CN115102898B - Communication method, device and storage medium - Google Patents
Communication method, device and storage medium Download PDFInfo
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Abstract
The invention provides a communication method, equipment and a storage medium, relates to the technical field of communication, and is used for better adapting to the change of forwarding service and improving user experience. The method comprises the following steps: the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; the programmable white-box universal forwarding device receives a resource adjustment strategy sent by the SDN controller and adjusts forwarding resources of a plurality of forwarding services according to the resource adjustment strategy; the resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communications method, apparatus, and storage medium.
Background
The network forwarding equipment comprises a switch, a router and the like, and can realize forwarding of the service in the network. Specifically, in order to implement forwarding of a service, forwarding logic is generally required to be preset in a network forwarding device, where the forwarding logic includes a plurality of forwarding service types and forwarding resources corresponding to each forwarding service type. Further, the network forwarding device forwards the service according to preset forwarding logic.
However, because the use condition of the user for different services is continuously changed, the network forwarding device in the prior art cannot flexibly adapt to the change of each forwarding service according to the fixed forwarding logic, so that the user experience is reduced.
Disclosure of Invention
The invention provides a communication method, a device and a storage medium, which are used for better adapting to the change of forwarding service and improving user experience.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, a communication method is provided, applied to a service forwarding system, where the service forwarding system includes a programmable white-box generic forwarding device and a software defined network SDN controller, the method includes: the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; the programmable white-box universal forwarding device receives a resource adjustment strategy sent by the SDN controller and adjusts forwarding resources of a plurality of forwarding services according to the resource adjustment strategy; the resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services.
Optionally, the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the method further includes: the method comprises the steps that a programmable white-box universal forwarding device determines the change condition of forwarding resource usage of a first forwarding service in preset time; the first forwarding service is any forwarding service in a plurality of forwarding services; and the programmable white-box universal forwarding equipment determines the service state of the first forwarding service according to the change condition.
Optionally, the changing condition includes a forwarding resource usage changing amount, and the programmable white-box universal forwarding device determines a service state of the first forwarding service according to the changing condition, including: under the condition that the using variable quantity of forwarding resources is larger than a preset threshold value, the programmable white-box universal forwarding equipment determines a first forwarding service to be a retransmission service; and under the condition that the forwarding resource usage variation is smaller than or equal to a preset threshold value, the programmable white-box universal forwarding device determines that the first forwarding service is a light-load service.
Optionally, adjusting forwarding resources of the plurality of forwarding services according to a resource adjustment policy includes: the programmable white-box universal forwarding device increases available forwarding resources of the heavy-load service according to the first preset increment and decreases available forwarding resources of the light-load service according to the second preset increment.
In a second aspect, a communication method is provided, applied to a service forwarding system, where the service forwarding system includes a programmable white-box generic forwarding device and a software defined network SDN controller, and the method includes: the SDN controller receives forwarding resource information of a plurality of forwarding services sent by the programmable white-box universal forwarding equipment; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; and the SDN controller determines a resource adjustment strategy according to the forwarding resource information of the forwarding services and sends the resource adjustment strategy to the programmable white-box universal forwarding equipment.
Optionally, the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the SDN controller determines a resource adjustment policy according to forwarding resource information of the plurality of forwarding services, including: the SDN controller determines the service state of each forwarding service and determines a resource adjustment strategy according to the service state of each forwarding service; the resource adjustment strategy is used for indicating the programmable white-box universal forwarding device to increase the available forwarding resources of the heavy-load service according to the first preset increment and reduce the available forwarding resources of the light-load service according to the second preset increment.
In a third aspect, a programmable white-box universal forwarding device is provided and applied to a service forwarding system, wherein the service forwarding system comprises the programmable white-box universal forwarding device and a software defined network SDN controller, and the programmable white-box universal forwarding device comprises a sending unit, a receiving unit and a processing unit; a sending unit, configured to send forwarding resource information of a plurality of forwarding services to an SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; the receiving unit is used for receiving the resource adjustment strategy sent by the SDN controller by the programmable white-box universal forwarding device, and the processing unit is used for adjusting forwarding resources of a plurality of forwarding services according to the resource adjustment strategy; the resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services.
Optionally, the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the processing unit is further configured to: determining the change condition of forwarding resource usage of a first forwarding service in a preset time; the first forwarding service is any forwarding service in a plurality of forwarding services; and determining the service state of the first forwarding service according to the change condition.
Optionally, the change condition includes a forwarding resource usage change amount, and the processing unit is specifically configured to: under the condition that the use variation of forwarding resources is larger than a preset threshold value, determining a first forwarding service to be a reloading service; and under the condition that the forwarding resource use variation is smaller than or equal to a preset threshold value, determining that the first forwarding service is a light-load service.
Optionally, the processing unit is specifically configured to: and increasing the available forwarding resources of the heavy-load service according to the first preset increment, and reducing the available forwarding resources of the light-load service according to the second preset increment.
In a fourth aspect, a software defined network SDN controller is provided and applied to a service forwarding system, where the service forwarding system includes a programmable white-box generic forwarding device and an SDN controller, and the SDN controller includes a receiving unit, a determining unit and a sending unit; a receiving unit, configured to receive forwarding resource information of a plurality of forwarding services sent by a programmable white-box universal forwarding device by using an SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; a determining unit, configured to determine a resource adjustment policy according to forwarding resource information of a plurality of forwarding services by using the SDN controller; and the sending unit is used for sending the resource adjustment strategy to the programmable white-box universal forwarding equipment.
Optionally, the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the determining unit is specifically configured to: determining the service state of each forwarding service, and determining a resource adjustment strategy according to the service state of each forwarding service; the resource adjustment strategy is used for indicating the programmable white-box universal forwarding device to increase the available forwarding resources of the heavy-load service according to the first preset increment and reduce the available forwarding resources of the light-load service according to the second preset increment.
In a fifth aspect, there is provided a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the communication method of the first aspect or the communication method of the second aspect.
In a sixth aspect, there is provided a communication device comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the communication device, cause the communication device to perform the communication method of the first aspect or the communication method of the second aspect.
The technical scheme provided by the invention has at least the following beneficial effects: the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller; because the forwarding resource information is used for reflecting the use condition and the forwarding resource requirement of the forwarding resource, the programmable white-box universal forwarding device can timely report the use condition and the resource requirement of each forwarding service to the SDN controller. Further, the programmable white-box universal forwarding device receives the resource adjustment policy sent by the SDN controller, and because the resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services, the programmable white-box universal forwarding device can adjust forwarding resources of the plurality of forwarding services according to the resource adjustment policy so as to adapt to changes of each forwarding service, so that experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic service forwarding diagram of a programmable white-box universal forwarding device in the related art;
fig. 2 is a schematic structural diagram of a service forwarding system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a communication method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of resource adjustment according to an embodiment of the present invention;
fig. 5 is a second flow chart of a communication method according to an embodiment of the present invention;
fig. 6 is a flow chart diagram III of a communication method according to an embodiment of the present invention;
fig. 7 is a flow chart of a communication method according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a general forwarding device for a programmable white-box according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an SDN controller according to an embodiment of the present invention;
Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
It should be noted that, in the embodiment of the present invention, "english: of", "corresponding" and "corresponding" may sometimes be used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
In order to clearly describe the technical solution of the embodiments of the present invention, in the embodiments of the present invention, the terms "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect, and those skilled in the art will understand that the terms "first", "second", etc. are not limited in number and execution order.
Before explaining the embodiments of the present invention in detail, some related technical terms and related technologies related to the embodiments of the present invention are described.
Programmable white-box universal forwarding device: the device can be deployed in a communication cloud to replace the traditional network forwarding device, the defects of single function and solidification of the traditional network forwarding device are overcome, dynamic coding of logic flow can be carried out through an open-source programming language, and forwarding of a plurality of forwarding services is realized through the open-source programming language.
Software defined network (Software Defined Networking, SDN): the software defined network is a novel network innovation architecture and is an implementation mode of network virtualization, and the core technology is that the control plane of the programmable white-box universal forwarding device is separated from the data plane, and the programmable white-box universal forwarding device is controlled in a centralized manner through an SDN controller, so that flexible control of each forwarding service is realized, and the network becomes more intelligent as a pipeline.
In the related art, forwarding logic is preset in the programmable white-box universal forwarding device through the SDN controller, and the forwarding logic includes a plurality of forwarding service types, forwarding resources corresponding to the forwarding service types, and the like. Furthermore, the programmable white-box universal forwarding device realizes the forwarding of the service according to preset forwarding logic.
Fig. 1 is a schematic diagram of service forwarding of a programmable white-box universal forwarding device in the related art. The programmable white-box universal forwarding device determines a plurality of forwarding service types (forwarding service 1, forwarding service 2, forwarding service 3, … … and forwarding service n) and forwarding resources corresponding to the forwarding service types according to preset forwarding logic so as to forward a plurality of services with different service types. Each forwarding service in fig. 1 represents a service under a type of network service including, but not limited to: interactive (switch) traffic, broadband network gateway (broadband network gateway, BNG) traffic, user plane function (user plan function, UPF) traffic, carrier Grade NAT (CGN) traffic, etc.
However, because the use condition of the user for different services is continuously changed, the programmable white-box universal forwarding device cannot flexibly adapt to the change of each forwarding service according to the fixed forwarding logic. For example, the usage amount of the forwarding service 1 by the user increases, however, the programmable white-box universal forwarding device still forwards the forwarding service 1 according to the inherent forwarding resource of the forwarding service 1, so that the inherent forwarding resource of the forwarding service 1 cannot adapt to the forwarding of the forwarding service 1, and the user experience is reduced. For another example, the usage amount of the forwarding service 2 by the user is reduced, however, the programmable white-box universal forwarding device still forwards the forwarding service 2 according to the inherent forwarding resources of the forwarding service 2, so that the inherent forwarding resources of the forwarding service 2 are largely idle, and the forwarding resources are wasted.
The communication method provided by the embodiment of the invention is used for solving the problem that the user experience is reduced because the network forwarding equipment in the related technology cannot flexibly adapt to the change of each forwarding service according to the fixed forwarding logic. The communication method provided by the embodiment of the invention can be applied to a service forwarding system, and fig. 2 shows a schematic structural diagram of the service forwarding system. As shown in fig. 2, the service forwarding system 10 includes a programmable white-box generic forwarding device 11 and an SDN controller 12. Wherein the programmable white-box generic forwarding device 11 is connected to the SDN controller 12. The programmable white-box universal forwarding device 11 and the SDN controller 12 may be connected in a wired manner or may be connected in a wireless manner, which is not limited in the embodiment of the present invention.
Optionally, the programmable white-box generic forwarding device 11 includes a first central processing unit (central processing unit, CPU), a programmable forwarding chip, and a second CPU. The first CPU is configured to receive forwarding logic set by the SDN controller. The programmable forwarding chip is used for forwarding the plurality of forwarding services according to forwarding logic in the first CPU. The second CPU is used for determining forwarding resource information of the plurality of forwarding services and sending the forwarding resource information of the plurality of forwarding services to the SDN controller.
Fig. 3 is a flow diagram illustrating a method of communication according to some example embodiments. In some embodiments, the above communication method may be applied to a service forwarding system as shown in fig. 2.
As shown in fig. 3, the communication method provided in the embodiment of the present invention includes the following S201-S204.
S201, the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller.
The forwarding resource information is used for reflecting the use condition of forwarding resources and the requirement of forwarding resources.
As a possible implementation manner, the programmable forwarding chip in the programmable white-box universal forwarding device reports the forwarding resource occupation amount and the forwarding resource remaining amount of each forwarding service to the second CPU in the programmable white-box universal forwarding device. And the second CPU evaluates the forwarding services according to the preset resource evaluation algorithm according to the occupied amount of forwarding resources and the residual amount of forwarding resources of the forwarding services to obtain forwarding resource information of the forwarding services. Further, the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller through a preset interface.
It should be noted that the programmable white-box universal forwarding device may periodically send forwarding resource information of a plurality of forwarding services to the SDN controller, or may also send forwarding resource information of a plurality of forwarding services to the SDN controller, which is not limited by the embodiment of the present invention.
In practical application, the programmable white-box universal forwarding device may send forwarding resource information of a plurality of forwarding services to the SDN controller through an extended memory management (run) interface.
The second CPU can determine the service condition of the forwarding resources of each forwarding service through the current occupation amount of the forwarding resources and the residual amount of the forwarding resources of each forwarding service. The second CPU can also determine the change condition of the forwarding resources of each forwarding service through the received occupation amount of the forwarding resources and the residual amount of the forwarding resources of each forwarding service at a plurality of time points, and predict the forwarding resource requirements of each forwarding service according to the change condition of the forwarding resources of each forwarding service, thereby forming forwarding resource information of a plurality of forwarding services. The forwarding resource requirement may be a specific forwarding resource requirement amount, or may be a requirement state (such as a requirement or no requirement), which is not limited by the embodiment of the present invention.
The forwarding resources may refer to forwarding tables (forwarding information base, FIB) or routing tables (routing information base, RIB), or may be other resources capable of carrying traffic forwarding, and the embodiment of the present invention does not limit the form of the specific forwarding resources.
Correspondingly, the SDN controller receives forwarding resource information of a plurality of forwarding services sent by the programmable white-box universal forwarding device.
S202, the SDN controller determines a resource adjustment strategy according to forwarding resource information of a plurality of forwarding services.
As a possible implementation manner, the SDN controller inputs forwarding resource information of a plurality of forwarding services into a pre-trained policy generation model, and outputs a resource adjustment policy.
It should be noted that, the policy generation model is trained by the operation and maintenance personnel in advance and stored in the SDN controller, and the policy generation model is obtained by training according to the plurality of sample forwarding resource information and the policy labels corresponding to the plurality of sample forwarding resource information.
As another possible implementation manner, the resource usage condition and the resource requirement of each forwarding service of the SDN controller determine a resource adjustment policy.
In practical application, the content of the resource adjustment policy may include the resource optimization amount of each forwarding service, or may include the resource adjustment direction corresponding to each forwarding service (for example, the part of the resources corresponding to the forwarding service 1 are adjusted to the forwarding service 2).
S203, the SDN controller sends a resource adjustment strategy to the programmable white-box universal forwarding device.
As a possible implementation manner, the SDN controller sends a resource adjustment policy to the programmable white-box generic forwarding device through a preset interface.
Illustratively, the SDN controller sends the resource adjustment policy to the programmable white-box generic forwarding device over an SDN interface.
Correspondingly, the programmable white-box universal forwarding device receives a resource adjustment policy sent by the SDN controller.
S204, the programmable white-box universal forwarding device adjusts forwarding resources of a plurality of forwarding services according to the resource adjustment strategy.
The resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services.
As a possible implementation manner, the programmable white-box universal forwarding device receives a resource adjustment policy sent by the SDN controller through the first CPU, and the first CPU controls the programmable forwarding chip to adjust forwarding resources of the plurality of forwarding services according to the resource adjustment policy.
For example, as shown in fig. 4, a manner in which a programmable white-box generic forwarding device adjusts forwarding resources for multiple forwarding services according to a resource adjustment policy is shown. The programmable white-box universal forwarding device comprises forwarding service 1 (switch service), forwarding service 2 (BNG service), forwarding service 3 (UPF service), … … and forwarding service n (CGN service). The programmable white-box universal forwarding device allocates part of forwarding resources of forwarding service n to forwarding service 3 according to the resource adjustment policy.
Optionally, the programmable forwarding switching chip supports multiple parallel independent logics, and the multiple parallel logics are dynamically combined and separated according to service requirements. The programmable white-box universal forwarding device ages the used appearance of the forwarding service n according to the missed time according to the resource adjustment strategy, changes the appearance into an empty appearance after aging, restores the unused resource, and distributes the unused resource to the forwarding service 3. The technical scheme provided by the embodiment of the invention at least has the following beneficial effects: the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller; because the forwarding resource information is used for reflecting the use condition and the forwarding resource requirement of the forwarding resource, the programmable white-box universal forwarding device can timely report the use condition and the resource requirement of each forwarding service to the SDN controller. Further, the programmable white-box universal forwarding device receives the resource adjustment policy sent by the SDN controller, and because the resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services, the programmable white-box universal forwarding device can adjust forwarding resources of the plurality of forwarding services according to the resource adjustment policy so as to adapt to changes of each forwarding service, so that experience of a user is improved.
In one design, as shown in fig. 5, the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and in order to obtain forwarding resource information of each forwarding service, the communication method provided in the embodiment of the present invention further includes the following steps S301 to S302.
S301, the programmable white-box universal forwarding device determines the change condition of forwarding resource usage of the first forwarding service within a preset time.
The first forwarding service is any forwarding service in a plurality of forwarding services.
As a possible implementation manner, the programmable forwarding chip in the programmable white-box universal forwarding device sends the resource usage of the first forwarding service at the first moment and the resource usage of the first forwarding service at the second moment to the second PCU. The first time is the starting time of the preset time, and the second time is the ending time of the preset time. Further, the second PCU determines a change condition of forwarding resource usage of the first forwarding service within a preset time according to a resource usage of the first forwarding service at the first time and a resource usage of the first forwarding service at the second time.
In practical application, the change condition of the forwarding resource usage may be a change amount of the forwarding resource usage, or may be a change trend (for example, an ascending trend or a descending trend) of the forwarding resource usage.
As another possible implementation manner, the programmable forwarding chip in the programmable white-box universal forwarding device sends the resource usage of the first forwarding service at the first time and the resource usage of the first forwarding service at the second time to the second PCU. The first time is the starting time of the preset time, and the second time is the ending time of the preset time. Further, the second PCU determines a difference between the resource usage amount of the first forwarding service at the first time and the resource usage amount of the first forwarding service at the second time as a forwarding resource usage variation amount of the first forwarding service within a preset time, and uses the forwarding resource usage variation amount as a forwarding resource usage variation condition of the first forwarding service within the preset time.
As another possible implementation manner, the programmable white-box universal forwarding device determines the forwarding resource usage variable quantity of the first forwarding service in a preset time according to the forwarding resource usage variable quantity of the first forwarding service in the current period, the forwarding resource usage variable quantity of the first forwarding service in the previous period and a preset formula, and takes the forwarding resource usage variable quantity as the forwarding resource usage variable condition of the first forwarding service in the preset time. The current period and the last period are all time periods in a preset time.
The preset formula satisfies: forwarding resource usage change amount = last cycle forwarding resource usage change amount x + single forwarding resource size exp (current cycle forwarding resource usage change amount) ×log (0.8). Wherein x is a weight coefficient, 0< x <1, the previous period forwarding resource usage variable quantity represents the number of the previous period forwarding table, the current period forwarding resource usage variable quantity represents the number of the current period forwarding table, and the single forwarding resource occupation quantity is the size of the single forwarding table.
S302, the general forwarding device of the programmable white box determines the service state of the first forwarding service according to the change condition.
The forwarding resource information comprises a service state, and the service state comprises a heavy-load service or a light-load service.
As a possible implementation manner, the programmable white-box universal forwarding device compares the forwarding resource usage variation of the first forwarding service with a preset threshold value to determine whether the forwarding resource usage variation is greater than the preset threshold value. Under the condition that the using variable quantity of forwarding resources is larger than a preset threshold value, the programmable white-box universal forwarding equipment determines a first forwarding service to be a retransmission service; and under the condition that the forwarding resource usage variation is smaller than or equal to a preset threshold value, the programmable white-box universal forwarding device determines that the first forwarding service is a light-load service. Further, the programmable white-box universal forwarding device sends the service state of the first forwarding service to the SDN controller as forwarding resource information.
As another possible implementation manner, if the trend of the forwarding resource usage of the first forwarding service is an upward trend, the programmable white-box universal forwarding device determines that the first forwarding service is a reloading service; if the change trend of the forwarding resource usage of the first forwarding service is a decreasing trend, the programmable white-box universal forwarding device determines that the first forwarding service is a light-load service. Further, the programmable white-box universal forwarding device sends the service state of the first forwarding service to the SDN controller as forwarding resource information.
In one design, as shown in fig. 6, in order to determine the resource adjustment policy, the above S202 provided in the embodiment of the present invention specifically includes the following S2021:
s2021, SDN controller determines the service status of each forwarding service, and determines the resource adjustment strategy according to the service status of each forwarding service.
The resource adjustment strategy is used for indicating the programmable white-box universal forwarding device to increase the available forwarding resources of the heavy-load service according to the first preset increment and decrease the available forwarding resources of the light-load service according to the second preset increment. The first preset increment and the second preset increment may be the same or different.
As a possible implementation manner, after the SDN controller determines the service status of each forwarding service, for any forwarding service, if the forwarding service is a heavy-load service, the SDN controller instructs the programmable white-box universal forwarding device to add a preset forwarding resource to the forwarding service, and if the forwarding service is a light-load service, the SDN controller instructs the programmable white-box universal forwarding device to reduce the preset forwarding resource for the forwarding service.
As another possible implementation manner, after the SDN controller determines the service status of each forwarding service, the SDN controller instructs the programmable white-box universal forwarding device to release the available forwarding resources of the light-load service, and allocates the released available forwarding resources of the light-load service to the heavy-load service for use.
Correspondingly, after the resource adjustment strategy is received, the available forwarding resources of the heavy-load service are increased according to the resource adjustment strategy, and the available forwarding resources of the light-load service are reduced.
For easy understanding, as shown in fig. 7, information interaction between the programmable white-box universal forwarding device and the SDN controller in the communication method provided by the embodiment of the present invention is shown. Firstly, the SDN controller issues service forwarding logic to a first CPU of the programmable white-box universal forwarding device, and the first CPU instructs the programmable forwarding chip to forward the service according to the service forwarding logic (n forwarding services are included in the service forwarding logic). And the programmable forwarding chip forwards the service according to the forwarding logic and acquires the resource service condition of each forwarding service in real time. Further, the programmable forwarding chip reports the resource usage of n forwarding services to the second CPU. The second CPU determines the forwarding resource information of each forwarding service according to the resource use condition of each forwarding service, and sends the forwarding resource information of each forwarding service to the SDN controller. And the SDN controller determines a resource adjustment strategy according to the forwarding resource information of the forwarding services and sends the resource adjustment strategy to the programmable white-box universal forwarding equipment. Correspondingly, the programmable white-box universal forwarding device receives a resource adjustment strategy sent by the SDN controller, and adjusts forwarding resources of a plurality of forwarding services according to the resource adjustment strategy.
The foregoing embodiments mainly describe the solutions provided by the embodiments of the present invention from the perspective of the apparatus (device). It will be appreciated that, in order to implement the above-mentioned method, the apparatus or device includes hardware structures and/or software modules corresponding to each of the method flows, and these hardware structures and/or software modules corresponding to each of the method flows may constitute a material information determining apparatus. Those of skill in the art will readily appreciate that the various illustrative algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiment of the invention can divide the functional modules of the device or the equipment according to the method example, for example, the device or the equipment can divide each functional module corresponding to each function, or two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present invention, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
Fig. 8 shows a possible schematic diagram of the configuration of the programmable white-box generic forwarding device in case of dividing the respective functional modules with corresponding respective functions. As shown in fig. 8, the programmable white-box universal forwarding device 40 provided in the embodiment of the present invention includes a sending unit 401, a receiving unit 402, and a processing unit 403.
A sending unit 401, configured to send forwarding resource information of a plurality of forwarding services to an SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; a receiving unit 402, configured to receive a resource adjustment policy sent by the SDN controller by using a programmable white-box generic forwarding device, and a processing unit 403, configured to adjust forwarding resources of a plurality of forwarding services according to the resource adjustment policy; the resource adjustment policy is determined by the SDN controller according to forwarding resource information of a plurality of forwarding services.
Optionally, the forwarding resource information includes a service status, where the service status includes a heavy load service or a light load service, and the processing unit 403 is further configured to: determining the change condition of forwarding resource usage of a first forwarding service in a preset time; the first forwarding service is any forwarding service in a plurality of forwarding services; and determining the service state of the first forwarding service according to the change condition.
Optionally, the change condition includes a forwarding resource usage change amount, and the processing unit 403 is specifically configured to: under the condition that the use variation of forwarding resources is larger than a preset threshold value, determining a first forwarding service to be a reloading service; and under the condition that the forwarding resource use variation is smaller than or equal to a preset threshold value, determining that the first forwarding service is a light-load service.
Optionally, the processing unit 403 is specifically configured to: and increasing the available forwarding resources of the heavy-load service and reducing the available forwarding resources of the light-load service.
Fig. 9 shows a schematic diagram of a possible architecture of a software defined network SDN controller, in case of dividing the respective functional modules with corresponding respective functions. As shown in fig. 9, the software defined network SDN controller 50 provided in the embodiment of the present invention includes a receiving unit 501, a determining unit 502, and a sending unit 503.
A receiving unit 501, configured to receive forwarding resource information of a plurality of forwarding services sent by a programmable white-box universal forwarding device by using an SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources; a determining unit 502, configured to determine a resource adjustment policy according to forwarding resource information of a plurality of forwarding services by using an SDN controller; a sending unit 503, configured to send the resource adjustment policy to the programmable white-box generic forwarding device.
Optionally, the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the determining unit 502 is specifically configured to: determining the service state of each forwarding service, and determining a resource adjustment strategy according to the service state of each forwarding service; the resource adjustment strategy is used for indicating the programmable white-box universal forwarding device to increase the available forwarding resources of the heavy-load service and reduce the available forwarding resources of the light-load service.
In the case of implementing the functions of the integrated modules described above in the form of hardware, an embodiment of the present invention provides a possible structural schematic diagram of the communication device involved in the above embodiment. As shown in fig. 10, a communication device 60 is provided for better adapting to changes in forwarding traffic, and improving user experience, for example, for performing the communication method shown in fig. 3. The communication device 60 comprises a processor 601, a memory 602 and a bus 603. The processor 601 and the memory 602 may be connected by a bus 603.
The processor 601 is a control center of the communication device, and may be one processor or a collective term of a plurality of processing elements. For example, the processor 601 may be a general-purpose central processing unit (central processing unit, CPU), or may be another general-purpose processor. Wherein the general purpose processor may be a microprocessor or any conventional processor or the like.
As one example, processor 601 may include one or more CPUs, such as CPU 0 and CPU 1 shown in fig. 6.
The memory 602 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
As a possible implementation, the memory 602 may exist separately from the processor 601, and the memory 602 may be connected to the processor 601 through the bus 603 for storing instructions or program codes. The processor 601, when calling and executing instructions or program code stored in the memory 602, is capable of implementing the communication method provided by the embodiment of the present invention.
In another possible implementation, the memory 602 may also be integrated with the processor 601.
It should be noted that the structure shown in fig. 10 does not constitute a limitation of the communication device 60. The communication device 60 may include more or less components than shown in fig. 10, or may combine certain components, or may be arranged in a different arrangement of components.
As an example, in connection with fig. 8, the functions implemented by the transmitting unit 401, the receiving unit 402, and the processing unit 403 in the programmable white-box general forwarding device 40 are the same as those of the processor 601 in fig. 10.
As another example, in connection with fig. 9, the functions implemented by the receiving unit 501, the determining unit 502, and the transmitting unit 503 in the software defined network SDN controller 50 are the same as those of the processor 601 in fig. 10.
Optionally, as shown in fig. 10, the communication device 60 provided by the embodiment of the present invention may further include a communication interface 604.
In one design, the communication interface may also be integrated into the processor in the communication device provided by the embodiments of the present invention.
From the above description of embodiments, it will be apparent to those skilled in the art that the foregoing functional unit divisions are merely illustrative for convenience and brevity of description. In practical applications, the above-mentioned function allocation may be performed by different functional units, i.e. the internal structure of the device is divided into different functional units, as needed, to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, when the computer executes the instructions, the computer executes each step in the method flow shown in the method embodiment.
Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the communication method of the method embodiments described above.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: electrical connections having one or more wires, portable computer diskette, hard disk. Random access Memory (Random Access Memory, RAM), read-Only Memory (ROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disk, optical fiber, portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium suitable for use by a person or persons of skill in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In embodiments of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The present invention is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present invention should be covered by the scope of the present invention.
Claims (10)
1. A communication method, applied to a service forwarding system, where the service forwarding system includes a programmable white-box generic forwarding device and a software defined network SDN controller, the method comprising:
the programmable white-box universal forwarding device sends forwarding resource information of a plurality of forwarding services to the SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources;
the programmable white-box universal forwarding device receives a resource adjustment strategy sent by the SDN controller and adjusts forwarding resources of the forwarding services according to the resource adjustment strategy; the resource adjustment policy is determined by the SDN controller according to forwarding resource information of the forwarding services;
the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the method further includes:
the programmable white-box universal forwarding device determines the forwarding resource usage variable quantity of the first forwarding service in preset time according to the forwarding resource usage variable quantity of the first forwarding service in the current period, the forwarding resource usage variable quantity of the first forwarding service in the previous period and a preset formula, and takes the forwarding resource usage variable quantity as the forwarding resource usage variable condition of the first forwarding service in the preset time; wherein the current period and the last period are both time periods within a preset time; the first forwarding service is any forwarding service in the plurality of forwarding services;
The preset formula satisfies: forwarding resource usage change = last cycle forwarding resource usage change x + single forwarding resource size exp (current cycle forwarding resource usage change) xlog (0.8); wherein x is a weight coefficient, 0< x <1, the use variable quantity of the forwarding resource in the previous period represents the number of the forwarding table in the previous period, the use variable quantity of the forwarding resource in the current period represents the number of the forwarding table in the current period, and the occupation quantity of the forwarding resource in the single period is the size of the single forwarding table;
and the programmable white-box universal forwarding equipment determines the service state of the first forwarding service according to the change condition.
2. The communication method according to claim 1, wherein the change condition includes a forwarding resource usage change amount, and the programmable white-box universal forwarding device determines a service state of the first forwarding service according to the change condition, including:
under the condition that the use variation of the forwarding resources is larger than a preset threshold value, the programmable white-box universal forwarding equipment determines that the first forwarding service is a reloading service;
and under the condition that the use variation of the forwarding resources is smaller than or equal to a preset threshold value, the programmable white-box universal forwarding device determines that the first forwarding service is a light-load service.
3. The communication method according to claim 2, wherein said adjusting forwarding resources of said plurality of forwarding services according to said resource adjustment policy comprises:
the programmable white-box universal forwarding device increases the available forwarding resources of the heavy-load service according to a first preset increment, and decreases the available forwarding resources of the light-load service according to a second preset increment.
4. A communication method, applied to a service forwarding system, where the service forwarding system includes a programmable white-box generic forwarding device and a software defined network SDN controller, the method comprising:
the SDN controller receives forwarding resource information of a plurality of forwarding services sent by the programmable white-box universal forwarding equipment; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources;
the SDN controller determines a resource adjustment strategy according to forwarding resource information of the forwarding services and sends the resource adjustment strategy to the programmable white-box universal forwarding equipment;
the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the SDN controller determines a resource adjustment policy according to forwarding resource information of the forwarding services, where the determining includes:
The SDN controller determines the service state of each forwarding service and determines the resource adjustment strategy according to the service state of each forwarding service; the resource adjustment strategy is used for indicating the programmable white-box universal forwarding device to increase the available forwarding resources of the heavy-load service according to a first preset increment and to decrease the available forwarding resources of the light-load service according to a second preset increment;
the service state of the forwarding service is obtained by the change condition of the forwarding resource usage of the first forwarding service in the preset time, and the change condition of the forwarding resource usage of the first forwarding service in the preset time is obtained by the forwarding resource usage change amount of the first forwarding service in the current period, the forwarding resource usage change amount of the first forwarding service in the previous period and a preset formula; wherein, the preset formula satisfies: forwarding resource usage change = last cycle forwarding resource usage change x + single forwarding resource size exp (current cycle forwarding resource usage change) xlog (0.8); wherein x is a weight coefficient, 0< x <1, the previous period forwarding resource usage variable quantity represents the number of the previous period forwarding table, the current period forwarding resource usage variable quantity represents the number of the current period forwarding table, and the single forwarding resource occupation quantity is the size of the single forwarding table.
5. The universal forwarding device for the programmable white box is characterized by being applied to a service forwarding system, wherein the service forwarding system further comprises a software defined network SDN controller, and the universal forwarding device for the programmable white box comprises a sending unit, a receiving unit and a processing unit;
the sending unit is used for sending forwarding resource information of a plurality of forwarding services to the SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources;
the receiving unit is used for the programmable white-box universal forwarding device to receive the resource adjustment strategy sent by the SDN controller,
the processing unit is used for adjusting forwarding resources of the forwarding services according to the resource adjustment strategy; the resource adjustment policy is determined by the SDN controller according to forwarding resource information of the forwarding services;
the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the processing unit is further configured to:
determining the forwarding resource usage variable quantity of the first forwarding service in a preset time according to the forwarding resource usage variable quantity of the first forwarding service in the current period, the forwarding resource usage variable quantity of the first forwarding service in the previous period and a preset formula, and taking the forwarding resource usage variable quantity as the forwarding resource usage variable condition of the first forwarding service in the preset time; wherein the current period and the last period are both time periods within a preset time; the first forwarding service is any forwarding service in the plurality of forwarding services;
The preset formula satisfies: forwarding resource usage change = last cycle forwarding resource usage change x + single forwarding resource size exp (current cycle forwarding resource usage change) xlog (0.8); wherein x is a weight coefficient, 0< x <1, the use variable quantity of the forwarding resource in the previous period represents the number of the forwarding table in the previous period, the use variable quantity of the forwarding resource in the current period represents the number of the forwarding table in the current period, and the occupation quantity of the forwarding resource in the single period is the size of the single forwarding table;
and determining the service state of the first forwarding service according to the change condition.
6. The programmable white-box generic forwarding device of claim 5, wherein the change condition comprises a forwarding resource usage change amount, and wherein the processing unit is specifically configured to:
determining the first forwarding service to be a reloading service under the condition that the forwarding resource usage variation is larger than a preset threshold value;
and under the condition that the use variation of the forwarding resources is smaller than or equal to a preset threshold value, determining that the first forwarding service is a light-load service.
7. The programmable white-box generic forwarding device of claim 6, wherein the processing unit is specifically configured to:
And increasing the available forwarding resources of the heavy-load service according to the first preset increment, and reducing the available forwarding resources of the light-load service according to the second preset increment.
8. The Software Defined Network (SDN) controller is characterized by being applied to a service forwarding system, wherein the service forwarding system further comprises programmable white-box universal forwarding equipment, and the SDN controller comprises a receiving unit, a determining unit and a sending unit;
the receiving unit is configured to receive forwarding resource information of a plurality of forwarding services sent by the programmable white-box universal forwarding device by using the SDN controller; the forwarding resource information is used for reflecting the use condition of forwarding resources and the requirements of the forwarding resources;
the determining unit is configured to determine a resource adjustment policy by using the SDN controller according to forwarding resource information of the forwarding services;
the sending unit is used for sending the resource adjustment strategy to the programmable white-box universal forwarding device;
the forwarding resource information includes a service state, where the service state includes a heavy load service or a light load service, and the determining unit is specifically configured to:
determining the service state of each forwarding service, and determining the resource adjustment strategy according to the service state of each forwarding service; the resource adjustment strategy is used for indicating the programmable white-box universal forwarding device to increase the available forwarding resources of the heavy-load service according to a first preset increment and to decrease the available forwarding resources of the light-load service according to a second preset increment;
The service state of the forwarding service is obtained by the change condition of the forwarding resource usage of the first forwarding service in the preset time, and the change condition of the forwarding resource usage of the first forwarding service in the preset time is obtained by the forwarding resource usage change amount of the first forwarding service in the current period, the forwarding resource usage change amount of the first forwarding service in the previous period and a preset formula; wherein, the preset formula satisfies: forwarding resource usage change = last cycle forwarding resource usage change x + single forwarding resource size exp (current cycle forwarding resource usage change) xlog (0.8); wherein x is a weight coefficient, 0< x <1, the previous period forwarding resource usage variable quantity represents the number of the previous period forwarding table, the current period forwarding resource usage variable quantity represents the number of the current period forwarding table, and the single forwarding resource occupation quantity is the size of the single forwarding table.
9. A computer readable storage medium storing one or more programs, wherein the one or more programs comprise instructions, which when executed by a computer, cause the computer to perform the communication method of any of claims 1-3 or the communication method of claim 4.
10. A communication device, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the communication device, cause the communication device to perform the communication method of any of claims 1-3 or the communication method of claim 4.
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