WO2018014883A1

WO2018014883A1 - Strategy sending and receiving method, device and controller

Info

Publication number: WO2018014883A1
Application number: PCT/CN2017/094145
Authority: WO
Inventors: 王超; 李锋; 陆钱春
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-07-22
Filing date: 2017-07-24
Publication date: 2018-01-25
Also published as: CN107645400B; CN107645400A

Abstract

A method for sending a strategy comprises: according to network resources in a control area of a controller, determining a control strategy of the controller for controlling the network in a level where the controller is located; and sending the determined control strategy to the controller.

Description

Policy transmission and reception method, device and controller

Technical field

The present application relates to, but is not limited to, the field of communications, and in particular, to a method for transmitting and receiving a policy, a device, and a controller.

Background technique

Software Defined Network (SDN) is a new type of network architecture that manages network hardware based on software. Its network structure is hierarchical, and there is a controller in each network level. The controller is divided into different levels of super controller (Super Controller, referred to as SC) and domain controller (Domain Controller, DC for short). . SC and DC are further divided into multiple sub-layers according to their functional characteristics. The functions of each level controller are: resource abstraction, service management, policy management, alarm management, and performance management. Policy management includes: routing constraints, routing policies, protection policies, and so on.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Policy management can be used as a sub-module, built into the SDN controller, coupled with other modules of the controller, resulting in lower efficiency of the controller.

The embodiment of the invention provides a method for transmitting and receiving a policy, a device and a controller, so as to improve the operating efficiency of the controller.

An embodiment of the present invention provides a policy sending method, including: determining, according to network resources in a controller control area, a control policy for controlling, by the controller, a hierarchical network; and sending the determined control policy to the Controller.

In an exemplary embodiment, determining, according to the network resource in the controller control area, the control policy that the controller controls the layer network in which the controller is located includes: the controller is a multi-domain controller In the case of acquiring one or more sub-controls in the control area of the multi-domain controller One or more sub-control strategies of the controller, wherein the one or more sub-control policies are used to separately control the network in which the nodes are located, and the sub-controllers have a one-to-one correspondence with the sub-control policies; The one or more sub-control policies determine a control policy of the multi-domain controller to control the hierarchical network, wherein the one or more sub-controllers are at least one of the following: a single domain controller, and a multi-domain controller.

In an exemplary embodiment, the control policy includes at least one of: a network analysis policy for analyzing network resources, a network optimization policy for optimizing network resources, for using the controller The path calculation strategy for calculating the path in the hierarchical network.

In an exemplary embodiment, if the control policy includes the network analysis policy, determining, according to the network resource in the controller control area, that the controller controls the network in which the layer is located The control policy includes: grouping the network resources according to resource attributes of the network resources in the controller control area to obtain one or more network resource groups; and according to the grouped one or more network resources The network resource resource attribute of each network resource group in the group, the indicator parameter of the analysis indicator used for analyzing the network resource, and the predetermined index calculation formula, determining the index value of the network resource group after the grouping; determining the control The policy is at least one of the following: generating an alarm record according to the determined indicator value, a preset indicator value alarm interval, and an alarm level; according to any one of a resource grouping object, the resource attribute, and the analysis indicator or Combining, generating a report; determining, according to the association relationship of the network resources, the control area in the controller Said topology network resources.

In an exemplary embodiment, if the control policy includes the network optimization policy, determining, according to the network resource in the controller control area, that the controller controls the network in which the layer is located The control strategy includes: determining a pseudowire for data transmission to be adjusted, or a tunnel, or a pseudowire and a tunnel; respectively determining one or more of the pseudowire, or tunnel, or each of a pseudowire and a tunnel a first bandwidth adjustment value; determining the control policy: the first bandwidth adjustment value according to the determined one or more of the pseudowires, or the tunnel, or each of the pseudowires and the tunnel, the port and one or more Determining one or more of the pseudowires, or tunnels, or pseudowires and tunnels, the associated relationship between the pseudowires, or the tunnels, or each of the pseudowires and the tunnels, and the preset bandwidth adjustment values of the ports a second bandwidth adjustment value of each of the ports; or, determining a set of ports to be adjusted for data transmission; respectively obtaining a port flow rate of each port in the port set, and a preset bandwidth guarantee band a wide value, and a preset bandwidth utilization; determining the control policy is: the bandwidth value of the preset bandwidth guarantee according to the obtained port flow rate of each port bandwidth in the port set, and a preset The bandwidth utilization, determining a bandwidth convergence ratio of each port in the port set; or determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted; respectively determining one or more Determining, by the pseudowire, or a tunnel, or a first bandwidth adjustment value of each of the pseudowire and the tunnel; determining the control policy as: determining the one or more of the pseudowires, or tunnels, or pseudowires and tunnels The first bandwidth adjustment value of each of the ports, the association relationship between the port and one or more of the pseudowires, or the tunnel, or each of the pseudowires and the tunnel, and the preset bandwidth adjustment value of the port are determined. a second bandwidth adjustment value of each of the one or more of the pseudowires, or the tunnels, or the pseudowires and the tunnels; determining a set of ports to be adjusted for data transmission; respectively acquiring each port in the set of ports Port flow The preset bandwidth guaranteed bandwidth value and the preset bandwidth utilization; determining the control policy is: preset bandwidth guarantee according to the obtained port flow rate of each port bandwidth in the port set The bandwidth value, and the preset bandwidth utilization, determine a bandwidth convergence ratio of each port in the port set.

In an exemplary embodiment, if the control policy includes the path calculation policy, determining, according to the network resource in the controller control area, that the controller controls the network in which the layer is located The control policy includes: acquiring network resource data in the hierarchical network where the controller is located, and a service path corresponding to the network resource data; determining the control policy is: determining the hierarchical network in which the controller is located The calculation reference indicator of the path and the service path corresponding to the network resource data determine a result of the path calculation.

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.

The embodiment of the present invention further provides a policy receiving method, including: receiving a control policy for controlling a network in a hierarchy; and controlling, according to the received control policy, a network in a layer.

In an exemplary embodiment, receiving a control policy for controlling a layered network includes: receiving the plurality of one or more sub-control policies generated according to one or more sub-controllers within a multi-domain controller control region The control policy that the domain controller controls the network in which the layer is located, where the one or more sub-control policies are used to separately control the network in which the layer is located. The sub-controller has a one-to-one correspondence with the sub-control policy, and the one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller.

In an exemplary embodiment, the receiving the control policy for controlling the network in which the layer is located includes: receiving, after the plurality of control policies are aggregated, the receiver orchestration obtains the plurality of control policies. The control strategy.

An embodiment of the present invention further provides a policy sending apparatus, including: a determining module, configured to: determine, according to network resources in a controller control area, a control policy for controlling, by the controller, a hierarchical network; a sending module, setting To: send the determined control policy to the controller.

In an exemplary embodiment, the determining module includes: an obtaining unit, configured to: acquire one or more sub-controllers in the multi-domain controller control region if the controller is a multi-domain controller One or more sub-control strategies of the controller, wherein the one or more sub-control policies are used to separately control the network in which the layer is located, and the sub-controller has a one-to-one correspondence with the sub-control policies; And being configured to: determine, according to the one or more sub-control policies, a control policy that controls the multi-domain controller to control the hierarchical network, where the one or more sub-controllers are at least one of the following: a single domain controller , multi-domain controller.

The embodiment of the present invention further provides a policy receiving apparatus, including: a receiving module, configured to: receive a control policy for controlling a network in which the layer is located; and the control module is configured to: according to the received control policy, Hierarchical network for control.

In an exemplary embodiment, the receiving module includes: a first receiving unit configured to: receive the plurality of generated by one or more sub-control policies of one or more sub-controllers within a multi-domain controller control region The control policy that the domain controller controls the network in which the layer is located, wherein the one or more sub-control policies are used to separately control the network in which the layer is located, and the sub-controller has a one-to-one correspondence with the sub-control policy Relationship, the one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller.

In an exemplary embodiment, the receiving module includes: a second receiving unit, configured to: when the control policy is multiple, the receiving orchestration obtains the plurality of control policies after the convergence of the plurality of control policies Control Strategy.

The embodiment of the invention further provides a computer readable storage medium, which is stored in a computer executable An instruction that implements the policy receiving method described above when the computer executable instructions are executed.

The embodiment of the invention also provides a controller. The system includes the policy receiving device described in any of the preceding clauses.

The embodiment of the invention further provides a storage medium. The storage medium is configured to store program code for performing the following steps: determining, according to network resources in the controller control area, a control strategy for controlling the controller to control the hierarchical network; sending the determined control policy to the Controller.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the step of determining, according to the network resource within the controller control region, the controller to control the hierarchical network in which it is located The control strategy includes: acquiring one or more sub-control strategies of one or more sub-controllers within the multi-domain controller control region if the controller is a multi-domain controller, wherein the one or more The sub-control strategy is used to separately control the network in which the layer is located, and the sub-controller has a one-to-one correspondence with the sub-control policy; determining, according to the one or more sub-control policies, the multi-domain controller A control strategy for controlling the network, wherein the one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the following steps: the control policy comprises at least one of: a network analysis policy for analyzing network resources, for a network A network optimization strategy optimized for resources, a path calculation strategy for calculating a path in a hierarchical network in which the controller is located.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the following steps: in the case where the control policy includes the network analysis policy, according to the And determining, by the network resource, the control policy that the controller controls the network in which the network is located, by: grouping the network resources according to resource attributes of the network resources in the controller control area, to obtain one or more Network resource group; the network resource group resource attribute of each network resource group in the grouped one or more network resource groups, the indicator parameter of the analysis indicator used for analyzing the network resource, and the predetermined index calculation formula, Determining an indicator value of the network resource group after the grouping; determining that the control policy is at least one of: generating an alarm record according to the determined indicator value, a preset indicator value alarm interval, and an alarm level; Generating a report, any one or combination of the object, the resource attribute, and the analysis indicator And determining, according to the association relationship of the network resources, a topological relationship of the network resources in the controller control area.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the following steps: in the case where the control policy includes the network optimization policy, according to the a network resource, the determining, by the controller, the control policy for controlling a network in which the layer is located includes: determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted; respectively determining one or more of the foregoing a first bandwidth adjustment value of each of a pseudowire, or a tunnel, or a pseudowire and a tunnel; determining the control strategy to: according to the determined one or more of the pseudowires, or tunnels, or pseudowires and tunnels The first bandwidth adjustment value of one, the association relationship between the port and one or more of the pseudowires, or the tunnel, or each of the pseudowires and the tunnel, and the preset bandwidth adjustment value of the port, determining one or a second bandwidth adjustment value of each of the plurality of pseudowires, or tunnels, or pseudowires and tunnels; or determining a set of ports to be adjusted for data transmission; respectively acquiring the port set The port flow rate of each port, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization; determining the control policy is: according to the acquired port flow rate of each port bandwidth in the port set, Determining the bandwidth value of the bandwidth guarantee, and the preset bandwidth utilization, determining a bandwidth convergence ratio of each port in the port set; determining a pseudowire, or a tunnel, or a tunnel for data transmission to be adjusted, or a pseudowire and a tunnel; respectively determining a first bandwidth adjustment value of each of the one or more of the pseudowire, or the tunnel, or the pseudowire and the tunnel; determining the control strategy to be: according to the determined one or more a first line adjustment value of each of a pseudowire, or a tunnel, or a pseudowire and a tunnel, an association of the port with one or more of the pseudowires, or a tunnel, or each of a pseudowire and a tunnel, and a preset bandwidth adjustment value of the port, determining a second bandwidth adjustment value of each of the one or more of the pseudowires, or a tunnel, or a pseudowire and a tunnel; determining a port set to be adjusted for data transmission; Minute Obtaining a port flow rate of each port in the port set, a preset bandwidth guaranteed bandwidth value, and a preset bandwidth utilization; determining the control policy: according to the acquired bandwidth of each port in the port set The port flow rate, the bandwidth value guaranteed by the preset bandwidth, and the preset bandwidth utilization determine a bandwidth convergence ratio of each port in the port set.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the following steps: in the case where the control policy includes the path calculation policy, according to the control The controlling the policy of the controller to control the hierarchical network includes: acquiring network resource data in the hierarchical network where the controller is located, and corresponding to the network resource data. The service path is determined by: determining a result of the path calculation according to the calculation reference indicator used to determine the path in the hierarchical network where the controller is located, and the service path corresponding to the network resource data.

The embodiment of the invention further provides a storage medium. The storage medium is configured to store program code for performing the following steps: receiving a control policy for controlling a network in which the layer is located; and controlling the layer network according to the received control policy.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the step of: receiving the one generated by one or more sub-control policies of one or more sub-controllers within a multi-domain controller control region The control policy of the multi-domain controller for controlling the network in which the layer is located, wherein the one or more sub-control policies are used to separately control the network in which the layer is located, and the sub-controller and the sub-control policy are one by one Correspondingly, the one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller.

In an exemplary embodiment, the storage medium is further configured to store program code for performing the following steps: receiving a control policy for controlling the network in which the layer is located includes: if the control policy is multiple, Receiving the control strategy obtained after the orchestrator aggregates a plurality of control policies.

Through the embodiment of the present invention, the controller in the hierarchical network is provided with a control strategy for controlling the network in the hierarchy through the external system. Since the control strategy of the controller is provided by the external system, the policy management is reduced to the controller. The impact of efficiency, therefore, can improve the efficiency of the controller.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a block diagram showing the hardware structure of a terminal of a policy sending method according to an embodiment of the present invention;

2 is a flowchart of a method for transmitting a policy according to an embodiment of the present invention;

3 is a flow chart of a method for transmitting a policy according to an alternative embodiment of the present invention;

4(a) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention;

4(b) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention;

4(c) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention;

4(d) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention;

4(e) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention;

5 is a schematic structural diagram of an external system in a hierarchical network of an SDN controller according to an alternative embodiment of the present invention;

6 is a schematic diagram of a communication interaction process between an external system and an SDN controller according to an alternative embodiment of the present invention;

7 is a schematic structural view of an external system according to an alternative embodiment of the present invention;

FIG. 8 is a structural block diagram of a domain optimization module 710 of an external system according to an alternative embodiment of the present invention; FIG.

9 is a block diagram showing the structure of a network analysis unit 82 of an external system according to an alternative embodiment of the present invention;

10 is a flow chart of a bandwidth optimization algorithm in accordance with an alternative embodiment of the present invention;

11 is a flowchart of an algorithm for convergence ratio optimization according to an alternative embodiment of the present invention;

12 is a flowchart of a joint optimization algorithm for bandwidth optimization and convergence ratio optimization according to an alternative embodiment of the present invention;

13 is a flowchart of a path computation algorithm in accordance with an alternative embodiment of the present invention;

14 is a block diagram showing a hardware configuration of a controller of a policy receiving method according to an embodiment of the present invention;

FIG. 15 is a flowchart of a method for receiving a policy according to an embodiment of the present invention; FIG.

16 is a flowchart of a policy receiving method according to an alternative embodiment of the present invention;

FIG. 17 is a structural block diagram of a policy sending apparatus according to an embodiment of the present invention; FIG.

FIG. 18 is a structural block diagram of a determining module 172 of a policy sending apparatus according to an embodiment of the present invention;

FIG. 19 is a structural block diagram of a transmitting module 174 of a policy sending apparatus according to an embodiment of the present invention;

20 is a structural block diagram of a policy receiving apparatus according to an embodiment of the present invention;

FIG. 21 is a structural block diagram 1 of a receiving module 202 of a policy receiving apparatus according to an embodiment of the present invention;

FIG. 22 is a second structural diagram of a receiving module 202 of a policy receiving apparatus according to an embodiment of the present invention;

23 is a block diagram showing the structure of a controller in accordance with an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described below with reference to the accompanying drawings.

It may be noted that the terms "first", "second" and the like are used herein to distinguish similar objects, and are not necessarily used to describe a particular order or order.

The embodiment of the present application provides a policy sending method, which can be performed in a mobile terminal, a computer terminal, or the like. Taking the operation on the terminal as an example, FIG. 1 is a hardware structural block diagram of a terminal according to a policy sending method according to an embodiment of the present invention. As shown in FIG. 1, terminal 10 may include one or more (only one shown) first processor 102 (first processor 102 may include, but is not limited to, a microprocessor MCU (Micro Controller Unit) Unit) (Micro Controller Unit) or a programmable device FPGA (Field Programmable Gate Array) processing device, a first memory 104 configured to store data, and a communication device Functional first transmission device 106. It will be understood by those skilled in the art that the structure shown in FIG. 1 is merely illustrative and does not limit the structure of the above electronic device. For example, terminal 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.

The first memory 104 can be configured as: a software program and a module for storing application software, such as a program instruction/module corresponding to the policy sending method in the embodiment of the present invention, the first processor 102 can be configured to: store in the first memory by running The software program and modules within 104 are executed to perform various functional applications and data processing, that is, to implement the above method. The first memory 104 can include a high speed random access memory and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the first memory 104 can further include memory remotely located relative to the first processor 102, which can be connected to the terminal 10 over a network. Examples of the above networks include, but are not limited to, the Internet, an intranet, a local area network, Mobile communication networks and combinations thereof.

The first transmission device 106 can be configured to receive or transmit data via a network. The network instance described above may include a wireless network provided by a communication provider of the terminal 10. In one example, the first transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the first transmission device 106 can be a radio frequency (RF) module configured to communicate with the Internet wirelessly.

In this embodiment, a method for sending a policy to the terminal is provided. FIG. 2 is a flowchart of a method for sending a policy according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202: Determine, according to network resources in the controller control area, a control strategy for the controller to control the network in which the layer is located;

Step S204, the determined control policy is sent to the controller.

The controller in the hierarchical network is provided with a control strategy for controlling the network in the hierarchy through the external system, thereby improving the operating efficiency of the controller.

Optionally, the controller may control the control strategy of the hierarchical network in a plurality of manners. For example, the control strategy for controlling the hierarchical network of the controller may be determined according to network resources in each controller of each controller of the one or more controllers. For another example, if the controller is a multi-domain controller, one or more sub-control strategies of one or more sub-controllers within the multi-domain controller control region are acquired, wherein one or more sub-control strategies are used for one Or the plurality of sub-controllers respectively control the hierarchical network, and the sub-controller and the sub-control strategy have a one-to-one correspondence; according to the one or more sub-control strategies, determine a control strategy for the multi-domain controller to control the hierarchical network. The one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller. For example, controller A is a multi-domain controller, controller B and controller C are controllers in controller A sub-layer (controller A can control controller B and controller C), controller B and Controller C can be a single domain controller or a multi-domain controller. According to the control strategy that controller B and controller C control the hierarchical network, the controller A determines the control strategy for controlling the hierarchical network. According to the control strategy of the sub-controller, the multi-domain controller determines the control strategy of the multi-domain controller to control the hierarchical network from a global perspective, avoids the conflict of network resource usage, and improves the benefit of network resources. Use efficiency.

Through the policy sending method and the optional implementation manner, the network resource status is considered from a global perspective to determine a control strategy for the multi-domain controller to control the hierarchical network, thereby avoiding the conflict of network resource usage and improving the utilization efficiency of the network resource.

Alternatively, the determined control strategy can be sent to the controller in a variety of ways. For example, the determined control policy can be sent directly to the corresponding controller through the corresponding interface. For another example, if the controller corresponding to the control policy is a multi-domain controller, the control policy of the multi-domain controller and the control policy of one or more sub-controllers in the controller control area are sent together through the interface. A multi-domain controller, by which the control policy of one or more sub-controllers in its control area is sent to the corresponding sub-controller through an interface. For another example, for a plurality of control strategies, the orchestrator is used to aggregate multiple control policies; and the control policy after the orchestration is aggregated is sent to the corresponding controller. In the case that the controller corresponding to the control policy is a multi-domain controller, the control policy of the multi-domain controller and the control policy of one or more sub-controllers in the controller control area may be sent to the orchestrator through the interface. The multi-domain controller is sent by the orchestrator to the multi-domain controller through the interface, and the multi-domain controller sends the control policy of one or more sub-controllers in its control area to the corresponding sub-controller through the interface. Of course, in the case where the control strategy is one, the control strategy can also be sent to the corresponding controller through the assembler. The above interface may be a physical interface or a logical interface, and the format may be set as needed.

According to the foregoing policy sending method and the optional implementation manner of the embodiment of the present invention, in a case where there are multiple control strategies, the orchestrator is used to aggregate multiple control policies, and the control policies are aggregated by the assembler and then sent to the corresponding The controller facilitates the transmission management of the control strategy and improves the transmission efficiency of the control strategy.

Optionally, the foregoing control policy may include at least one of the following: a network analysis policy for analyzing network resources, a network optimization policy for optimizing network resources, and a path for a network in a hierarchical network where the controller is located. Calculated path calculation strategy.

Optionally, in the case that the control policy includes a network analysis policy, the foregoing control policy may be determined by: resource attributes of network resources (eg, routes, pseudowires, tunnels, ports, etc.) within the control area of the controller ( For example, a relationship between a pseudowire and a tunnel, a related service type, and the like, grouping network resources to obtain one or more network resource groups; Resource attributes of each network resource group in one or more network resource groups, indicator parameters (eg, bandwidth, traffic, bandwidth utilization, etc.) of the analysis indicators used to analyze the network resources, and predetermined indicator calculation formulas ( For example, a formula for characterizing the proportion of different indicator parameters, determining an index value of the network resource group after the grouping; determining that the network analysis policy is at least one of the following: a preset indicator value alarm interval and an alarm level according to the determined indicator value (for example, serious, important, normal, slight, etc.), generating an alarm record; generating a report according to any one or a combination of the resource grouping object, the resource attribute, and the analysis index; determining the controller control area according to the network resource association relationship The topological relationship of network resources within.

Optionally, in the case that the control policy includes a network optimization policy, the foregoing control policy is determined by determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted (by setting a screening condition or Determining a pseudowire, or a tunnel, or a pseudowire and a tunnel in a pre-specified manner; determining a first bandwidth adjustment value for each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel, respectively; determining that the control strategy is : according to the determined first bandwidth adjustment value of one or more pseudowires, or tunnels, or each of the pseudowires and the tunnel, the port and each of the one or more pseudowires, or tunnels, or pseudowires and tunnels The association relationship, and the preset bandwidth adjustment value of the port, determining a second bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel; or determining the port to be adjusted for data transmission Sets (the set of ports can be determined by setting filter conditions or pre-specified methods); obtaining the port flow rate of each port in the port set and the bandwidth value of the preset bandwidth guarantee, respectively. And the preset bandwidth utilization; determining the foregoing control strategy: determining, according to the port flow rate of each port bandwidth in the obtained port set, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization, determining each port set The bandwidth convergence ratio of the ports; or, the pseudowires, or tunnels, or pseudowires and tunnels for data transmission to be adjusted (the pseudowires, or tunnels, or pseudowires can be determined by setting filter conditions or pre-specified methods) And a tunnel); respectively determining a first bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel; determining that the control strategy is: according to the determined one or more pseudowires, or tunnels, Or a first bandwidth adjustment value of each of the pseudowires and the tunnel, an association between the port and one or more pseudowires, or a tunnel, or each of the pseudowires and the tunnel, and a preset bandwidth adjustment value of the port, determining one Or a plurality of pseudowires, or a tunnel, or a second bandwidth adjustment value of each of the pseudowires and the tunnel; determining a set of ports to be adjusted for data transmission (can be set by filtering conditions) Determined in advance in the manner specified set of ports); obtaining each port set flow rate of each port in the port, the bandwidth value preset guaranteed bandwidth, and a preset bandwidth utilization; The foregoing control strategy is determined by: determining a bandwidth convergence ratio of each port in the port set according to the port flow rate of each port bandwidth in the obtained port set, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization.

Optionally, in the case that the control policy includes a path calculation policy, the foregoing control policy is determined by: acquiring network resource data in the hierarchical network where the controller is located, and a service path corresponding to the network resource data; determining the control policy is: A calculation reference metric used to determine the path in the hierarchical network where the controller is located (eg, the total length of the tunnel path in the hierarchical network, the flow/capacity distribution balance in the hierarchical network, the total traffic/capacity of the ports in the hierarchical network, and the hierarchical network The split tunnel path score), and the service path corresponding to the network resource data, determine the result of the path calculation.

The foregoing policy sending method and optional implementation manners of the embodiments of the present invention provide a control policy determining manner under different control policy types, and improve the reliability of the control strategy for the controller to control network resources in the hierarchical network. .

Based on the foregoing embodiment and the optional implementation manners, in order to explain the entire process interaction of the foregoing policy sending method, in the optional embodiment, a policy sending method is provided. FIG. 3 is a flowchart of a method for sending a policy according to an alternative embodiment of the present invention. As shown in FIG. 3, the process may include the following steps:

Step S302, the external system of the SDN controller of the layer provides a policy layer by layer to the external system of the SDN controller of the first layer, and is unified and aggregated by the external system of the SDN controller of the upper level to obtain an optimal strategy.

Step S304, the external system of the SDN controller collects, calculates, analyzes, and obtains the optimized data of the data managed by the SDN controller, and provides the optimized strategy to the SDN controller.

The method can be used for an external system that provides a strategy for an SDN controller, and FIG. 4(a) to FIG. 4(e) are schematic diagrams showing a hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention. The relationship between the SDN controller and the external system in the network hierarchy is described from the perspective of the SDN controller. The hierarchical network of the SDN controller with the external system will be described below with reference to FIG. 4(a) to FIG. 4(e), respectively.

4(a) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention, the network structure being an external system and a single controller (DC/SC) The interaction model of the policy module, wherein the ESE is an external strategy element unit and the DC/SC is a DC controller/SC controller. External system and single controller strategy Module interaction can include the following steps:

Step S1: The external system interacts with the policy module inside the controller to implement communication between the external system and the controller.

4(b) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention, the network structure being an interaction model between an external system and a policy module of a single orchestrator , where O is an orchestrator. The interaction of the external system with the policy module of a single orchestrator may include the following steps:

Step S1: The external system interacts with the policy module inside the orchestrator to implement communication between the external system and the orchestrator.

4(c) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention, the network structure being an interaction model between an external system, an orchestrator and a single controller. There is a one-to-one relationship between the controller and the external system. The three systems can communicate with each other. The external system is only responsible for calculating the strategies within the network hierarchy. The external system, the arrangement of the arranger with a single controller can include the following steps:

In step S1, the external system communicates the acquired strategy with the orchestrator through a separate interface;

Step S2, the programmer and the controller of the controller communicate with each other;

In step S3, the external system directly communicates the obtained policy with the associated controller through a separate interface (this step is optional).

In an interaction process, steps S1 to S3 may be performed, or only steps S1-S2 or only step S3 may be performed.

4(d) is a schematic diagram showing a hierarchical hierarchical network structure of an SDN controller with an external system according to an alternative embodiment of the present invention, the network structure being a plurality of external systems, an orchestrator and a plurality of controllers The interaction model has a one-to-many relationship between the arranger and the controller. There is a one-to-many relationship between the orchestrator and the external system, and multiple external systems can communicate with each other. The orchestrator interacting with multiple controllers can include the following steps:

In step S1, a plurality of external systems interact with a policy module of the orchestrator, and a policy module of the orchestrator is responsible for aggregating policies of multiple external systems;

Step S2, the policy module of the orchestrator interacts with multiple controllers, and the strategy of the external system is Reported to each of the plurality of controllers;

4(e) is a schematic diagram showing a fifth hierarchical structure of an SDN controller with an external system according to an alternative embodiment of the present invention, the network structure being a plurality of external systems, an orchestrator, and an SC, DC The interaction model of the controller is a structural model of the complete deployment of the external system on the SC and DC controllers. The interaction of multiple external systems, orchestrator, and SC, DC controller may include the following steps:

In step S1, the multiple external systems report the respective policies to the upper-layer external system, and the upper-layer external system completes the aggregation and calculation, and obtains the strategy in the local autonomous domain (within the control region);

Step S2, the upper layer external system communicates the acquired strategy with the orchestrator through a separate interface;

In step S3, the orchestrator interacts with the policy module of the SC controller, and reports the strategy of the external system to the SC controller.

In step S4, the SC controller uses the policy reported in step S3 for network resource management in the local autonomous domain.

In step S5, the external system directly communicates the obtained policy with the DC controller through a separate interface (this step is optional).

In step S6, the external system directly communicates the acquired policy with the SC controller through a separate interface (this step is optional).

Through this level of aggregation and calculation, the top-level SC controller can obtain the network resource strategy in the network layer where each network level SDN controller is located in the entire network, and consider the network resources from the perspective of the whole network resources. Quality/capacity constraints, get the optimal strategy, and be used for the management of network resources. The SC controller or the DC controller of the remaining layer can obtain a policy for controlling the network resources in the network layer by interacting with the upper layer SC controller, and the obtained strategy may be a policy obtained in the external system, or may be based on the top layer. The optimal strategy obtained by the SC controller (considering the quality/capacity constraints of network resources from the perspective of network resources), and the strategy for controlling the network in which it is located.

In an interaction process, step S1 to step S6 may be performed, or only step S1 to step S4 may be performed, or only step S1 and step S6 may be performed, or only step S1 and step S5 to step S6 may be performed.

FIG. 5 is a schematic structural diagram of an external system in a hierarchical network of an SDN controller according to an alternative embodiment of the present invention, and describes a relationship of an external system in a network hierarchy from the perspective of an external system of the SDN controller. As shown in FIG. 5, the network structure of the external system of the SDN controller can be abstracted according to the tree structure of the network layer where the SDN controller is located, and is also a tree structure. The steps of constructing the external system network structure may include:

Step S1: The external system of the SDN controller on the child node acquires the policy of the network resource in the network layer, and reports the obtained policy to the external system of the SDN controller on the parent node;

Step S2: The SDN controller on the parent node obtains the policy of the SDN controller external system on the child node to which it belongs, re-aggregates the data, calculates the policy in the local autonomous domain, and reports the policy to the parent node of the higher-level parent node. .

Through this step-by-step aggregation and calculation method, the external system of the top-level SDN controller can acquire the strategy of the external system of each network level controller of the entire network, and provides the top-level controller for the management of the entire network resources.

FIG. 6 is a schematic diagram of a communication interaction process between an external system and an SDN controller according to an alternative embodiment of the present invention. As shown in FIG. 6, the implementation steps of the interaction process may include:

Step S602: The controller sends a policy request to the external system, where the request parameters of the policy include a policy configuration parameter, a policy transmission configuration parameter, and a policy optimization configuration parameter.

Step S604, the external system sends a synchronization response message to the controller.

Step S606, the external system executes according to the policy issued by the controller, and obtains the executed policy result;

Step S608, after obtaining the policy result, the external system asynchronously sends the policy result to the controller;

In step S6010, the controller obtains the policy result of the external system and uses the network resource management in the network autonomous domain.

The external system of the SDN controller will be described below. Figure 7 is an alternative embodiment of the present invention As shown in FIG. 7, the external system may include: a data acquisition module 72, a data calculation module 74, a data analysis module 76, a data display module 78, and a domain optimization module 710. The system will explain.

The data collection module 72 is configured to: collect network resource data in a network autonomous domain (network level) where the SDN controller is located;

The data calculation module 74 is configured to: aggregate and calculate data of the data collection module 72 in a time dimension (eg, engraving, hour, day, week, month, year), or a resource dimension, or a time dimension and a resource dimension;

The data analysis module 76 is configured to: analyze data of the data calculation module 74 on a time dimension, a resource dimension, and a user-defined dimension;

The data display module 78 is configured to: display the data of the data analysis module 76 in a plurality of dimensions by means of a graph, and export the file to a file format, which is editable;

The domain optimization module 710 is configured to: optimize the analysis data of the data analysis module 76 on the entire network to obtain an optimization strategy, including network analysis, network optimization, path calculation, and return the optimization result to the SDN corresponding to the external system. Controller.

The data display module 78 is an optional module, and is generally used for displaying data (network resource data, control policy data).

FIG. 8 is a structural block diagram of a domain optimization module 710 of an optional external system according to the present invention. As shown in FIG. 8, the domain optimization module 710 may include: a network analysis unit 82, a network optimization unit 84, and a path calculation unit 86. The network analysis unit 82, the network optimization unit 84, and the path calculation unit 86 are separately described below, respectively, to provide a network analysis policy, a network optimization policy, and a path calculation strategy.

The network analysis unit 82 will first be described. 9 is a block diagram showing the structure of a network analysis unit 82 of an external system in accordance with an alternative embodiment of the present invention. As shown in FIG. 9, the network analysis unit 82 may include: a resource grouping subunit 92, an indicator extension definition subunit 94, an alarm analysis subunit 96, a report definition subunit 98, and a topology display subunit 910, which are combined below. The network analysis unit 82 will be described.

The resource grouping sub-unit 92 is configured to group network resources according to resource attributes. Resource Attributes can support multiple attributes, and multiple attributes can specify the level of each attribute to form multiple levels of resource grouping.

The indicator extension definition sub-unit 94 is configured to: connect with the resource grouping sub-unit 92, and perform definition definition of network resource grouping. According to the time dimension of the indicator, the convergence type, define an index calculation formula, and accurately and reasonably calculate the resource grouping indicator. value.

The alarm analysis sub-unit 96 is configured to be connected to the indicator extension definition sub-unit 94, and set an alarm threshold interval and an alarm level for each time dimension of the resource grouping indicator (for example, it can be classified into severe, important, ordinary, and slight four. Level), when the index calculation result exceeds the threshold interval, generate an alarm record, support chart display, and export function.

The report definition sub-unit 98 is configured to: select any object and any number of attributes or indicators according to the defined object and attribute indicators of the resource grouping, generate the report task, and support the timing of the report task, which can be generated at one time.

The topology display sub-unit 910 is configured to: generate a corresponding topology map according to the relationship of the network resources, and the topology display supports a custom condition query, an enlargement/reduction, an eagle eye, and the like.

Next, the network optimization unit 84 will be described. The network optimization strategy performed by the network optimization unit 84 may include: a bandwidth optimization algorithm, a convergence ratio optimization algorithm, a bandwidth optimization and a convergence ratio optimization joint optimization algorithm. These algorithms are described separately below.

10 is a flow diagram of a bandwidth optimization algorithm in accordance with an alternate embodiment of the present invention. As shown in FIG. 10, the process may include the following steps:

Step S1002, data screening, preparation.

The pseudowires to be adjusted can be determined according to the screening conditions or the specified adjustment objects, tunnels, and can be organized into specific data structures as input to the algorithm.

In step S1004, the optimal adjustment value is calculated.

The optimal value calculation strategy may generally be a fixed amplitude method or a interval median method, wherein the fixed amplitude method is to increase or decrease a fixed amplitude based on the current guaranteed bandwidth, and obtain a guaranteed bandwidth value when the utilization rate is optimal; The interval median method selects a reasonable interval of utilization and calculates the guaranteed bandwidth value according to the median value of the utilization interval.

According to the above two methods, an optimal value calculation strategy may be selected to calculate a pseudowire to be adjusted, Or the optimal adjustment value of the tunnel, or pseudowire and tunnel, the optimal adjustment value can be used as an important reference value for the final adjustment value.

In step S1006, the adjustment packet is divided.

The tunnel to be adjusted may be divided into a plurality of tunnel segments to be adjusted according to constraints, such as the service of the pseudowire, the pseudowire protection group, the characteristics of the working tunnel and the protection tunnel.

In step S1008, the adjustment value of each group is adjusted according to the constraint adjustment.

In each tunnel grouping, the optimal adjustment value in the tunnel grouping can be adjusted according to the same constraint condition of the same grouping adjustment value, so that the adjustment values are consistent.

Step S1010, constructing an optimal adjustment value of the matrix algorithm.

The matrix AX=B can be constructed, wherein the A matrix is the coefficient matrix of the optimal adjustment value of the tunnel, and the B vector is the allowable adjustment value of the passed port, and the X vector is solved to obtain the optimal adjustment value on each tunnel.

The construction method of the A matrix can be: the behavior of the matrix is adjusted by the tunnel on each port, and the column of the matrix is the adjustment value of each tunnel. If the tunnel does not pass a certain port, the adjustment value is filled with 0.

In step S1012, the result is output.

The calculation result calculated in step S1010 can be organized into an output result that meets the user's requirements, and the algorithm flow ends.

For the convergence ratio optimization algorithm, the concept of convergence ratio optimization is first introduced.

Convergence ratio: It is defined as the ratio of the port bandwidth B to the maximum allowable information rate C _x (CIR). That is, the convergence ratio α = B / C _x .

Guaranteed bandwidth utilization: defined as the ratio of the port flow rate S to the guaranteed bandwidth C under the port. That is, the bandwidth utilization is guaranteed to be V=S/C.

Full flow rate: defined as the product of guaranteed bandwidth utilization and C _x . That is, the full flow rate S _f =V*C _x .

Full utilization: defined as the ratio of the full flow rate S _f to the port bandwidth B. That is, the full utilization ratio U _f =S _f /B.

Convergence ratio derivation: According to the above formula, the convergence ratio can be obtained as follows:

The convergence ratio α = S / C * U _f ) = V / U _f .

The flow rate S in the above formula may include not limited to the following meanings:

Original flow rate

Average, peak, valley, median, weighted mean of the flow rate over a period of time;

The average value of the flow rate above the specified threshold for a certain period;

During a certain period, the values are the mean, peak, and valley values of TopN or LastN.

The calculation formula of the convergence ratio and the calculation formula of the convergence ratio derivation formula. The convergence ratio range is in the value interval greater than 0 and not exceeding 1. For the manager, the convergence ratio can define a minimum value α _min greater than 0 and not exceeding 1. .

The full utilization ratio can be a management expectation value, and the manager hopes that the utilization rate achieved by the port in the future to ensure that the bandwidth is fully matched is in an interval [U _min , U _max ], and the best is the interval median value.

Percentage of guaranteed bandwidth: Set to the ratio of the remaining guaranteed bandwidth to the physical bandwidth of the port. That is, the remaining guaranteed bandwidth ratio K = (Cx - C) / B.

For managers, the minimum K can be configured as an early warning threshold, denoted as K ₀ .

Based on the consideration of convenience, several special convergence ratio α values are defined as:

α ₁ : Calculated α according to the calculation formula of the convergence ratio derivation formula, when the full utilization ratio U _f is U _max .

α ₂ : Calculated α according to the calculation formula of the convergence ratio derivation formula when the full utilization ratio U _f is U _min .

α _b : Calculated α according to the calculation formula of the convergence ratio derivation formula, when the full utilization ratio U _f is taken as the interval median value.

α ₀ : Calculated according to the calculation formula of the convergence ratio and the ratio of the remaining guaranteed bandwidth, and takes C _x and α calculated when K is K ₀ .

11 is a flowchart of an algorithm for convergence ratio optimization according to an alternative embodiment of the present invention. As shown in FIG. 11, the process includes the following steps:

Step S1102, data acquisition, preparation.

The set of ports that meet the requirements can be filtered according to the filtering conditions or specified adjustment objects, and can be organized into specific data structures as input to the algorithm.

In step S1104, the collected data is aggregated to a long period.

The data in step S1102 can be aggregated to a long period. The flow rate polymerization value is obtained within a certain period of time. For example, the granularity of data collection is once every 15 minutes, and the gateway can aggregate the collected data as needed to aggregate into long periods, such as one day, one week, one month, or one year. The cycle time can be set as needed.

In step S1106, the port convergence ratio is calculated.

The guaranteed bandwidth utilization rate V in a certain period of time can be calculated according to the foregoing formula for ensuring the bandwidth C and the flow rate aggregation value obtained in step S1104, and then calculating the bandwidth utilization ratio V in a certain period of time; and then calculating the Nangong city and related by the formula convergence ratio derivation formula The condition calculates the convergence ratio α, and the method can be:

When α ₁ <= α ₀ :

1) If the intersection [α ₁ , α ₀ ] and [α _min , 1] are not empty, α takes the element value closest to α _{b in} the intersection.

2) If the intersection is empty, α is α _min when α ₀ <α _min ; α is ₁ when α ₁ >1.

When α ₁ >α ₀ :

1) If the intersection of intervals [α ₁ , α ₂ ] and [α _min , 1] is not empty, then α takes the minimum value of the intersection.

2) If the intersection of interval [α ₁ , α ₂ ] and [α _min , 1] is empty, α is α _min when α ₂ <α _min ; α is ₁ when α ₁ >1.

In step S1108, the remaining guaranteed bandwidth accounts for the early warning judgment and push.

In the early warning generation and push, after α is determined, the maximum configurable guaranteed bandwidth C _x can be calculated by the calculation formula of the aforementioned convergence ratio; then the remaining guaranteed bandwidth ratio K can be calculated by the formula F. The calculated K is compared with the pre-configured minimum remaining guaranteed bandwidth ratio K ₀ (threshold), and the warning is lower than K _{0 ,} and the warning may be presented on the interface or pushed to the designated network terminal/server of the administrator.

Step S1110, full utilization utilization warning judgment and push.

In the early warning generation and push, if α is not in the interval [α1, α2], it indicates that the full utilization ratio will be greater than the maximum full utilization U _max expected by the manager, or less than the expected minimum full utilization U _min . Given the full warning, the warning can be presented on the interface or pushed to the administrator's designated networked terminal/server.

In step S1112, the result is output.

The calculation result calculated in step S1110 can be organized into an output result that meets the user's requirements, and the algorithm flow ends.

FIG. 12 is a flowchart of a joint optimization algorithm for bandwidth optimization and convergence ratio optimization according to an alternative embodiment of the present invention. As shown in FIG. 12, the process may include the following steps:

Step S1202, data screening, preparation.

The pseudo-line, tunnel, and port object set to be adjusted may be determined according to the filtering condition of the joint optimization configuration or the specified adjustment object, and may be organized into a specific data structure as an input of the algorithm.

In step S1204, steps S1004 to S1010 of the bandwidth optimization algorithm are executed.

Steps S1004 to S1010 of the bandwidth optimization algorithm may be executed by taking the pseudowire and the tunnel object set in step S1202 as inputs.

Step S1206, outputting a pseudowire and a tunnel adjustment result of the bandwidth algorithm.

The port state table corresponding to the output result is obtained according to the bandwidth optimized pseudo line in step S1204, and the port object set to be adjusted prepared by the data in step S1202 is used as an input of the convergence ratio optimization algorithm.

In step S1208, steps S1104 to S1110 of the convergence ratio optimization algorithm are executed.

The input result of step S1206 can be performed to perform steps S1104 to S1110 of the convergence ratio optimization algorithm.

In step S1210, the joint optimization result is output.

The bandwidth optimization output result of step S1204 and the convergence ratio optimization result of step S1208 may be organized into a result that meets the user's requirements, and the algorithm flow ends.

The path calculation unit 86 will then be described. The path calculation unit 86 is configured to provide a path calculation strategy, including an optimal path modification mode under the entire network resource and an optimal path mode after introducing a new network resource. FIG. 13 is a flowchart of a path calculation algorithm according to an alternative embodiment of the present invention. As shown in FIG. 13, the process may include the following steps:

Step S1302: Acquire full network resource data.

Obtaining network-wide resource data may include: obtaining links, tunnels, port resources, performance data, and organizing into specific data structures as input to the algorithm.

Step S1304, performing dimension reduction processing on the entire network resource data.

After fully considering the defects of the Constrained Shortest Path First (CSPF), the network resource data can be reduced in dimension. CSPF only calculates the shortest path with constrained for a certain service. When doing network-wide business calculation, there is a big problem; the traffic/quality constraints are not fully considered.

Therefore, in this step, the node/link/end-to-end traffic/quality/capacity constraint conditions may be used, and the whole network resources are divided into several subgroups in the priority, the working protection tunnel relationship, and the relationship type grouping of the tunnel. To achieve the purpose of reducing the computational dimensions and complexity.

In step S1306, the path that does not meet the condition is screened out.

Screening for paths that do not meet the criteria may include: paths under certain individual tunnel rigid constraints, and tunnel path combinations under full network rigid constraints.

In step S1308, an indicator is introduced as a path calculation reference.

The indicator is introduced as a path calculation reference. The indicators may include: the total length of the entire network tunnel path, the network-wide traffic/capacity distribution balance, the total network port total traffic/capacity, and the entire network individual tunnel path score. Using the index calculation can easily obtain the optimal path among multiple paths of a certain service, and eliminate the trouble of equal-cost path screening.

In step S1310, an optimal path result is output.

The optimal path obtained in step S1308 can be organized into a result output that meets the user's requirements, and the algorithm flow ends.

This alternative embodiment has the following advantages:

1) propose an independent external system that provides a strategy to the SDN controller;

2) Describe the components, functions, and connections between the modules of the external system of the SDN controller;

3) Describe the location of the external system of the SDN controller in the network, and the relationship between the devices. The external system of each network level is aggregated layer by layer, considering the constraints of the whole network, and the optimized strategy is obtained. Meet the actual requirements of the live network;

4) Each SDN controller has an independent external system to provide strategies for the SDN controller. The strategy is complete, comprehensive, and has an independent interface with the SDN controller. It is free from external factors and has no dependencies.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, portions of the embodiments of the present invention that are essential or contributing may be embodied in the form of a software product stored in a storage medium (such as Read-Only Memory (ROM)/random The access memory (RAM, Random Access Memory), the disk, the optical disk, includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a network device, etc.) to perform the embodiments of the present invention. Policy sending method.

The embodiment of the present application further provides a policy receiving method, which can be performed in a controller, a terminal, or the like. Taking the operation on the controller as an example, FIG. 14 is a hardware block diagram of a controller of the policy receiving method according to an embodiment of the present invention. As shown in FIG. 14, the controller 140 may include one or more (only one shown in the figure) second processor 1402 (the second processor 1402 may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc. The processing device), the second memory 1404 configured to store data, and the second transmission device 1406 configured as a communication function. It will be understood by those skilled in the art that the structure shown in FIG. 14 is merely illustrative and does not limit the structure of the above electronic device. For example, the controller 140 may also include more or less components than those shown in FIG. 14, or have a different configuration than that shown in FIG.

The second memory 1404 can be configured to: store a software program of the application software and a module, such as a program instruction/module corresponding to the policy sending method in the embodiment of the present invention, and the second processor 1402 can be configured to: store in the second memory by running The software program and module in 1404, thereby performing various functional applications and data processing, that is, implementing the above method. The second memory 1404 can include a high speed random access memory, and can also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, Or other non-volatile solid state memory. In some examples, the second memory 1404 can further include memory remotely located relative to the second processor 1402, which can be connected to the controller 140 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The second transmission device 1406 can be configured to receive or transmit data via a network. The network instance described above may include a wireless network provided by a communication provider of the controller 140. In one example, the second transmission device 1406 includes a Network Interface Controller (NIC) that can be connected to other network devices through the base station to communicate with the Internet. In one example, the second transmission device 1406 can be a radio frequency (RF) module configured to communicate with the Internet wirelessly.

In this embodiment, a policy receiving method running on the controller is provided. FIG. 15 is a flowchart of a method for receiving a policy according to an embodiment of the present invention. As shown in FIG. 15, the process includes the following steps:

Step S1502: Receive a control strategy for controlling a network in which the layer is located;

Step S1504: Control the network in which the layer is located according to the received control policy.

By receiving the control strategy sent by the external device to continue control of the hierarchical network, the network at the hierarchical level is controlled, and the operating efficiency of the controller is improved.

Alternatively, the received control strategy can take a variety of forms. For example, the received control policy may be a control policy generated according to network resources in the control area of the controller. For another example, the received control policy may be a control policy for controlling the hierarchical network generated by the multi-domain controller generated by one or more sub-control policies of one or more sub-controllers in the multi-domain controller, where the one or The plurality of sub-control strategies are used to control the hierarchical network, and the sub-controller and the sub-control strategy have a one-to-one correspondence. The one or more sub-controllers may be at least one of the following: a single domain controller and a multi-domain controller. The control strategy for receiving is a control strategy for controlling the hierarchical network generated by the multi-domain controller generated by one or more sub-control policies respectively controlled by one or more sub-controllers in the multi-domain controller. Because the generated control strategy considers the control strategies of multiple sub-controllers in the multi-domain controller control area, the whole network resources are controlled from a global perspective, which avoids conflicts between different sub-controller resource controls and improves resource allocation. rationality.

Receiving one or more according to the multi-domain controller by the policy receiving method and the optional implementation manner The sub-controller controls the multi-domain controller generated by one or more sub-control strategies respectively controlled by the hierarchical network to control the hierarchical network, and the generated control strategy considers multiple sub-controls in the multi-domain controller control area The control strategy of the device controls the resources of the whole network from a global perspective, avoids conflicts between resource control of different sub-controllers, and improves the rationality of resource allocation.

Optionally, the control strategy for controlling the network in which the hierarchy is located may be received in a variety of manners. For example, multiple controllers may respectively receive, through an interface, a policy that is sent by an external system and that is controlled by the controller according to network resources in the area controlled by the controller. For another example, in a case where there are multiple control strategies, the receiving compiler obtains a control strategy obtained by aggregating a plurality of control policies. The receiving orchestrator obtains the control strategy after converging multiple control policies, which can conveniently manage the control strategy and improve the efficiency of the control strategy.

According to the embodiment of the present invention, in a case where there are multiple control strategies, the control controller obtains a control strategy obtained by aggregating a plurality of control policies, and the control strategy is aggregated by the assembler and sent to the corresponding controller, which is convenient for control. The transmission management of the policy improves the transmission efficiency of the control strategy.

Based on the foregoing embodiment and the optional implementation manners, in order to illustrate the entire process interaction of the policy receiving method, in the optional embodiment, a policy receiving method is provided. FIG. 16 is a flowchart of a method for receiving a policy according to an alternative embodiment of the present invention. As shown in FIG. 16, the process may include the following steps:

Step S1602: Receive a control strategy after the assembler aggregates the multiple control policies.

The received control policy may include at least one of the following: a network analysis policy, a network optimization policy, and a path calculation policy.

Step S1604: Determine, according to the received control policy, a control strategy for each sub-controller in the control area to control the hierarchical network in which it is located.

The SC controller can determine, according to the received control strategy, a control strategy of each sub-controller in the control area of the SC controller for the hierarchical network in which it is located. The SC controller may include: a control strategy for controlling the hierarchical network of the SC controller and the SC controller according to the received control policy. The control strategy of each sub-controller in the control area for its hierarchical network, or the control strategy that the SC controller controls its hierarchical network and the control strategy generated by the SC controller to control the hierarchical network it generates SC control The rules governing the control policy of each sub-controller in the control area. Of course, the rules herein can also be determined by the SC controller on the SC controller according to the network resource status in the control area of each sub-controller in its control area.

Step S1606: Send the determined control policy of each sub-controller to the corresponding sub-controller.

In the case where the sub-controller is a single domain controller, the SC controller may transmit the determined control policy of the sub-controller to the sub-controller. In the case where the sub-controller is a multi-domain controller, the SC controller may determine the control strategy of the multi-domain controller and the control strategy of one or more sub-controllers within the multi-domain controller control area (or generate The multi-domain controller controls the rules of one or more sub-controllers within the control region to send the sub-controller together.

Step S1608: Control the network in which the layer is located according to the received control policy.

This alternative embodiment has the following advantages:

1) Since the control strategy of the controller is to receive external reception, the resource management of the controller system resources is reduced, and the operating efficiency of the controller is improved;

2) The control strategy of the SDN controller takes into account the constraints of the whole network, and the optimized strategy is in line with the actual requirements of the existing network.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, portions of the embodiments of the present invention that are essential or contributing may be embodied in the form of a software product stored in a storage medium (eg, ROM/RAM, disk, optical disk), including The command is used to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the policy receiving method according to the embodiment of the present invention.

In this embodiment, a policy sending apparatus is also provided, which is configured to implement the foregoing embodiments and optional implementation manners, and has not been described again. As used hereinafter, the term "module" can implement any one or combination of software and hardware for a predetermined function. Although the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 17 is a structural block diagram of a policy sending apparatus according to an embodiment of the present invention. As shown in FIG. 17, the apparatus includes: a determining module 172 and a sending module 174. The device will be described below.

The determining module 172 is configured to: determine, according to network resources in the controller control area, a control policy for the controller to control the hierarchical network; the sending module 174 is configured to: connect to the determining module 172, and send the determined control policy. Give the controller.

FIG. 18 is a structural block diagram of a determining module 172 of a policy sending apparatus according to an embodiment of the present invention. As shown in FIG. 18, the determining module 172 may include an obtaining unit 182 and a determining unit 184. The determination module 172 will be described below.

The obtaining unit 182 is configured to: acquire one or more sub-control policies of one or more sub-controllers in the multi-domain controller control area, where the controller is a multi-domain controller, wherein the one or more sub-controls The policy is used to control the network in the hierarchy, and the sub-controller has a one-to-one correspondence with the sub-control policy. The determining unit 184 is configured to be connected to the acquiring unit 182, and determine the multi-domain according to the one or more sub-control policies. A control strategy for the controller to control the network in which the layer is located, wherein one or more of the sub-controllers are at least one of the following: a single domain controller, a multi-domain controller.

FIG. 19 is a structural block diagram of a sending module 174 of a policy sending apparatus according to an embodiment of the present invention. As shown in FIG. 19, the sending module 174 may include: a converging unit 192 and a sending unit 194. The transmitting module 174 will be described below.

The aggregation unit 192 is configured to: when the control policy is multiple, use the orchestrator to aggregate multiple control policies; and the sending unit 194 is configured to: connect to the aggregation unit 192, and combine the control strategies of the orchestrator Send to the controller.

Optionally, the foregoing control policy may include at least one of the following: a network analysis policy, and a network optimization Strategy, path calculation strategy.

It can be noted that the foregoing modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the above modules are all located in the same processor; or the above modules are in any combination. They are located in different processors.

In this embodiment, a policy receiving apparatus is also provided, which is configured to implement the foregoing embodiments and optional implementation manners, and has not been described again. As used hereinafter, the term "module" can implement any one or combination of software and hardware for a predetermined function. Although the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 20 is a structural block diagram of a policy receiving apparatus according to an embodiment of the present invention. As shown in FIG. 20, the apparatus includes: a receiving module 202 and a control module 204. The device will be described below.

The receiving module 202 is configured to: receive a control policy for controlling the network in which the layer is located; the control module 204 is configured to: connect to the receiving module 202, and control the layer network according to the received control policy.

FIG. 21 is a structural block diagram of a receiving module 202 of a policy receiving apparatus according to an embodiment of the present invention. As shown in FIG. 21, the receiving module 202 may include: a first receiving unit 212. The receiving module 202 will be described below.

The first receiving unit 212 is configured to: receive, by the one or more sub-control policies of one or more sub-controllers in the control area of the multi-domain controller, a control policy of the multi-domain controller to control the network in which the layer is located, where One or more sub-control strategies are used to control the network in the hierarchy, and the sub-controller has a one-to-one correspondence with the sub-control policies, and one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller .

FIG. 22 is a structural block diagram 2 of a receiving module 202 of a policy receiving apparatus according to an embodiment of the present invention. As shown in FIG. 22, the receiving module 202 may include: a second receiving unit 222. The receiving module 202 will be described below.

The second receiving unit 222 is configured to: when the control policy is multiple, receive the control policy obtained by the orchestrator after collecting the multiple control policies.

A controller is also provided in this embodiment. FIG. 23 is a structural block diagram of a controller according to an embodiment of the present invention. As shown in FIG. 23, the controller includes the policy receiving device 232 in the above embodiment.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1: determining, according to network resources in the controller control area, a control strategy for the controller to control the network in which the layer is located;

S2, sending the determined control strategy to the controller.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

According to the network resources in the control area of the controller, the control strategy for determining that the controller controls the network in the hierarchy may include:

S1. If the controller is a multi-domain controller, acquire one or more sub-control policies of one or more sub-controllers in the multi-domain controller control area, where one or more sub-control policies are used for the The network is separately controlled, and the sub-controller and the sub-control strategy have a one-to-one correspondence;

S2. Determine, according to the one or more sub-control policies, a control policy for controlling the multi-domain controller to control the hierarchical network, where the one or more sub-controllers are at least one of the following: a single domain controller, and a multi-domain controller.

Optionally, the storage medium is further configured to store program code for performing the following steps: the above control policy comprises at least one of: a network analysis policy for analyzing network resources, a network for optimizing network resources An optimization strategy, a path calculation strategy for calculating a path in a hierarchical network where the controller is located.

In the case where the control strategy includes a network analysis policy, according to the network within the controller control area Resources, control strategies that determine the controller's control over the network in which it is located include:

S1. Group, according to resource attributes of network resources in the controller control area, network resources, to obtain one or more network resource groups;

S2, according to the network resource resource attribute of each network resource group in the grouped one or more network resource groups, the indicator parameter of the analysis indicator used for analyzing the network resource, and the predetermined index calculation formula, determining the grouped The indicator value of the network resource group;

S3, determining that the control policy is at least one of the following: generating an alarm record according to the determined indicator value, the preset indicator value alarm interval, and the alarm level; and according to any one or a combination of the resource grouping object, the resource attribute, and the analysis indicator, Generate a report; determine the topological relationship of network resources in the controller control area according to the association relationship of the network resources.

In the case that the control strategy includes the network optimization strategy, according to the network resources in the controller control area, the control strategy for determining the controller to control the hierarchical network includes:

S1, determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted; respectively determining a first bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel; Determining the above control strategy as: a first bandwidth adjustment value according to the determined one or more pseudowires, or a tunnel, or each of the pseudowires and the tunnel, the port and one or more pseudowires, or tunnels, or pseudowires Determining the relationship between each of the tunnels and the preset bandwidth adjustment value of the port, and determining a second bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel;

or,

S2, determining a set of ports to be adjusted for data transmission; respectively obtaining a port flow rate of each port in the port set, a preset bandwidth guaranteed bandwidth value, and a preset bandwidth utilization; determining the foregoing control strategy is: Obtaining the port flow rate of each port bandwidth in the obtained port set, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization, and determining the bandwidth convergence ratio of each port in the port set;

or,

S3, determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted; respectively determining a first bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel; Determining the above control strategy as: a first bandwidth adjustment value according to the determined one or more pseudowires, or a tunnel, or each of the pseudowires and the tunnel, the port and one or more pseudowires, or tunnels, or pseudowires Determining the relationship between each of the tunnels and the preset bandwidth adjustment value of the port, determining a second bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel; determining the data to be adjusted for the data The set of ports to be transmitted; respectively obtain the port flow rate of each port in the port set, the bandwidth value of the preset bandwidth guarantee, and the preset bandwidth utilization; determine the above control strategy as: according to the bandwidth of each port in the obtained port set The port flow rate, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization determine the bandwidth convergence ratio of each port in the port set.

In the case that the control strategy includes the path calculation strategy, according to the network resources in the controller control area, the control strategy for determining the controller to control the hierarchical network includes:

S1, acquiring network resource data in a hierarchical network where the controller is located, and a service path corresponding to the network resource data;

S2. The foregoing control strategy is determined to: determine a path calculation result according to a calculation reference indicator used to determine a path in the hierarchical network where the controller is located, and a service path corresponding to the network resource data.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor executes, according to the stored program code in the storage medium, determining, according to the network resource in the controller control area, a control strategy for the controller to control the hierarchical network; and determining the determined control The policy is sent to the controller.

Optionally, in this embodiment, the processor executes according to the stored program code in the storage medium: acquiring one or more sub-controllers in the multi-domain controller control area if the controller is a multi-domain controller One or more sub-control strategies, wherein one or more sub-control strategies are used to separately control the hierarchical network, and the sub-controller and the sub-control strategy have a one-to-one correspondence; and according to the acquired one or more sub-control strategies, determine A control strategy for controlling a hierarchical network by a multi-domain controller, wherein one or more sub-controllers are at least one of the following: a single domain controller, and a multi-domain controller.

Optionally, in this embodiment, the processor is executed according to the stored program code in the storage medium: the control policy includes at least one of the following: a network analysis policy for analyzing the network resource, and is used to optimize the network resource. Network optimization strategy, a path calculation strategy for calculating the path in the hierarchical network where the controller is located.

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, in a case that the control policy includes a network analysis policy, determining, according to network resources in the controller control area, the controller pair level The control strategy of the network control includes: grouping network resources according to resource attributes of network resources in the controller control area to obtain one or more network resource groups; according to each of the grouped one or more network resource groups The network resource resource attribute of the network resource group, the indicator parameter of the analysis indicator for analyzing the network resource, and the predetermined index calculation formula, determining the index value of the network resource group after the grouping; determining that the foregoing control strategy is at least A: generating an alarm record according to the determined indicator value, the preset indicator value alarm interval and the alarm level; generating a report according to any one or a combination of the resource grouping object, the resource attribute, and the analysis index; according to the network resource association relationship , determining the topology of the network resources in the controller control area .

Optionally, in this embodiment, the processor is executed according to the stored program code in the storage medium: in a case that the control policy includes a network optimization policy, determining, according to network resources in the controller control area, the controller pair level The control strategy of the network control includes: determining a pseudowire for data transmission to be adjusted, or a tunnel, or a pseudowire and a tunnel; respectively determining one or more pseudowires, or tunnels, or each of the pseudowires and the tunnels a first bandwidth adjustment value; determining that the control strategy is: a first bandwidth adjustment value according to the determined one or more pseudowires, or a tunnel, or each of the pseudowires and the tunnel, the port and one or more pseudowires, or a tunnel, or an association relationship between each of the pseudowires and the tunnel, and a preset bandwidth adjustment value of the port, determining a second bandwidth adjustment value of each of the one or more pseudowires, or the tunnel, or the pseudowire and the tunnel; or Determining a set of ports to be adjusted for data transmission; respectively obtaining a port flow rate of each port in the port set, a preset bandwidth guaranteed bandwidth value, and a preset bandwidth The usage rate is determined by: determining the bandwidth convergence of each port in the port set according to the port flow rate of each port bandwidth in the obtained port set, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization. Ratio; or, determine the pseudowire, or tunnel, or pseudowire and tunnel for data transmission to be adjusted; determine one or more pseudowires, or tunnels, or pseudowires and tunnels, respectively. a first bandwidth adjustment value; determining the foregoing control strategy as: a first bandwidth adjustment value according to the determined one or more pseudowires, or a tunnel, or each of the pseudowires and the tunnel, the port and one or more pseudowires Or a tunnel, or an association between each of the pseudowires and the tunnel, and a preset bandwidth adjustment value of the port, determining a second bandwidth adjustment value for each of one or more pseudowires, or tunnels, or pseudowires and tunnels Determining a set of ports to be adjusted for data transmission; respectively obtaining a port flow rate of each port in the port set, a preset bandwidth guaranteed bandwidth value, and a preset bandwidth utilization; determining the above control strategy is: obtaining according to The port flow rate of each port bandwidth in the port set, the preset bandwidth guaranteed bandwidth value, and the preset bandwidth utilization determine the bandwidth convergence ratio of each port in the port set.

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, in a case that the control policy includes a path calculation policy, determining, according to network resources in the controller control area, the controller pair level The control strategy of the network control includes: acquiring network resource data in the hierarchical network where the controller is located, and a service path corresponding to the network resource data; determining the foregoing control strategy is: calculating a reference indicator according to the path used to determine the hierarchical network of the controller And the service path corresponding to the network resource data, and the result of the path calculation is determined.

For example, the examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Embodiments of the present invention also provide another storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, receiving a control strategy for controlling a network at a level;

S2, according to the received control strategy, controls the network at the level.

The control strategies for receiving control over the network in which they are located include:

Receiving a control strategy for controlling a hierarchical network by a multi-domain controller generated according to one or more sub-control policies of one or more sub-controllers in a multi-domain controller control area, wherein one or more sub-control strategies are used for The hierarchical network is separately controlled, and the sub-controller and the sub-control strategy have a one-to-one correspondence, and one or more sub-controllers are at least one of the following: a single domain controller and a multi-domain controller.

In the case where there are multiple control strategies, the receiving controller obtains a control strategy obtained by aggregating a plurality of control policies.

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, receiving a control policy for controlling the network in which the layer is located; and controlling the layer network according to the received control policy.

Optionally, in this embodiment, the processor is executed according to the stored program code in the storage medium: receiving a control policy for controlling the network in which the layer is located includes: receiving one or more sub-controllers according to the multi-domain controller A control strategy for controlling a hierarchical network by a multi-domain controller generated by one or more sub-control strategies of the controller, wherein one or more sub-control strategies are used to separately control the hierarchical network, the sub-controller and the sub-control strategy For a one-to-one correspondence, one or more sub-controllers are at least one of the following: a single domain controller, a multi-domain controller.

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, the receiving the control policy for controlling the network in which the layer is located includes: receiving the orchestrator in a case where the control policy is multiple A control strategy obtained by converging multiple control strategies.

Those skilled in the art will appreciate that the above-described modules or steps can be implemented in a general-purpose computing device, which can be centralized on a single computing device or distributed over a network of multiple computing devices, optionally The program code executable by the computing device can be implemented, such that they can be stored in a storage device for execution by the computing device, and in some cases, the illustrated or described The steps are either made separately into different integrated circuit modules, or a plurality of modules or steps are made into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, processor, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

A person skilled in the art can understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application. The scope of protection of this application is defined by the scope defined by the claims.

Industrial applicability

Claims

A method of sending a policy, including:

Determining, according to network resources in the controller control area, a control strategy for controlling the controller to control the hierarchical network;

The determined control policy is sent to the controller.
The method according to claim 1, wherein the determining, according to the network resource in the controller control area, the control policy that the controller controls the network in which the layer is located includes:

Acquiring one or more sub-control policies of one or more sub-controllers within the multi-domain controller control region if the controller is a multi-domain controller, wherein the one or more sub-control policies are Controlling, respectively, the hierarchical network, the sub-controller and the sub-control strategy have a one-to-one correspondence;

Determining, according to the one or more sub-control policies, a control policy for controlling the multi-domain controller to control the hierarchical network, where the one or more sub-controllers are at least one of the following: a single domain controller, multiple domains Controller.
The method according to any one of claims 1 to 2, wherein the control policy comprises at least one of: a network analysis strategy for analyzing network resources, and a network optimization strategy for optimizing network resources. a path calculation strategy for calculating a path in the hierarchical network where the controller is located.
The method according to claim 3, wherein, in a case that the control policy includes the network analysis policy, determining, according to the network resource in the controller control area, that the controller performs a hierarchical network on a network The control strategy of the control includes:

And grouping the network resources according to resource attributes of the network resources in the controller control area to obtain one or more network resource groups;

Determining the indexed parameter of the analysis indicator used for analyzing the network resource according to the network resource resource attribute of each network resource group in the one or more network resource groups after the grouping, and the predetermined index calculation formula, determining the network after the grouping The indicator value of the resource group;

Determining that the control policy is at least one of: generating an alarm record according to the determined indicator value, a preset indicator value alarm interval, and an alarm level; Generating a report according to any one or a combination of the source attribute and the analysis indicator; determining a topological relationship of the network resource in the controller control area according to the association relationship of the network resource.
The method according to claim 3, wherein, in a case that the control policy includes the network optimization policy, determining, according to the network resource in the controller control area, that the controller performs a hierarchical network on a network The control strategy of the control includes:

Determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted; determining a first bandwidth adjustment value of each of the one or more of the pseudowire, or the tunnel, or the pseudowire and the tunnel, respectively; Determining the control policy as: according to the determined one or more of the pseudowires, or the tunnel, or the first bandwidth adjustment value of each of the pseudowires and the tunnel, the port and one or more of the pseudowires, Or a tunnel, or an association relationship between each of the pseudowire and the tunnel, and a preset bandwidth adjustment value of the port, determining one or more of the pseudowire, or the tunnel, or the second of each of the pseudowire and the tunnel Bandwidth adjustment value;

or,

Determining a set of ports for data transmission to be adjusted; respectively obtaining a port flow rate of each port in the port set, a preset bandwidth guaranteed bandwidth value, and a preset bandwidth utilization; determining the control policy as: Determining the bandwidth convergence of each port in the port set according to the obtained port flow rate of the port bandwidth in the port set, the bandwidth value of the preset bandwidth guarantee, and the preset bandwidth utilization rate. ratio;

or,

Determining a pseudowire, or a tunnel, or a pseudowire and a tunnel for data transmission to be adjusted; determining a first bandwidth adjustment value of each of the one or more of the pseudowire, or the tunnel, or the pseudowire and the tunnel, respectively; Determining the control policy as: according to the determined one or more of the pseudowires, or the tunnel, or the first bandwidth adjustment value of each of the pseudowires and the tunnel, the port and one or more of the pseudowires, Or a tunnel, or an association relationship between each of the pseudowire and the tunnel, and a preset bandwidth adjustment value of the port, determining one or more of the pseudowire, or the tunnel, or the second of each of the pseudowire and the tunnel a bandwidth adjustment value; determining a port set to be adjusted for data transmission; respectively obtaining a port flow rate of each port in the port set, a preset bandwidth guaranteed bandwidth value, and a preset bandwidth utilization; determining the The control strategy is: determining each of the port sets according to the obtained port flow rate of the port bandwidth in the port set, the bandwidth value of the preset bandwidth guarantee, and the preset bandwidth utilization. end Bandwidth convergence ratio.
The method according to claim 3, wherein, in a case that the control policy includes the path calculation policy, determining, according to the network resource in the controller control area, that the controller performs a hierarchical network on a network The control strategy of the control includes:

Obtaining network resource data in the hierarchical network where the controller is located, and a service path corresponding to the network resource data;

Determining the control policy is: determining a result of the path calculation according to the calculation reference indicator used to determine the path in the hierarchical network where the controller is located, and the service path corresponding to the network resource data.
A strategy receiving method includes:

Receiving a control strategy for controlling the network in which the layer is located;

Controlling the hierarchical network according to the received control strategy.
The method of claim 7, wherein receiving a control strategy for controlling the network in which the layer is located comprises:

Receiving, by the multi-domain controller generated according to one or more sub-control policies of one or more sub-controllers in a multi-domain controller control region, the control policy for controlling a hierarchical network, wherein the one or more sub-controls The control policy is used to separately control the network in which the layer is located, the sub-controller has a one-to-one correspondence with the sub-control policy, and the one or more sub-controllers are at least one of the following: a single domain controller, multiple domains Controller.
The method of claim 7, wherein receiving the control policy for controlling the network in which the layer is located comprises:

In the case that the control strategy is multiple, the control controller obtains the control policy obtained after the multiple control policies are aggregated.
A policy sending device includes:

Determining a module, configured to: determine, according to network resources in the controller control area, a control strategy for the controller to control the hierarchical network;

The sending module is configured to: send the determined control policy to the controller.
The apparatus of claim 10, wherein the determining module comprises:

An obtaining unit, configured to: acquire one or more sub-control policies of one or more sub-controllers in the multi-domain controller control area, where the controller is a multi-domain controller, wherein the one Or a plurality of sub-control policies are used to separately control the network in the hierarchy, and the sub-controller has a one-to-one correspondence with the sub-control policies;

a determining unit, configured to: determine, according to the one or more sub-control policies, a control policy for controlling the multi-domain controller to control the hierarchical network, where the one or more sub-controllers are at least one of the following: Domain controller, multi-domain controller.
A policy receiving device includes:

The receiving module is configured to: receive a control strategy for controlling a network at a level;

The control module is configured to: control the network at the level according to the received control policy.
The apparatus of claim 12, wherein the receiving module comprises:

a first receiving unit, configured to: receive, by the multi-domain controller generated according to one or more sub-control policies of one or more sub-controllers in a multi-domain controller control area, the control policy for controlling a hierarchical network, The one or more sub-control policies are used to control the hierarchical network, the sub-controller has a one-to-one correspondence with the sub-control policies, and the one or more sub-controllers are at least one of the following : Single domain controller, multi-domain controller.
The apparatus of claim 12, wherein the receiving module comprises:

The second receiving unit is configured to: when the control policy is multiple, receive the control policy obtained after the orchestrator aggregates the multiple control policies.
A controller comprising the policy receiving device of any one of claims 12 to 14.