CN115665001A

CN115665001A - Flow generation detection method and device, electronic equipment and computer program product

Info

Publication number: CN115665001A
Application number: CN202211281574.1A
Authority: CN
Inventors: 王娟; 霍永华; 李宏; 左延智; 王莉; 王宇; 于红增
Original assignee: CETC 54 Research Institute; 63921 Troops of PLA
Current assignee: CETC 54 Research Institute; 63921 Troops of PLA
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-31

Abstract

The embodiment of the disclosure discloses a flow generation detection method, a flow generation detection device, electronic equipment and a computer program product, wherein the method comprises the following steps: acquiring a sending parameter of a sending data packet set by a user; simulating that a sending device in the network sends a data packet based on the sending parameters, and outputting a level signal to a frequency counter after sending a set number of data packets, wherein the polarity of the level signal output currently is opposite to that of the level signal output last time; after the total packets are sent, acquiring data sending frequency parameters from the frequency counter; after the initial packet frequency in the sending parameters is increased progressively according to a set rule, returning to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters for execution; and decreasing the initial packet length in the sending parameters according to a set rule, restoring the packet frequency in the sending parameters into the initial packet frequency, and returning to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters.

Description

Flow generation detection method and device, electronic equipment and computer program product

Technical Field

The present disclosure relates to the field of network technologies, and in particular, to a method and an apparatus for detecting traffic generation, an electronic device, and a computer program product.

Background

With the convergence development of service diversification, service fusion, network opening and terminal intellectualization, the network coverage field is rapidly expanded, new applications are greatly emerged, network flow is increased rapidly, and fine-grained resources of diversified applications and important services are not achieved; in addition, the flow monitoring and detecting equipment deployed in the current network can only aim at single node and local information, the information acquired from the network is relatively isolated, the correlation analysis and the comprehensive presentation of multi-point information along a link are also deficient, the whole-process global monitoring of the flow cannot be realized, and a comprehensive real-time data basis cannot be provided in the aspects of quick positioning of network faults, comprehensive evaluation of network running states and the like; meanwhile, various network monitoring means are independently constructed, and resultant force is not formed.

The uniform packet sending is one of important functions of the network probe, and when the network speed is upgraded to ten thousand million, the packet sending function needs to be upgraded to ten thousand million correspondingly, and the line speed must be reached. The original software package sending mode needs to be upgraded into hardware package sending, so that a method for generating hardware flow is provided. How to detect the flow data packet sent by the hardware is a problem, the packet cannot be directly captured by the probe of the user for verification, and a scheme for third-party instrument and meter inspection can be designed. The high-precision data acquisition card outputs a level signal every time 100 data packets are sent, the polarity of the level signal is opposite to that of the last output, namely a complete square wave signal is observed once, and the transmission of 200 data packets is represented. The frequency of the square wave can be measured to obtain the flow sending packet frequency, and the sending uniformity can be verified by checking a data record trend graph.

With the convergence development of networks, the network coverage field is rapidly expanded, new applications are greatly emerged, network flow is increased rapidly, the network transmission bandwidth is expanded from hundreds/kilomega to ten thousand mega, the monitoring capability of the network flow is limited below kilomega at present, and the flow monitoring of a large-bandwidth transmission link is still blank; in addition, the monitoring equipment deployed in the current network can only aim at single node and local information, the information acquired from the network is relatively isolated, the correlation analysis and the comprehensive presentation of the multi-point information along the link are also deficient, the whole-process global monitoring of the flow can not be realized, and a comprehensive real-time data basis can not be provided in the aspects of the quick positioning of network faults, the comprehensive evaluation of the network operation state and the like; meanwhile, no unified standard which is suitable for the application characteristics of the service network is formed in the aspect of flow monitoring, and various network monitoring means are independently constructed without forming resultant force. Therefore, research on the large-bandwidth global traffic-aware monitoring technology and establishment of network traffic monitoring specifications are urgent.

Disclosure of Invention

The embodiment of the disclosure provides a flow generation detection method and device, electronic equipment and a computer program product.

In a first aspect, an embodiment of the present disclosure provides a flow generation detection method, where the method is performed on a high-precision data acquisition card installed on a flow probe, where the high-precision data acquisition card is connected to a frequency counter, and the method includes:

acquiring a sending parameter of a sending data packet set by a user; the sending parameters comprise initial packet length, initial packet frequency and total packet number;

simulating that a sending device in the network sends a data packet based on the sending parameters, and outputting a level signal to a frequency counter after sending a set number of data packets, wherein the polarity of the level signal output currently is opposite to that of the level signal output last time;

after the data packets of the total packet are sent, acquiring a data sending frequency parameter from the frequency counter;

after the initial packet frequency in the sending parameters is increased according to a set rule, returning to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters for execution until the sent data packet occupies the whole network bandwidth;

the initial packet length in the sending parameters is decreased progressively according to a set rule, and after the packet frequency in the sending parameters is restored to the initial packet frequency, the step of simulating the sending equipment in the network to send the data packet based on the sending parameters is returned to be executed until the sent data packet occupies the whole network bandwidth;

and detecting the uniformity and stability of the data packets sent by the flow probe based on the frequency parameter set acquired from the frequency counter and the level signal output to the frequency counter.

Further, detecting the uniformity and stability of the data packets sent by the flow probe based on the frequency parameter set obtained from the frequency counter and the level signal output to the frequency counter, includes:

determining whether the count value in the frequency parameter set and the total number of actual data packets sent under the once complete square wave level signal meet the requirement or not aiming at the once complete square wave level signal output by the frequency counter; and/or the presence of a gas in the gas,

each frequency value in the frequency parameter set is enlarged by a fixed multiple and is compared with the initial packet frequency value, if the frequency values are consistent, the uniformity of the transmitted data packet is satisfied, and if the frequency values are inconsistent, the uniformity of the transmitted data packet is not satisfied; and/or the presence of a gas in the gas,

and determining whether the plurality of frequency values and/or the plurality of count values in the frequency parameter set are straight lines, if not, indicating that the stability of the transmitted data packet does not meet the requirement, and if the plurality of frequency values and/or the plurality of count values in the frequency parameter set are straight lines, indicating that the stability of the transmitted data packet meets the requirement.

Further, a high-precision data acquisition card installed on the flow probe sends the data packet to another flow probe located in the network.

In a second aspect, the disclosed embodiments provide a flow generation detection device, wherein the device is implemented on a high-precision data acquisition card mounted on a flow probe, the high-precision data acquisition card being connected to a frequency counter, the device comprising:

the acquisition module is configured to acquire a transmission parameter of a transmission data packet set by a user; the sending parameters comprise initial packet length, initial packet frequency and total packet number;

the first sending module is configured to simulate sending of data packets by sending equipment in a network based on the sending parameters, and output a level signal to the frequency counter after sending of a set number of data packets, wherein the polarity of the level signal output currently is opposite to that of the level signal output last time;

a second sending module configured to obtain a data sending frequency parameter from the frequency counter after sending the total number of data packets;

the first returning module is configured to increase the initial packet frequency in the sending parameters according to a set rule, and then return to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters until the sent data packet occupies the whole network bandwidth;

a second returning module, configured to decrement an initial packet length in the sending parameters according to a set rule, and return to the step of simulating, based on the sending parameters, a sending device in the network to send a data packet after restoring a packet frequency in the sending parameters to the initial packet frequency until the sent data packet occupies the entire network bandwidth;

and the verification module is configured to detect the uniformity and stability of the data packet sent by the flow probe based on the frequency parameter set acquired from the frequency counter and the level signal output to the frequency counter.

Further, the verification module includes:

a first determining submodule configured to determine, for a complete square wave level signal output to the frequency counter for one time, whether a count value in the frequency parameter set and a total number of actual data packets sent under the complete square wave level signal for one time meet requirements; and/or the presence of a gas in the atmosphere,

a comparison submodule configured to enlarge each frequency value in the frequency parameter set by a fixed multiple, compare the frequency value with the initial packet frequency value, if the frequency value is consistent with the initial packet frequency value, indicate that the uniformity of the transmitted data packet meets the requirement, and if the frequency value is inconsistent with the initial packet frequency value, indicate that the uniformity of the transmitted data packet does not meet the requirement; and/or the presence of a gas in the gas,

and the second determining submodule is configured to determine whether the plurality of frequency values and/or the plurality of count values in the frequency parameter set are in straight lines, if not, the stability of the sent data packet is not satisfied, and if the plurality of frequency values and/or the plurality of count values in the frequency parameter set are in a straight line, the stability of the sent data packet is satisfied.

In a third aspect, an embodiment of the present disclosure provides a traffic generation detection system, including: the system comprises a flow probe, a B code signal source, a frequency counter and a switch; the flow probe comprises a high-precision data acquisition card;

the input signal of the flow probe is connected to the B code signal source, the first output signal is connected to the frequency counter, and the second output signal is connected to the switch;

the flow probe receives a sending parameter of a sending data packet set by a user; the sending parameters comprise initial packet length, initial packet frequency and total packet number;

the flow probe simulates that a sending device in the network sends data packets based on the sending parameters, and outputs a level signal to a frequency counter after sending a set number of data packets, wherein the polarity of the level signal output currently is opposite to that of the level signal output last time;

after the flow probe sends the total packets of a plurality of data packets, acquiring data sending frequency parameters from the frequency counter;

after the initial packet frequency in the sending parameters is increased progressively according to a set rule by the flow probe, returning to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters to execute until the sent data packet occupies the whole network bandwidth;

the flow probe decreases the initial packet length in the sending parameters according to a set rule, restores the packet frequency in the sending parameters to the initial packet frequency, and then returns to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters to execute until the sent data packet occupies the whole network bandwidth;

and the flow probe detects the uniformity and stability of the data packet sent by the flow probe based on the frequency parameter set acquired from the frequency counter and the level signal output to the frequency counter.

The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible design, the apparatus includes a memory configured to store one or more computer instructions that enable the apparatus to perform the corresponding method, and a processor configured to execute the computer instructions stored in the memory. The apparatus may also include a communication interface for the apparatus to communicate with other devices or a communication network.

In a fourth aspect, the disclosed embodiments provide an electronic device comprising a memory, a processor, and a computer program stored on the memory, wherein the processor executes the computer program to implement the method of any of the above aspects.

In a fifth aspect, the disclosed embodiments provide a computer-readable storage medium for storing computer instructions for any one of the above apparatuses, which when executed by a processor, are configured to implement the method of any one of the above aspects.

In a sixth aspect, the disclosed embodiments provide a computer program product comprising computer instructions for implementing the method of any one of the above aspects when executed by a processor.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the advantages and innovations of the present disclosure over the prior art are as follows:

1. based on the frequency counter test, the number and the packet frequency of the sent data packets are calculated, the uniformity, the accuracy and the precision of the sent packets can be directly verified, and support is provided for accurate regulation and control of resources;

2. a scheme based on the third-party instrument and meter inspection is designed, the accuracy and precision of measurement are determined by third-party equipment, and the fairness and the testability of the method and the idea are ensured.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

Other features, objects, and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 illustrates a flow diagram of a traffic generation detection method according to an embodiment of the present disclosure;

FIG. 2 illustrates a schematic diagram of one deployment implementation of a flow probe according to an embodiment of the present disclosure;

FIG. 3 illustrates a schematic view of a flow probe configuration according to an embodiment of the present disclosure;

FIG. 4 shows a schematic representation of the connection of a flow probe and a frequency counter according to an embodiment of the present disclosure;

FIG. 5 illustrates a detection method for high uniformity flow generation according to an embodiment of the present disclosure;

fig. 6 shows a block diagram of a flow generation detection device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an electronic device suitable for implementing a traffic generation detection method according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Furthermore, parts that are not relevant to the description of the exemplary embodiments have been omitted from the drawings for the sake of clarity.

In the present disclosure, it is to be understood that terms such as "including" or "having," etc., are intended to indicate the presence of the disclosed features, numbers, steps, actions, components, parts, or combinations thereof, and do not preclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof are present or added.

It should be further noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The details of the embodiments of the present disclosure are described in detail below with reference to specific embodiments.

Fig. 1 shows a flow chart of a traffic generation detection method according to an embodiment of the present disclosure. As shown in fig. 1, the method is performed on a high-precision data acquisition card mounted on a flow probe, the high-precision data acquisition card is connected with a frequency counter, and the flow generation detection method comprises the following steps:

in step S101, a transmission parameter of a transmission packet set by a user is acquired; the sending parameters comprise initial packet length, initial packet frequency and total packet number;

in step S102, a transmitting device in the analog network transmits a data packet based on the initial packet length and the initial packet frequency, and outputs a level signal to a frequency counter after transmitting a set number of data packets, where the polarity of the level signal currently output is opposite to that of the level signal last output;

in step S103, after the total number of data packets is sent, acquiring a data sending frequency parameter from the frequency counter;

in step S104, after the packet frequency used last time is increased according to the set rule, returning to the step of simulating the sending device in the network to send the data packet based on the sending parameter to be executed until the sent data packet occupies the whole network bandwidth;

in step S105, after the packet length used last time is decreased according to the set rule, returning to the step of simulating the transmission device in the network to transmit the data packet based on the transmission parameter until the transmitted data packet occupies the entire network bandwidth;

in step S106, based on the frequency parameter set obtained from the frequency counter and the level signal output to the frequency counter, the uniformity and stability of the data packet sent by the flow probe are detected.

In this embodiment, the traffic probe is a dedicated device for implementing large-bandwidth global traffic sensing monitoring, is a typical network probe, and is deployed in a service network to implement monitoring of network performance parameters, in particular, traffic sensing monitoring. The flow probe includes two modes of operation: (1) In the passive working mode, all data packets flowing through the equipment can be acquired from a mirror image port of a switch or a router, and a performance index is acquired by analyzing an IP protocol; (2) An active mode of operation, connected to a communication port of the switch, for actively sending data packets by the flow probe for generating flow or simulating a business application.

After the flow probe is started, the flow probe is in a passive working mode by default, and unattended operation and automatic operation can be achieved. Under the user setting, an active working mode can be selected, a manual intervention state is entered, and the flow generation function of the flow probe can be started after the user sets corresponding sending parameters, so that the flow probe starts to send a series of data packets.

Each data packet sent by the flow probe is a data packet meeting the requirements of the TCP/IP protocol, and includes parameters such as a correct source MAC address, a correct destination MAC address, a correct source IP address, a correct destination IP address, a correct source port, a correct destination port, and the like.

In the active operating mode, the sending parameters that the user needs to set may include: (1) The packet length, also referred to as frame length, is the length of the data packet, 64 bytes minimum and 1518 bytes maximum. (2) Packet frequency, which represents the number of data packets sent per second, also referred to as frame number, from a minimum of 1 packet/second to several million packets/second. (3) The total packet number, that is, the total number of data packets, indicates the total number of data packets that need to be generated by the traffic probe, and may also specify the total transmission time, which may be converted from the total packet number to the total transmission time.

A difficulty in sending packets in the active mode of operation is the uniformity with which packets are sent. In the real world a large number of devices are periodic, for example: the radar scanning period is fixed, and the data obtained by scanning is also uniform in period; the refresh frequency of the television is fixed and the video data is also periodic and uniform. When the flow probe is used for simulating and sending radar data or video data, strong periodic rules must be simulated.

Although many test software for sending data packets by using a network card can simulate to generate data packets, after data are transmitted to a network card buffer area, the network card can completely send out the data in the buffer area at a time, then the next round of data transmission is waited, the sending speed completely depends on whether the buffer area is full to a certain extent, and the uniformity basically does not exist.

Many test instruments adopt hardware to send out a packet, can only accomplish roughly evenly, satisfy the packet quantity of sending out of one second. When the packet frequency is an integer, i.e. 1000000 is divided by the packet frequency value, for example: when the packet frequency is 2000 frames/second, one packet is sent in 500 microseconds on average, and the hardware can be uniform. If the packet frequency is 3000 frames/second, then it is 333 microseconds in average, since unless full, cumulative errors occur.

Compared with the prior art, in the scheme provided by the embodiment of the disclosure, the flow probe adopts an innovative packet sending algorithm and FPGA hardware to send packets quickly, so that high uniformity is achieved, and the intervals between data packets are equal.

The detection object in the embodiment of the disclosure is a flow probe, and the detection content is verification of a high-uniformity flow generation method of the flow probe.

In order to detect high uniformity of flow generation, 1 frequency counter can be configured for the flow probe, a sending counting level signal output by the flow probe a is connected to a channel a of the frequency counter, the frequency counter counts the change of the level signal in an accumulation manner, the counting value of the frequency counter is increased by one every time a rising edge changing from a low level to a high level is detected, so that the frequency counter value is increased by one every time a preset number (for example 200) of data packets are sent, and conversely, the counter value is increased by one to indicate that the sending condition of the preset number (for example 200) of data packets is detected. The successful detection of the high uniformity flow generation function can be verified by continuously recording the counting value set of the counter and the recorded trend chart.

In some embodiments, the frequency counter may comprise 3 channels, and the precision data acquisition card may be connected to any one of the channels of the frequency counter. The frequency counter may display measurements such as the value of the frequency of transmission of the data packet or the count of data packets transmitted over a period of time.

The sending parameters set by the user include the initial packet length, the initial packet frequency and the total number of the data packets. Each data packet sent by the flow probe has a length, and in the network, the length of the data packet can be no less than 64 bytes at the shortest and no more than 1518 bytes at the longest. If the communication content of the two parties is less than 64 bytes, padding empty bytes of the sender can be filled to 64 bytes; if the content of the two-party communication is larger than 1518 bytes, for example, 5000 bytes of a picture, the two-party communication can be split into small data packets by the sending party, each of which does not exceed 1518 bytes, so that the picture is forcedly split into 4 data packets. The splitting process and the forced filling process are completed at the bottom layer of the operating system. The flow probe can capture all data packets and also capture the splitting process and the forced filling process, so that the splitting and forced filling process can be simulated when the data packets are sent.

Different packet lengths have different network requirements, and a big packet of 1518 bytes occupies more network resources; the packet of 64 bytes does not occupy network resources, but puts higher requirements on devices such as switches and routers. Therefore, when sending data packets, it is necessary to comprehensively measure and select a proper packet length for testing.

Packet frequency is another important parameter, representing the number of one second data packets. The higher the packet frequency value, the more content the network must transmit in one second, and the more network resources are required. The selection of the packet frequency value is an important content of the test, and a test table can be obtained by combining the packet length, and the following table lists the parameters of the ten-gigabit network:

test sequence number	Bag length (byte)	Maximum packet frequency (packet/second)
			1	64	14,880,952
2	128	8,445,945
			3	256	4,528,985
4	512	2,349,624
			5	1024	1,197,318
6	1280	961,538
			7	1518	812,743

The last transmission parameter is the total number of packets, which indicates the number of data packets that need to be transmitted in the current transmission process, and after the number is reached, the process of transmitting with the initial packet frequency and the initial packet length is automatically ended, at this time, the data transmission frequency parameter can be obtained from the frequency counter, that is, the execution of step S103 is completed. In some embodiments, the data transmission frequency parameter may include a count value and a frequency value, the count value is a count value incremented by one every time the frequency counter detects a change in the level signal, and the frequency value is calculated based on the count value and the period length in a period of time.

After sending out a number of data packets according to the sending parameters set by the user, the initial packet frequency may be incremented, and the incrementing rule may be preset, for example, may be configured by the user, for example, the user may configure the packet length decreasing sequence and the packet frequency incrementing sequence shown in table 1 above. For example, the initial packet frequency is 812743 packets/sec, the packet frequency may be incremented to 961538 packets/sec this time, and may be incremented to 1197318 packets/sec next time, it is understood that the packet frequency in the transmission parameter may be unchanged during the incrementing process, and each time the packet frequency is incremented, the step S102 is returned to be executed again until the transmitted data packet occupies the entire network bandwidth, and the packet frequency is stopped to be incremented, and the next step S105 is executed.

The network bandwidth can be understood as the maximum data transmission capacity of the data transmission channel. For example: a terabyte network means that a maximum of ten gigabit can be transmitted in one second, 10Gbps, divided by 8, which can be converted to bytes, transmitting 1250 megabytes. If each data packet is 1024 bytes long, it is equivalent to transmitting 1,197,318 data packets at most. If a 1024 byte data packet is transmitted at such a packet frequency value, the entire network bandwidth can be occupied.

A plurality of data transmission frequency parameters under different packet frequencies can be obtained by a mode of increasing the packet frequency to fully occupy the whole network bandwidth, and the plurality of data transmission frequency parameters are added into a frequency parameter set.

The packet frequency in the transmission parameters may then be restored to the original packet frequency, and the packet length may be decremented from the original packet length. For example, as shown in table 1, the initial packet length is 1518 bytes, and at this time, the packet length may be decreased from the initial packet length to 1280 bytes, and then the above steps are repeated in step 102. That is, under the condition that the packet length after the decrement is 1280 bytes, the flow of sending the data packet is re-executed by using the initial packet frequency and the packet frequency after the increment, a plurality of data sending frequency parameters under different packet frequencies are obtained, and the data sending frequency parameters are added into the frequency parameter set.

In this embodiment, the data packet is stopped being sent after the sent data packet occupies the entire network bandwidth by increasing the packet frequency and increasing the packet length. That is, both the increase in packet frequency and the decrease in packet length may be conditioned on the entire network bandwidth being occupied. Of course, it will also be appreciated that the packet frequency may stop incrementing if it is incremented to a maximum value set by the user, and the packet length may stop decrementing if it is decremented to a minimum value set by the user.

That is, at each packet length value, a data transmission frequency parameter at a different packet frequency is obtained. Based on these frequency parameters and the level signal output from the flow probe to the frequency counter, the flow generation function of the flow probe, that is, whether the flow probe can generate flow with high uniformity, can be verified.

The technical problem to be solved by the present disclosure is to provide a traffic generation detection method, which aims at the problem of how to verify that data packets sent by traffic generation are uniform and stable, high-precision time is the basis of traffic monitoring performed by a traffic probe, and uniform packet sending is one of important functions of a network probe. Traffic generation may be understood as the process of generating a series of data packets according to parameters such as packet frequency, packet length, destination IP address, destination port, etc. specified by a user and sending the data packets to a service network.

In an optional implementation manner of this embodiment, in step S106, the step of detecting uniformity and stability of the data packets sent by the flow probe based on the frequency parameter set obtained from the frequency counter and the level signal output to the frequency counter further includes the following steps:

determining whether the count value in the frequency parameter set and the total number of actual data packets sent under the once complete square wave level signal meet the requirement or not aiming at the once complete square wave level signal output by the frequency counter; and/or the presence of a gas in the atmosphere,

In this optional implementation, the high-precision data acquisition card may output one level signal every time 100 data packets are sent, and the polarity of the level signal is opposite to that of the last output, that is, a complete square wave signal is observed once, which indicates that 200 data packets are sent. The frequency of the square wave can be measured to obtain the flow sending packet frequency, and the sending uniformity can be verified by checking a data record trend graph.

The flow probe may internally set a counter when transmitting data packets, for example, every 100 data packets are transmitted, an inverted level signal may be output, and the connection relationship is shown in fig. 4.

If the transmission count level signal is initially at a low level, the level signal is inverted once to become a high level after the 100 th packet is transmitted. The external frequency counter detects a rising edge from a low level to a high level, and then automatically increments the count value by one. If the level is inverted and becomes low after the transmission of 100 packets is continued, the external frequency counter detects the falling edge from high to low and the count value is not changed. Thus, after every 200 packets are transmitted, the count value of the external frequency counter is incremented by one. If 2000 packets are transmitted, the count value is 10. From the count value it can be determined visually whether the traffic probe has sent a sufficient number of packets.

Therefore, whether the count value in the frequency parameter set and the total number of actual data packets sent under the one-time complete square wave level signal meet the requirement can be determined by observing the one-time complete square wave level signal and based on the count value on the frequency counter and the total number of data packets actually sent by the flow probe. In some embodiments, if the count value in the frequency parameter set is not equal to the total packet number of the data packets sent by the high-precision data acquisition card divided by 2 and then multiplied by the number of output level signals of the high-precision data acquisition card, it indicates that the number of the data packets sent by the flow probe is wrong and the sending function fails; otherwise, the number of the data packets sent by the flow probe is satisfied.

In addition, after each frequency value in the frequency parameter set is enlarged by a fixed multiple, the frequency value is compared with a packet frequency value in a sending parameter set by a user, and if the frequency value is inconsistent with the packet frequency value in the sending parameter set by the user, the uniformity of a sent data packet is not satisfied with the requirement; otherwise, the uniformity of the transmitted data packets is satisfied.

The total number of packets and the count value have the following relationship: total number of packets = count value × 200.

For example, the following steps are carried out: assuming a packet frequency of 20,000 frames/second and 2 ten thousand frames are transmitted in one second, the count value is 100, i.e. the frequency value of the frequency counter is 100Hz.

When the packet frequency is set to 200,000 frames/second and 20 ten thousand frames are transmitted in one second, the count value is 1000 and the frequency value is 1000Hz.

When the packet frequency value is set to 2,000,000 frames/second, 200 ten thousand frames are transmitted in one second, the count value is 10,000, and the frequency value is 10000Hz.

It is possible to derive a packet frequency value by reverse-deducing from the frequency value measured by the frequency counter and then verify whether it is the same as the packet frequency value set by the user.

The user may set that the flow probe is required to continuously transmit for 102 seconds, and check whether the frequency value measured by the frequency counter is stable to the same value, for example: after the head and the tail are removed, the continuous 100-second frequency values are all 1000Hz, which means that the packet frequency sent by the flow probe is stabilized at 200,000 ten thousand frames/second, and at this time, the uniformity of the sent data packets can be considered to meet the requirement.

And by checking a data recording trend graph (which can be directly obtained from a frequency counter) corresponding to the frequency value and the count value in the frequency parameter set, if the trend graph is not a straight line, the stability of the transmitted data packet is not satisfied, otherwise, the stability of the transmitted data packet is satisfied.

Through the detection, if the sending of the flow probe can be normal, and the uniformity and the stability all meet the requirements, the flow generation function of the flow probe is indicated to have no problem, otherwise, the flow generation function of the flow probe is indicated to have the problem and not meet the requirements.

In some embodiments, a high precision data acquisition card mounted on the flow probe transmits the data packet to another flow probe located in the network.

Figure 2 illustrates a schematic diagram of one deployment implementation of a flow probe according to an embodiment of the present disclosure. As shown in fig. 2, a flow probe with a high-precision data acquisition card installed is deployed into a service network. Two flow probes can be deployed in a service network, and the two flow probes are deployed at two ends of a communication line to be tested; one flow probe A is used for sending data packets, the other flow probe B is used for receiving the data packets, the two flow probes are respectively connected with the B code signal source equipment and the communication ports of the switches respectively, and respective IP addresses and subnet masks are set.

Fig. 3 shows a schematic flow probe structure according to an embodiment of the present disclosure. As shown in fig. 3, the flow probe may be a server with a high-precision data acquisition card, and includes 2 input signals including a B-code signal and a received network data packet, and 2 output signals including a transmitted network data packet and a transmitted count level signal.

At a sending end, a flow probe A is connected to a communication port of a switch A, a user sets sending parameters, starts a flow generation function and starts to send a network data packet. The transmitted network data packet may be transmitted to a destination receiving end through a service network.

At the receiving end, the traffic probe B is connected to a communication port of the switch B, and the switch B forwards the network data packet to the traffic probe B. After receiving the network data packets, the flow probe B may calculate a delay value according to the timestamp of each data packet, and may obtain a conclusion about whether packet loss occurs according to whether the total number of the received data packets is equal to the total number of the data packets sent by the flow probe a at the sending end. The timestamp of the data packet may be determined by the traffic probe B based on the real-time when the data packet was received. Because the flow probe A and the flow probe B are both connected to a unified B code signal source, the flow probe A and the flow probe B have unified time standards.

Figure 4 shows a schematic of the connection of a flow probe and a frequency counter according to an embodiment of the present disclosure. As shown in fig. 4, in order to detect high uniformity of flow generation, 1 frequency counter and 1B code signal source may be further configured at the sending end of the flow probe, the B code signal output by the B code signal source is connected to the B code signal input end of the flow probe a, the sending counting level signal output by the flow probe a is connected to the channel a of the frequency counter, the frequency counter counts changes of the level signal in an accumulated manner, and each time a rising edge that changes from a low level to a high level is detected, the counting value of the frequency counter is increased by one, so that the frequency counter value is increased by one for each sending of a predetermined number (e.g., 200) of data packets, and conversely, the counter value is increased by one to indicate that the sending of the predetermined number (e.g., 200) of data packets is detected. The successful detection of the high uniformity flow generation function can be verified by continuously recording the counting value set of the counter and the recorded trend chart.

Fig. 5 illustrates a detection method for high uniformity flow generation in accordance with an embodiment of the present disclosure. As shown in fig. 5, the method comprises the steps of:

s1: connecting a high-precision data acquisition card arranged on a flow probe to a channel A of a frequency counter;

s2: selecting a flow generation function of a flow probe, and setting the packet frequency, the packet length and the total packet number of data packets sent by a high-precision data acquisition card;

s3: the high-precision data acquisition card sends data packets, and each time a set number of data packets are sent, a level signal is output to the frequency counter and has a polarity opposite to that of the last output;

s4: after the high-precision data acquisition card finishes sending all data packets, reading and recording a count value, a frequency value and a data recording trend chart on a frequency counter, and then resetting the frequency counter;

s5: the packet frequency value of the data packet sent by the high-precision data acquisition card is increased, and the step S3 is returned until the sent data packet occupies the whole network bandwidth;

s6: gradually decreasing the packet length value of the ten-gigabit Ethernet tester until the packet length value reaches 64, gradually increasing the packet frequency value based on the setting of the step S2 every time the packet length value is decreased, and repeating the steps S3 and S4 until the transmitted data packet occupies the whole network bandwidth;

s7: analyzing a counting value set on a frequency counter, observing a complete square wave signal once according to the output level of the high-precision data acquisition card, and if the value in the counting value set is not equal to the total packet number of data packets sent by the high-precision data acquisition card/2 times the number of data packets of the output level signal of the high-precision data acquisition card, indicating that the number of the sent data packets is wrong and the sending function is failed; otherwise, the number of the transmitted data packets meets the requirement;

the count value, the frequency value and the data recording trend graph set on the frequency counter are analyzed and recorded, because the high-precision data acquisition card outputs one level signal every time 100 data packets are sent, the polarity of the level signal is opposite to that of the last output, a complete square wave signal can be observed once in the channel A of the frequency counter, which indicates that 200 data packets are sent, and then 200000 packets are sent every time, and the count value which can be recorded theoretically is 1000. If the value in the counting value set is not 1000, the number of the transmitted data packets is wrong, the transmission function is failed, and the requirement is not met. Otherwise, the number is 1000, which indicates that the number of the sent packages meets the requirement;

s8: continuously checking, namely expanding each frequency value in the counting value set by a fixed multiple, comparing the frequency value with the packet frequency value set in the step S2, and if the frequency value is not consistent with the packet frequency value set in the step S2, indicating that the uniformity of the transmitted data packet does not meet the requirement; otherwise, the uniformity of the transmitted data packet meets the requirement;

s9: checking a data record trend graph in the numerical value set, if the data record trend graph is not a straight line, indicating that the stability of the transmitted data packet does not meet the requirement, otherwise indicating that the stability of the transmitted data packet meets the requirement;

s10: judging whether the checks of the steps S7, S8 and S9 all meet the requirements, if so, indicating that the high-uniformity flow generation function is successfully detected; otherwise, the high uniformity flow generation function fails to detect;

detection of high uniformity flow generation is accomplished.

The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.

Fig. 6 shows a block diagram of a flow generation detection device according to an embodiment of the present disclosure. The apparatus may be implemented as part or all of an electronic device through software, hardware, or a combination of both. As shown in fig. 6, the flow rate generation detection device includes:

the device comprises an acquisition module, a sending module and a sending module, wherein the acquisition module is configured to acquire sending parameters of sending data packets set by a user; the sending parameters comprise initial packet length, initial packet frequency and total packet number;

a first sending module 601, configured to simulate, based on the sending parameters, a sending device in the network to send a data packet, and output a level signal to the frequency counter after sending a set number of data packets, where the polarity of the level signal currently output is opposite to that of the level signal last output;

a second sending module 602, configured to obtain a data sending frequency parameter from the frequency counter after sending the total number of data packets;

a first returning module 603, configured to increase the initial packet frequency in the sending parameters according to a set rule, and then return to the step of simulating, based on the sending parameters, that a sending device in the network sends a data packet, until the sent data packet occupies the entire network bandwidth;

a second returning module 604, configured to decrement the initial packet length in the sending parameter according to a set rule, and after recovering the packet frequency in the sending parameter to the initial packet frequency, return to the step of simulating, based on the sending parameter, the sending device in the network to send the data packet for execution until the sent data packet occupies the entire network bandwidth;

a verification module 605 configured to detect uniformity and stability of the data packets sent by the flow probe based on the frequency parameter set obtained from the frequency counter and the level signal output to the frequency counter.

The traffic generation detection device in this embodiment corresponds to the traffic generation detection method described above, and therefore specific details may refer to the description of the traffic generation detection method described above, and are not described herein again.

The embodiment of the present disclosure further provides a flow generation detection system, including: the system comprises a flow probe, a B code signal source, a frequency counter and a switch; the flow probe comprises a high-precision data acquisition card;

the flow probe simulates sending data packets by sending equipment in a network based on the sending parameters, and outputs a level signal to a frequency counter after sending a set number of data packets, wherein the polarity of the level signal output currently is opposite to that of the level signal output last time;

the flow probe decrements the initial packet length in the sending parameters according to a set rule, restores the packet frequency in the sending parameters to the initial packet frequency, and then returns to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters to execute until the sent data packet occupies the whole network bandwidth;

As shown in fig. 7, electronic device 700 includes a processing unit 701, which may be implemented as a CPU, GPU, FPGA, NPU, or other processing unit. The processing unit 701 may execute various processes in the embodiment of any one of the methods described above of the present disclosure according to a program stored in a Read Only Memory (ROM) 702 or a program loaded from a storage section 708 into a Random Access Memory (RAM) 703. In the RAM703, various programs and data necessary for the operation of the electronic apparatus 700 are also stored. The processing unit 701, the ROM702, and the RAM703 are connected to each other by a bus 704. An input/output (I/O) interface 705 is also connected to bus 704.

The following components are connected to the I/O interface 705: an input portion 706 including a keyboard, a mouse, and the like; an output section 707 including components such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a speaker; a storage section 708 including a hard disk and the like; and a communication section 709 including a network interface card such as a LAN card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. A drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 710 as necessary, so that a computer program read out therefrom is mounted into the storage section 708 as necessary.

In particular, according to embodiments of the present disclosure, any of the methods described above with reference to embodiments of the present disclosure may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program comprising program code for performing any of the methods of the embodiments of the present disclosure. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 709, and/or installed from the removable medium 711.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units or modules described in the embodiments of the present disclosure may be implemented by software or hardware. The units or modules described may also be provided in a processor, and the names of the units or modules do not in some cases constitute a limitation of the units or modules themselves.

As another aspect, the present disclosure also provides a computer-readable storage medium, which may be the computer-readable storage medium included in the apparatus in the above-described embodiment; or it may be a separate computer readable storage medium not incorporated into the device. The computer readable storage medium stores one or more programs for use by one or more processors in performing the methods described in the present disclosure.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features and the technical features disclosed in the present disclosure (but not limited to) having similar functions are replaced with each other to form the technical solution.

Claims

1. A flow generation detection method, wherein the method is performed on a high precision data acquisition card mounted on a flow probe, the high precision data acquisition card being connected to a frequency counter, the method comprising:

after the initial packet frequency in the sending parameters is increased progressively according to a set rule, returning to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters to execute until the sent data packet occupies the whole network bandwidth;

the initial packet length in the sending parameters is decreased according to a set rule, and after the packet frequency in the sending parameters is restored to the initial packet frequency, the step of simulating the sending equipment in the network to send the data packet based on the sending parameters is returned to be executed until the sent data packet occupies the whole network bandwidth;

2. The method of claim 1, wherein detecting the uniformity and stability of the data packets sent by the flow probe based on the frequency parameter set obtained from the frequency counter and the level signal output to the frequency counter comprises:

expanding each frequency value in the frequency parameter set by a fixed multiple, comparing the frequency value with the initial packet frequency value, if the frequency value is consistent with the initial packet frequency value, indicating that the uniformity of a transmitted data packet meets the requirement, and if the frequency value is inconsistent with the initial packet frequency value, indicating that the uniformity of transmitted data does not meet the requirement; and/or the presence of a gas in the gas,

3. A method according to any of claims 1-2, wherein a high precision data acquisition card mounted on the flow probe transmits the data packets to another flow probe located in the network.

4. A flow generation detection device, wherein the device executes on a high precision data acquisition card mounted on a flow probe, the high precision data acquisition card connected to a frequency counter, the device comprising:

the first returning module is configured to return to the step of simulating the sending equipment in the network to send the data packet to be executed based on the sending parameters after the initial packet frequency in the sending parameters is increased according to a set rule until the sent data packet occupies the whole network bandwidth;

the second return module is configured to decrease the initial packet length in the sending parameters according to a set rule, restore the packet frequency in the sending parameters to the initial packet frequency, and then return to the step of simulating the sending equipment in the network to send the data packet based on the sending parameters until the sent data packet occupies the whole network bandwidth;

and the verification module is configured to detect the uniformity and stability of the data packets sent by the flow probe based on the frequency parameter set acquired from the frequency counter and the level signal output to the frequency counter.

5. The apparatus of claim 1, wherein the verification module comprises:

a comparison submodule configured to enlarge each frequency value in the frequency parameter set by a fixed multiple, compare the frequency value with the initial packet frequency value, if the frequency value is consistent, indicate that the uniformity of the transmitted data packet meets the requirement, and if the frequency value is inconsistent, indicate that the uniformity included in the transmitted data does not meet the requirement; and/or the presence of a gas in the gas,

and the second determining submodule is configured to determine whether the plurality of frequency values and/or the plurality of count values in the frequency parameter set are straight lines, if not, the stability of the transmitted data packet is not satisfied, and if the plurality of frequency values and/or the plurality of count values in the frequency parameter set are straight lines, the stability of the transmitted data packet is satisfied.

6. The apparatus according to any of claims 4-5, wherein a high precision data acquisition card mounted on the flow probe transmits data packets to another flow probe located in a network.

7. A traffic generation detection system comprising: the system comprises a flow probe, a B code signal source, a frequency counter and a switch; the flow probe comprises a high-precision data acquisition card;

8. An electronic device comprising a memory, a processor, and a computer program stored on the memory, wherein the processor executes the computer program to implement the method of any of claims 1-3.

9. A computer readable storage medium having computer instructions stored thereon, wherein the computer instructions, when executed by a processor, implement the method of any one of claims 1-3.

10. A computer program product comprising computer instructions, wherein the computer instructions, when executed by a processor, implement the method of any one of claims 1-3.