CN108075939B - Network quality detection system and method - Google Patents
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Abstract
The invention discloses a network quality detection system and a network quality detection method. Wherein, the method comprises the following steps: acquiring information related to network quality detection from a controller included in a network based on a path computation element communication protocol (PCEP); and detecting network quality based on the network quality detection related information.
Description
Technical Field
The present invention relates to the field of Software Defined Networking (SDN)/Network Function Virtualization (NFV), and more particularly to a path computation element communication protocol (PCEP) based network quality detection system and method.
Background
NFV (Network Function Virtualization) involves exploring the virtualized use of Network entities in a software-defined manner. In particular, the functions of the network equipment can be independent of special hardware through software and hardware decoupling and function abstraction, resources can be fully and flexibly shared, and rapid development and deployment of new services are realized.
Software Defined Networking (SDN) involves migrating network configurations from a single device to a software platform, the device itself becoming simpler. The network configuration is managed by a central controller, which is software containing algorithms, analyses and rules from a set of rules and issues the configuration to the network devices using OpenFlow or other protocols.
The core idea of SDN is to abstract network functions and traffic handling and to control these abstracted objects through built-in or external controllers. The SDN separates the control and forwarding of network traffic into a control plane and a forwarding plane, and provides a standard interface between the control plane and the forwarding plane. Moreover, control centralization is achieved in the SDN.
NFV may be implemented by SDN (e.g., a server network is built by a method of controlling forwarding separation), but NFV may also be implemented by using a common data center technology.
In an SDN network architecture, in order to achieve reasonable allocation and usage of network resources automatically by using a centralized scheduling system, a PCEP protocol is generally used to achieve a very good interaction structure between a controller and a router in a network.
The path computation element communication protocol (PCEP) is a communication protocol between a Path Computation Client (PCC) and a Path Computation Element (PCE), and mainly implements request and result issuing for optimizing path computation. The PCEP protocol specifies a series of Object classes (Object classes) that are used to convey some constraints in the path computation process, such as Bandwidth (Bandwidth), metric (metric), radial offset (RRO), etc.
Disclosure of Invention
One technical problem to be solved by the embodiments of the present invention is: how to realize the automatic detection of the quality index of the whole network under the centralized network architecture.
In view of this, the present invention provides a method and a system for network quality detection based on PCEP protocol.
According to an aspect of an embodiment of the present invention, there is provided a method for detecting network quality, the network including a controller, the method including: acquiring information related to network quality detection from the controller based on a PCEP protocol; and detecting network quality based on the network quality detection related information.
According to an aspect of embodiments of the present invention, there is provided a controller for network quality detection, the network comprising at least two nodes, the controller being configured to: sending information related to network quality detection to the node based on a PCEP protocol; wherein the network quality is detected based on the network quality detection related information.
According to an aspect of the embodiments of the present invention, there is provided a node for network quality detection, the network comprising a controller and at least two of the nodes, the node being configured to: acquiring information related to network quality detection from the controller based on a PCEP protocol; and performing path detection between nodes based on the information related to the network quality detection, wherein the network quality is generated based on the result of the path detection.
According to an aspect of the embodiments of the present invention, there is provided a network quality detection system, the system including a controller and at least two nodes, wherein the controller is configured to transmit network quality detection related information to the nodes based on a PCEP protocol; and the nodes detect paths among the nodes according to the information related to the network quality detection, wherein the network quality among the nodes is generated based on the result of the path detection.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 shows a flow chart of a network quality detection method according to an embodiment of the invention.
Fig. 2 shows a flowchart of an example of a PCEP protocol-based network quality detection method according to an embodiment of the present invention.
Fig. 3 shows a flowchart of an example of a PCEP protocol-based network quality detection method according to another embodiment of the present invention.
Fig. 4 shows a schematic diagram of an example of a PCEP protocol-based network quality detection procedure according to an embodiment of the invention.
Fig. 5 is a diagram illustrating an example of an overall encapsulation manner of a PCC list message.
Fig. 6 is a diagram illustrating an example of a TraceBack message encapsulation method.
Fig. 7 is a diagram showing an example of the entire encapsulation manner of the TraceResult message.
Fig. 8 shows a block diagram of an example of a PCEP protocol-based network quality detection system in accordance with an embodiment of the invention.
Fig. 9 illustrates an exemplary implementation of a controller or node according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
To address the problem of path computation and complex path constraints under multiple domains in multi-protocol label switching/generalized multi-protocol label switching (MPLS/GMPLS) networks, PCEs have been proposed by the internet engineering task force. A PCE is an element in the network that is specifically responsible for path computation and is capable of computing the best path that satisfies constraints based on known network topology, constraints, and path information. The PCE may be located anywhere in the network, such as integrated within a network device, or may operate as a standalone device. As an example, a PCE may operate as a controller in a network.
The PCEP protocol is a communication protocol suitable for a centralized network architecture in which centralized control of the entire network may be achieved by PCEs, thereby providing a data interface for legacy network devices. In a traditional centralized network architecture based on PCEP protocol, a plurality of domains are included, wherein each domain includes a plurality of PCCs and a PCE.
A PCC is a path computation client in a network that may request a PCE for path computation. By way of example, the PCC may operate as a network device, a router, and the like in the network.
And the PCC and the PCE are communicated through a PCEP protocol, so that a path computation request is submitted and a path computation result is obtained.
The Traceroute (Traceroute) path detect command is a path that can acquire information about an information propagation path, and reflects information of each dynamic or static routing node. In traditional network quality detection, a PCC respectively initiates a Traceroute path detection command to another PCC in a domain based on a distributed router protocol, but the communication is unidirectional, opposite-end PCC cannot automatically return a detection reverse path, and the detection result precision is poor. Moreover, current path detection can only detect one path at a time, and cannot detect multiple paths simultaneously. In summary, the detection of network quality by the current approach is inefficient and less accurate.
Based on the existing PCEP protocol architecture, no path detection request and response message are transmitted in the Object Class specified by the current protocol, and end-to-end path detection and request based on the PCEP protocol cannot be realized. The end-to-end quality and path detection data between network nodes are an important index of network capability, and play a very important role in the service deployment process.
In this regard, the present invention proposes a more efficient centralized network quality automatic detection mechanism based on PCEP protocol.
Fig. 1 shows a network quality detection method according to an embodiment of the invention, the network comprising a controller, the method comprising: acquiring network quality detection related information from the controller based on a path computation element communication protocol, PCEP (S101); and detecting a network quality based on the network quality detection-related information (S102).
According to an embodiment, the network quality detection related information may include information related to nodes to be network quality detected, which are included in the network, and the network quality between the nodes may be detected based on the node-related information.
Thus, by the centralized control of the controller, information related to network quality detection (for example, information of a node of the network communication quality to be detected) can be well determined, whereby appropriate path quality detection can be performed between nodes based on the obtained information.
According to an embodiment, the network quality detection related information may be autonomously transmitted from the controller to the nodes included in the network for network quality detection by the nodes; or the network quality detection related information may be requested by a node comprised in the network from the controller for network quality detection by the node.
According to an embodiment, the node-related information may be node list information referring to nodes to be subjected to network quality detection, and path detection may be performed for the indicated nodes to generate network quality according to a result of the path detection.
According to an embodiment, the node list information may include a node address of the node. As an example, a node contained in the node list may refer to a node to be path-detected, and such a node may be all nodes in the network.
Alternatively, the nodes in the node list may be appropriately selected nodes among all the nodes, so that path detection performed for these nodes can obtain good quality detection and can improve efficiency by reducing path detection operations. For example, the nodes selected appropriately may be several nodes having a large impact on the overall network quality, for example, the first nodes may be the first nodes in the nodes ranked from large to small on the impact on the network quality, and the number of the nodes may be preset or determined during quality detection. Of course, the selection of the node may also be made according to other criteria.
According to an embodiment, the node address of which nodes are included in the node list information may be decided by the controller.
Thus, the list of nodes to be quality-tested can be appropriately determined by centralized control of the controller, and thus quality testing can be performed with the nodes listed in the list to appropriately determine the network quality, which can be performed by performing path testing between the nodes.
It should be noted that the above-mentioned network quality detection related information is merely exemplary, and other types of information may be included in addition to or instead of the above-mentioned node information for network quality detection.
According to the embodiment, the network may include at least two nodes, one of which may be based on information about a corresponding node to be path-detected, obtained from the controller, in addition to the controller performing centralized control, whereby path detection may be appropriately performed between the nodes under the centralized control of the controller, so that appropriate network quality detection may be performed based on the PCEP protocol.
According to an embodiment, the nodes included in the network comprise at least one first node and at least one second node, wherein the at least one first node acquires first node information about the at least one second node from the controller based on the PCEP protocol, whereby the at least one first node performs a first path detection on the at least one second node based on the first node information, and the at least one second node acquires second node information about the at least one first node from the controller based on the PCEP protocol, whereby the at least one second node performs a second path detection on the at least one first node based on the second node information, wherein the network quality between the nodes is generated according to at least one of a result of the first path detection and a result of the second path detection.
Note that by performing path detection (first path detection or second path detection) between nodes based on node information to be path-detected provided by the controller, path detection can be controlled in a centralized manner, whereby automatic detection of network quality can be appropriately performed according to the PCEP protocol.
Also, more preferably, the network quality detection may also be performed by the result from both the first path detection and the second path detection. In this way, the accuracy of network quality detection can be further improved by both the results of bidirectional path detection.
According to an embodiment, the first path detection of the at least one second node is performed in parallel. For example, path detection is performed in parallel from each of the at least one first node to each of the at least one second node. According to the embodiment, the first path detection for the at least one second node may also be performed sequentially, and the order of the path detection may be determined arbitrarily as long as the path detection between all nodes is completed.
According to an embodiment, the second path detection of the at least one first node is performed in parallel. For example, path detection is performed in parallel from each of the at least one second node to each of the at least one first node. According to the embodiment, the second path detection for the at least one first node may also be performed sequentially, and the order of the path detection may be determined arbitrarily as long as the path detection between all nodes is completed.
According to an embodiment, the second path detection is performed serially after the first path detection or in parallel with the first path detection.
According to an embodiment, the first node information refers to node list information of the at least one second node, the second node information including address information of the at least one first node.
According to an embodiment, the result of the path detection comprises information relating to the path between the nodes. According to an embodiment, the information related to the path between nodes includes path delay, jitter, round trip time, transmission rate, etc. between nodes. It should be understood that the listed information is merely exemplary, and the result of the path detection may be other types of information as long as it can be used to detect the communication quality interface of the path. The information related to the path between the nodes may also be other types of data information as long as it is related to the state, quality of the path.
By the method, in a centralized network architecture, good automatic detection of the quality index of the whole network can be realized based on the PCEP protocol. In particular, by centralized control of PCEs (e.g., controllers), network quality detection-related information (e.g., information of nodes of network communication quality to be detected) can be well determined, whereby appropriate path quality detection can be performed between nodes according to the obtained information, thereby improving the efficiency of network quality detection.
Moreover, according to the embodiment, quality detection among multiple nodes in the network can be realized through centralized control, and the controller can master the path and quality index information of the whole network in real time, which is the basis of service guarantee and path optimization calculation.
In an implementation of network quality detection according to the present invention, the network quality detection may be initiated by the controller or by a node comprised in the network.
Hereinafter, a network quality detection method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Specifically, a network quality detection method based on the PCEP protocol according to an embodiment of the present invention will be described below with reference to fig. 2. In the example shown in fig. 2, the first path computation client PCC-a and the other path computation client PCCs perform network quality detection under the control of the controller. However, it should be understood that what is shown in fig. 2 is merely an example, and the network quality detection approach shown in fig. 1 may be suitably extended to a case of network detection between at least one first path computation client PCC-a and other path computation client PCCs, where path detection between each first path computation client PCC-a and other path computation client PCCs may be performed as shown in fig. 2.
Fig. 2 shows a flowchart of an example of a PCEP protocol-based network quality detection method according to an embodiment of the present invention. In the method, network quality detection is initiated by a path computation client. As shown in fig. 2, the network quality detection method includes:
step S201, the PCC-a sends a route tracking initialization (traceroute) message to the controller, and starts a network detection process.
Step S202, after receiving the TraceRouteN message, the controller returns a PCC list about other PCCs in the network to the PCC-A. It is noted that all other PCCs may be listed in the PCC list, or an appropriate number of PCCs selected from all other PCCs, which may be controlled by the controller, i.e. the controller may control which of the other PCCs within the network are included in the PCC list.
Step S203, the PCC-a initiates a Traceroute path detection command to each PCC listed in the PCC list according to the information in the PCC list, so as to perform path detection (referred to as "forward path detection") on the PCCs listed in the PCC list from the PCC-a, thereby obtaining results of all forward path detection from the PCC-a to the listed PCCs. As described above, the forward path detection for the listed PCCs may be performed in parallel or sequentially.
Step S204, the controller sends a message to the listed PCC in the PCC list, wherein the message contains the address information of the PCC-A. By way of example, the message may be transmitted via the extended PCEP protocol, e.g., as a trace back (TraceBack) message.
In step S205, each PCC of the listed PCCs initiates a Traceroute detection command to the PCC-a according to the address information of the PCC-a in the message to perform a route detection (referred to as "reverse route detection") on the PCC-a, thereby obtaining all reverse route detection results from the listed PCC to the PCC-a. As described above, reverse path detection from the listed PCCs to PCC-a may be performed in parallel or sequentially. The result of the reverse path detection is reported to the controller. As an example, the result may be transmitted by extending the existing PCEP protocol, e.g., as a trace result (TraceResult) message.
In step S206, the controller sends the result to the PCC-a.
Step S207, the PCC-a generates network quality data between the PCCs in the network according to the detected result of the forward path detection to the PCC listed in the PCC list and the result of the reverse path detection from the listed PCC to the PCC-a returned by the controller, and the network quality data is used as a data basis for guiding the service to different links subsequently. The result of the path detection includes data about path delay, jitter, round trip time, transmission rate, and other information between nodes.
It should be understood that the sequence of steps in the network detection method described above with respect to fig. 2 is merely exemplary and not limiting. In other implementations, the steps may be performed in parallel or the order of the steps may be reversed without departing from the spirit and scope of the invention. For example, the forward path detection associated with steps S202 and S203 may be performed in parallel with or after the reverse path detection associated with steps S204 and S205. As another example, the sequence of S202-S204-S203-S205 may also be followed, and wherein S202 and S204 may be performed in front-to-back or in parallel, and S203 and S205 may be performed in front-to-back or in parallel.
Fig. 3 schematically illustrates a network quality detection operation according to an embodiment of the present invention, wherein ① through ⑥ shown in the drawing may correspond to the operations of the above-described steps S201 through S206, respectively.
Although it is shown above that the network quality detection is performed using the results of both the forward and reverse path detections in the network quality detection method according to the embodiment of the present invention, as described previously, it is sufficient to use one of the forward and reverse path detections to achieve improved PCEP-based automatic detection of network quality.
In the PCEP protocol-based network quality detection method described based on fig. 2, the network quality detection is initiated by the path computation client and is made by the path computation client according to the path detection result, but the network quality detection method according to the embodiment of the present invention is not limited thereto. For example, network quality detection may also be initiated by the controller and made by the controller based on path detection results.
Fig. 4 shows a flowchart of an example of a PCEP protocol-based network quality detection method according to another embodiment of the present invention. As shown in fig. 4, the network quality detection method includes:
in step S401, the controller starts a network quality detection process. As an example, the controller may send information to the node to ask whether the node is ready for network quality detection. After receiving the node's feedback message as preparation, the controller may perform subsequent operations to start network quality detection.
In step S402, the controller actively sends a PCC list to the PCC-a regarding other PCCs within the network. It is noted that all other PCCs may be listed in the PCC list, or an appropriate number of PCCs selected from all other PCCs, which may be controlled by a controller which may control which of the other PCCs within the network are included in the PCC list.
It should be understood that steps S401 and S402 may be combined into a single step. Specifically, in a single step of the merging, the controller may actively send a PCC list to the PCC-a on other PCCs within the network while issuing instructions to initiate the network quality detection process, or the controller may initiate the network quality detection process by actively sending a PCC list to the PCC-a on other PCCs within the network.
Step S403, the PCC-a initiates a Traceroute path detection command to the PCC in the PCC list according to the information in the PCC list, so as to perform forward path detection on the PCC in the PCC list, and the controller collects all results of the forward path detection. As described above, the forward path detection for the listed PCCs may be performed in parallel or sequentially.
Step S404, the controller sends a TraceBack message to the PCC in the PCC list, and the TraceBack message contains the address information of the PCC-A.
Step S405, each PCC in the listed PCCs initiates a reverse Traceroute path detection command to the PCC-A according to the address information of the PCC-A in the traceBack message so as to perform reverse path detection on the PCC-A, collects all reverse path detection results from the listed PCC to the PCC-A, and then reports the reverse path detection results to the controller through the traceResult message. As described above, reverse path detection from the listed PCCs to PCC-a may be performed in parallel or sequentially.
Step S406, the controller generates network quality data between the PCCs in the network according to the result of the forward path detection to the listed PCC detected by the PCC-a and the result of the reverse path detection to the PCC-a listed PCC, and the network quality data is used as a data basis for subsequently guiding the service to different links.
It should be understood that the sequence of steps in the network detection method described above with respect to fig. 4 is merely exemplary and not limiting. In other implementations, the steps may be performed in parallel or the order of the steps may be reversed without departing from the spirit and scope of the invention. For example, the controller may control the reverse path detection to be sequentially performed after completing the forward path detection as needed, or may request the forward path detection and the reverse path detection to be performed at the same time. The forward path detection associated with steps S402 and S403 may be performed in parallel with or after the reverse path detection associated with steps S404 and S405. For another example, the sequence of S402-S404-S403-S405 may also be followed, and wherein S402 and S404 may be reversed front to back or executed in parallel, and S403 and S405 may be reversed front to back or executed in parallel.
The exemplary method described above may enable service-oriented bi-directional path, quality detection, and network-oriented end-to-end indicator detection.
As an example, the network quality detection method according to the embodiment of the present invention may be implemented based on extending the PCEP protocol on the basis of the existing PCEP protocol architecture. An extended implementation of the PCEP protocol according to embodiments will be described below with reference to the accompanying drawings.
The four messages traceroute, PCC list, TraceBack and TraceResult described above are defined, according to an embodiment, based on the PCEP protocol, with a structural extension consistent with other PCEP messages.
The TraceRouteN Message only needs to carry a Message header of a common PCEP protocol, and the TraceRouteN Message contains a Message Type (Message-Type) field to indicate the Message Type.
Referring to fig. 5, the PCC list message includes an address type home field (AT) and a corresponding other plurality of PCC addresses PCC-1 to N. The AT field indicates the type of PCC address, including both IPv4 or IPv6 types.
Referring to fig. 6, the TraceBack Message includes an AT field, a Message originating source Address (4 bytes or 16 bytes), and a Message originating destination Address (4 bytes or 16 bytes).
Referring to fig. 7, the TraceResult message includes an AT field, a path Hop count (Hop Num), a source Address (4 bytes or 16 bytes), a Destination Address (Destination Address, 4 bytes or 16 bytes), a Hop count number (Hop No., 8 bits), an Average Delay (12 bits), an Average Jitter (12 bits), and an IP Address (Hop Address, 4 bytes or 16 bytes) corresponding to the current Hop count.
It should be understood that the network quality detection method of the present invention can also be implemented by other PCEP extensions, and even can be implemented based on other means besides PCEP.
In the above embodiment, the present invention utilizes the controller to implement the path quality detection among the PCCs in the network in a centralized control manner, and through the centralized control manner, the controller can grasp the path and quality index information in the entire network in real time, so as to provide references for the subsequent path optimization and service guarantee. It should be understood that the method illustrated by the present invention is not only applicable to the PCEP protocol, but also to other protocols. In addition, the method can also be applied to various network deployment environments.
According to an embodiment, the network quality detection scheme of the present invention may also be implemented by a controller of the network or a node of the network.
According to an embodiment, there is provided a controller for network quality detection, the network comprising at least two nodes, the controller being configured to send network quality detection related information to the nodes based on a path computation element communication protocol, PCEP; wherein the network quality is detected based on the network quality detection related information.
According to an embodiment, the network quality detection related information is node list information indicating nodes to be network quality detected.
According to an embodiment, path detection is performed for the indicated node to detect network quality according to the result of the path detection.
According to an embodiment, the controller may detect the network quality according to a result of the path detection. Alternatively, the results of the path detection may be provided to nodes in the network, whereby the network quality is detected by the nodes.
According to an embodiment, the controller sends information to a node in response to a path detection request from the node, or autonomously sends node information to a node.
According to an embodiment, there is provided a node for network quality detection, the network comprising a controller and at least two of the nodes, the node being configured to obtain network quality detection related information from the controller based on a path computation element communication protocol, PCEP; and performing path detection between nodes based on the information related to the network quality detection, wherein the network quality is generated based on the result of the path detection.
According to an embodiment, the network quality may be detected by the controller according to a result of the path detection. Alternatively, the results of the path detection may be provided to nodes in the network, whereby the network quality is detected by the nodes.
According to an embodiment, the invention also relates to a network quality detection system, the system comprising a controller and at least two nodes, wherein the controller is configured to send network quality detection related information to the nodes based on a path computation element communication protocol, PCEP; and the nodes detect paths among the nodes according to the information related to the network quality detection, wherein the network quality among the nodes is generated based on the result of the path detection.
According to an embodiment, the results of the path detection may be used by the controller or the node to detect the network quality.
It should be understood that the controllers and nodes in the network quality detection system may be the controllers and nodes for network quality detection as described above, but may be different.
Fig. 8 exemplarily shows a network quality detection system according to the present invention. The controllers and nodes (PCC-a, PCC-1-N) shown therein may perform network quality detection operations as illustrated by the flow diagrams of fig. 2 or 4 as described previously, and thus an exemplary network quality detection operation is illustrated in fig. 8 with arrows corresponding to the operations shown in fig. 2. It should be understood that the controller and nodes in the network quality detection system shown in fig. 8 may also perform network quality detection operations in other manners, such as the network quality detection operation flow shown with reference to fig. 4, or other network quality detection operation manners or sequences described above, or other manners or sequences.
It should be understood that the controller, the node, and the network quality detection system of the network described above may also be adapted to perform the operations in the quality detection method described earlier, or include components capable of implementing functions corresponding to the operations in the quality detection method described earlier.
< application example >
The techniques of this disclosure can be applied to a variety of products.
Fig. 9 shows an example of a hardware configuration of a controller or node according to the present invention.
A Central Processing Unit (CPU)1801 functions as a data processing unit that performs various types of processing based on a program stored on a Read Only Memory (ROM)1802 or a storage unit 1808. For example, the CPU 1801 executes processing based on the aforementioned sequence. A Random Access Memory (RAM)1803 stores programs, data, and the like executed by the CPU 1801. The CPU 1801, ROM 1802, and RAM1803 are connected to each other via a bus 1804.
A CPU 1801 is connected to an input and output interface 1805 via a bus 1804, and an input unit 1806 constituted by various kinds of switches, a keyboard, a mouse, a microphone, and the like, and an output unit 1807 constituted by a display, a speaker, and the like are connected to the input and output interface 1805. For example, the CPU 1801 executes various types of processing in response to an instruction input from the input unit 1806, and outputs a processing result to the output unit 1807.
A storage unit 1808 connected to the input and output interface 1805 is constituted by a hard disk, for example, and stores thereon a program executed by the CPU 1801 and various types of data. The communication unit 1809 communicates with an external device via a network such as the internet or a local area network.
A drive 1810 connected to the input and output interface 1805 drives a removable medium 1811 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory (e.g., a memory card), and acquires various types of data such as content and key information recorded thereon. For example, by using the acquired content and key data, processing for network quality detection and the like is executed by the CPU 1801 based on a reproduction program.
The method and system of the present invention may be implemented in a number of ways. For example, the methods and systems of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
So far, the network quality detection method and the related controller, node and system according to the present invention have been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
The method and system of the present invention may be implemented in a number of ways. For example, the methods and systems of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (14)
1. A method of network quality detection, the network comprising a controller, the method comprising:
obtaining network quality detection related information from the controller based on a path computation element communication protocol, PCEP; wherein the information related to the network quality detection includes node list information of nodes to be network quality detected, which are included in the network, and
performing path detection for the nodes indicated in the node list information, so as to detect network quality between the nodes,
wherein the nodes included in the network to be subjected to network quality detection comprise at least one first node and at least one second node, wherein,
the at least one first node acquires first node information about the at least one second node from the controller based on a PCEP protocol, such that the at least one first node performs a first path detection for the at least one second node based on the first node information, an
The at least one second node acquires second node information about the at least one first node from the controller based on the PCEP protocol, so that the at least one second node performs second path detection for the at least one first node based on the second node information,
wherein at least one of a result of the first path detection and a result of the second path detection is fed back to the controller via the PCEP protocol, an
Wherein the network quality between the at least one first node and the at least one second node is detected based on at least one of a result of the first path detection and a result of the second path detection.
2. The network quality detection method of claim 1, wherein the node list information includes node addresses of nodes.
3. The network quality detection method of claim 2, wherein the node addresses of which nodes are included in the node list information are decided by a controller.
4. The network quality detection method of claim 1, wherein the first path detection for the at least one second node is performed in parallel.
5. The network quality detection method of claim 1, wherein the second path detection to the at least one first node is performed in parallel.
6. The network quality detection method according to claim 1, wherein the second path detection is performed serially after the first path detection or in parallel with the first path detection.
7. The network quality detection method according to claim 1, wherein the first node information refers to address information of the at least one second node, and the second node information includes the address information of the at least one first node.
8. The network quality detection method according to any one of claims 1 to 7, wherein the result of the path detection includes information relating to a path between nodes.
9. The network quality detection method of claim 8, wherein the information related to the path between nodes comprises at least one of path delay, jitter, round trip time, transmission rate between nodes.
10. A controller for network quality detection, the network comprising at least two nodes, the controller being configured to:
sending network quality detection related information to a node based on a path computation element communication protocol (PCEP); wherein the network quality detection related information is node list information indicating nodes to be network quality detected,
wherein path detection is performed for the nodes indicated in the node list information to detect network quality between the nodes,
wherein the at least two nodes comprise at least one first node and at least one second node to be network quality tested, wherein,
the at least one first node acquires first node information about the at least one second node from the controller based on a PCEP protocol, such that the at least one first node performs a first path detection for the at least one second node based on the first node information, an
The at least one second node acquires second node information about the at least one first node from the controller based on the PCEP protocol, so that the at least one second node performs second path detection for the at least one first node based on the second node information,
wherein the network quality between the at least one first node and the at least one second node is detected based on at least one of a result of the first path detection and a result of the second path detection, an
Wherein the controller is further configured to receive at least one of a result of the first path detection and a result of the second path detection that are fed back via the PCEP protocol.
11. The controller of claim 10, wherein the controller detects the network quality according to a result of the path detection.
12. The controller of claim 10, wherein the controller transmits node list information to a node in response to a path detection request from the node or autonomously.
13. A node for network quality detection, the network comprising a controller, the node configured to:
obtaining network quality detection related information from the controller based on a path computation element communication protocol, PCEP; wherein the information related to the network quality inspection includes node list information indicating other nodes to be network quality inspected, which is included in the network, and
performing path detection between the node and other nodes indicated in the node list information, in order to detect network quality,
wherein the node acquires first node information on the other node from the controller based on a PCEP protocol so that the node performs first path detection on the other node based on the first node information, and
the other node acquires second node information about the node from the controller based on the PCEP protocol, so that the other node performs second path detection for the node based on the second node information,
wherein the network quality between the node and the other node is detected based on at least one of a result of the first path detection and a result of the second path detection, and
wherein the controller is further configured to receive at least one of a result of the first path detection and a result of the second path detection that are fed back via the PCEP protocol.
14. A network quality detection system, the system comprising a controller and at least two nodes, wherein,
the controller is configured to send network quality detection related information to the node based on a path computation element communication protocol, PCEP; wherein the network quality detection-related information is node list information indicating nodes to be network quality detected, an
Wherein path detection is performed for the nodes indicated in the node list information to detect network quality between the nodes,
wherein the at least two nodes comprise at least one first node and at least one second node to be network quality tested, wherein,
the at least one first node acquires first node information about the at least one second node from the controller based on a PCEP protocol, such that the at least one first node performs a first path detection for the at least one second node based on the first node information, an
The at least one second node acquires second node information about the at least one first node from the controller based on the PCEP protocol, so that the at least one second node performs second path detection for the at least one first node based on the second node information,
wherein the network quality between the at least one first node and the at least one second node is detected based on at least one of a result of the first path detection and a result of the second path detection, an
Wherein the controller is further configured to receive at least one of a result of the first path detection and a result of the second path detection that are fed back via the PCEP protocol.
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