includes the physical link 3, a link bandwidth of 50M needs to be allocated to the virtual network service 02. At this time, the controller may determine that the link bandwidth 30M available for allocation on the physical link 3 is smaller than the link bandwidth that needs to be allocated to the virtual network service 02, i.e., the link bandwidth available for allocation on the physical link 3 is not enough to open the virtual network service 02.

In a second manner, the controller determines that the actually occupied link bandwidth of the physical link is greater than a second threshold, that is, when the actually occupied link bandwidth of the physical link is higher. The controller may determine that the actually occupied link bandwidth of the physical link is greater than a second threshold by monitoring that the physical bandwidth utilization rate of the physical link is greater than a certain threshold, or that the remaining link bandwidth of the physical link is less than a certain threshold. The physical bandwidth utilization rate of the physical link is a ratio of the actually occupied link bandwidth of the physical link to the link bandwidth of the physical link.

It should be noted that, in the embodiment of the present invention, the controller may monitor, in addition to monitoring the link bandwidth usage of the physical link used for carrying the first virtual network service, the link bandwidth usage of the physical link used for carrying the second virtual network service. For example, the first virtual network service and the second virtual network service are deployed in a network at the same time, the controller may monitor a link bandwidth usage of each physical link in the network, and when it is monitored that an actually occupied link bandwidth of any one physical link is greater than a corresponding threshold, analyze link bandwidth usage of all virtual network services in the network, for example, the first virtual network service and the second virtual network service, respectively, to determine whether a corresponding resource recovery policy needs to be generated. In addition, the controller can optimize the network through a multi-virtual network global virtual-real mapping optimization algorithm to further improve the available limit of physical network resources in the network, so that the virtual network service efficiency is effectively improved.

Because the virtual network service needs to occupy a certain network resource, the network resource of the virtual network service needs to be managed while the virtual network service is provided. And the virtual network service often has some limitations in the process of provisioning or using, for example, the virtual network service needs to be provisioned at a certain time, or more network resources need to be allocated when the network resources of the virtual network service are in shortage, and the like. These limitations are therefore often taken into account when managing the network resources of virtual network traffic. In the prior art, the network resources of the virtual network service can only be manually managed by an administrator, for example, when a certain specific time is manually monitored, the virtual network service is manually opened and certain network resources are allocated, and for example, when the shortage of the network resources of the virtual network service is manually monitored, more network resources are manually allocated. Obviously, this approach will result in a significant amount of work for the administrator and is prone to error resulting in poor reliability. However, in the prior art, there is no way to automatically manage the network resources of the virtual network service in consideration of some limitations existing in the process of provisioning or using the virtual network service.

In the embodiment of the present invention, a method for allocating network resources and a controller are provided to automatically manage network resources of a virtual network service in consideration of some limitations existing in the process of activating or using the virtual network service.

Referring to fig. 3, an embodiment of a method for allocating network resources according to the present invention includes:

301: the controller obtains a resource allocation strategy of the virtual network service.

In this embodiment of the present invention, the resource allocation policy includes: trigger conditions and allocation indications. The triggering condition is a triggering condition for allocating the network resources of the virtual network service, and the triggering condition reflects some limitations existing in the process of opening or using the virtual network service, and the allocation indication is used for indicating the allocation rule of the network resources of the virtual network service. Wherein the resource allocation policy is generally associated with a traffic characteristic of the virtual network traffic.

In the embodiment of the present invention, the resource allocation policy may be specifically formulated and input by a user, for example, the user may formulate the resource allocation policy by using a network modeling language, a web page operation, and the like, and input the resource allocation policy into the controller.

302: the controller monitors a monitored parameter associated with the trigger condition.

The embodiments of the present invention may be used in a network architecture in which control and forwarding are separated, and a controller in the network architecture monitors a monitoring parameter related to the trigger condition.

In particular, the monitoring parameters may comprise at least one of the following parameters: the current time and the quality attribute value of the virtual network service; wherein the quality attribute value is used for representing the operation quality of the virtual network service. When the monitoring parameters comprise the current time, the controller can monitor the current time through equipment such as a timer, and network resource allocation is carried out when the preset time is reached; when the monitoring parameter includes the quality attribute value, the controller is indicated to monitor the operation quality of the virtual network service, and the operation quality of the virtual network service is improved by adjusting the network resource.

It should be noted that, in the embodiment of the present invention, the execution order of 301 and 302 is not limited, and may be executed sequentially in a certain order or simultaneously.

303: and the controller determines that the trigger condition is met according to the monitoring parameters monitored in 302, and allocates the network resources of the virtual network service according to the allocation indication.

The allocating the network resource of the virtual network service may include allocating a virtual link for carrying the virtual network service to open the virtual network service, may also include expanding or reducing a link bandwidth of the virtual network service, and may also include switching a link path of the virtual network service.

As can be seen from the foregoing technical solutions, in the embodiments of the present invention, the controller obtains a resource allocation policy of a virtual network service, where the resource allocation policy includes: triggering conditions and allocation indications, wherein the allocation indications are used for indicating allocation rules of network resources of the virtual network service. And the controller monitors monitoring parameters related to the triggering conditions, and allocates the network resources of the virtual network service according to the allocation indication when the triggering conditions are met according to the monitoring parameters. It can be seen that, in the embodiment of the present invention, some limitations existing in the process of activating or using the virtual network service are considered by the trigger condition, that is, when the controller determines that the trigger condition is met, the network resource of the virtual network service is automatically allocated according to the allocation indication, so that a way of automatically managing the network resource of the virtual network service is provided.

In addition, in the embodiment of the invention, the network resources of the virtual network service do not need to be monitored and managed by an administrator, but are monitored by the controller, and when the triggering condition is determined to be met, the network resources are automatically distributed, so that the workload of the administrator is greatly reduced, errors are not easy to occur, and the reliability is improved.

In this embodiment of the present invention, the resource allocation policy includes: triggering conditions and allocation indications, wherein the allocation indications are used for indicating allocation rules of network resources of the virtual network service. It should be noted that, in the embodiment of the present invention, the triggering condition and the allocation indication specifically adopted in the resource allocation policy are not limited. The following embodiment of the present invention provides a specific implementation manner of the resource allocation policy.

The trigger conditions include: when the current moment reaches a preset moment, the allocation indication is used for indicating that: allocating a virtual link for carrying the virtual network service to open the virtual network service, expanding a link bandwidth of the virtual network service, reducing the link bandwidth of the virtual network service, or switching a link path of the virtual network service. It can be seen that in the embodiment of the present invention, the network resources of the virtual network service can be allocated at regular time. One of the preferable modes is that the preset time may be when a preset network is idle, so that some virtual network services that need to occupy more link bandwidth are opened or link bandwidth is expanded when the network is idle.

The allocation indication generally indicates that the allocation value of the link bandwidth, for example, when the current time reaches a preset time, a virtual link for carrying the virtual network service is allocated to open the virtual network service, and the link bandwidth of the allocated virtual network service is 100M. And for example, when the current time reaches a preset time, the link bandwidth of the virtual network service is expanded by 50%.

Or, the trigger condition includes: the quality attribute value of the virtual network service is lower than a preset threshold, and the allocation indication is used for indicating that: expanding the link bandwidth of the virtual network service to improve the quality attribute value of the virtual network service, or switching the link path of the virtual network service to improve the quality attribute value of the virtual network service; wherein the quality attribute value is used for representing the operation quality of the virtual network service. Therefore, in the embodiment of the present invention, when the operation quality of the virtual network service is poor, the operation quality of the virtual network service can be improved by allocating the network resources of the virtual network service.

Wherein the allocation indication indicates: the link bandwidth of the virtual network service is extended to improve the quality attribute value of the virtual network service, or the link path of the virtual network service is switched to improve the quality attribute value of the virtual network service, and the two cases of the allocation indication are introduced below respectively.

In a first case, the allocation indication is used to indicate that the link bandwidth of the virtual network traffic is to be extended to improve the quality attribute value of the virtual network traffic.

For example, when the virtual link utilization of the virtual network traffic is greater than the third threshold, the link bandwidth of the virtual network traffic may be extended so as not to affect the use of the virtual network traffic. The virtual bandwidth utilization rate is the ratio of the link bandwidth actually occupied by the virtual network service to the link bandwidth of the virtual network service. Taking fig. 2 as an example, a multi-protocol label switching (MPLS) Traffic Engineering (TE) tunnel link1 is established between a node a and a node E, and the resource allocation policy may indicate that when the virtual link utilization of the MPLS TE tunnel is greater than 80%, the link bandwidth is extended by 20%. The resource allocation policy specified by the NEMO language is as follows:

Policy p1 ApplyTo link1 Condition load(link1)>80％Action IncBW:20％

it should be noted that, an MPLS TE tunnel is generally a bidirectional tunnel, and when the virtual link utilization of the tunnel in any direction is greater than 80%, the link bandwidth in the direction may be expanded.

In a second case, the allocation indication is used to indicate to switch a link path of the virtual network traffic to improve a quality attribute value of the virtual network traffic.

For example, when the transmission quality of the virtual network service is poor, the link path of the virtual network service may be switched to the link path with better transmission quality. For example, as shown in fig. 2, a virtual network service 01 is carried on a physical link 3, and when the packet loss rate on the physical link 3 is relatively high, the virtual network service is switched from the physical link 3 to the physical link 2 and the physical link 4 to reduce the packet loss rate.

For another example, when the physical bandwidth utilization of the virtual network traffic is relatively high, the link path of the virtual network traffic may be switched to the link path with the relatively low physical bandwidth utilization. The physical bandwidth utilization rate is a ratio of a link bandwidth actually occupied by a physical link for carrying the virtual network service to a link bandwidth of the physical link. For example, as shown in fig. 2, virtual network traffic 01 is carried on physical link 3, and the physical bandwidth utilization on physical link 3 is 85% and greater than 80%, at which time the virtual network traffic is switched from physical link 3 to physical link 2 and physical link 4, so that the physical bandwidth utilization is reduced to below 80%.

In the embodiment of the present invention, the quality attribute value may be obtained according to at least one of the following parameters: a transmission quality attribute value, a virtual bandwidth utilization, a physical bandwidth utilization, a virtual link remaining bandwidth, and a physical link remaining bandwidth. The transmission quality attribute value is used to represent the transmission quality of a virtual link for carrying the virtual network service, and may include a packet loss rate or a transmission delay of the virtual link; the virtual link residual bandwidth is the residual link bandwidth of the virtual network service, that is, the residual link bandwidth of the virtual link for carrying the virtual network service; and the residual bandwidth of the physical link is the residual link bandwidth of the physical link for bearing the virtual network service.

It can be seen that the two embodiments provide a management method for network resources of virtual network services, and in fact, the two embodiments can be implemented simultaneously, thereby implementing comprehensive management for the network resources. This is explained in detail below by means of an example.

Referring to fig. 4, another embodiment of a method for prompting recovery of network resources is further provided in the present invention, where the embodiment includes:

401: the controller obtains a resource allocation policy of the first virtual network service. The resource allocation policy includes: a trigger condition and an allocation indication indicating an allocation rule for network resources of the first virtual network traffic.

402: the controller monitors a monitored parameter associated with the trigger condition.

403: and the controller determines that the triggering condition is met according to the monitoring parameters, and allocates the network resources of the first virtual network service according to the allocation indication.

404: the controller monitors link bandwidth usage of the first virtual network traffic.

405: and the controller generates a resource recovery strategy of the first virtual network service according to the link bandwidth use condition. The resource reclamation policy is used to indicate a reclamation rule for network resources of the first virtual network traffic.

406: the controller prompts the resource reclamation strategy to a user.

In the present embodiment, 401 to 406 are similar to 101 to 103 and 301 to 303 in the above embodiments, and reference is made to the above embodiments for relevant points, which are not described herein again.

The above describes embodiments of a recovery prompting method and an allocation method for network resources in the embodiment of the present invention, and a controller in the embodiment of the present invention will be described below from the perspective of a modular functional entity.

Referring to fig. 5 in an embodiment of the present invention corresponding to the embodiment shown in fig. 1, an embodiment of an apparatus of a controller 500 is provided, where the controller 500 of the embodiment includes: a first monitoring unit 501, a generating unit 502 and a prompting unit 503.

A first monitoring unit 501, configured to monitor a link bandwidth usage of the first virtual network service.

The embodiment of the present invention may be actually used in a network architecture with separate control and forwarding, and the controller 500 of the network architecture monitors the link bandwidth usage of the first virtual network service.

The link bandwidth usage of the first virtual network traffic refers to bandwidth usage of a virtual link for carrying the first virtual network traffic.

Specifically, the link bandwidth usage of the first virtual network traffic may be represented by the following parameters: the link bandwidth actually occupied by the first virtual network service, the remaining link bandwidth of the first virtual network service, or the virtual bandwidth utilization rate of the first virtual network service, where the virtual bandwidth utilization rate of the first virtual network service is a ratio of the link bandwidth actually occupied by the first virtual network service to the link bandwidth of the first virtual network service. For example, in the example shown in fig. 2, if the virtual network service 01 occupies a link bandwidth of 20M, it indicates that the link bandwidth actually occupied by the virtual network service 01 is 20M, and since the link bandwidth of the virtual network service 01 is 50M, the remaining link bandwidth of the virtual network service 01 is 50-20-30M, and the virtual bandwidth utilization rate of the virtual network service 01 is 20/50-40%.

A generating unit 502, configured to generate a resource recycling policy of the first virtual network service according to the link bandwidth usage.

The generating unit 502 generates the resource recycling policy of the first virtual network service according to the link bandwidth usage of the first virtual network service, for example, according to a maximum value or an average value of the link bandwidth actually occupied by the first virtual network service in a preset time period.

A prompting unit 503, configured to prompt the resource recycling policy to a user.

The controller 500 has no right to directly execute the resource reclamation policy, and therefore needs to be prompted to the user by the prompting unit 503, for example, whether the user agrees to reduce the link bandwidth of the first virtual network traffic by 50%, and determine whether the resource reclamation policy needs to be executed according to the feedback indication of the user. Specifically, the controller 500 in this embodiment may include: the receiving unit is used for receiving a confirmation instruction of a user to the resource recycling strategy; the recovery unit is configured to, when the receiving unit receives the confirmation instruction, recover the network resource of the first virtual network service according to the resource recovery policy. When the user feeds back the rejection indication, the recovery unit does not execute the resource recovery policy, and the controller 500 may recover the network resources of the other virtual network services in a similar manner.

As can be seen from the foregoing technical solutions, in the embodiment of the present invention, the monitoring unit 501 monitors the link bandwidth usage of the first virtual network service, the generating unit 502 generates the resource recovery policy according to the link bandwidth usage, and the prompting unit 5003 prompts the resource recovery policy to the user, so that the user determines whether the network resource of the first virtual network service needs to be recovered, and therefore, a manner capable of automatically managing the network resource of the virtual network service is provided to alleviate a situation of network resource shortage, so that the limited network resource can be used to provide the virtual network service for more users.

In this embodiment of the present invention, the controller 500 may perform resource recycling prompting only when it is monitored that network resources are in shortage, specifically, when a resource recycling policy of the first virtual network service is generated according to the link bandwidth usage, the generating unit 502 is specifically configured to determine that the link bandwidth usage of a physical link used for carrying the first virtual network service satisfies a threshold condition, that is, when network resources of the physical link are in shortage, generate the resource recycling policy of the first virtual network service according to the link bandwidth usage. Wherein the threshold condition is used to measure whether the available link bandwidth on the physical link reaches a certain threshold. The available link bandwidth may refer to both the link bandwidth available for allocation, i.e., the link bandwidth not allocated to any virtual network traffic, and the link bandwidth that is actually unoccupied.

In this embodiment of the present invention, the generating unit 502 determines whether the link bandwidth usage of the physical link satisfies a threshold condition, and may determine in any one of the following two manners:

first, the generating unit 502 determines that the link bandwidth available for allocation on the physical link is not enough to open the second virtual network service. For example, in the network shown in fig. 2, the link paths allocated for the virtual network traffic 01 are: physical link 1- > physical link 3- > logistics link 5, that is, the physical link for carrying virtual network traffic 01 is illustrated to include: physical link1, physical link 3, and logistics link 5. Where the link bandwidth of physical link 3 is 80M and the link bandwidth of virtual network traffic 01 is 50M, this indicates that 30M link bandwidth is available for allocation on physical link 3. If the controller 500 receives an open instruction for opening the virtual network service 02, and the open instruction further indicates that the physical link for carrying the virtual network service 02 includes the physical link 3, a link bandwidth of 50M needs to be allocated to the virtual network service 02. At this time, the generating unit 502 may determine that the link bandwidth 30M available for allocation on the physical link 3 is smaller than the link bandwidth that needs to be allocated to the virtual network service 02, i.e. the link bandwidth available for allocation on the physical link 3 is not enough to open the virtual network service 02.

In a second manner, the generating unit 502 determines that the actually occupied link bandwidth of the physical link is greater than a second threshold, that is, the actually occupied link bandwidth of the physical link is higher. The generating unit 502 may determine that the actually occupied link bandwidth of the physical link is greater than a second threshold by monitoring that the physical bandwidth utilization of the physical link is greater than a certain threshold, or that the remaining link bandwidth of the physical link is less than a certain threshold. The physical bandwidth utilization rate of the physical link is a ratio of the actually occupied link bandwidth of the physical link to the link bandwidth of the physical link.

It should be noted that, in the embodiment of the present invention, in addition to monitoring the link bandwidth usage of the physical link used for carrying the first virtual network service, the controller 500 may also monitor the link bandwidth usage of the physical link used for carrying the second virtual network service. For example, the first virtual network service and the second virtual network service are deployed in a network at the same time, the controller 500 may monitor the link bandwidth usage of each physical link in the network, and when it is monitored that the actually occupied link bandwidth of any physical link is greater than a corresponding threshold, analyze the link bandwidth usage of all the virtual network services in the network, for example, the link bandwidth usage of the first virtual network service and the link bandwidth usage of the second virtual network service, respectively, and determine whether a corresponding resource recovery policy needs to be generated. In addition, the controller 500 may also optimize the network through a multiple virtual network global virtual-real mapping optimization algorithm to further improve the available quota of the physical network resources in the network, thereby effectively improving the virtual network service efficiency.

Referring to fig. 6 in response to the embodiment shown in fig. 3, another embodiment of the controller 600 according to the present invention is further provided, where the controller 600 of the embodiment includes: an acquisition unit 601, a monitoring unit 602 and a distribution unit 603.

An obtaining unit 601, configured to obtain a resource allocation policy of a virtual network service.

In the embodiment of the present invention, the resource allocation policy may be specifically formulated and input by a user, for example, the user may formulate the resource allocation policy by using a network modeling language, a web page operation, and the like, and input the resource allocation policy into the controller 600.

A monitoring unit 602, configured to monitor a monitoring parameter related to the trigger condition.

The embodiment of the present invention may be actually used in a network architecture with separate control and forwarding, and the controller 600 in the network architecture monitors the monitoring parameters related to the trigger condition.

In particular, the monitoring parameters may comprise at least one of the following parameters: the current time and the quality attribute value of the virtual network service; wherein the quality attribute value is used for representing the operation quality of the virtual network service. When the monitoring parameter includes the current time, it indicates that the monitoring unit 602 may monitor the current time through a timer and other devices, and perform network resource allocation when the preset time is reached; when the monitoring parameter includes the quality attribute value, it indicates that the monitoring unit 602 monitors the operation quality of the virtual network service, and improves the operation quality of the virtual network service by adjusting the network resource.

An allocating unit 603, configured to determine that the triggering condition is met according to the monitoring parameter monitored by the monitoring unit 602, and allocate the network resource of the virtual network service according to the allocation indication.

As can be seen from the foregoing technical solutions, in the embodiment of the present invention, the obtaining unit 601 obtains a resource allocation policy of a virtual network service, where the resource allocation policy includes: triggering conditions and allocation indications, wherein the allocation indications are used for indicating allocation rules of network resources of the virtual network service. The monitoring unit 602 monitors the monitoring parameter related to the trigger condition, so that the allocating unit 603 allocates the network resource of the virtual network service according to the allocation indication when determining that the trigger condition is satisfied according to the monitoring parameter. It can be seen that, in the embodiment of the present invention, some limitations existing in the process of activating or using the virtual network service are considered by the trigger condition, that is, when the controller determines that the trigger condition is met, the network resource of the virtual network service is automatically allocated according to the allocation indication, so that a way of automatically managing the network resource of the virtual network service is provided.

In addition, in the embodiment of the present invention, the administrator does not need to monitor and manage the network resources of the virtual network service, but the controller 600 monitors the network resources, and when it is determined that the triggering condition is satisfied, the network resources are automatically allocated, so that the workload of the administrator is greatly reduced, errors are not easily made, and the reliability is improved.

Policy p1 ApplyTo link1 Condition load(link1)>80％Action IncBW:20％

Corresponding to the embodiment shown in fig. 4, the embodiment of the present invention further provides a controller capable of implementing the above two management manners for network resources. This will be explained in detail below.

Referring to fig. 7, the present invention further provides another embodiment of a controller 700, in which the controller 700 of the present embodiment includes: a first monitoring unit 701, a generating unit 702, a prompting unit 703, an acquiring unit 704, a second monitoring unit 705 and an allocating unit 706.

A first monitoring unit 701, configured to monitor a link bandwidth usage of the first virtual network service.

A generating unit 702, configured to generate a resource recycling policy of the first virtual network service according to the link bandwidth usage. The resource reclamation policy is used to indicate a reclamation rule for network resources of the first virtual network traffic.

A prompting unit 703, configured to prompt the resource recovery policy to a user.

An obtaining unit 704 is configured to obtain a resource allocation policy of the first virtual network service. The resource allocation policy includes: a trigger condition and an allocation indication indicating an allocation rule for network resources of the first virtual network traffic.

A second monitoring unit 705 for monitoring a monitoring parameter related to the trigger condition.

An allocating unit 706, configured to determine, by the controller according to the monitoring parameter, that the triggering condition is met, and allocate, according to the allocation indication, the network resource of the first virtual network service.

The functions of each unit module in this embodiment are similar to those of the embodiment shown in fig. 5 and 6, and for the relevant points, reference is made to the above embodiment, and details are not repeated here.

An embodiment of the controller in an embodiment of the present invention is described above from the perspective of a modular functional entity. An embodiment of the controller in the embodiment of the present invention will be described below from the viewpoint of hardware processing.

Referring to fig. 8, another embodiment of a controller 800 is provided. The controller 800 may be a microprocessor computer. Such as: the controller 800 may be one of portable devices such as a general-purpose computer, a custom-made machine, a mobile phone terminal, and a tablet. The controller 800 includes: a processor 804, a memory 806, a communication interface 802, and a bus 808. The processor 804, memory 806, and communication interface 802 are coupled by a bus 808 and communicate with each other.

The bus 808 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into one or more of an address bus, a data bus, and a control bus. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus.

The memory 806 is used to store executable program code, including computer operating instructions. When the controller 800 executes the program code, the controller 800 may complete steps 101 to 103 of the embodiment shown in fig. 1, or may implement all functions of the controller 500 of the embodiment shown in fig. 5. The memory 806 may comprise high-speed ram (ramdomaccess memory) memory. Optionally, the memory 806 may further include a non-volatile memory (non-volatile memory). For example, the memory 806 may include disk storage.

Processor 804 may be a Central Processing Unit (CPU), or processor 804 may be an Application Specific Integrated Circuit (ASIC), or processor 804 may be one or more Integrated circuits configured to implement embodiments of the present invention.

The processor 804 is configured to read instructions stored in the memory 806, so as to perform operations of monitoring a link bandwidth usage of the first virtual network traffic, generating a resource recycling policy of the first virtual network traffic according to the link bandwidth usage, and prompting the resource recycling policy to a user in the embodiments shown in fig. 1 and 5.

It should be noted that each functional unit of the controller 800 provided in this embodiment may be based on specific implementation of functions of the method embodiment shown in fig. 1 and the apparatus embodiment shown in fig. 5, and the definition and description of terms are consistent with those of the method embodiment shown in fig. 1 and the apparatus embodiment shown in fig. 5, and are not repeated here.

Referring to fig. 9, another embodiment of a controller 900 is provided. The controller 900 may be a microprocessor computer. Such as: the controller 900 may be one of portable devices such as a general-purpose computer, a custom-made machine, a mobile phone terminal, and a tablet. The controller 900 includes: a processor 904, a memory 906, a communication interface 902, and a bus 908. Processor 904, memory 906 and communication interface 902 are coupled by a bus 908 and communicate with each other.

The bus 908 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into one or more of an address bus, a data bus, and a control bus. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

The memory 906 is used to store executable program code, including computer operating instructions. When the controller 900 executes the program code, the controller 900 may complete steps 301 to 303 of the embodiment shown in fig. 3, or may implement all functions of the controller 600 of the embodiment shown in fig. 6. Memory 906 may comprise high-speed ram (ramdomaccess memory) memory. Optionally, the memory 906 may also include a non-volatile memory (non-volatile memory). For example, memory 906 may include disk storage.

Processor 904 may be a Central Processing Unit (CPU), or processor 904 may be an Application Specific Integrated Circuit (ASIC), or processor 904 may be one or more Integrated circuits configured to implement embodiments of the present invention.

A processor 904, configured to read an instruction stored in the memory 906, so as to execute the operations of obtaining a resource allocation policy of the virtual network service, monitoring a monitoring parameter related to the trigger condition, determining that the trigger condition is met according to the monitored monitoring parameter, and allocating the network resource of the virtual network service according to the allocation instruction in the embodiments shown in fig. 3 and 6.

It should be noted that each functional unit of the controller 900 provided in this embodiment may be based on specific implementation of functions of the method embodiment shown in fig. 3 and the apparatus embodiment shown in fig. 6, and the definition and description of terms are consistent with those of the method embodiment shown in fig. 3 and the apparatus embodiment shown in fig. 6, and are not repeated here.

Referring to fig. 10, another embodiment of a controller 1000 is provided. The controller 1000 may be a microprocessor computer. Such as: the controller 1000 may be one of portable devices such as a general-purpose computer, a custom-made machine, a mobile phone terminal, and a tablet. The controller 1000 includes: a processor 1004, a memory 1006, a communication interface 1002, and a bus 1008. The processor 1004, memory 1006, and communication interface 1002 are coupled by a bus 1008 that enables communication therebetween.

The bus 1008 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into one or more of an address bus, a data bus, and a control bus. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.

The memory 1006 is used to store executable program code, including computer operating instructions. When the controller 1000 executes the program code, the controller 1000 may complete steps 401 to 406 of the embodiment shown in fig. 4, or may implement all functions of the controller 700 of the embodiment shown in fig. 7. Memory 1006 may comprise high-speed ram (ramdomaccess memory) memory. Optionally, the memory 1006 may further include a non-volatile memory (non-volatile memory). For example, memory 1006 may include disk storage.

Processor 1004 may be a Central Processing Unit (CPU), or processor 1004 may be an Application Specific Integrated Circuit (ASIC), or processor 1004 may be one or more Integrated circuits configured to implement embodiments of the present invention.

A processor 1004, configured to read an instruction stored in the memory 1006, so as to execute operations of obtaining a resource allocation policy of the first virtual network service, monitoring a monitoring parameter related to the trigger condition, determining that the trigger condition is met according to the monitoring parameter, allocating a network resource of the first virtual network service according to the allocation instruction, monitoring a link bandwidth usage of the first virtual network service, generating a resource recycling policy of the first virtual network service according to the link bandwidth usage, and prompting the resource recycling policy to a user in the embodiments shown in fig. 4 and 7.

It should be noted that each functional unit of the controller 1000 provided in this embodiment may be based on specific implementation of functions of the method embodiment shown in fig. 4 and the apparatus embodiment shown in fig. 7, and the definition and description of terms are consistent with those of the method embodiment shown in fig. 4 and the apparatus embodiment shown in fig. 7, and are not repeated here.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for prompting recovery of network resources is characterized by comprising the following steps:

the method comprises the steps that a controller monitors the use condition of link bandwidth of first virtual network service, the use condition of the link bandwidth of the first virtual network service is the use condition of the bandwidth of a virtual link for bearing the first virtual network service, the virtual link for bearing the first virtual network service is a link path established between a first node and a second node of the first virtual network service, and the link path comprises a first physical link and a second physical link;

the controller prompts the resource recovery strategy to a user;

the controller generates a resource recovery strategy of the first virtual network service according to the link bandwidth use condition, and the resource recovery strategy comprises the following steps:

and when the controller determines that the available link bandwidth on a first physical link is not enough to open a second virtual network service, generating a resource recovery strategy of the first virtual network service, wherein the first physical link is used for bearing the first virtual network service and the second virtual network service.

2. The method according to claim 1, wherein the link bandwidth usage indicates that the maximum value of the link bandwidth actually occupied by the first virtual network service is 0 in a preset time period, and the resource recycling policy is used to indicate that all network resources of the first virtual network service are recycled;

3. The method of claim 1 or 2, further comprising:

4. A controller, comprising:

a first monitoring unit, configured to monitor a link bandwidth usage of a first virtual network service, where the link bandwidth usage of the first virtual network service is a bandwidth usage of a virtual link used for carrying the first virtual network service, and the virtual link carrying the first virtual network service is a link path established between a first node and a second node of the first virtual network service, where the link path includes a first physical link and a second physical link;

the prompting unit is used for prompting the resource recovery strategy to a user;

the generating unit is specifically configured to generate a resource recycling policy of the first virtual network service when it is determined that a link bandwidth available for allocation on a first physical link is not enough to open a second virtual network service, where the first physical link is used to carry the first virtual network service and the second virtual network service.

5. The controller according to claim 4, wherein the link bandwidth usage indicates that a maximum value of the link bandwidth actually occupied by the first virtual network service is 0 in a preset time period, and the resource recycling policy is used to indicate that all network resources of the first virtual network service are recycled;

6. The controller according to claim 4 or 5, further comprising: