CN112702282B - Flexible configuration method and system of time sensitive network - Google Patents
Flexible configuration method and system of time sensitive network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/805—QOS or priority aware
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/821—Prioritising resource allocation or reservation requests
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Abstract
The application relates to a flexible configuration method and a system of a time sensitive network, belonging to the field of resource configuration of a time sensitive network system, wherein the method comprises the following steps: the user configuration module receives the service quality requirement sent by each endpoint device and represents the endpoint device to transmit the service data transmission requirement to the network configuration module; the network configuration module calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment; if the data transmission time table and the data transmission path can meet the service data transmission requirement, the network configuration module sets a network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the stream transmission information of the related endpoint equipment to the user configuration module; and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission. The accuracy, the real-time performance and the reliability of time-sensitive data transmission can be improved.
Description
Technical Field
The application relates to the field of resource configuration of a time-sensitive network system, in particular to a flexible configuration method and system of a time-sensitive network.
Background
With the development of the industrial flexible intelligent manufacturing technology and the new generation of industrial internet technology, the time-sensitive network technology is regarded as a new generation of converged network data transmission technology, and can meet the requirements of industrial data transmission accuracy, instantaneity and reliability.
At present, the time-sensitive data transmission protocol applied in the industrial internet mainly adopts the proprietary protocol of each manufacturer. Due to the privatization of protocols in the devices of different manufacturers, data interaction between the devices is difficult, and the time-sensitive network system can effectively unify the transmission of two-layer data, so that the decoupling of the devices of different manufacturers is realized. Generally, the resources of the time-sensitive network system can be manually configured to define the data transmission resources, but this approach not only reduces the reconfigurability of the device, but also reduces the configuration efficiency, thus being not conducive to the flexible production development of the industry.
With respect to the conventional time-sensitive data transmission technology, the bandwidth requirement of real-time data is mainly protected by a bandwidth reservation mechanism, which refers to a distributed sensitive network requirement and bandwidth resource allocation mechanism. However, if registration or deregistration of a new device occurs in the network, data requirement of the device changes, and flexible reconfiguration of the network occurs, delay change and overload of bandwidth requirement of the sensitive network are caused, so that transmission efficiency of the sensitive network is reduced. In this regard, no effective solution has been proposed in the related art.
Disclosure of Invention
The embodiment of the application provides a flexible configuration method and a flexible configuration system of a time sensitive network, so as to at least solve the problem of how to improve the resource configuration efficiency and the usability of a time sensitive network system in the related art.
In a first aspect, an embodiment of the present application provides a flexible configuration method for a time-sensitive network, which is applied to a system including a user configuration module and a network configuration module, and the method includes: the user configuration module receives the service quality requirement sent by each endpoint device and represents the endpoint device to convey the service data transmission requirement to the network configuration module; the network configuration module calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment; if the data transmission schedule and the data transmission path can meet the service data transmission requirement, the network configuration module sets a network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the related stream transmission information of the endpoint equipment to the user configuration module; and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission.
In some embodiments, before the user configuration module receives the quality of service requirement sent by each endpoint device, the method includes: the user configuration module discovers the endpoint device, retrieves capabilities of the endpoint device, and collects user requirements of the endpoint device, wherein the user requirements include quality of service requirements.
In some embodiments, before the user configuration module receives the quality of service requirement sent by each endpoint device, the method includes: the network configuration module discovers the physical topology of the switching device via the remote network management protocol and retrieves the functional and flow quality service requirements of the switching device.
In some of these embodiments, the remote network management protocol carries at least one of a queuing and forwarding mechanism for time sensitive flows, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism.
In some embodiments, after the network configuration module configures a bridge management object via a remote network management protocol to configure a bridge in a time sensitive network, the method comprises: the network configuration module configures time sensitive feature requirements in the switching device via the remote network management protocol.
In some of these embodiments, the remote network management protocol enables the network configuration module and the switching device to communicate properly through a mapping from a YANG to a specific code, wherein the specific code employs XML or JSON.
In a second aspect, the present application provides a flexible configuration system for a time-sensitive network, including a user configuration module and a network configuration module,
the user configuration module receives the service quality requirement sent by each endpoint device and represents the endpoint device to convey the service data transmission requirement to the network configuration module;
the network configuration module calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment;
if the data transmission schedule and the data transmission path can meet the service data transmission requirement, the network configuration module sets a network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the related stream transmission information of the endpoint equipment to the user configuration module;
and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission.
In some embodiments, the user configuration module is further configured to discover the endpoint device, retrieve functionality of the endpoint device, and collect user requirements of the endpoint device, wherein the user requirements include quality of service requirements.
In some embodiments, the network configuration module is further configured to discover a physical topology of the switching device via the remote network management protocol, and retrieve functionality and flow quality service requirements of the switching device.
In some of these embodiments, the remote network management protocol carries at least one of a queuing and forwarding mechanism for time sensitive flows, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism.
According to the above, the flexible configuration method of the time-sensitive network according to the embodiment of the present application includes: the user configuration module receives the service quality requirement sent by each endpoint device and represents the endpoint device to transmit the service data transmission requirement to the network configuration module; the network configuration module calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment; if the data transmission time table and the data transmission path can meet the service data transmission requirement, the network configuration module sets a network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the stream transmission information of the related endpoint equipment to the user configuration module; and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission. Through an automatic network resource configuration mode, the development of a large-scale networked industrial control system can be realized, even if the service data transmission requirement of the endpoint equipment in the time-sensitive network system is changed, the resource configuration can be quickly realized, and the accuracy, the real-time property and the reliability of the time-sensitive data transmission are greatly improved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a method of flexible configuration of a time sensitive network according to an embodiment of the present application;
FIG. 2 is a diagram illustrating the relationship of a user configuration module, a network configuration module, an endpoint device, and a switching device according to an embodiment of the present application;
FIG. 3 is a state transition diagram of an endpoint device during a multi-level configuration process according to an embodiment of the application;
fig. 4 is a block diagram of a flexible configuration system of a time sensitive network according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
For time-sensitive network systems, after clock synchronization and scheduling strategies, the problem of network configuration needs to be considered. For example, SRP (Sequoia Routing protocol 1), which is a distributed network configuration mechanism, is used in the audio Video bridging over ethernet technology avb (audio Video bridging), can operate close to a network, and can accommodate a large-scale network. However, in more stringent industrial applications, more efficient and easy-to-use arrangements are required. Therefore, for flexible resource allocation management of time-sensitive data transmission of the industrial internet, the embodiment of the present application provides a novel prototype ("short for principles and models") supporting centralized network resource allocation, which will be described in detail below.
As an implementation manner, an embodiment of the present application provides a flexible configuration method of a time-sensitive network, which is used for globally managing and controlling a network, and is applied to a system including a user configuration module and a network configuration module, fig. 1 is a flowchart of the flexible configuration method of the time-sensitive network according to the embodiment of the present application, and as shown in fig. 1, the method includes:
s100: the user configuration module receives the service quality requirement sent by each endpoint device and represents the endpoint device to transmit the service data transmission requirement to the network configuration module;
s200: the network configuration module calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment;
s300: if the data transmission time schedule and the data transmission path can meet the service data transmission requirements, the network configuration module sets a proper network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the stream transmission information of the related endpoint equipment to the user configuration module;
s400: and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission.
As an example, before the user configuration module receives the quality of service requirements sent by each endpoint device, the endpoint devices may be discovered by the user configuration module, the capabilities of the endpoint devices retrieved, and the user requirements of the endpoint devices collected, the user requirements containing the quality of service requirements.
As an example, before the user configuration module receives the quality of service requirements sent by each endpoint device, the network configuration module may discover the physical topology of the switching device via a remote network management protocol, retrieve the functionality of the switching device and the flow quality service requirements.
As an example, the above-mentioned remote network management protocol carries at least one of a queuing and forwarding mechanism for time-sensitive flows, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism.
As an example, after the network configuration module sets the appropriate bridge management object via a remote network management protocol, and configures the bridge in the time sensitive network, the network configuration module may configure the time sensitive feature requirements in the switching device via the remote network management protocol.
As an example, the remote network management protocol enables the network configuration module and the switching device to communicate properly by mapping from YANG to a specific code, preferably XML or JSON.
In order to more clearly illustrate the embodiments of the present application, the following provides a detailed explanation of the examples.
In time-sensitive network systems, a large amount of user configurations (i.e., configurations of user requirements), such as quality of service requirements, traffic data transmission requirements, etc., are required for each endpoint device in the network, which are mainly the sender and receiver of data. For example, in many automotive and industrial control applications, the time of physical input and output (I/O) is determined by the physical environment being controlled, while the time-sensitive requirements of time-sensitive networks come from the I/O data transfer time, which can be computationally complex and involve detailed knowledge of the application software and hardware within each endpoint device.
In order to meet the transmission requirement of time-sensitive network data, the embodiment of the application identifies end stations (including end point equipment and switching equipment), retrieves the functions of the end stations and collects the user requirements of the end stations through a flexible configuration method, and configures the time-sensitive network characteristics in the end stations. The method is mainly realized through the cooperative calculation and exchange between the user management module and the network management module.
As an implementation manner, the embodiment of the present application provides a general L2 layer (i.e. data link layer) service method by supplementing a user/network interface. Fig. 2 is a schematic diagram of a relationship among a user configuration module, a network configuration module, an endpoint device, and a switching device according to an embodiment of the present application, where as shown in fig. 2, the endpoint device is communicatively connected to the switching device, the user configuration module is communicatively connected to the endpoint device, the network configuration module is communicatively connected to the switching device, and the user configuration module is used as a node to communicate with the network configuration module through a user/network interface. In the embodiment of the present application, the network configuration module interacts with the user configuration module to provide a reservation of bandwidth demand resources, data scheduling, and a configuration management protocol, which will be described in detail below.
The user configuration module may discover the endpoint devices, retrieve the capabilities of the endpoint devices, gather the user requirements (including quality of service requirements, traffic data transmission requirements) of the endpoint devices, and configure and optimize the capabilities of the endpoint devices via a terminal-specific configuration protocol that is user-oriented. For example, an endpoint device exposes an interface to a user configuration module of its application so that the user configuration module can configure the endpoint device for transmission or reception of data streams. The communication interface of the user configuration module and the endpoint device may use a push model, where the user configuration module initiates the communication and the endpoint device responds with information, through which the user configuration module may query the flow requirements of the endpoint device in addition to configuring the endpoint device flow parameters.
Optionally, the embodiment of the present application may be further combined with a time-sensitive data shaper to achieve zero congestion loss of end-to-end transmission
The network configuration module is used as a management client, and each switching device is used as a management server. The network configuration module uses remote management to discover the physical topology of the switching devices, retrieve the functionality of the switching devices, and configure time sensitive feature requirements in each switching device. It should be noted that in the remote network management protocol, the endpoint device does not need to participate in the configuration. Preferably, the information carried by the remote network management protocol mainly includes a queuing and forwarding mechanism of the time-sensitive flow, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism. Thus, switching devices may be configured with time-sensitive feature requirements such as credit-based shaping algorithms, frame preemption configurations, queuing mechanisms, frame replication and frame reassembly mechanisms, flow filtering and early warning mechanisms, circular queue queuing and forwarding mechanisms.
Therefore, through an automatic network resource allocation mode, the development of a large-scale networked industrial control system can be realized, even if the user requirements of the endpoint equipment in the time-sensitive network system are changed, the resource allocation can be quickly realized, and the accuracy, the real-time property and the reliability of time-sensitive data transmission are greatly improved.
As an example, the flexible configuration method of the time-sensitive network according to the embodiment of the present application is compatible with a YANG/NETCONF data modeling language. Optionally, in the network configuration module, a YANG is used to model the remote network management protocol, and includes configuration data and status data, where YANG is a data modeling language. Optionally, the remote network management protocol may also use a specific encoding, such as XML or JSON. Thus, for a particular time sensitive network characteristic, the YANG model can specify the organization and rules for the characteristic management data, and the mapping from YANG to a particular code enables clients (e.g., network configuration modules) and servers (e.g., switching devices) to properly understand the data for proper communication. It should be noted that the configuration management of the user/network interface in the embodiment of the present application is not the network management, because the information of the latter is exchanged between the user and the network, and the information of the former is exchanged between the network manager and the network bridge.
Based on the above, the embodiment of the application can implement efficient and easy-to-use network configuration to obtain the resources of the terminal node and the bridge node, the bandwidth of each node, the data load, the target address, the clock and other information, and collect the information to the central node (i.e., the user configuration module and the network configuration module) for unified scheduling, so as to achieve optimal transmission efficiency.
In addition, since the configuration model depends on the configuration state, the user control module is also used to control the state of the endpoint device throughout the configuration process.
As an example, embodiments of the present application include a multi-stage configuration process, comprising: user requirements are collected from the endpoint devices, data transmission paths and data transmission schedules in the network are calculated, and streams are configured and stream transmission is started on the endpoint devices and the switching device. Fig. 3 is a state transition diagram of an endpoint device in a multi-stage configuration process according to an embodiment of the present application, and as shown in fig. 3, a configuration state machine of the endpoint device includes an initialization state, a configuration state, a preparation state, and a running state, please refer to the following detailed explanation.
An initialization state: the initial state of the module's communication relationship with the endpoint device is configured for the user. In this state, the stream object is under the control of the application of the endpoint device, and the user configuration module is not yet allowed to access the endpoint device. The endpoint device performs internal application initialization, collects flow data requirements for time sensitive flows, and updates flow objects.
Configuration state: in this state, the user configuration module is granted access to the stream object of the end point device and sends the access result to the network configuration module, and the network configuration module performs data scheduling and calculates a data transmission path and a data transmission schedule. And if the user configuration module receives the data transmission path and the data transmission time table from the network configuration module, writing the information parameters into the stream object. This state assumes that the endpoint device application has completed writing stream data information to the stream object. Since the system is being configured in this state, the transmission of the time sensitive stream has not yet been initiated. While the clock synchronization procedure may have been initiated but is not required to have been completed.
A preparation state: in this state, the endpoint device has successfully configured the network interface to send or receive time-sensitive streams according to the transmission path and transmission schedule written to the stream object during the configuration state. It is noted that the endpoint device needs to enter this state after the clock for time sensitive streaming is synchronized to the master clock, and in this state the transmission of the time sensitive stream has not yet started.
The operation state is as follows: in this state, the transmission of the time-sensitive stream starts. If the time sensitive stream of one endpoint device is configured to the start state, the stream will be delayed from the start until a future time event is received that is sent by the user configuration module. The user configuration module coordinates streaming between the endpoint devices, e.g., sends the same future time event to all endpoint devices after they successfully transition to an operational state.
The triggering conditions are as follows: a represents a start configuration; b represents a configuration to prohibit stream transmission and reception, disabling; c represents a start configuration; d represents a stop configuration; e represents an application configuration; f denotes not enable configuration; g represents enabling stream transmission and reception; h represents disabling configuration, stopping configuration; i denotes no-enable stream transmission and reception.
Therefore, in the embodiment of the application, the user configuration module and the network configuration module can acquire the requirement change information of the endpoint device in time, so as to trigger updating of the network resource configuration when the link state and the device information are changed.
It should be noted that, in the embodiments of the present application, the "stream" refers to a "data stream", such as a time-sensitive stream, i.e., a time-sensitive data stream.
As an example, the flexible configuration method of the time-sensitive network according to the embodiment of the present application includes the following processes:
1. the data sender and receiver of the endpoint device communicate their quality of service requirements to the user configuration module using a terminal-specific configuration protocol.
2. The user configuration module communicates the traffic data transmission requirements to the network configuration module on behalf of all of its associated application's endpoint devices via a user/network configuration interface protocol.
3. The network configuration model calculates a data transmission time schedule, a data transmission path and the like under the condition of meeting the flow quality service requirement of the switching equipment in the network.
4. If the data transmission schedule and the data transmission path calculated by the network configuration module can meet the service data transmission requirement of the endpoint device, the following operations are executed:
a. the network configuration module sets a proper bridge management object through a remote network management protocol, and configures a bridge in a time sensitive network;
b. the network configuration module feeds back the streaming information of the relevant endpoint device to the user configuration module via the user/network configuration interface protocol.
And if the data transmission schedule and the data transmission path cannot meet the service data transmission requirement of the end point equipment, returning an error to the user configuration module.
5. And if the user configuration module judges that the streaming transmission information meets the service quality requirement of the endpoint equipment, configuring the endpoint equipment and starting data transmission.
Therefore, through an automatic network resource configuration mode, the development of a large-scale networked industrial control system can be realized, even if the service data transmission requirement of the endpoint equipment in the time-sensitive network system is changed, the resource configuration can be quickly realized, and the accuracy, the real-time property and the reliability of the time-sensitive data transmission are greatly improved.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
The present embodiment also provides a flexible configuration system of a time-sensitive network, which is used to implement the foregoing embodiments and preferred embodiments, and the description of the system that has been already made is omitted. The term "module" as used below may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
Fig. 4 is a block diagram of a flexible configuration system of a time-sensitive network according to an embodiment of the present application, where as shown in fig. 4, the system includes a user configuration module 1 and a network configuration module 2, and the user configuration module 1 receives a quality of service requirement sent by each endpoint device and communicates a service data transmission requirement to the network configuration module 2 on behalf of the endpoint device; the network configuration module 2 calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment; if the data transmission schedule and the data transmission path can meet the service data transmission requirements, the network configuration module 2 sets a proper network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the stream transmission information of the relevant endpoint equipment to the user configuration module 1; if the user configuration module 1 determines that the streaming information meets the qos requirement, the end point device is configured to start data transmission.
Optionally, the user configuration module 1 is further configured to discover the endpoint device, retrieve the functionality of the endpoint device, and collect user requirements of the endpoint device, where the user requirements include quality of service requirements.
Optionally, the network configuration module 2 is further configured to discover a physical topology of the switching device through a remote network management protocol, and retrieve the function and the stream quality service requirement of the switching device.
Optionally, the remote network management protocol carries at least one of a queuing and forwarding mechanism of the time-sensitive flow, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A flexible configuration method of a time-sensitive network is applied to a system comprising a user configuration module and a network configuration module, and comprises the following steps:
the user configuration module discovers an endpoint device, retrieves a function of the endpoint device, and collects a user requirement of the endpoint device, wherein the user requirement comprises a quality of service requirement;
the network configuration module discovers the physical topology of the switching equipment through a remote network management protocol, retrieves the function and flow quality service requirements of the switching equipment, and configures time-sensitive characteristic requirements in each switching equipment;
the user configuration module receives the service quality requirement sent by each endpoint device and represents the endpoint device to convey the service data transmission requirement to the network configuration module;
the network configuration module calculates a data transmission time schedule and a data transmission path under the condition of meeting the flow quality service requirement of the switching equipment;
if the data transmission schedule and the data transmission path can meet the service data transmission requirement, the network configuration module sets a network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the related stream transmission information of the endpoint equipment to the user configuration module;
and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission.
2. The method of claim 1, wherein the remote network management protocol carries at least one of a queuing and forwarding mechanism for time sensitive flows, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism.
3. The method of claim 2, wherein after the network configuration module configures the bridge management object via a remote network management protocol to configure the bridge in the time sensitive network, the method comprises:
the network configuration module configures time sensitive feature requirements in the switching device via the remote network management protocol.
4. The method of claim 1, wherein the remote network management protocol enables the network configuration module and the switching device to communicate properly through a mapping from YANG to a specific code, wherein the specific code is in XML or JSON.
5. A flexible configuration system of a time-sensitive network is characterized by comprising a user configuration module and a network configuration module,
the user configuration module discovers an endpoint device, retrieves a function of the endpoint device, and collects a user requirement of the endpoint device, wherein the user requirement comprises a quality of service requirement; receiving a service quality requirement sent by each endpoint device, and conveying a service data transmission requirement to the network configuration module on behalf of the endpoint device;
the network configuration module discovers the physical topology of the switching equipment through a remote network management protocol, retrieves the function and flow quality service requirements of the switching equipment, and configures time-sensitive characteristic requirements in each switching equipment; under the condition of meeting the flow quality service requirement of the switching equipment, calculating to obtain a data transmission time schedule and a data transmission path;
if the data transmission schedule and the data transmission path can meet the service data transmission requirement, the network configuration module sets a network bridge management object through a remote network management protocol, configures a network bridge in a time sensitive network, and feeds back the related stream transmission information of the endpoint equipment to the user configuration module;
and if the user configuration module judges that the streaming transmission information meets the service quality requirement, configuring the endpoint equipment and starting data transmission.
6. The system of claim 5, wherein the remote network management protocol carries at least one of a queuing and forwarding mechanism for time sensitive flows, a traffic bandwidth management mechanism, and a flow reservation remote management mechanism.
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