WO2023051050A1 - 网络监测方法、装置及计算机存储介质 - Google Patents

网络监测方法、装置及计算机存储介质 Download PDF

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Publication number
WO2023051050A1
WO2023051050A1 PCT/CN2022/111550 CN2022111550W WO2023051050A1 WO 2023051050 A1 WO2023051050 A1 WO 2023051050A1 CN 2022111550 W CN2022111550 W CN 2022111550W WO 2023051050 A1 WO2023051050 A1 WO 2023051050A1
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verification
frame
operation code
oam
oam frame
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PCT/CN2022/111550
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English (en)
French (fr)
Inventor
朱向阳
喻敬海
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中兴通讯股份有限公司
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Priority to US18/689,629 priority Critical patent/US20250007807A1/en
Priority to EP22874446.2A priority patent/EP4398534A4/en
Publication of WO2023051050A1 publication Critical patent/WO2023051050A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/087—Jitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/04—Network management architectures or arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0829—Packet loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H04L43/106—Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/28—Timers or timing mechanisms used in protocols

Definitions

  • the present application relates to the technical field of communication, and in particular to a network monitoring method, device and computer storage medium.
  • Time-Sensitive Networking is a new industrial communication technology that is being actively promoted by the international industry.
  • TSN allows periodic and aperiodic data to be transmitted in the same network, which makes standard Ethernet have the advantage of deterministic transmission, and has become a key technology that is widely focused through the independent standardization process of manufacturers.
  • TSN is widely used in automotive Ethernet networks, Industrial Ethernet and carrier networks, etc. With the extensive research and deployment of TSN in various harsh business scenarios, requirements for its security and reliability have been raised. However, in related technologies, there is a lack of monitoring for TSN network services, it is difficult to know the service status of the TSN network, and the reliability and security of TSN in various service scenarios cannot be guaranteed.
  • Embodiments of the present application provide a network monitoring method, device, and computer storage medium.
  • the embodiment of the present application provides a network monitoring method, which is applied to a target node, and the target node is set on a TSN network.
  • the method includes: receiving an OAM frame from a source node, wherein the OAM frame includes An operation code and verification data corresponding to the operation code, the OAM frame is used to verify the service performance of the TSN network; according to the operation code and the verification data, the performance of the deterministic network Perform verification processing to obtain a verification result; send the verification result to the source node.
  • the embodiment of the present application provides a network monitoring method applied to a source node, the source node is set on a TSN network, the method includes: sending an OAM frame to the target node, the OAM frame includes an operation code and the The verification data corresponding to the operation code, the OAM frame is used to verify the service performance of the TSN network, so that the target node can check the performance of the deterministic network according to the operation code and the verification data Perform verification processing to obtain a verification result and send the verification result to the source node; receive the verification result from the target node.
  • the embodiment of the present application provides a network monitoring device, including a memory, a processor, and a computer program stored on the memory and operable on the processor.
  • a network monitoring device including a memory, a processor, and a computer program stored on the memory and operable on the processor.
  • the processor executes the computer program, the implementation of the present application is realized.
  • the network monitoring method provided by the example.
  • the embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, implements the network monitoring method provided in the embodiment of the present application.
  • FIG. 1 is a flowchart of a network monitoring method applied to a target node provided in an embodiment of the present application
  • FIG. 2 is a schematic diagram of a specific implementation process of step S200 in FIG. 1;
  • FIG. 3 is a schematic diagram of a specific implementation process of step S200 in FIG. 1;
  • FIG. 4 is a schematic diagram of a specific implementation process of step S200 in FIG. 1;
  • FIG. 5 is a flowchart of a network monitoring method applied to a source node provided in an embodiment of the present application
  • FIG. 6 is a schematic diagram of a specific implementation process of step S400 in FIG. 5;
  • FIG. 7 is a schematic diagram of a specific implementation process of step S400 in FIG. 5;
  • FIG. 8 is a schematic diagram of a specific implementation process of step S400 in FIG. 5;
  • FIG. 9 is a schematic diagram of a specific implementation process of step S400 in FIG. 5;
  • FIG. 10 is a schematic diagram of an OAM frame encapsulation format for verifying the performance of a deterministic network provided by an embodiment of the present application
  • Fig. 11 is a flow chart of message redundancy monitoring and verification provided by the embodiment of the present application.
  • FIG. 12 is a flow chart of frame preemption capability monitoring and verification provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of an interactive process of TSN network monitoring OAM frames provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of an OAM frame encapsulation format as a verification result provided by an embodiment of the present application.
  • FIG. 15 is a schematic diagram of an application scenario of a network monitoring method provided by an embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of a network monitoring device provided by an embodiment of the present application.
  • This application provides a network monitoring method.
  • the target node receives the OAM frame from the source node, it can extract the operation code and check data in the OAM frame, and use the operation code and check data to check the deterministic The performance of the network is verified, and the verification result is obtained and sent to the source node.
  • different OAM frames can have different operation codes, and the check data corresponds to the operation code. Therefore, the check data of different OAM frames can be different, so that the target node can The operation code and verification data of the deterministic network are verified to realize the diversification of TSN network service performance monitoring, which can comprehensively monitor the service status of the TSN network, facilitate the user to manage the TSN, and improve the reliability of the TSN .
  • FIG. 1 shows a flow chart of a network monitoring method provided by an embodiment of the present application.
  • the network monitoring method can be applied to a target node.
  • the network detection method includes but is not limited to the following steps S100 to S300 .
  • Step S100 receiving an OAM frame from a source node, wherein the OAM frame includes an operation code and verification data corresponding to the operation code, and the OAM frame is used to verify the service performance of the TSN network.
  • the OAM frame from the source node includes an operation code and check data, wherein the operation code is located in the OpCode field in the OAM frame and can be used to indicate the type of the OAM frame.
  • the operation code By extending the operation code , define the type of the OAM frame, for example, in the case that the operation code is the first operation code, it may be indicated that the OAM frame is used for packet redundancy monitoring. However, if packet redundancy monitoring is required, the corresponding packet redundancy verification data needs to be carried in the OAM frame.
  • the operation code corresponds to the verification data
  • the verification data corresponding to different operation codes Can be different
  • the verification data is located in the DATA field in the OAM frame, and the DATA field can contain the verification data corresponding to the operation code, and can also contain all the verification data required for performance monitoring of the deterministic network, so that The target node can use the data carried in the OAM frame to perform corresponding verification processing on the service performance of the TSN network.
  • both the source node and the target node are set in the TSN network
  • the source node can be the network node that acts as the source to send the OAM frame, that is, the previous transmission node of the target node in the transmission link, or it can be the transmission link
  • the destination node can be the network node that accepts the OAM frame as the sink, that is, the next receiving node that the source node sends the OAM frame in the transmission link, or it can be the termination node in the transmission link.
  • the transmission link is that the first node sends the OAM frame to the second node, and the second node sends the OAM frame to the third node, wherein, between the first node and the second node, the first node is the source node, the second node is the target node; between the second node and the third node, the second node is the source node, and the third node is the target node; in addition, between the first node, the second node and the third node Among the three nodes, the first node is the source node, and the third node is the target node.
  • Step S200 perform verification processing on the performance of the deterministic network according to the operation code and verification data to obtain a verification result.
  • Step S300 sending the verification result to the source node.
  • the target node can use the received OAM frame to verify the performance of the deterministic network, but the operation code is different, and the verification data carried in the OAM is different. Therefore, the target node can use the received OAM frame.
  • the operation code identifies the type of the OAM frame, and then uses the verification data in the OAM to perform corresponding deterministic network performance verification monitoring to obtain the verification result, and the target node will send the verification result back to the source node.
  • the operation code carried in the OAM frame is the first operation code
  • the first operation code indicates that the OAM frame is used for packet redundancy monitoring
  • the OAM frame carries the first calibration code corresponding to the first operation code.
  • the first verification data may include message serial number, number of redundant messages and message receiving time, etc., which are used to monitor the relevant data of message redundancy. Therefore, the target node carries the first The OAM frame of the operation code can use the first verification data in the OAM frame to monitor the message redundancy, and the target node can also send the verification result obtained by the verification process to the source node, so that users can understand the status of the TSN network. Service performance, adjust and manage TSN accordingly, and improve the reliability of the TSN network. By extending the OAM frame, the information carried by the OAM frame is enriched, so that the target node can monitor different service performances of the TSN according to the extended OAM frame, and the diversification of the TSN monitoring function is improved.
  • the performance of the deterministic network that the target node can use to monitor the operation code and check data in OAM includes message redundancy, message periodicity and frame preemption capability
  • the operation in OAM frame code is the first operation code
  • the verification data includes the sequence number of the message, the number of redundant messages, the sending time of the message and the receiving time of the message
  • the target node can use the operation code and the verification data in the OAM frame
  • the data monitors the message redundancy of TSN to obtain the message redundancy verification result
  • the operation code in the OAM frame is the second operation code
  • the verification data includes the message sending time and message sending cycle value , message period fluctuation range and deviation from the message ratio
  • the target node can use the operation code and verification data in the OAM to monitor the message periodicity of TSN, and obtain the message periodicity verification result
  • the operation code in the OAM frame is the third operation code
  • the verification data includes the frame preemption configuration parameters of the source node and the frame preemption parameter verification status
  • step S200 in the embodiment shown in FIG. 1 also includes, but is not limited to, the following steps S210 to S220.
  • step S210 the number of received packets is obtained according to the timing duration, the sequence numbers of the received packets are the same, and the timing duration is obtained according to the first receiving time, sending time and maximum delay value.
  • Step S220 according to the number of received messages, the number of redundant messages and the time comparison result, the message redundancy verification result is obtained, wherein the time comparison result is obtained by the difference between the first receiving time and the sending time, and the maximum time delay It is obtained by comparing the difference between the value and the minimum delay value.
  • the check data in the OAM frame includes the sequence number, the number of redundant messages, the first receiving time, the sending time, the maximum time Delay value and minimum delay value.
  • the target node can extract the sequence number, number of redundant packets, first receiving time, sending time, maximum delay value and minimum delay from the OAM frame value.
  • the target node obtains the timing duration of message redundancy monitoring according to the first receiving time, sending time and maximum delay value, and counts the number of packets with the same serial number received by the target node in real time within the timing duration, and obtains the received message number of texts.
  • the target node sends the message redundancy check failure result to the source node.
  • the message redundancy check has not been completed, continue to receive messages, and update the number of received messages in real time according to the message sequence number.
  • the target node in order to monitor the reliability of TSN in redundant transmission, when the target node receives the OAM frame and the number of received packets does not exceed the number of redundant packets, the target node will use the first receiving time of the OAM frame and The difference of the sending time is compared with the difference between the maximum delay value and the minimum delay value to obtain the time comparison result.
  • the difference between the first receiving time and the sending time is greater than the difference between the maximum delay value and the minimum delay value, it can be considered that the delay requirement of redundant transmission is not met, and the time comparison result is a comparison failure result.
  • the time comparison result is a comparison failure result
  • the packet redundancy verification fails, and the target node sends the packet redundancy verification failure result to the source node .
  • the difference between the first receiving time and the sending time is less than or equal to the difference between the maximum delay value and the minimum delay value, it can be considered that the delay requirement of redundant transmission is met, and the time comparison result is a comparison success result.
  • the number of received packets is equal to the number of redundant packets and the time comparison result is a relatively successful result
  • it can be considered that the packet redundancy performance of the current TSN can meet the business requirements, and the packet redundancy verification is successful.
  • the message redundancy verification success result is a comparison failure result
  • step S200 in the embodiment shown in FIG. 1 also includes but is not limited to the following steps S230 to S240 .
  • step S230 the number of deviation messages is obtained according to the deviation message ratio and the preset number threshold.
  • step S240 a message periodicity check result is obtained according to the first check results corresponding to the received multiple OAM frames and the number of deviation messages.
  • the check data corresponding to the second operation code in the OAM frame includes the second receiving time, the message period value, the period fluctuation value and Deviation message ratio.
  • the target node can extract the second receiving time, message period value, period fluctuation value and deviation message ratio from the OAM, so that the target node can Periodic value and periodic fluctuation value get the message periodic condition, that is, the difference between the message periodic value and the periodic fluctuation value is used as the lower limit value of the message periodic condition, and the sum of the message periodic value and the periodic fluctuation value is used as the message periodic condition upper limit value.
  • the target node can calculate the number of deviated packets according to the ratio of deviated packets and the preset quantity threshold, and the target node can record the receiving time of all OAM frames received, and take the receiving time of the last OAM frame as the third Receiving time, by judging whether the difference between the second receiving time and the third receiving time satisfies the message cycle condition, that is, judging whether the difference between the second receiving time and the third receiving time is between the upper limit and the lower limit of the message cycle condition Between the limit values, the corresponding first verification result is obtained. For example, if the deviation packet ratio is 10%, and the preset number threshold is 10, then the number of deviation packets is 1.
  • the packet periodicity monitoring needs to monitor the periodicity of 10 consecutive OAM frames, and 1 OAM frame is allowed An error occurs in the OAM frame, that is, the receiving time difference between two adjacent OAM frames among the 10 OAM frames in the packet periodicity monitoring does not meet the packet periodicity condition.
  • the difference between the second receiving time and the third receiving time satisfies the packet period condition, it can be considered that the packet periodicity verification of the current OAM frame is successful, and the first verification result is the first verification success result.
  • the target node can compare the first verification result and the number of deviation messages corresponding to the received multiple OAM frames in real time, that is, compare the number of currently deviated messages and the number of deviation messages in real time, and when the first verification fails the result If the number is greater than the number of deviation packets, it can be considered that the packet periodicity verification of the current TSN fails, and a packet periodicity verification failure result is obtained.
  • the number of first verification failure results is less than or equal to the number of deviation packets, and the number of first verification results is equal to the preset number threshold, it can be considered that the packet periodic verification of the current TSN is successful, and the packet periodic verification is obtained. successful test result. Therefore, by extending the operation code and check data of the OAM frame, it is possible to periodically check the TSN message and obtain the service performance of the TSN, which facilitates the user to adjust the TSN network and improves the reliability of the TSN.
  • step S200 in the embodiment shown in FIG. 1 also includes but is not limited to the following steps S250 to S260 .
  • step S250 the second frame preemption configuration parameter is obtained, and the second frame preemption configuration parameter is used to represent the frame preemption capability information of the current node.
  • Step S260 according to the first frame preemption configuration parameters and the second frame preemption configuration parameters, obtain the frame preemption verification result.
  • the operation code is the third operation code
  • the corresponding verification data includes the first frame preemption configuration parameter
  • the first frame preemption configuration parameter is used to represent the frame preemption capability information of the source node, which means that when the OAM frame Carrying the third operation code and the first frame preemption configuration parameter, the OAM frame is used to check the frame preemption capability of the TSN. Therefore, when the target node receives the OAM frame carrying the third operation code, the target node extracts the first frame preemption configuration parameters from the verification data in the OAM frame, and obtains the frame preemption capability information of the current node, namely Get the second frame preemption configuration parameters.
  • the target node judges whether the frame preemption capability of the target node is greater than or equal to the frame preemption capability of the source node by analyzing and processing the first frame preemption configuration parameters and the second frame preemption configuration parameters. When it is judged that the frame preemption capability of the target node is greater than or equal to the frame preemption capability of the source node, it is considered that the frame preemption capability verification of the current TSN is successful, and a frame preemption verification success result is obtained. When it is judged that the frame preemption capability of the target node is smaller than that of the source node, it is considered that the frame preemption capability verification of the current TSN has failed, and the frame preemption verification failure result is obtained.
  • the frame preemption verification failure result includes the reason for the frame preemption verification failure, for example, the frame preemption configuration parameter includes multiple configuration information, because the first configuration information in the second frame preemption configuration parameter is smaller than the first The second configuration information in the parameters, and it is judged that the frame preemption capability of the target node is smaller than that of the source node, then the first configuration information in the second frame preemption configuration parameter can be considered as the reason for the failure of the frame preemption verification, and the The first configuration information is recorded in the frame preemption check failure result. Therefore, the reason for the failure of the frame preemption check may include the second frame preemption information.
  • the target node By sending an OAM frame carrying a specified operation code and carrying corresponding verification data to the target node, the target node can perform deterministic network performance verification processing according to the OAM frame to meet user needs. In addition, by recording the cause of the verification failure and sending the verification result and the reason for the verification failure to the source node, it can help users adjust and manage the TSN and improve the reliability of the TSN.
  • FIG. 5 shows a flowchart of a network monitoring method provided by an embodiment of the present application.
  • the network monitoring method can be applied to a source node.
  • the network detection method includes but is not limited to the following steps S400 to S500.
  • Step S400 sending an OAM frame to the target node.
  • the OAM frame includes an operation code and verification data corresponding to the operation code.
  • the OAM frame is used to verify the service performance of the TSN network, so that the target node The performance of the deterministic network is verified and processed, and the verification result is sent to the source node.
  • Step S500 receiving a verification result from a target node.
  • both the source node and the target node are set in the TSN network
  • the OAM frame sent by the source node to the target node includes an operation code and check data
  • the operation code is used to indicate the type of the OAM frame. Therefore,
  • the target node can use the operation code in the OAM frame to verify and monitor the corresponding performance of the deterministic network. For example, the source node sends the OAM frame carrying the first operation code to the target node, so that the target node can use the first operation code. Check the redundancy of TSN packets.
  • the type of the OAM frame is defined, and the check data corresponding to the operation code is carried, so that the target node can receive the OAM frame according to different operation codes and check data.
  • the verification data is used to verify and process different performances of deterministic networks, enriching the monitoring functions required by TSN services. After the target node completes the corresponding performance monitoring process, the source node can receive the verification result from the target node for the performance monitoring. By obtaining the verification result, the service performance of the current TSN can be known, which is convenient for the user to adjust the TSN in time and improve the reliability of the TSN.
  • step S400 in the embodiment shown in FIG. 5 also includes but is not limited to the following step S410 .
  • Step S410 sending the first OAM frame to the target node, the first OAM frame includes the first operation code and the first verification data, the first verification data includes the sequence number, the number of redundant messages, the first receiving time, and the sending time , a maximum delay value and a minimum delay value, so that the target node can obtain a message redundancy check result according to the first OAM frame.
  • the first OAM frame can be used to verify the message redundancy performance of the TSN, wherein the operation code carried by the first OAM frame is the first operation code, and carries the first verification data corresponding to the first operation code .
  • the first verification data includes sequence number, number of redundant packets, first receiving time, sending time, maximum delay value and minimum delay value.
  • the source node sends the first OAM frame to the target node, so that the target node can extract the sequence number, the number of redundant packets, the first receiving time, the sending time, the maximum delay value and the maximum delay value after receiving the first OAM frame.
  • the target node can judge the packet redundancy calibration by the number of received packets and the number of redundant packets extracted from the first OAM frame, the first receiving time, the sending time, the maximum delay value and the minimum delay value. check whether the verification is successful, and obtain the corresponding message redundancy verification result.
  • the verification process if the number of received messages counted in real time is greater than the number of redundant messages, it can be considered that the message redundancy check fails, and the source node can obtain the message redundancy check sent by the target node.
  • the failure result of the verification is terminated at the same time, and the message redundancy verification is stopped, and the sending of the first OAM frame to the target node is stopped.
  • the source node when the number of received packets counted in real time during the verification process does not exceed the number of redundant packets, that is, the source node has not received the packet redundancy verification result from the target node, it can be considered that the packet If the text redundancy check is not completed, the source node continues to send the first OAM frame to the target node until the message redundancy check result from the target node is received. Therefore, by expanding the operation code type of the OAM frame and extending the check data corresponding to different types of operation codes in the OAM frame, the target node can perform message redundancy according to the data carried in the OAM frame after receiving the OAM frame. Verification, which realizes the verification processing of the performance of the deterministic network and improves the reliability of TSN.
  • step S400 in the embodiment shown in FIG. 5 also includes but is not limited to the following step S420 .
  • Step S420 sending a second OAM frame to the target node, the second OAM frame includes a second operation code and second verification data, and the second verification data includes a second receiving time, message period value, period fluctuation value and deviation report message ratio, so that the target node obtains the message periodicity check result according to the second OAM frame and the preset quantity threshold.
  • the operation code carried in the second OAM frame is the second operation code
  • the second verification data corresponding to the second operation code includes the second receiving time, message period value, period fluctuation Value and deviation message ratio, so that the source node sends the second OAM frame to the target node, which can make the target node extract the second receiving time, message period value, period fluctuation value and deviation message ratio, and according to the preset number threshold , the deviation message ratio, the second receiving time of the current second OAM frame, the receiving time of the last second OAM frame, the message cycle value and the cycle fluctuation value to perform message periodicity verification, and obtain the message periodicity verification result.
  • the target node can obtain the message cycle condition according to the message cycle value and the cycle fluctuation value, and calculate the number of deviated packets according to the preset quantity threshold and the ratio of deviated packets, by comparing the second receiving time with the time of the last OAM frame
  • the first verification result is obtained by the difference between the receiving time and the message cycle condition, so that the target node can obtain the message periodicity verification when the number of the first verification results meets the preset number threshold and meets the deviation message ratio successful result. Therefore, by extending the operation code and check data of the OAM frame, the periodic check of the TSN message can be realized, the service performance of the TSN can be obtained, and the reliability of the TSN can be improved.
  • step S400 in the embodiment shown in FIG. 5 also includes but is not limited to the following steps S430 to S450 .
  • Step S430 acquiring the first frame preemption configuration parameter, the first frame preemption configuration parameter is used to represent the frame preemption capability information of the source node.
  • Step S440 updating the verification data according to the configuration parameters of the first frame preemption.
  • Step S450 sending a third OAM frame to the target node, the third OAM frame includes a third operation code and third verification data, and the third verification data includes the first frame preemption configuration parameters, so that the target node according to the third OAM frame and the second frame preemption configuration parameter to obtain the frame preemption verification result, wherein the second frame preemption configuration parameter is used to represent the frame preemption capability information of the current node.
  • the source node obtains the first frame preemption configuration parameter, that is, the frame preemption capability information of the current source node. Utilize the first frame preemption configuration parameter to update the verification data in the third OAM frame, for example, if the verification data does not carry the frame preemption configuration information, then the first frame preemption configuration parameter is stored in the verification data; If the verification data already carries frame preemption configuration information, replace the existing frame preemption configuration parameters in the verification data with the first frame preemption configuration parameters to obtain the third verification data, that is, the third verification data contains There is a first frame preemption configuration parameter.
  • the source node sends the third OAM frame carrying the third operation code and the third verification data to the target node, so that the target node can perform TSN frame preemption according to the second frame preemption configuration parameters of the current node and the third OAM frame Capability verification processing to obtain the frame preemption verification result. For example, by comparing the second frame preemption configuration parameter with the first frame preemption configuration parameter in the third OAM frame, if the frame preemption capability reflected by the second frame preemption configuration parameter is greater than or equal to the first frame preemption configuration parameter The frame preemption capability of TSN is considered to be successful, and the result of frame preemption verification success is obtained.
  • the target node can perform TSN frame preemption capability verification processing according to the third OAM frame, satisfying user needs need.
  • step S400 in the embodiment shown in FIG. 5 also includes but is not limited to the following steps S460 to S490 .
  • step S460 the verification status is obtained, and the verification status is used to represent the status information of the current node.
  • Step S470 if the verification state is the first verification state, obtain the first frame preemption configuration parameter, the first frame preemption configuration parameter is used to represent the frame preemption capability information of the source node.
  • Step S480 updating the verification data according to the configuration parameters of the first frame preemption, and updating the verification status to the second verification status.
  • Step S490 send the fourth OAM frame to the target node, the fourth OAM frame includes the third operation code and the fourth verification data, the fourth verification data includes the first frame preemption configuration parameters and verification status, so that the target node is in the When the verification state is the second verification state, the target node obtains the frame preemption verification result according to the fourth OAM frame and the second frame preemption configuration parameter, wherein the second frame preemption configuration parameter is used to represent the frame preemption of the current node Capability information, and make the target node update the verification state to the first verification state.
  • the verification data may be fourth verification data corresponding to the third operation code, and the fourth verification data includes the first frame preemption configuration parameters and verification state, so that the source node can send the fourth OAM frame carrying the third operation code to the target node, so that the target node performs frame preemption capability verification processing according to the fourth OAM frame.
  • the source node obtains the state information of the current node, that is, the verification state.
  • the verification state is the first verification state
  • the current node is considered to be in the sending state
  • the frame preemption capability information of the current node is obtained, that is, the first frame preemption configuration parameter, and the first frame preemption configuration parameter is used to update the verification data.
  • the source node also updates the verification state to the second verification state, which means that the current node is in the receiving state, so that the node receiving the OAM frame is in the receiving state, performs frame preemption capability verification, and updates the second verification state Verify data. If the verification data does not carry frame preemption configuration information, store the first frame preemption configuration parameters in the verification data; if the verification data already carries frame preemption configuration information, replace the first frame preemption configuration parameters The existing frame preemption configuration parameters in the verification data are obtained to obtain the fourth verification data, that is, the fourth verification data includes the first frame preemption configuration parameters and the verification status.
  • the target node When the target node receives the fourth OAM frame from the source node, the target node performs frame preemption capability verification according to the third operation code and the second verification state carried in the fourth OAM frame, and obtains the second frame preemption configuration parameters , the frame preemption check result is obtained by comparing the second frame preemption configuration parameters with the first frame preemption configuration parameters. If the current node can be a network node serving as a source to send the fourth OAM frame, then update the second verification state to the first verification state, so that the current node, when the verification state is the first verification state, The first frame preemption configuration parameter in the fourth OAM frame is updated by using the frame preemption configuration parameter of the current node, and the first check state is updated to the second check state to obtain an updated fourth OAM frame.
  • the current node sends the updated fourth OAM frame to the next network node, so that the subsequent node completes the verification process of the frame preemption capability.
  • the nodes in the transmission link complete the corresponding frame preemption capability verification processing according to the verification status, which meets the user's needs and improves the reliability of TSN.
  • FIG. 10 is a schematic diagram of an OAM frame encapsulation format for verifying performance of a deterministic network provided by an embodiment of the present application.
  • the operation code is stored in the OpCode field in the OAM frame, and different operation codes are represented by changing the value of OpCode to represent different types of OAM frames, and the check data stored in the DATA field is the same as the operation code
  • the node can determine the performance verification process that the current node needs to perform according to the value of the OpCode, that is, the operation code, and use the verification data in the DATA field to perform the verification process.
  • the opcode can be marked as the first opcode, indicating that the frame is used for packet redundancy check and monitoring, and the DATA field in the OAM can store a sequence No.
  • the operation code can be marked as the second operation code, indicating that the OAM frame is used for periodic packet verification and monitoring, and the DATA field in the OAM frame can store There are packet cycle value cycleValue, cycle fluctuation value cycleJitter, deviation packet ratio failPacketRate and packet reception time rxTimestamp.
  • the operation code can be marked as the third operation code, indicating that the OAM frame is used for frame preemption capability verification and monitoring, and the DATA field in the OAM frame can store frame Preemption configuration parameters, including frame preemption support status isBrCap, frame preemption enabled status isBrEnabled, frame preemption check status isBrChecked, frame preemption parameter addFragSize and multi-level frame preemption level brMultiLevel.
  • sequence number in the OAM frame carrying the first operation code may be carried by using the R-TAG defined in the TSN redundancy protocol 802.1CB.
  • the check data can be obtained through user settings, or can be obtained through control system configuration.
  • the node receiving the OAM frame will identify the OAM frame and the type of the OAM frame. If the verification function corresponding to the operation code in the node is configured to be enabled, the verification data of the DATA field in the OAM frame will be extracted for verification. check.
  • FIG. 11 is a flow chart of message redundancy monitoring and verification provided by the embodiment of the present application, and the process specifically includes steps S101 to S105 .
  • Step S101 receiving the first OAM frame, extracting the sequence number, sending time, receiving time, maximum delay value, minimum delay value and the number of redundant packets.
  • Judging C101 is the first OAM frame carrying the sequence number received for the first time? If yes, execute step S102; if not, execute judgment C102.
  • Step S102 initialize the number of received packets and start a timer.
  • Judging C102 is the timer reset to zero, or is the number of received packets greater than or equal to the number of redundant packets? If yes, execute step S103; if not, execute judgment C103.
  • Judgment C103 is the difference between the receiving time and sending time within the minimum delay value and the maximum delay value? If yes, execute judgment C104; if not, execute step S103.
  • Step S103 sending the message redundancy verification failure result to the source node, and executing step S105.
  • Judgment C104 the number of received messages is increased by one, is the number of received messages equal to the number of redundant messages? If yes, execute step S104; if no, execute step S105.
  • Step S104 when the timer is reset to zero, send a message redundancy verification success result to the source node.
  • step S105 the current verification process ends.
  • the timing duration of the timer is calculated from the sending time, receiving time and the maximum delay value, and the timing duration can be the value obtained by adding the maximum delay value on the basis of the difference between the receiving time and the sending time .
  • the packet redundancy check is successful, and a packet is sent to the source node. The successful result of the text redundancy check.
  • the target node receives a first OAM frame at the first receiving time of 123457000, the serial number carried by the first OAM frame is 123, and receives the second OAM frame at the second receiving time of 123457100.
  • the first OAM frame of 123 is a first OAM frame at the first receiving time of 123457000, the serial number carried by the first OAM frame is 123, and receives the second OAM frame at the second receiving time of 123457100.
  • the first OAM frame of 123 is
  • the process for the target node to receive the first OAM frame for the first time to perform message redundancy check is specifically (1) to (7).
  • the timer has not returned to 0 and the number of received packets is less than the number of redundant packets.
  • the difference between the sending time and the first receiving time is 334, so the difference is greater than the minimum delay value, and the difference is smaller than the maximum delay value, and the number of received messages is increased by 1.
  • the number of received messages is not equal to the number of redundant messages.
  • the process for the target node to receive the first OAM frame with the same sequence number for the message redundancy check is specifically (1) to ( 6).
  • the timer is not reset to 0 and the number of received packets is 1, that is, the number of received packets is less than the number of redundant packets.
  • the difference between the sending time and the second receiving time is 434, so the difference is greater than the minimum delay value, and the difference is smaller than the maximum delay value, and the number of received messages is increased by 1. At this time, the number of received messages for 2.
  • the number of received messages is equal to the number of redundant messages, and the first OAM frame with the sequence number 123 is not received before the timer resets to zero, then send a message redundancy check to the source node successful test result.
  • FIG. 12 is a flow chart of frame preemption capability monitoring and verification provided by the embodiment of the present application, and the process specifically includes steps S201 to S209 .
  • step S201 a fourth OAM frame is received, and a verification status in the fourth OAM frame is extracted.
  • Judging C201 is the verification state the first verification state? If yes, execute step S202; if no, execute step S204.
  • Step S202 extracting the frame preemption configuration parameter configured on the current port as the first frame preemption configuration parameter, and updating it to the DATA field in the fourth OAM frame.
  • Step S203 update the verification state in the fourth OAM frame to the second verification state, and execute step S208.
  • step S204 the detection result is initialized as a successful detection result, and the first frame preemption configuration parameters and the second frame preemption configuration parameters of the current port are extracted.
  • Judging C202 is the frame preemption capability represented by the second frame preemption configuration parameter greater than or equal to the frame preemption capability represented by the first frame preemption configuration parameter? If yes, execute judgment C203; if not, execute step S205.
  • Step S205 recording the configuration parameter of the second frame preemption as the cause of the verification failure, and updating the detection result as the detection failure result.
  • Judging C203 is the node required by the current port the target node? If yes, go to step S206; if not, go to decision C204.
  • Step S206 if the detection result is a successful detection result, send a frame preemption capability verification success result to the source node; if the detection result is a detection failure result, send a frame preemption capability verification failure result to the source node.
  • Judgment C204 is the current port configured in tracking mode? If yes, execute step S207; if not, execute step S208.
  • Step S207 if the detection result is a successful detection result, send the frame preemption capability verification success result to the source node; if the detection result is a detection failure result, send the frame preemption capability verification failure result to the source node; , updating the verification state to the first verification state.
  • Step S208 sending the fourth OAM frame to the next port.
  • step S209 the verification process ends.
  • a network node may include multiple ports, such as a receiving port and a sending port, and all of them can perform corresponding check operations based on the content in the OAM frame.
  • the network node receives the OAM frame from other nodes through the receiving port, and the receiving port performs corresponding verification processing according to the content of the OAM frame and sends it to the sending port; the sending port receives the OAM frame from the receiving port, and according to the OAM frame After the corresponding verification process is performed on the content, it is sent to other nodes.
  • the frame preemption configuration parameters of the ports of the same network node may be the same, that is, the frame preemption configuration parameters of the sending port and the frame preemption configuration parameters of the receiving port may be the same.
  • FIG. 13 is a schematic diagram of an interactive process of monitoring OAM frames on a TSN network provided by an embodiment of the present application.
  • the source node sends an OAM frame to the target node, and the nodes along the road and the target node can return the verification result of the OAM frame to the source node according to the verification data in the OAM frame.
  • the way to return the verification result can be to report the verification result to the control plane, or construct an OAM verification report message as the verification result and send it to the source node, or send the verification result to the TSN network according to the content of the OAM frame a specific node.
  • corresponding address parameters in the OAM frame can be modified.
  • the destination address in the OAM frame is configured as the address of the target node.
  • the frame preemption capability verification can be performed at network nodes along the road, and the destination address in the OAM frame is configured as a special destination address, such as a multicast address, for Identification and processing of OAM frames by network nodes.
  • FIG. 14 is a schematic diagram of an OAM frame encapsulation format as a verification result provided by an embodiment of the present application.
  • the opcode is stored in the OpCode field in the OAM frame, and different opcodes are represented by changing the value of OpCode to represent different types of the OAM frame, while the data stored in the DATA field is used to represent this correction.
  • the verification is successful or indicates that the verification has failed and the reason for the failure.
  • the opcode can be marked as the fourth opcode, indicating that the frame is the result of message redundancy verification, and the DATA field in the OAM can store the verification result result, sequence number seqNo and verification failure reason failReason.
  • the opcode when the value of OpCode in the OAM frame is 0x0C, the opcode can be marked as the fifth opcode, indicating that the frame is the periodic verification result of the message, and the DATA field in the OAM can store the verification result result, packet cycle value cycleValue, deviation packet sequence number failPacketNo and verification failure reason failReason.
  • the opcode when the value of OpCode in the OAM frame is 0x0D, the opcode can be marked as the sixth opcode, indicating that the frame is the frame preemption capability check result, and the DATA field in the OAM can store the check result result, Verification failure node failNode, verification failure port failPort, verification failure reason failReason.
  • FIG. 15 is a schematic diagram of an application scenario of a method for monitoring a TSN network provided by an embodiment of the present application.
  • the TSN network monitoring method can be applied to a vehicle bus network, such as a FlexRay vehicle bus network.
  • vehicle bus network such as a FlexRay vehicle bus network.
  • the electronic control units of various terminal equipment such as brakes and transmissions need to support the sending and analysis of FlexRay frames.
  • a gateway needs to be arranged between the FlexRay terminal and the TSN network.
  • the FlexRay terminal uses the TSN network as a virtual FlexRay bus, and the FlexRay packets can be carried in the overlay mode in the TSN network.
  • the FlexRay terminal periodically sends deterministic service packets, the periodicity of the FlexRay packets should be maintained during bearer transmission over the TSN network.
  • the TSN network OAM monitoring function between the corresponding gateways, and send and monitor the periodic transmission capability of the TSN network by sending and monitoring the second OAM frame for periodic verification Perform real-time monitoring.
  • the address of the source node and the address of the destination node are the addresses of the gateways on both sides.
  • the message period value can be the same as the deterministic message period value of FlexRay, and the period fluctuation value and deviation report Text ratio can be set according to FlexRay bus standard requirements. Therefore, the periodicity of the vehicle network can be monitored through the TSN network monitoring method, which can ensure the periodicity of the FlexRay message carried in the TSN network. If there is a problem, the gateway will return the verification report message to the central control unit in time. The control unit can make corresponding operations according to the verification report information, such as reminding the driver of the car network failure through the display, to meet the needs of users and improve the reliability of TSN.
  • FIG. 16 shows a network monitoring device 1600 provided by an embodiment of the present application.
  • the network monitoring device 1600 includes but not limited to a memory 1610 and a processor 1620 .
  • the memory 1610 is used for storing programs.
  • the processor 1620 is configured to execute the program stored in the memory 1610.
  • the processor 1620 executes the computer program stored in the memory 1610, the processor 1620 is configured to execute the above network monitoring method.
  • the processor 1620 and the memory 1610 may be connected through a bus or in other ways.
  • the memory 1610 as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs, such as the network monitoring method described in any embodiment of the present application.
  • the processor 1620 executes the non-transitory software programs and instructions stored in the memory 1610 to implement the above-mentioned network monitoring method.
  • the memory 1610 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store and execute the above-mentioned network monitoring method.
  • the memory 1610 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices.
  • the memory 1610 may optionally include remote memories located remotely from the processor 1620, and these remote memories may be connected to the processor 1620 via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the non-transitory software programs and instructions required to implement the above network monitoring method are stored in the memory 1610, and when executed by one or more processors 1620, the network monitoring method provided by any embodiment of the present application is executed.
  • the embodiment of the present application also provides a storage medium storing computer-executable instructions, and the computer-executable instructions are used to execute the above-mentioned network monitoring method.
  • the storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more control processors, for example, executed by a processor in the above-mentioned network device, so that the above-mentioned one or more A processor executes the network monitoring method provided in any embodiment of the present application.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embody computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .
  • the embodiment of the present application includes: receiving an OAM frame from a source node, wherein the OAM frame includes an operation code and verification data corresponding to the operation code, and the OAM frame is used to verify the service performance of the TSN network; According to the operation code and the verification data, the performance of the deterministic network is verified to obtain the verification result; the verification result is sent to the source node.
  • the OAM frame includes an operation code and verification data, where different operation codes correspond to different verification data, and the verification data may include configuration parameters of the TSN network.
  • the target node can use the operation code and verification data in OAM to verify the performance of the deterministic network, obtain the verification result, and return the verification result to the source node.
  • the OAM frame can have different operation codes and different check data, and the operation code corresponds to the check data, so that the target node can use the deterministic network according to the difference between the operation code and the check data. It can verify the different performances of TSN network, improve the diversity of TSN network monitoring functions, monitor the service performance of TSN network, facilitate users to understand the service situation of TSN network, and improve the reliability of TSN.

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Abstract

一种网络监测方法、装置及计算机存储介质，该方法包括：接收来自于源节点的OAM帧，其中，OAM帧包括操作码以及与操作码对应的校验数据，OAM帧用于对TSN网络的业务性能进行校验(S100)；根据操作码以及校验数据，对确定性网络的性能进行校验处理得到校验结果(S200)；将校验结果发送至源节点(S300)。

Description

网络监测方法、装置及计算机存储介质
相关申请的交叉引用
本申请基于申请号为202111166256.6、申请日为2021年9月30日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及通信技术领域，尤其涉及一种网络监测方法、装置及计算机存储介质。
背景技术
时间敏感网络(Time-Sensitive Networking，TSN)是目前国际产业界正在积极推动的全新工业通信技术。TSN允许周期性与非周期性数据在同一网络中传输，使得标准以太网具有确定性传输的优势，并通过厂商独立的标准化进程，已成为广泛聚焦的关键技术，TSN广泛应用于车载以太网络、工业以太网络和运营商网络等。随着TSN在各种严苛业务场景中的广泛研究和部署应用，对其安全性和可靠性提出了要求。但在相关技术中，缺乏针对TSN网络业务监测，难以得知TSN网络的业务情况，无法保障TSN在各个业务场景中的可靠性和安全性。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供了一种网络监测方法、装置及计算机存储介质。
第一方面，本申请实施例提供了一种网络监测方法，应用于目标节点，所述目标节点设置于TSN网络，该方法包括：接收来自于源节点的OAM帧，其中，所述OAM帧包括操作码以及与所述操作码对应的校验数据，所述OAM帧用于对所述TSN网络的业务性能进行校验；根据所述操作码以及所述校验数据，对确定性网络的性能进行校验处理得到校验结果；将所述校验结果发送至所述源节点。
第二方面，本申请实施例提供一种网络监测方法，应用于源节点，所述源节点设置于TSN网络，该方法包括：向目标节点发送OAM帧，所述OAM帧包括操作码以及与所述操作码对应的校验数据，所述OAM帧用于对所述TSN网络的业务性能进行校验，以使所述目标节点根据所述操作码以及所述校验数据对确定性网络的性能进行校验处理得到校验结果并向所述源节点发送校验结果；接收来自于所述目标节点的所述校验结果。
第三方面，本申请实施例提供一种网络监测装置，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现本申请实施例提供的网络监测方法。
第四方面，本申请实施例提供一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时，实现本申请实施例提供的网络监测方法。
本申请的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请而了解。本申请的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
附图用来提供对本申请技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本申请的技术方案，并不构成对本申请技术方案的限制。
图1是本申请实施例提供的应用于目标节点的网络监测方法的流程图；
图2是图1中步骤S200的具体实现过程示意图；
图3是图1中步骤S200的具体实现过程示意图；
图4是图1中步骤S200的具体实现过程示意图；
图5是本申请实施例提供的应用于源节点的网络监测方法的流程图；
图6是图5中步骤S400的具体实现过程示意图；
图7是图5中步骤S400的具体实现过程示意图；
图8是图5中步骤S400的具体实现过程示意图；
图9是图5中步骤S400的具体实现过程示意图；
图10是本申请实施例提供的用于校验确定性网络的性能的OAM帧封装格式的示意图；
图11是本申请实施例提供的报文冗余度监测校验的流程图；
图12是本申请实施例提供的帧抢占能力监测校验的流程图；
图13是本申请实施例提供的TSN网络监测OAM帧的交互过程的示意图；
图14是本申请实施例提供的作为校验结果的OAM帧封装格式的示意图；
图15是本申请实施例提供的网监测方法的应用场景示意图；
图16是本申请实施例提供的一种网络监测装置的结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
需要说明的是，虽然在模块示意图中进行了功能模块划分，在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于模块中的模块划分，或流程图中的顺序执行所示出或描述的步骤。说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本申请提供了一种网络监测方法，目标节点在接收到来自于源节点的OAM帧的情况下，能够提取OAM帧中的操作码和校验数据，并且利用操作码和校验数据对确定性网络的性能进行校验处理，得到并向源节点发送校验结果。通过对OAM帧进行扩展，不同的OAM帧可以具有不同的操作码，而校验数据与操作码相对应，因此，不同OAM帧的校验数据可以不相同，从而，目标节点能够根据OAM中不同的操作码和校验数据，对确定性网络不同的性能进行校验，实现TSN网络业务性能监测的多样化，能够全面监测TSN网络的业务况，便于用户对TSN进行管理，提高TSN的可靠性。
参见图1，图1示出了本申请实施例提供的网络监测方法的流程图，该网络监测方法可以应用于目标节点，该网络检测方法包括但不限于有以下步骤S100至步骤S300。
步骤S100，接收来自于源节点的OAM帧，其中，OAM帧包括操作码以及与操作码对应的校验数据，OAM帧用于对TSN网络的业务性能进行校验。
可以理解的是，来自于源节点的OAM帧中包括有操作码和校验数据，其中，操作码位于OAM帧中的OpCode字段，可以用于表示该OAM帧的类型，通过对操作码进行扩展，对OAM帧的类型进行定义，例如，在操作码为第一操作码的情况下，可以表示为该OAM帧用于进行报文冗余度监测。而若需要进行报文冗余度监测，则需要OAM帧中携带有相应的报文冗余度校验数据，因此，操作码与校验数据相对应，不同的操作码所对应的校验数据可以不相同，校验数据位于OAM帧中的DATA字段，而DATA字段中可以包含有与操作码相对应的校验数据，也可以包含有确定性网络的性能监测所需的所有检验数据，从而目标节点能够利用OAM帧所携带的数据对TSN网络的业务性能进行相应的校验处理。
需要说明的是，源节点与目标节点均设置与TSN网络中，源节点可以为充当信源发送OAM帧的网络节点，即传输链路中目标节点的上一个传输节点，也可以是传输链路中的起始节点，而目标节点可以是充当信宿接受OAM帧的网络节点，即传输链路中源节点发送OAM帧的下一个接收节点，也可以是传输链路中的终止节点。例如，传输链路为第一节点向第二节点发送OAM帧，而第二节点向第三节点发送该OAM帧，其中，在第一节点与第二节点两者之间，第一节点为源节点，第二节点为目标节点；而在第二节点与第三节点两者之间，第二节点为源节点，第三节点为目标节点；另外，在第一节点、第二节点与第三节点三者之 间，第一节点为源节点，第三节点为目标节点。
步骤S200，根据操作码以及校验数据，对确定性网络的性能进行校验处理得到校验结果。
步骤S300，将校验结果发送至源节点。
可以理解的是，目标节点可以利用所接收到的OAM帧对确定性网络的性能进行校验处理，而操作码不同，OAM中所携带的校验数据不同，因此，目标节点可以根据OAM中的操作码识别出该OAM帧所属类型，从而利用该OAM中的校验数据进行相应的确定性网络性能校验监测，得到校验结果，并且目标节点会将该校验结果发送返回至源节点。例如，OAM帧中所携带的操作码为第一操作码，第一操作码表示为该OAM帧用于进行报文冗余度监测，而OAM帧中携带有第一操作码对应的第一校验数据，第一校验数据可以包括报文序列号、冗余报文个数和报文接收时间等用于进行报文冗余度监测相关数据，因此，目标节点在接收到携带有第一操作码的OAM帧则可以利用OAM帧中的第一校验数据进行报文冗余度监测，并且目标节点还可以将校验处理得到的校验结果发送至源节点，便于用户了解TSN网络的业务性能，对TSN进行相应的调整和管理，提高TSN网络的可靠性。通过对OAM帧扩展，丰富了OAM帧所携带的信息，使得目标节点能够根据扩展后的OAM帧对TSN不同的业务性能进行监测，提高了TSN监测功能的多样化。需要说明的是，目标节点可以利用OAM中的操作码和校验数据进行监测的确定性网络的性能包括报文冗余度、报文周期性和帧抢占能力，例如，在OAM帧中的操作码为第一操作码，校验数据包括报文序列号、冗余报文个数、报文发送时间和报文接收时间的情况下，目标节点可以利用该OAM帧中的操作码和校验数据对TSN的报文冗余度进行监测，得到报文冗余度校验结果；而在OAM帧中的操作码为第二操作码，校验数据包括报文发送时间、报文发送周期值、报文周期波动范围以及偏离报文比率的情况下，目标节点可以利用该OAM中的操作码和校验数据对TSN的报文周期性进行监测，得到报文周期性校验结果；另外，在OAM帧中的操作码为第三操作码，校验数据包括源节点的帧抢占配置参数和帧抢占参数校验状态的情况下，目标节点可以利用该OAM帧中的操作码和校验数据对TSN的帧抢占能力进行检测，得到帧抢占能力校验结果。OAM中的操作码和校验数据还可以根据实际情况进行扩展，使得目标节点可以对TSN的业务性能进行相应的监测校验，丰富TSN网络的监测功能，提高TSN网络的可靠性。
参见图2，图1所示实施例中的步骤S200还包括但不限于有以下步骤S210至步骤S220。
步骤S210，根据计时时长得到已接收报文数量，已接收报文的序列号相同，计时时长根据第一接收时间、发送时间和最大时延值得到。
步骤S220，根据已接收报文数量、冗余报文数量和时间比较结果得到报文冗余度校验结果，其中，时间比较结果由第一接收时间和发送时间的差值，与最大时延值和最小时延值的差值进行比较得到。
可以理解的是，在OAM帧所携带的操作码为第一操作码的情况下，该OAM帧中的校验数据包括序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值。当目标节点接收到携带有第一操作码的OAM帧，目标节点可以从该OAM帧中提取出序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值。目标节点根据第一接收时间、发送时间和最大时延值得到报文冗余度监测的计时时长，并在计时时长内实时统计目标节点已接收到相同序列号的报文数量，得到已接收报文数量。
当在计时时长内实时统计的已接收报文数量大于冗余报文数量，可以认为报文冗余度校验失败，目标节点向源节点发送报文冗余度校验失败结果。当在计时时长内实时统计的已接收报文数量小于冗余报文数量，可以认为报文冗余度校验未完成，继续接收报文，根据报文序列号实时更新已接收报文数量。另外，为了监测TSN在冗余传输的可靠性，在目标节点接收到OAM帧且已接收报文数量未超过冗余报文数量的情况下，目标节点会根据该OAM帧的第一接收时间和发送时间的差值，与最大时延值和最小时延值的差值进行比较，得到时间比较结果。当第一接收时间和发送时间的差值大于最大时延值和最小时延值的差值，则可以认为不满足冗余传输的时延要求，时间比较结果为比较失败结果。当时间比较结果为比较失 败结果，可以认为当前TSN的报文冗余度性能不能够满足业务需求，报文冗余度校验失败，目标节点向源节点发送报文冗余度校验失败结果。当第一接收时间和发送时间的差值小于或等于最大时延值和最小时延值的差值，则可以认为满足冗余传输的时延要求，时间比较结果为比较成功结果。在已接收报文数量等于冗余报文数量且时间比较结果为比较成功结果的情况下，可以认为当前TSN的报文冗余度性能能够满足业务需求，报文冗余度校验成功，得到报文冗余度校验成功结果。
参见图3，图1所示实施例中的步骤S200还包括但不限于有以下步骤S230至步骤S240。
步骤S230，根据偏离报文比率和预设数量阈值得到偏离报文数量。
步骤S240，根据已接收的多个OAM帧对应的第一校验结果与偏离报文数量得到报文周期性校验结果。
可以理解的是，在OAM帧携带的操作码为第二操作码的情况下，该OAM帧中与第二操作码对应的校验数据包括第二接收时间、报文周期值、周期波动值和偏离报文比率。当目标节点接收到携带有第二操作码的OAM帧，目标节点可以从该OAM中提取出第二接收时间、报文周期值、周期波动值和偏离报文比率，从而目标节点可以根据报文周期值和周期波动值得到报文周期条件，即报文周期值与周期波动值的差值作为报文周期条件的下限值，报文周期值与周期波动值的和值作为报文周期条件的上限值。另外，目标节点可以根据偏离报文比率和预设数量阈值计算得出偏离报文数量，目标节点能够记录所接收到的所有OAM帧的接收时间，并且取上一个OAM帧的接收时间为第三接收时间，通过判断第二接收时间与第三接收时间的差值是否满足报文周期条件，即判断第二接收时间与第三接收时间的差值是否位于报文周期条件的上限值和下限值之间，得到相应的第一校验结果。例如，偏离报文比率为10％，预设数量阈值为10个，则偏离报文数量为1个，可以认为，报文周期性监测需要监测连续10个OAM帧的周期性，而允许1个OAM帧出现错误，即报文周期性监测中的10个OAM帧中允许其中两个相邻OAM帧的接收时间差值不满足报文周期条件。当第二接收时间与第三接收时间的差值满足报文周期条件，则可以认为当前OAM帧的报文周期性校验成功，第一校验结果为第一校验成功结果。当第二接收时间与第三接收时间的差值不满足报文周期条件，则可以认为当前OAM帧不满足报文周期性，当前OAM帧属于偏离报文，第一校验结果为第一校验失败结果。目标节点能够实时比较已接收的多个OAM帧所对应的第一校验结果和偏离报文数量，即实时比较当前已偏离的报文个数和偏离报文数量，当第一校验失败结果个数大于偏离报文数量，则可以认为当前TSN的报文周期性校验失败，得到报文周期性校验失败结果。当第一校验失败结果个数小于或等于偏离报文数量，且第一校验结果个数等于预设数量阈值，可以认为当前TSN的报文周期性校验成功，得到报文周期性校验成功结果。因此，通过扩展OAM帧的操作码和校验数据，使得能够实现对TSN的报文周期性校验，并得到TSN的业务性能情况，便于用户调整TSN网络，提高TSN的可靠性。
参见图4，图1所示实施例中的步骤S200还包括但不限于有以下步骤S250至步骤S260。
步骤S250，获取第二帧抢占配置参数，第二帧抢占配置参数用于表征当前节点的帧抢占能力信息。
步骤S260，根据第一帧抢占配置参数与第二帧抢占配置参数，得到帧抢占校验结果。
可以理解的是，当操作码为第三操作码，对应的校验数据包括第一帧抢占配置参数，而第一帧抢占配置参数用于表征源节点的帧抢占能力信息，即表示当OAM帧携带有第三操作码和第一帧抢占配置参数，该OAM帧用于进行TSN的帧抢占能力校验。因此，当目标节点接收到携带有第三操作码的OAM帧，则目标节点从该OAM帧中的校验数据中提取出第一帧抢占配置参数，并获取当前节点的帧抢占能力信息，即获取第二帧抢占配置参数。目标节点通过对第一帧抢占配置参数和第二帧抢占配置参数分析处理，判断目标节点的帧抢占能力是否大于或等于源节点的帧抢占能力。当判断得出目标节点的帧抢占能力大于或等于源节点的帧抢占能力，则认为当前TSN的帧抢占能力校验成功，得到帧抢占校验成功结果。当判断得出目标节点的帧抢占能力小于源节点的帧抢占能力，则认为当前TSN的帧抢占能力校验失 败，得到帧抢占校验失败结果。其中，帧抢占校验失败结果包括有帧抢占校验失败原因，例如，帧抢占配置参数中包括有多个配置信息，由于第二帧抢占配置参数中的第一配置信息小于第一帧抢占配置参数中的第二配置信息，而判断得出目标节点的帧抢占能力小于源节点的帧抢占能力，则可以认为第二帧抢占配置参数中的第一配置信息为帧抢占校验失败原因，将第一配置信息记录至帧抢占校验失败结果中。因此，帧抢占校验失败原因中可以包括有第二帧抢占信息。通过向目标节点发送携带有指定操作码的OAM帧，并携带有相应的校验数据，使得目标节点能够根据OAM帧进行确定性网络的性能校验处理，满足用户使用需求。另外，通过记录校验失败原因，并向源节点发送校验结果和校验失败原因，能够有助于用户对TSN进行调整和管理，提高TSN的可靠性。
参见图5，图5示出了本申请实施例提供的网络监测方法的流程图，该网络监测方法可以应用于源节点，该网络检测方法包括但不限于有以下步骤S400至步骤S500。
步骤S400，向目标节点发送OAM帧，OAM帧包括操作码以及与操作码对应的校验数据，OAM帧用于对TSN网络的业务性能进行校验，以使目标节点根据操作码以及校验数据对确定性网络的性能进行校验处理得到并向源节点发送校验结果。
步骤S500，接收来自于目标节点的校验结果。
可以理解的是，源节点与目标节点均设置在TSN网络中，而源节点向目标节点发送的OAM帧中包括有操作码和校验数据，操作码用于表示该OAM帧的类型，因此，目标节点能够利用OAM帧中的操作码对确定性网络的相应性能进行校验监测，例如，源节点向目标节点发送携带有第一操作码的OAM帧，使得目标节点能够根据第一操作码对TSN的报文冗余度进行校验处理。因此，通过对操作码进行扩展，对OAM帧的类型进行定义，并携带有与操作码相对应的校验数据，使得目标节点在接收到OAM帧的情况下，能够根据不同的操作码和校验数据对确定性网络的不同性能进行校验处理，丰富TSN业务要求的监测功能。在目标节点完成相应性能的监测处理后，源节点可以接受到来自于目标节点针对该性能监测的校验结果。通过获取校验结果能够得知当前TSN的业务性能，便于用户及时调整TSN，提高TSN的可靠性。
参见图6，图5所示实施例中的步骤S400还包括但不限于有以下步骤S410。
步骤S410，向目标节点发送第一OAM帧，第一OAM帧包括第一操作码和第一校验数据，第一校验数据包括序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值，以使目标节点根据第一OAM帧得到报文冗余度校验结果。
可以理解的是，不同类型的OAM帧携带有不同的操作码，即用于校验确定性网络不同性能的OAM帧不同。第一OAM帧可用于校验TSN的报文冗余度性能，其中，第一OAM帧所携带的操作码为第一操作码，且携带有与第一操作码相对应的第一校验数据。第一校验数据包括序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值。源节点通过将第一OAM帧发送至目标节点，使得目标节点在接收到第一OAM帧后能够提取出序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值，并根据第一接收时间、发送时间和最大时延值得到计时时长，从而通过实时统计在计时时长内所接收得到相同序列号的报文数量，得到已接收报文数量。因此，目标节点能够通过已接收报文数量和第一OAM帧中提取得到的冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值判断报文冗余度校验是否成功，得到相应的报文冗余度校验结果。例如，在校验过程中，实时统计的已接收报文数量大于冗余报文数量，则可以认为报文冗余度校验失败，源节点能够得到由目标节点发送的报文冗余度校验失败结果，同时中止报文冗余度校验，停止向目标节点发送第一OAM帧。又如，在校验过程中实时统计的已接收报文数量未超过冗余报文数量的情况下，即源节点未接收到来自于目标节点的报文冗余度校验结果，可以认为报文冗余度校验未完成，则源节点继续向目标节点发送第一OAM帧，直至接收到来自于目标节点的报文冗余度校验结果。因此，通过扩展OAM帧的操作码类型，并且在OAM帧中扩展不同类型操作码所对应的校验数据，使得目标节点在接收OAM帧后能够根据OAM中所 携带的数据进行报文冗余度校验，实现对确定性网络的性能进行校验处理，提高了TSN的可靠性。
参见图7，图5所示实施例中的步骤S400还包括但不限于有以下步骤S420。
步骤S420，向目标节点发送第二OAM帧，第二OAM帧包括第二操作码和第二校验数据，第二校验数据包括第二接收时间、报文周期值、周期波动值和偏离报文比率，以使目标节点根据第二OAM帧和预设数量阈值得到报文周期性校验结果。
可以理解的是，第二OAM帧中所携带的操作码为第二操作码，且与第二操作码相对应的第二校验数据中包括有第二接收时间、报文周期值、周期波动值和偏离报文比率，从而源节点向目标节点发送第二OAM帧，能够使得目标节点提取得到第二接收时间、报文周期值、周期波动值和偏离报文比率，并根据预设数量阈值、偏离报文比率、当前第二OAM帧的第二接收时间、上一个第二OAM帧的接收时间、报文周期值和周期波动值进行报文周期性校验，得到报文周期性校验结果。例如，目标节点可以根据报文周期值和周期波动值得到报文周期条件，并根据预设数量阈值和偏离报文比率计算得到偏离报文数量，通过比较第二接收时间与上一个OAM帧的接收时间的差值和报文周期条件得到第一校验结果，从而目标节点能够在第一校验结果数量满足预设数量阈值且满足偏离报文比率的情况下，得到报文周期性校验成功结果。因此，通过扩展OAM帧的操作码和校验数据，使得能够实现对TSN的报文周期性校验，得到TSN的业务性能情况，提高TSN的可靠性。
参见图8，图5所示实施例中的步骤S400还包括但不限于有以下步骤S430至步骤S450。
步骤S430，获取第一帧抢占配置参数，第一帧抢占配置参数用于表征源节点的帧抢占能力信息。
步骤S440，根据第一帧抢占配置参数更新校验数据。
步骤S450，向目标节点发送第三OAM帧，第三OAM帧包括第三操作码和第三校验数据，第三校验数据包括第一帧抢占配置参数，以使目标节点根据第三OAM帧与第二帧抢占配置参数得到帧抢占校验结果，其中，第二帧抢占配置参数用于表征当前节点的帧抢占能力信息。
可以理解的是，在源节点发送携带有第三操作码的第三OAM帧前，源节点获取第一帧抢占配置参数即当前源节点的帧抢占能力信息。利用第一帧抢占配置参数对第三OAM帧中的校验数据进行更新，例如，若校验数据中未携带有帧抢占配置信息，则将第一帧抢占配置参数存储于校验数据中；若校验数据中已携带有帧抢占配置信息，则将第一帧抢占配置参数替换校验数据中已有的帧抢占配置参数，从而得到第三校验数据，即第三校验数据中包含有第一帧抢占配置参数。因此，源节点向目标节点发送携带有第三操作码和第三校验数据的第三OAM帧，使得目标节点能够根据当前节点的第二帧抢占配置参数和第三OAM帧进行TSN的帧抢占能力校验处理，得到帧抢占校验结果。例如，目标节点通过比较第二帧抢占配置参数和第三OAM帧中的第一帧抢占配置参数，若第二帧抢占配置参数所体现的帧抢占能力大于或等于第一帧抢占配置参数所体现的帧抢占能力，则认为TSN的帧抢占能力校验成功，得到帧抢占校验成功结果。通过向目标节点发送携带有第三操作码的OAM帧，并携带有第一帧抢占配置参数的检验数据，使得目标节点能够根据第三OAM帧进行TSN的帧抢占能力校验处理，满足用户使用需求。
参见图9，图5所示实施例中的步骤S400还包括但不限于有以下步骤S460至步骤S490。
步骤S460，获取校验状态，校验状态用于表征当前节点的状态信息。
步骤S470，在校验状态为第一校验状态的情况下，获取第一帧抢占配置参数，第一帧抢占配置参数用于表征源节点的帧抢占能力信息。
步骤S480，根据第一帧抢占配置参数更新校验数据，并将校验状态更新为第二校验状态。
步骤S490，向目标节点发送第四OAM帧，第四OAM帧包括第三操作码和第四校验数据，第四校验数据包括第一帧抢占配置参数和校验状态，以使目标节点在校验状态为第二校验状态的情况下，目标节点根据第四OAM帧与第二帧抢占配置参数得到帧抢占校验结果， 其中，第二帧抢占配置参数用于表征当前节点的帧抢占能力信息，并以使目标节点将校验状态更新为第一校验状态。
可以理解的是，在操作码为第三操作码的情况下，校验数据可以为与第三操作码相对应的第四校验数据，第四校验数据中包括有第一帧抢占配置参数和校验状态，从而源节点可以向目标节点发送携带有第三操作码的第四OAM帧，使得目标节点根据第四OAM帧进行帧抢占能力校验处理。其中，源节点获取当前节点的状态信息，即校验状态。在校验状态为第一校验状态的情况下，认为当前节点为发送状态，则获取当前节点的帧抢占能力信息，即第一帧抢占配置参数，并且利用第一帧抢占配置参数更新校验数据。源节点还将校验状态更新为第二校验状态，即表示当前节点为接收状态，使得接收到该OAM帧的节点处于接收状态，进行帧抢占能力校验，并且将第二校验状态更新校验数据。若校验数据中未携带有帧抢占配置信息，则将第一帧抢占配置参数存储于校验数据中；若校验数据中已携带有帧抢占配置信息，则将第一帧抢占配置参数替换校验数据中已有的帧抢占配置参数，从而得到第四校验数据，即第四校验数据中包含有第一帧抢占配置参数和校验状态。当目标节点接收到来自于源节点的第四OAM帧，目标节点根据第四OAM帧中所携带的第三操作码和第二校验状态进行帧抢占能力校验，获取第二帧抢占配置参数，通过比较第二帧抢占配置参数和第一帧抢占配置参数得到帧抢占校验结果。若当前节点可以为充当信源发送第四OAM帧的网络节点，则将第二校验状态更新为第一校验状态，从而，当前节点在校验状态为第一校验状态的情况下，利用当前节点的帧抢占配置参数更新第四OAM帧中的第一帧抢占配置参数，并且，将第一校验状态更新为第二校验状态，得到更新后的第四OAM帧。因此，当前节点将更新后的第四OAM帧发送至下一个网络节点，以使后续节点完成帧抢占能力的校验处理。通过扩展操作码对应的校验数据，使得传输链路中的节点根据校验状态完成相应的帧抢占能力校验处理，满足用户的使用需求，提高TSN的可靠性。
参见图10，图10是本申请实施例提供的用于校验确定性网络的性能的OAM帧封装格式的示意图。
可以理解的是，操作码存储于OAM帧中的OpCode字段中，通过更改OpCode的取值表示不同的操作码以表示OAM帧的不同类型，而存储于DATA字段中的校验数据与操作码相对应，因此从而节点可以根据OpCode的取值即操作码，确定当前节点需要进行的性能校验处理，并且利用DATA字段中的校验数据进行校验处理。例如，当OAM帧中的OpCode取值为0x08，可以将操作码标记为第一操作码，表示该帧用于进行报文冗余度校验监测，则该OAM中的DATA字段可以存储有序列号seqNo，冗余报文数量redundNo，最大时延值maxDelay，最小时延值minDelay，报文发送时间txTimestamp和报文接收时间rxTimestamp。又如，当OAM帧中的OpCode取值为0x09，可以将操作码标记为第二操作码，表示该OAM帧用于进行报文周期性校验监测，则该OAM帧中的DATA字段可以存储有报文周期值cycleValue，周期波动值cycleJitter，偏离报文比率failPacketRate和报文接收时间rxTimestamp。另外，当OAM帧中的OpCode取值为0x0A，可以将操作码标记为第三操作码，表示该OAM帧用于进行帧抢占能力校验监测，则该OAM帧中的DATA字段可以存储有帧抢占配置参数，包括帧抢占支持状态isBrCap，帧抢占启用状态isBrEnabled，帧抢占校验状态isBrChecked，帧抢占参变量addFragSize和多级帧抢占级别brMultiLevel。
需要说明的是，携带有第一操作码的OAM帧中的序列号可以采用TSN冗余协议802.1CB中定义的R-TAG携带。
需要说明的是，在构造OAM帧的过程中，校验数据可以通过用户设置得到，也可以是控制系统配置。而当接收到OAM帧，接收OAM帧的节点会识别OAM帧以及OAM帧的类型，若该节点中与操作码对应的校验功能配置为启用，则提取OAM帧中DATA字段的校验数据进行校验。
参见图11，图11是本申请实施例所提供的报文冗余度监测校验的流程图，该流程具体为步骤S101至步骤S105。
步骤S101，接收到第一OAM帧，提取序列号、发送时间、接收时间、最大时延值、最小时延值和冗余报文数量。
判断C101，是否首次接收到携带有该序列号的第一OAM帧？若是，执行步骤S102；若否，执行判断C102。
步骤S102，初始化已接收报文数量，启动计时器。
判断C102，计时器是否归零，或已接收报文数量是否大于等于冗余报文数量？若是，执行步骤S103；若否，执行判断C103。
判断C103，接收时间与发送时间的差值是否在最小时延值与最大时延值之间？若是，执行判断C104；若否，执行步骤S103。
步骤S103，向源节点发送报文冗余度校验失败结果，执行步骤S105。
判断C104，已接收报文数量增加一个，已接收报文数量是否等于冗余报文数量？若是，执行步骤S104；若否，执行步骤S105。
步骤S104，在计时器归零的情况下，向源节点发送报文冗余度校验成功结果。
步骤S105，本次校验流程结束。
可以理解的是，计时器的计时时长由发送时间、接收时间和最大时延值计算得出，计时时长可以为在接收时间与发送时间的差值的基础上增加最大时延值所得出的数值。当已接收报文数量等于冗余报文数量，且在计时器剩余的倒计时内无接收到相同序列号的第一OAM帧，则可以认为报文冗余度校验成功，向源节点发送报文冗余度校验成功结果。在已接收报文数量等于冗余报文数量，且仍在计时器剩余的倒计时内的情况下，接收到携带有相同序列号的第一OAM帧，则认为报文冗余度校验失败，向源节点发送报文冗余度校验失败结果。
在一示例中，目标节点在首次接收时间为123457000收到一个第一OAM帧，该第一OAM帧所携带的系列号为123，在二次接收时间为123457100收到了第二个携带序列号为123的第一OAM帧。
在图11所示的报文冗余度校验流程的基础上，目标节点首次接收到第一OAM帧进行报文冗余度校验的流程具体为(1)至(7)。
(1)接收得到一个第一OAM帧，提取校验数据，得序列号为123，首次接收时间为12345600，发送时间为123456666，最大时延值为800，最小时延值为300，冗余报文数量为2。
(2)首次接收到序列号为123的第一OAM帧。
(3)初始化已接收报文数量为0，启动计时器，从接收时间与发送时间的差值的基础上增加最大时延值所得出的数值开始倒计时，即123456666+800-123457000＝466。
(4)计时器未归0且已接收报文数量小于冗余报文数量。
(5)发送时间与首次接收时间的差值为334，因此差值大于最小时延值，且差值小于最大时延值，将已接收报文数量增加1。
(6)已接收报文数量不等于冗余报文数量。
(7)本次校验流程结束。
而在图11所示的报文冗余度校验流程的基础上，目标节点非首次接收到相同序列号的第一OAM帧进行报文冗余度校验的流程具体为(1)至(6)。
(1)接收得到一个第一OAM帧，提取校验数据，得序列号为123，二次接收时间为123457100，发送时间为123456666，最大时延值为800，最小时延值为300，冗余报文数量为2。
(2)非首次接收到序列号为123的第一OAM帧。
(3)计时器未归0且已接收报文数量为1，即已接收报文数量小于冗余报文数量。
(4)发送时间与二次接收时间的差值为434，因此差值大于最小时延值，且差值小于最大时延值，将已接收报文数量增加1，此时已接收报文数量为2。
(5)已接收报文数量等于冗余报文数量，且计时器归零前未接收到第三个所携带序列号 为123的第一OAM帧，则向源节点发送报文冗余度校验成功结果。
(6)本次校验流程结束。
参见图12，图12是本申请实施例所提供的帧抢占能力监测校验的流程图，该流程具体为步骤S201至步骤S209。
步骤S201，接收到第四OAM帧，提取第四OAM帧中的校验状态。
判断C201，校验状态是否为第一校验状态？若是，执行步骤S202；若否，执行步骤S204。
步骤S202，提取当前端口配置的帧抢占配置参数作为第一帧抢占配置参数，更新至第四OAM帧中的DATA字段。
步骤S203，更新第四OAM帧中的校验状态为第二检验状态，执行步骤S208。
步骤S204，初始化检测结果为检测成功结果，提取第一帧抢占配置参数和当前端口的第二帧抢占配置参数。
判断C202，第二帧抢占配置参数表征的帧抢占能力是否大于或等于第一帧抢占配置参数表征的帧抢占能力？若是，执行判断C203；若否，执行步骤S205。
步骤S205，记录第二帧抢占配置参数作为校验失败原因，更新检测结果为检测失败结果。
判断C203，当前端口所需节点是否为目标节点？若是，执行步骤S206；若否，执行判断C204。
步骤S206，在检测结果为检测成功结果的情况下，向源节点发送帧抢占能力校验成功结果；在检测结果为检测失败结果的情况下，向源节点发送帧抢占能力校验失败结果。
判断C204，当前端口是否配置为跟踪模式？若是，执行步骤S207；若否，执行步骤S208。
步骤S207，在检测结果为检测成功结果的情况下，向源节点发送帧抢占能力校验成功结果；在检测结果为检测失败结果的情况下，向源节点发送帧抢占能力校验失败结果；另外，将校验状态更新为第一校验状态。
步骤S208，将第四OAM帧发送下一端口。
步骤S209，本次校验流程结束。
可以理解的是，在网络节点中可包括有多个端口，如接收端口和发送端口，并且均能够基于OAM帧中的内容进行相应的校验操作。网络节点通过接收端口接收得到来自于其他节点的OAM帧，接收端口根据OAM帧的内容进行相应的校验处理后发送至发送端口；发送端口接收得到来自于接收端口的OAM帧，并根据OAM帧的内容进行相应的校验处理后，发送至其他节点。其中，同一个网络节点的各个端口的帧抢占配置参数可以相同，即发送端口的帧抢占配置参数与接收端口的帧抢占配置参数可以相同。当端口配置为跟踪模式，需要向源节点发送帧抢占能力校验结果。当端口未配置为跟踪模式，不需要向源节点发送帧抢占校验结果。
参见图13，图13是本申请实施例提供的TSN网络监测OAM帧的交互过程的示意图。
可以理解的是，在TSN网络的业务性能校验过程中，源节点向目标节点发出OAM帧，沿路节点和目标节点可根据OAM帧中的校验数据向源节点返回OAM帧的校验结果，返回校验结果的方式可以为将校验结果上报至控制平面，或构造OAM校验报告报文作为校验结果发送至源节点，还可以根据OAM帧的内容将校验结果发送至TSN网络中某个特定节点。
需要说明的是，根据确定性网络所需要监测的性能，可以修改OAM帧中相应的地址参数。例如，在车载网络中的动力系统或制动系统中，需要对目标节点的报文冗余度或报文周期性进行监测校验，则在OAM帧中的目的地址配置为目标节点的地址。又如，当需要对TSN的帧抢占能力进行监测校验，可以在沿路网络节点进行帧抢占能力校验，而OAM帧中的目的地址配置为特殊的目的地址，如组播地址，用于沿路网络节点对OAM帧的识别和处理。
参见图14，图14是本申请实施例提供的作为校验结果的OAM帧封装格式的示意图。
可以理解的是，操作码存储于OAM帧中的OpCode字段中，通过更改OpCode的取值表示不同的操作码以表示OAM帧的不同类型，而存储于DATA字段中的数据用于表示本次校验成功或表示本次校验失败以及失败原因。例如，当OAM帧中的OpCode取值为0x0B，可 以将操作码标记为第四操作码，表示该帧为报文冗余度校验结果，则该OAM中的DATA字段可以存储有校验结果result，序列号seqNo以及校验失败原因failReason。又如，当OAM帧中的OpCode取值为0x0C，可以将操作码标记为第五操作码，表示该帧为报文周期性校验结果，则该OAM中的DATA字段可以存储有校验结果result，报文周期值cycleValue，偏离报文序号failPacketNo以及校验失败原因failReason。另外，当OAM帧中的OpCode取值为0x0D，可以将操作码标记为第六操作码，表示该帧为帧抢占能力校验结果，则该OAM中的DATA字段可以存储有校验结果result，校验失败节点failNode，校验失败端口failPort，校验失败原因failReason。
参见图15，图15是本申请实施例提供的TSN网监测方法的应用场景示意图。
可以理解的是，TSN网络监测方法可以应用于车载总线网络中，如FlexRay车载总线网络。采用FlexRay总线的汽车网络电子系统中，各种终端设备如制动器和变速器的电控单元需支持FlexRay帧的发送和解析。FlexRay总线向TSN网络演进中，如果不改变终端设备的能力，仅将总线替换为TSN网络，则需要FlexRay终端和TSN网络间安排网关。FlexRay终端将TSN网络当作虚拟的FlexRay总线进行使用，FlexRay报文在TSN网络中可以overlay方式进行承载。
若FlexRay终端周期性发出确定性业务报文，则FlexRay报文的周期性在通过TSN网络承载传输过程中应当得到保持。为监测承载FlexRay帧的TSN报文的周期性，需要在对应的网关之间启用TSN网络OAM监测功能，并通过发送和监测用于周期校验的第二OAM帧对TSN网络的周期性传输能力进行实时监测。
构造OAM帧过程中，源节点地址和目标节点地址为两侧网关地址，在第二OAM帧DATA字段中，报文周期值可以与FlexRay的确定性报文周期值相同，周期波动值和偏离报文比率可以根据FlexRay总线标准要求进行设置。因此，通过TSN网络监测方法能够对车载网络的周期性进行监测，可保证FlexRay报文在TSN网络中承载的周期性，若出现问题，网关会及时向中控单元返回校验报告报文，中控单元可根据校验报告信息做出相应操作，例如通过显示器提醒驾驶员汽车网络故障，满足用户的使用需求，提高TSN的可靠性。
参见图16，图16示出了本申请实施例提供的网络监测装置1600。该网络监测装置1600包括但不限于存储器1610、处理器1620。
存储器1610，用于存储程序。
处理器1620，用于执行存储器1610存储的程序，当处理器1620执行存储器1610存储的计算机程序时，处理器1620用于执行上述的网络监测方法。
处理器1620和存储器1610可以通过总线或者其他方式连接。
存储器1610作为一种非暂态计算机可读存储介质，可用于存储非暂态软件程序以及非暂态性计算机可执行程序，如本申请任意实施例描述的网络监测方法。处理器1620通过运行存储在存储器1610中的非暂态软件程序以及指令，从而实现上述的网络监测方法。
存储器1610可以包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需要的应用程序；存储数据区可存储执行上述的网络监测方法。此外，存储器1610可以包括高速随机存取存储器，还可以包括非暂态存储器，比如至少一个磁盘存储器件、闪存器件、或其他非暂态固态存储器件。在一些实施方式中，存储器1610可选包括相对于处理器1620远程设置的远程存储器，这些远程存储器可以通过网络连接至该处理器1620。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
实现上述的网络监测方法所需的非暂态软件程序以及指令存储在存储器1610中，当被一个或者多个处理器1620执行时，执行本申请任意实施例提供的网络监测方法。
本申请实施例还提供了一种存储介质，存储有计算机可执行指令，计算机可执行指令用于执行上述的网络监测方法。
在一实施例中，该存储介质存储有计算机可执行指令，该计算机可执行指令被一个或多个控制处理器执行，比如，被上述网络设备中的一个处理器执行，可使得上述一个或多个处 理器执行本申请任意实施例提供的网络监测方法。
以上所描述的实施例仅仅是示意性的，其中作为分离部件说明的单元可以是或者也可以不是物理上分开的，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统可以被实施为软件、固件、硬件及其适当的组合。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包括计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
本申请实施例包括：接收来自于源节点的OAM帧，其中，OAM帧包括操作码以及与操作码对应的校验数据，所述OAM帧用于对所述TSN网络的业务性能进行校验；根据操作码以及校验数据，对确定性网络的性能进行校验处理得到校验结果；将校验结果发送至源节点。根据本申请实施例提供的方案，OAM帧包括有操作码和校验数据，其中，不同的操作码对应有不同的校验数据，且校验数据可以包括TSN网络的配置参数。目标节点可以利用OAM中的操作码和校验数据对确定性网络的性能进行校验，得到校验结果，并将校验结果返回至源节点。通过对OAM帧进行扩展，使得OAM帧可以具有不同的操作码和不同的校验数据，而操作码与校验数据相对应，从而目标节点可以根据操作码和校验数据的不同对确定性网络的不同性能进行校验，提高TSN网络监测功能的多样性，能够对TSN网络的业务性能进行监测，便于用户了解TSN网络的业务情况，提高TSN的可靠性。
以上是对本申请的一些实施进行了具体说明，但本申请并不局限于上述实施方式，熟悉本领域的技术人员在不违背本申请精神的。共享条件下还可作出种种等同的变形或替换，这些等同的变形或替换均包括在本申请权利要求所限定的范围内。

Claims (12)

  1. 一种网络监测方法，应用于目标节点，所述目标节点设置于TSN网络，所述方法包括：
    接收来自于源节点的OAM帧，其中，所述OAM帧包括操作码以及与所述操作码对应的校验数据，所述OAM帧用于对所述TSN网络的业务性能进行校验；
    根据所述操作码以及所述校验数据，对确定性网络的性能进行校验处理得到校验结果；
    将所述校验结果发送至所述源节点。
  2. 根据权利要求1所述的网络监测方法，其中，所述确定性网络的性能包括至少如下之一：
    报文冗余度；
    报文周期性；
    帧抢占能力。
  3. 根据权利要求2所述的网络监测方法，其中，在所述操作码为第一操作码的情况下，所述校验数据包括：序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值；
    根据所述操作码以及所述校验数据，所述对确定性网络的性能进行校验处理得到校验结果，包括以下步骤：
    根据计时时长得到已接收报文数量，所述已接收报文的所述序列号相同，所述计时时长根据所述第一接收时间、所述发送时间和所述最大时延值得到；
    根据所述已接收报文数量、所述冗余报文数量和时间比较结果得到报文冗余度校验结果，其中，所述时间比较结果由所述第一接收时间和所述发送时间的差值，与所述最大时延值和所述最小时延值的差值进行比较得到。
  4. 根据权利要求2所述的网络监测方法，其中，在所述操作码为第二操作码的情况下，所述校验数据包括：第二接收时间、报文周期值、周期波动值和偏离报文比率；
    根据所述操作码以及所述校验数据，所述对确定性网络的性能进行校验处理得到校验结果，包括以下步骤：
    根据所述偏离报文比率和预设数量阈值得到偏离报文数量；
    根据已接收的多个所述OAM帧对应的第一校验结果与所述偏离报文数量得到报文周期性校验结果；
    其中，所述第一校验结果根据所述第二接收时间和第三接收时间的时间差值和报文周期条件得到，报文周期条件根据所述报文周期值和所述周期波动值得到，所述第三接收时间为上一个OAM帧的接收时间，所述已接收的多个所述OAM帧的数量小于或者等于所述预设数量阈值。
  5. 根据权利要求2所述的网络监测方法，其中，在所述操作码为第三操作码的情况下，所述校验数据包括第一帧抢占配置参数，所述第一帧抢占配置参数用于表征所述源节点的帧抢占能力信息；
    根据所述操作码以及所述校验数据，所述对确定性网络的性能进行校验处理得到校验结果，包括以下步骤：
    获取第二帧抢占配置参数，所述第二帧抢占配置参数用于表征当前节点的帧抢占能力信息；
    根据所述第一帧抢占配置参数与所述第二帧抢占配置参数，得到帧抢占校验结果。
  6. 一种网络监测方法，应用于源节点，所述源节点设置于TSN网络，所述方法包括：
    向目标节点发送OAM帧，所述OAM帧包括操作码以及与所述操作码对应的校验数据，所述OAM帧用于对所述TSN网络的业务性能进行校验，以使所述目标节点根据所述操作码以及所述校验数据对确定性网络的性能进行校验处理得到校验结果并向所述源节点发送校验结果；
    接收来自于所述目标节点的所述校验结果。
  7. 根据权利要求6所述的网络监测方法，其中，在所述操作码为第一操作码的情况下，所述校验数据为第一校验数据；
    所述向目标节点发送OAM帧，包括以下步骤：
    向目标节点发送第一OAM帧，所述第一OAM帧包括所述第一操作码和所述第一校验数据，所述第一校验数据包括序列号、冗余报文数量、第一接收时间、发送时间、最大时延值和最小时延值，以使所述目标节点根据所述第一OAM帧得到报文冗余度校验结果。
  8. 根据权利要求6所述的网络监测方法，其中，在所述操作码为第二操作码的情况下，所述校验数据为第二校验数据；
    所述向目标节点发送OAM帧，包括以下步骤：
    向目标节点发送第二OAM帧，所述第二OAM帧包括所述第二操作码和所述第二校验数据，所述第二校验数据包括第二接收时间、报文周期值、周期波动值和偏离报文比率，以使所述目标节点根据所述第二OAM帧和预设数量阈值得到报文周期性校验结果。
  9. 根据权利要求6所述的网络监测方法，其中，在所述操作码为第三操作码的情况下，所述校验数据包括第三校验数据；
    所述向目标节点发送OAM帧，包括以下步骤：
    获取第一帧抢占配置参数，所述第一帧抢占配置参数用于表征所述源节点的帧抢占能力信息；
    根据所述第一帧抢占配置参数更新所述校验数据；
    向目标节点发送第三OAM帧，所述第三OAM帧包括所述第三操作码和所述第三校验数据，所述第三校验数据包括所述第一帧抢占配置参数，以使所述目标节点根据所述第三OAM帧与第二帧抢占配置参数得到帧抢占校验结果，其中,所述第二帧抢占配置参数用于表征当前节点的帧抢占能力信息。
  10. 根据权利要求6所述的网络监测方法，其中，在所述操作码为第三操作码的情况下，所述校验数据为第四校验数据；
    所述向目标节点发送OAM帧，包括以下步骤：
    获取校验状态，所述校验状态用于表征当前节点的状态信息；
    在所述校验状态为第一校验状态的情况下，获取第一帧抢占配置参数，所述第一帧抢占配置参数用于表征所述源节点的帧抢占能力信息；
    根据所述第一帧抢占配置参数更新所述校验数据，并将所述校验状态更新为第二校验状态；
    向目标节点发送第四OAM帧，所述第四OAM帧包括所述第三操作码和所述第四校验数据，所述第四校验数据包括所述第一帧抢占配置参数和所述校验状态，以使所述目标节点在所述校验状态为第二校验状态的情况下，所述目标节点 根据所述第四OAM帧与第二帧抢占配置参数得到帧抢占校验结果，其中，所述第二帧抢占配置参数用于表征当前节点的帧抢占能力信息，并以使所述目标节点将所述校验状态更新为第一校验状态。
  11. 一种网络监测装置，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其中，所述处理器执行所述计算机程序时实现如权利要求1至10中任意一项所述的网络监测方法。
  12. 一种计算机可读存储介质，其中，存储有计算机程序，所述计算机程序被处理器执行时，实现如权利要求1至10中任意一项所述的网络监测方法。
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