WO2022037206A1 - Procédé et appareil de détection de perte de paquets sur un réseau, support de stockage et système de réseau - Google Patents

Procédé et appareil de détection de perte de paquets sur un réseau, support de stockage et système de réseau Download PDF

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Publication number
WO2022037206A1
WO2022037206A1 PCT/CN2021/099802 CN2021099802W WO2022037206A1 WO 2022037206 A1 WO2022037206 A1 WO 2022037206A1 CN 2021099802 W CN2021099802 W CN 2021099802W WO 2022037206 A1 WO2022037206 A1 WO 2022037206A1
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detection
message
color
same
sending
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PCT/CN2021/099802
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English (en)
Chinese (zh)
Inventor
李伟超
黄勇
汪漪
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鹏城实验室
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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
    • 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
    • H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages

Definitions

  • the present invention relates to the technical field of network communication, and in particular, to a method, device, storage medium and network system for detecting network packet loss.
  • the detection of network transmission quality is mainly based on the coloring process of service packets.
  • the egress device counts the number of received dyeing service packets; the ingress device and egress device report the counted number of dyeing service packets to the management device, and the management device calculates the packet loss rate.
  • the detection process is an end-to-end measurement, which can only measure whether the packet loss of a packet flow occurs, and cannot accurately measure the network segment where the packet loss of a packet flow occurs.
  • the main purpose of the present invention is to detect a network packet loss detection method, device, storage medium and network system, and to solve how to accurately measure the network packet loss of a packet flow.
  • the present invention provides a method for detecting network packet loss, which is used for a sending end of a network system.
  • the network system further includes a receiving end and at least a pair of detecting ends, and the method includes the following steps:
  • the detection message includes message passing information obtained based on the coloring and quantity of the same-color dyed message detected by the detection end when the same-color dyed message passes through the detection end.
  • the step of sending a detection message to the receiving end in the next dyeing cycle after sending the same-color dyeing message to the receiving end includes:
  • the step of sending a detection message to the receiving end in the next dyeing cycle after sending the same-color dyeing message to the receiving end includes:
  • a detection message is sent to the receiving end based on the detection message trigger signal.
  • the method before the step of sending a detection message trigger signal after sending the same-color dyed message to the receiving end, the method further includes:
  • the step of sending a detection message to the receiving end based on the detection message trigger signal in the next dyeing cycle includes:
  • next dyeing cycle based on the detection message trigger signal, record the second number of the second same-color dyed messages sent by the sending end in the next dyeing cycle, and determine the first Whether the number of second issued documents is equal to the second preset threshold;
  • a detection packet is sent to the receiving end.
  • the second preset threshold is equal to 1/2 of the first preset threshold.
  • the present invention also provides a network packet loss detection method, which is used for at least one pair of detection ends of a network system, the network system further includes a sending end and a receiving end, and the method includes the following steps:
  • the detection message carrying the message passing information is sent out, so that the receiving end determines the packet loss situation of the same-color dyed message based on the detection message.
  • the step of adding message pass information to the detection message includes:
  • the message passing information is added to the detection message.
  • the detection message adopts the user datagram protocol UDP.
  • the detection packet includes:
  • UDP header where the UDP header includes the message type of the detection message
  • the flow table operation code unit includes a plurality of operation codes
  • a data unit the data unit is set in a one-to-one correspondence with the detection end, and the data unit is used to store the message passing information of the corresponding detection end.
  • the present invention also provides a method for detecting network packet loss, which is used for a receiving end of a network system.
  • the network system further includes a transmitting end and at least a pair of detecting ends, and the method includes the following steps:
  • the packet loss situation of the same-color dyed message is determined.
  • the step of determining the packet loss situation of the same-color dyed message based on the detection message includes:
  • the packet loss data information of the same-color dyed message is acquired based on at least one of the message passing information and the preset number of messages sent in a dyeing period of the same-color dyed message.
  • the step of determining the packet loss situation of the same-color dyed message based on the detection message includes:
  • the packet loss situation of the same-color dyed packet is determined.
  • the present invention also provides a network packet loss detection device, which is applied to the sending end. During the dyeing period, a detection message is sent to the receiving end.
  • the network packet loss detection device includes:
  • a signal triggering module configured to send a detection message triggering signal after sending the same-color dyeing message to the receiving end
  • a detection message sending module configured to send a detection message to the receiving end based on the detection message trigger signal in the next dyeing cycle.
  • the device for detecting network packet loss further includes:
  • a dyeing module configured to send the same-color dyeing message to the receiving end
  • the dyeing counting module is used to record the number of the same-color dyed messages sent by the sending end, and determine whether the number of issued messages is equal to the first preset threshold; if the number of issued messages is equal to the first preset threshold, then Proceed to the next staining cycle.
  • the detection message sending module includes:
  • the counting module is configured to, in the next dyeing cycle, based on the detection message trigger signal, record the second sending number of the second same-color dyeing message sent by the sending end in the next dyeing cycle, and determine the Whether the second number of sent messages is equal to a second preset threshold; if the second number of sent messages is equal to the second preset threshold, a detection message sending signal is sent;
  • a detection message generator configured to send a detection message to the receiving end based on the detection message sending signal.
  • the present invention also provides a transmitter, the transmitter includes:
  • the present invention also provides a network packet loss detection device, which is applied to the detection end, and the network packet loss detection device includes:
  • a detection and counting module configured to obtain message passing information based on the coloring and quantity of the same-color dyed messages detected by the detection end when the same-color dyed message sent by the sending end passes through the detection end;
  • a first receiving module configured to receive the detection message sent by the sending end in the next dyeing cycle after sending the same-color dyeing message to the receiving end;
  • An adding module is used to add the message pass information to the detection message
  • a first sending module configured to send a detection packet carrying the packet passing information, so that the receiving end determines the packet loss situation of the same-color dyed packet based on the detection packet.
  • the present invention also provides a detection terminal, the detection terminal includes:
  • the present invention also provides a network packet loss detection device, which is applied to the receiving end, and the network packet loss detection device includes:
  • the second receiving module is configured to receive the detection message sent by the sending end in the next dyeing cycle after sending the same-color dyeing message to the receiving end, wherein the detection message includes the same-color dyeing message passing through When the detection end is used, the message passing information obtained based on the dyeing and quantity of the same-color dyed messages detected by the detection end;
  • a determination module configured to determine the packet loss situation of the same-color dyed message based on the detection message.
  • the present invention also provides a receiving end, the receiving end includes:
  • the present invention also provides a network system, the network system includes:
  • a sending end configured to send a detection message to the receiving end in the next dyeing cycle after sending the same-color dyeing message to the receiving end;
  • At least one pair of detection ends used for receiving the detection message sent by the sending end in the next dyeing cycle after sending the same color dyeing message to the receiving end; adding the message pass information to the detection message , wherein, when the message passing information is passed by the same-color dyed message sent by the detection end at the sending end, it is obtained based on the dyeing and quantity of the same-color dyed message detected by the detection end;
  • the message is sent out through an information detection message, so that the receiving end determines the packet loss situation of the same-color dyed message based on the detection message;
  • the receiving end is used to receive the detection message sent by the sending end in the next dyeing cycle after sending the same-color dyed message to the receiving end; based on the detection message, determine the packet loss of the same-color dyed message condition.
  • the present invention also provides a storage medium, where a network packet loss detection program is stored on the storage medium, and when the network packet loss detection program is executed by a processor, the aforementioned network packet loss detection program is implemented. The steps of the packet inspection method.
  • the invention provides a network packet loss detection method and a network system.
  • the detection message is sent by the sender to the receiver in the next dyeing cycle after sending the same-color dyed message, that is, the detection message and the same-color dyed message are sent to the receiver.
  • the message has the same source and the same destination address, and the two are transmitted in the same path.
  • the detection end that the same-color dyed message passes through is recorded based on the detected color and quantity of the same-color dyed message.
  • the packet loss situation of the same-color dyed packet in the transmission process can be accurately determined based on the packet pass information of all detection ends recorded on the detection packet.
  • FIG. 1 is a schematic structural diagram of a network system involved in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a network packet loss detection device involved in a solution according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a sending end of a first embodiment of a network packet loss detection method according to the present invention
  • FIG. 4 is a schematic flow chart of the detection end of the first embodiment of the network packet loss detection method according to the present invention.
  • FIG. 5 is a schematic flowchart of a receiving end of a first embodiment of a network packet loss detection method according to the present invention
  • FIG. 6 is a schematic flowchart of a first embodiment of a network packet loss detection method according to the present invention.
  • Fig. 7 is the schematic diagram of the sending timing of detection message
  • FIG. 8 is a detailed flowchart of step S100 of the first embodiment of the network packet loss detection method according to the present invention.
  • FIG. 9 is a schematic diagram of the format of the detection message involved in the solution according to the embodiment of the present invention.
  • FIG. 10 is a schematic flow chart of refinement of step S600 of the fifth embodiment of the user activity recognition method of the present invention.
  • FIG. 11 is a structural block diagram of a first embodiment of a network packet loss detection device according to the present invention.
  • FIG. 12 is a schematic structural diagram of a transmitting end of an embodiment of an apparatus for detecting network packet loss according to the present invention.
  • FIG. 13 is a structural block diagram of a second embodiment of a network packet loss detection apparatus according to the present invention.
  • FIG. 14 is a structural block diagram of a third embodiment of a network packet loss detection device according to the present invention.
  • 15 is a structural block diagram of an active mode network system embodiment of the present invention.
  • FIG. 16 is a structural block diagram of a passive mode network system embodiment of the present invention.
  • the modern packet network based on TCP/IP technology has been developed for many years.
  • the scale of the network is getting bigger and bigger, and the network services are becoming more and more abundant.
  • Various network service requirements lead to the coexistence of multiple network technologies on a physical network, and the types and number of network nodes are still increasing. Due to the demarcation of responsibility for service performance degradation, timely detection of network faults, and quality monitoring of contracted services, network operators need to accurately measure the transmission performance in the network. Accurately measure the packet loss status of the data flow to the network egress.
  • the IETF standards organization standardized a method for packet counting using A/B staining.
  • the time interval of the packets is in nanoseconds, while the delay of the control program implemented by software is in milliseconds, which is two orders of magnitude worse; in addition, different data links have different Rates, from 100Mbps to 100Gbps, also vary by orders of magnitude.
  • the above factors determine that the traditional network management interface or the SDN control interface cannot be used to collect information on dye counts.
  • Another method is to use the end-to-end active counting from the sender to the receiver, but this method can only realize one measurement, and cannot continuously and accurately measure the specific packet loss situation of a network end during the transmission process.
  • the network packet loss detection method provided in this embodiment also sends detection packets in addition to the dyed packet flow, and the detection packets can constitute a detection packet flow, and the detection packets are sent by the sender after sending the dyed packets of the same color In the next dyeing cycle, it is sent to the receiving end, that is, the detection message and the dyed message of the same color have the same source and the same destination address, and the two are transmitted in the same path.
  • the detected message passing information obtained by the dyeing and quantity of the same-color dyed message can accurately determine the loss of the same-color dyed message in the transmission process based on the message passing information of all detection terminals recorded on the detection message. package situation.
  • FIG. 1 it is a schematic diagram of a network system according to an embodiment of the present invention.
  • the system includes two terminal devices PC1 and PC2, and a pair of routing devices R1 and R2. If a dyed packet is sent from terminal PC1 to PC2, R1 is the ingress detection end, and R2 is the egress detection end to detect the network packet loss of the network between the routing devices R1 and R2. Wherein, when the terminal device PC1 sends the message stream, it is the sending end, and when the terminal device PC2 receives the message stream, it is the receiving end.
  • FIG. 1 does not constitute a limitation on the network packet loss measurement device, and may include more or less components than those shown in the figure, or combine some components, or arrange different components .
  • FIG. 2 is a schematic structural diagram of a recommended device for a method for detecting network packet loss in a hardware operating environment according to an embodiment of the present invention, such as a sending end, a detecting end, and a receiving end.
  • the device can be a user equipment (UE) such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a personal digital assistant (PDA), a tablet computer (PAD), a handheld device, an in-vehicle device, a wearable device, a computing A device or other processing device connected to a wireless modem, a mobile station (MS), etc.
  • UE user equipment
  • PDA personal digital assistant
  • PAD tablet computer
  • a device may be referred to as a user terminal, a portable terminal, a desktop terminal, or the like.
  • an apparatus includes: at least one processor 301, a memory 302, and a network packet loss detection program stored on the memory and executable on the processor, the network packet loss detection program configured to implement the aforementioned The steps of the network packet loss detection method.
  • the processor 301 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like.
  • the processor 301 can use at least one hardware form among DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), and PLA (Programmable Logic Array, programmable logic array).
  • the processor 301 may also include a main processor and a coprocessor.
  • the main processor is a processor used to process data in the wake-up state, also called CPU (Central Processing Unit, central processing unit); A low-power processor for processing data in a standby state.
  • the processor 301 may be integrated with a GPU (Graphics Processing Unit, image processor), and the GPU is used for rendering and drawing the content that needs to be displayed on the display screen.
  • GPU Graphics Processing Unit, image processor
  • Memory 302 may include one or more computer-readable storage media, which may be non-transitory. Memory 302 may also include high-speed random access memory, as well as non-volatile memory, such as one or more disk storage devices, flash storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 302 is used to store at least one instruction, and the at least one instruction is used to be executed by the processor 801 to implement the network loss provided by the method embodiments in this application. Packet detection method.
  • the terminal may also optionally include: a communication interface 303 and at least one peripheral device.
  • the processor 301, the memory 302 and the communication interface 303 may be connected through a bus or a signal line.
  • Various peripheral devices can be connected to the communication interface 303 through a bus, a signal line or a circuit board.
  • the peripheral device includes: at least one of a radio frequency circuit 304 , a display screen 305 and a power supply 306 .
  • the communication interface 303 may be used to connect at least one peripheral device related to I/O (Input/Output) to the processor 301 and the memory 302 .
  • the processor 301, the memory 302, and the communication interface 303 are integrated on the same chip or circuit board; in some other embodiments, any one or both of the processor 301, the memory 302, and the communication interface 303 are integrated It may be implemented on a separate chip or circuit board, which is not limited in this embodiment.
  • the radio frequency circuit 304 is used for receiving and transmitting RF (Radio Frequency, radio frequency) signals, also called electromagnetic signals.
  • the radio frequency circuit 304 communicates with the communication network and other communication devices through electromagnetic signals.
  • the radio frequency circuit 304 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals.
  • the radio frequency circuit 304 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and the like.
  • the radio frequency circuit 304 may communicate with other terminals through at least one wireless communication protocol.
  • the wireless communication protocols include, but are not limited to, metropolitan area networks, mobile communication networks of various generations (2G, 3G, 4G and 5G), wireless local area networks and/or WiFi (Wireless Fidelity, wireless fidelity) networks.
  • the radio frequency circuit 304 may further include a circuit related to NFC (Near Field Communication, short-range wireless communication), which is not limited in this application.
  • the display screen 305 is used for displaying UI (User Interface, user interface).
  • the UI can include graphics, text, icons, video, and any combination thereof.
  • the display screen 305 also has the ability to acquire touch signals on or above the surface of the display screen 305 .
  • the touch signal may be input to the processor 301 as a control signal for processing.
  • the display screen 305 may also be used to provide virtual buttons and/or virtual keyboards, also referred to as soft buttons and/or soft keyboards.
  • the display screen 305 may be one, which is the front panel of the electronic device; in other embodiments, the display screen 305 may be at least two, which are respectively disposed on different surfaces of the electronic device or in a folded design; In some embodiments, the display screen 305 may be a flexible display screen disposed on a curved or folded surface of the electronic device. Even, the display screen 305 can also be set as a non-rectangular irregular figure, that is, a special-shaped screen.
  • the display screen 305 can be made of materials such as LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, organic light emitting diode).
  • Power supply 306 is used to power various components in the electronic device.
  • the power source 306 may be alternating current, direct current, a primary battery, or a rechargeable battery.
  • the rechargeable battery can support wired charging or wireless charging.
  • the rechargeable battery can also be used to support fast charging technology.
  • FIG. 2 does not constitute a limitation on the network packet loss detection device, and may include more or less components than those shown in the figure, or combine some components, or arrange different components .
  • FIG. 3 is a schematic flowchart of a sending end of the first embodiment of the method for detecting network packet loss of the present invention.
  • the method for detecting network packet loss is used at a sending end of a network system, and the network system further includes a receiving end and at least a pair of detecting ends, and the method includes the following steps:
  • Step S100 in the next dyeing cycle after the completion of sending the same-color dyeing message to the receiving end, send a detection message to the receiving end, so that the receiving end determines the same-color dyeing based on the detection message Packet loss of packets.
  • the detection message includes message passing information obtained based on the coloring and quantity of the same-color dyed message detected by the detection end when the same-color dyed message passes through the detection end.
  • FIG. 4 is a schematic flowchart of the detection end of the first embodiment of the network packet loss detection method of the present invention.
  • the method for detecting network packet loss in this embodiment is used for at least one pair of detection ends in a network system, and the network system further includes a sending end and a receiving end, and the method includes the following steps:
  • Step S200 Receive the detection message sent by the sending end in the next dyeing cycle after the sending end of the dyeing message of the same color to the receiving end.
  • Step S300 adding message passing information to the detection message, wherein, when the message passing information is passed by the same-color dyed message sent by the detecting end at the sending end, based on the detected data by the detecting end.
  • the dyeing and quantity of the same-color dyed messages are obtained.
  • Step S400 sending a detection packet carrying the packet passing information, so that the receiving end determines the packet loss situation of the same-color dyed packet based on the detection packet.
  • FIG. 5 is a schematic flowchart of a receiving end of a first embodiment of a network packet loss detection method according to the present invention.
  • the method for detecting network packet loss is used at a receiving end of a network system, and the network system further includes a sending end and at least a pair of detecting ends, and the method includes the following steps:
  • Step S500 receiving the detection message sent by the sending end in the next dyeing cycle after sending the same-color dyeing message to the receiving end, wherein the detection message includes the same-color dyeing message passing through the detection end , the message passing information obtained based on the coloring and quantity of the same color dyed messages detected by the detection end.
  • Step S600 based on the detection message, determine the packet loss situation of the same-color dyed message.
  • FIG. 6 is a schematic flowchart of a first embodiment of a network packet loss detection method according to the present invention.
  • the method for detecting network packet loss in this embodiment is used in a network system, where the network system includes a sending end, a receiving end, and at least a pair of detecting ends, and the method includes the following steps:
  • Step S10 the sending end sends a detection message to the receiving end in the next dyeing cycle after the sending of the same-color dyeing message to the receiving end is completed.
  • Step S20 each detection end receives the detection message sent by the sending end in the next dyeing cycle after the sending end of the same color dyeing message to the receiving end.
  • Step S30 each detection end adds message passing information to the detection message, wherein, when the message passing information is passed by the same-color dyed message sent by the detection end at the sending end, based on the detection The dyeing and quantity of the same-color dyed messages detected by the terminal are obtained.
  • each detection end sends a detection message carrying the message passing information.
  • Step S50 the receiving end receives the detection message.
  • Step S60 the receiving end determines the packet loss situation of the same-color dyed message based on the detection message.
  • the colored packets may be network traffic actively sent by the sender, or may be passive network traffic received by the sender.
  • the packet flow changes the packet color every fixed number. For example, in a coloring period, all packet headers (such as the DSCP field) in the packet flow sent by the sender are marked as color A.
  • N for example, 500
  • the sender sends N (for example, 500) packets, it enters the next dyeing cycle.
  • the headers of all N packets in the packet stream sent by the sender are marked with color B. .
  • A-color packets and B-color packets are sent alternately.
  • the detection device in the network that is, the detection end, can detect and count the number of A-color packets and B-color packets arriving at the detection end. It is worth noting that when the detection end detects an increase in the number of A-color packets arriving at the detection end, that is, when the A-color packet count increases, the B-color packet count remains unchanged. Similarly, when the B color packet count increases, the A color packet count does not change.
  • the detection end stores the count of the corresponding A-color message in the A-color counter, and stores the corresponding B-color message count in the B-color counter.
  • the message passing information generated by each detection end includes the coloring of the same color dyed message, that is, A color or B color, and the corresponding A color counter value or B color counter value.
  • the detection packet sent by the sender and transmitted on the same path as the dyed packet that needs to detect the packet loss situation obtains the color A counter value and the color B counter value of each detection end. Specifically, during the dyeing period of the B color message, the sender sends a detection message to obtain the A color counter values of all detection ends on the A color message transmission path. The difference between the A color counter values of any pair of detection ends is It can be determined whether the network segment where any pair of detection ends is located has network packet loss, and the number of lost packets.
  • the sending end alternately sends A/B color dyeing messages to form a dyeing message stream, and at the same time, the sending end continuously sends detection messages for detecting the previous dyeing cycle to form a detection message stream, and the detection message
  • the flow records the passage of N same-color dyed packets of each segment through each detection end, so that the specific segment of the same-color dyed packet in the dyed packet flow can be accurately measured by the detection packet to which specific pair of detection ends. The packet loss occurred between, and the specific number of lost packets.
  • FIG. 7 is a schematic diagram of the sending timing of the detection message.
  • the sender In the first dyeing cycle, after sending N A-color packets, the sender enters the second dyeing cycle. During the second dyeing cycle, the sender will send N B-color packets. During the second dyeing cycle, the packet flow passing through the first detection end and the second detection end is the B color packet flow, and the number of A color packets detected by the first detection end and the second detection end will not increase.
  • the number of A-color packets detected by the second detection terminal at the second detection point that reaches the second detection point in the first dyeing cycle is N 2 , N 2 ⁇ N 1 , that is, the A-color packets of the second detection terminal are
  • the sending end sends a color A detection message to the receiving end, and the color A detection message and the color A message have the same source and the same destination address, and thus have the same transmission path.
  • the color A detection message reaches the first detection end
  • the first detection end continues to send the color A detection message to which the first detection end message passing information is added to the receiving end.
  • the color A detection message includes the message passing information of the first detection end and the message passing information of the second detection end.
  • the receiving end receives the A color detection packet, and the receiving end determines the packet loss situation between the first detection end and the second detection end of N A color packets sent in the first dyeing cycle based on the A color detection packet . For example, if N 2 ⁇ N 1 , it can be determined that between the first detection end and the second detection end, packet loss occurs in the N A-color packets.
  • the third dyeing cycle is entered, and the sending end sends N messages of color A.
  • the message flow through the first detection end and the second detection end is A. Color packets, the number of B color packets detected by the first detection end and the second detection end will not increase.
  • the first detection end detects at the first detection point arranged by it and reaches the detection point in the second dyeing cycle.
  • the number of B-color packets detected by the second detection terminal at the second detection point that reaches the second detection point in the second dyeing cycle is N 4 , N 4 ⁇ N 3 , that is, the A-color packets of the second detection terminal
  • the sending end sends a color B detection message to the receiving end, and the color B detection message and the color A message have the same source and the same destination address, and thus have the same transmission path.
  • the first detection end continues to send the B color detection packet to which the first detection end packet passing information is added to the receiving end.
  • the receiving end receives the B color detection packets, and the receiving end based on the B color detection packets, can determine the packet loss between the first detection end and the second detection end of N B color packets sent in the second dyeing cycle condition. For example, if N 4 ⁇ N 3 , it can be determined that between the first detection end and the second detection end, packet loss occurs in the N B color packets.
  • a network device may include multiple network segments, and the entrance and the exit of each network segment are respectively provided with a detection terminal, thereby forming a pair of detection terminals.
  • the sending end continuously sends color A detection packets and B color detection packets alternately, so that which segment of the coloring packet of color A in the coloring packet flow sent by the sending end can be continuously and accurately determined Indicates the network packet loss that occurs in the network segment between the two detection ends where the message or the B-color-dyed message is located.
  • the network packet loss detection method provided in this embodiment also sends detection packets in addition to the dyed packet flow, and the detection packets can constitute a detection packet flow, and the detection
  • the message is sent by the sender to the receiver in the next dyeing cycle after sending the same-color dyed message, that is, the detection message and the same-color dyed message have the same source and the same destination address, and the two are transmitted on the same path.
  • step S100 includes:
  • Step S100' in the next dyeing cycle after the completion of sending the same-color dyeing message to the receiving end, send a plurality of detection messages to the receiving end.
  • the receiving end may send multiple detection packets in the next dyeing cycle.
  • the sending end in the second dyeing cycle of a specific implementation solution, sends two A color detection packets continuously to the receiving end. Or, in the second dyeing period, the sending end sends 2 color A detection messages at intervals of n B color messages to the receiving end.
  • step S100 the step of sending a detection message to the receiving end in the next dyeing cycle after the sending of the same-color dyeing message to the receiving end is completed, includes:
  • Step S101 after sending the same-color dyeing message to the receiving end, send a detection message trigger signal.
  • the above step is to send a detection message trigger signal after judging that the transmission of the same-color dyed message is completed.
  • the network packet loss detection method further includes the following steps:
  • the above steps are the normal steps of the sending end for sending packets, such as continuously and alternately sending N A-color packets and B-color packets.
  • the sending end when sending the same-color dyed messages, the sending end needs to record the number of the same-color dyed messages sent by the sending end, and switch to dyeing after the number of sent same-color dyed messages reaches a certain value. That is, the packet flow changes the packet color every fixed number.
  • step S101 can be executed, and a detection message trigger signal is sent.
  • the network system where the sender is located is configured to change the coloring every 500 coloring packets.
  • the first preset threshold is 500.
  • the sender sends a color-colored message, and the sender records the number of A-color-colored messages N.
  • Step S102 in the next dyeing cycle, send a detection message to the receiving end based on the detection message trigger signal.
  • the corresponding internal module of the sender after receiving the detection message trigger signal, the corresponding internal module of the sender sends the detection message as the same receiver as the dyed message.
  • step S102 in the next dyeing cycle, the step of sending a detection packet to the receiving end based on the detection packet trigger signal includes:
  • the sending end still records the number of dyeing messages sent in the dyeing cycle, so as to determine when to send a detection message trigger signal.
  • the network system where the sender is located is configured to change the coloring every 500 coloring packets.
  • the first preset threshold is 500.
  • the sender sends a color-colored message, and the sender records the number of A-color-colored messages N.
  • Message trigger signal Based on the detection packet signal, the sending end records the second sending number of the B-color dyed packets sent by the sending end. It is judged whether the second number of issued documents is equal to the second preset threshold.
  • the second preset threshold is a natural number less than or equal to the first preset threshold.
  • the second preset threshold is equal to 1/2 of the first preset threshold. For example, when the first preset threshold is 500, the second preset threshold is 250.
  • the first preset threshold is 500
  • the second preset threshold is 250. If the second number of sent messages increases to 250, a detection message sending signal is sent.
  • the second preset threshold is used to determine the sending timing of detection packets, so that only one detection packet is sent in each dyeing cycle, and the transmission frequency of detection packets is the same as that of dyed packets.
  • the dyeing switching frequency is the same.
  • the second preset threshold is 1/2 of the first preset threshold, it means that the detection message is sent out in the middle of each dyeing cycle, thereby avoiding sending detection messages at the boundary of the dyeing transformation, that is, preventing the detection message from being sent due to the dyeing transformation.
  • the out-of-order arrival of the dyed packets at the boundary to the detection end affects the packet passing information of the detection end, so as to ensure that the detection unit can obtain relatively accurate packet passing information.
  • the sender sends 500 A-color packets and then changes the coloring, and then sends 500 B-color packets, but the last 10 A-color packets and the first 10 B-color packets
  • the 20 dyed packets pass through the detection end out of sequence. For example, after 4 B color packets arrive at the detection end, the 10 A color dyed packets that should have arrived arrive at the detection end.
  • the A color detection message is obtained.
  • a fourth embodiment of the network packet loss detection method of the present invention is proposed.
  • Many detection terminals such as modern switches/routing devices support SDN flow table operations. For example, they generally support arbitrary extraction of M fields from the first N bytes to form a matching operation. N is generally 128 or more and M is 32 or more. Therefore, step S300 can be implemented by the detection end based on the flow table operation.
  • the detection message adopts UDP (User Datagram Protocol, User Datagram Protocol) protocol.
  • UDP User Datagram Protocol, User Datagram Protocol
  • the detection message includes:
  • UDP header where the UDP header includes the packet type of the detection packet.
  • a flow table opcode unit including a plurality of opcodes.
  • a data unit the data unit is set in a one-to-one correspondence with the detection end, and the data unit is used to store the message passing information of the corresponding detection end.
  • FIG. 9 is a schematic diagram of the format of the detection message.
  • the detection packet includes a UDP header
  • the UDP header includes a packet type of the detection packet.
  • the UDP port number indicates that the packet is a detection packet.
  • the detection end can identify the UDP header through the flow table and determine that the packet is a detection packet.
  • the flow table operation code unit includes an operation code, and the detection terminal performs the corresponding operation by matching the operation code.
  • the opcode of the flow table opcode unit is any of the following table.
  • the detection side installation configuration has the count table shown in the following table:
  • the detection terminal is also installed and configured with the extraction table shown in the following table.
  • the first detection end when the first detection end receives a color A detection packet, it matches the UDP port number of the A color detection packet, identifies the packet as a color A detection packet, and matches the corresponding color detection packet.
  • Opcode 0x01 execute the action Get A color counter (get the A color counter value), and copy or add the A color counter value to the data unit of the A color detection message.
  • each detection message includes a plurality of data units, 15 optional, and each data unit is used to store message passing information, for example, may include the following information: detection end ID, A color counter value, B color counter value.
  • the operation codes of the detection message are defined as Get (acquisition operation) and Clear (clear operation), and there are operation codes for color A and color B respectively, so as to read or clear the counters of color A and color B
  • Get acquisition operation
  • Clear clearing
  • step S300 the step of adding message pass information to the detection message includes the following steps:
  • Step S301 Obtain the operation code of the detection message.
  • the detection end matches the operation code in the flow table operation code unit of the detection packet.
  • Step S302 extracting the message passing information based on the operation code.
  • the detection end matches the corresponding operation code, and extracts the packet passing information stored at the detection end. For example, the ID number of the detection terminal, the corresponding A color counter value or the B color counter value of the corresponding operation code.
  • Step S303 adding the message passing information to the detection message.
  • the detection end copies or adds messages such as the ID number of the detection end, the A color counter value or the B color counter value of the corresponding corresponding opcode to the detection message through information, so that the detection message is in the same color dyeing
  • the counts of the detected dyed packets of all detection ends can be collected and obtained, and finally sent to the receiving end, so that the packet loss of the dyed packets in this circulation path can be continuously detected.
  • step S600 based on the detection message, determines the packet loss situation of the same-color dyed message, including:
  • Step S601 based on the detection message, extract at least two message passing information.
  • each segment of the network includes an ingress detection terminal set at the network entrance and an exit detection terminal set at the network exit. That is, the network system includes at least one pair of detection terminals.
  • the receiving end can extract from the data unit of the detection packet all the packet passing information copied by the detection terminal through which the detection packet passes, that is, at least two packet passing information.
  • Step S602 based on at least two of the message passing information and a preset number of messages sent in a dyeing period of the same-color dyed message, obtain packet loss data information of the same-color dyed message.
  • the receiving end after receiving the detection packet, the receiving end can determine the packet loss situation of the same-color dyed packets detected by the detection packet according to the packet passing information in the detection packet. And because the detection message and the same-color dyed message are transmitted on the same path, the detection message stores the message passing information of all the detection ends, and the receiving end can determine the loss of the same-color dyed message based on the detection message. .
  • the network system includes a sending end, a receiving end and a pair of detecting ends, namely an ingress detecting end, a first detecting end R1 and an egress detecting end, and a second detecting end R2.
  • the preset number of sent messages of the same color dyed messages in a dyeing cycle is N.
  • the preset number of sent messages of the same-color dyed message in a dyeing period is N, so it can be calculated that the instantaneous packet loss rate of the A-color dyed message in the network segment is M/N.
  • the preset number of A-color dyed messages in a dyeing cycle is N.
  • the packet loss rate of the A-color dyed packet in each network segment is M k /N.
  • the cumulative packet loss rate of the color A-colored packets is:
  • the detection end not only detects the ingress and egress of the dyed packet flow, but also processes other service packet streams.
  • the A color counter value and the B color counter value in the packet pass information of the detection end also include The number of colored packets detected by the detection end that reach the detection end and the number of colored packets of other service packets.
  • step S600 based on the detection message, determines the packet loss situation of the same-color dyed message, and the adaptive adjustment is as follows:
  • Step S600' based on the detection packet and the previous homochromatic detection packet that is continuous with the detection packet, determine the packet loss situation of the same-color dyed packet.
  • the receiving end can extract the packet passing information copied by all detection terminals through which the two detection packets pass from the data units of the two detection packets. Then, make a difference between the counter values of the same detection end in the two detection packets, so as to calculate the number of the same-color dyed packets passing through the detection end in the dyeing cycle, that is, in the dyeing cycle, enter a certain network
  • the packet loss on the network can be determined by the difference between the number of packets at the ingress detection end of the segment and the number of packets at the egress detection end.
  • the inlet detection end the first detection end R1 and the outlet detection end: the second detection end R2.
  • the present invention provides a first embodiment of a network packet loss detection device, the device is applied to the sending end, and the network packet loss detection device is used for the next coloring after sending the same color coloring message to the receiving end. During the period, a detection message is sent to the receiving end.
  • FIG. 11 is a structural block diagram of the first embodiment of the apparatus.
  • the network packet loss detection device includes:
  • the signal triggering module 101 is configured to send a detection packet trigger signal after sending the same-color dyeing packet to the receiving end.
  • the detection packet sending module 102 is configured to send a detection packet to the receiving end based on the detection packet trigger signal in the next dyeing cycle.
  • the device for detecting network packet loss further includes:
  • a dyeing module 103 configured to send a dyeing message of the same color to the receiving end;
  • the dyeing counting module 104 is configured to record the number of sent messages of the same color dyed messages sent by the sending end, and determine whether the number of sent messages is equal to a first preset threshold; if the number of sent messages is equal to the first preset threshold, Then enter the next dyeing cycle.
  • the device for detecting network packet loss further includes:
  • a data stream generator configured to generate the message stream and send the message stream to the dyeing module
  • a data stream filter configured to receive the packet stream and send the packet stream to the coloring module.
  • the data generator corresponds to the active measurement mode.
  • the sender will actively colorize and send a specific packet stream, that is, configure the source and destination addresses, port numbers and other information of the colored packet stream.
  • the data flow filter corresponds to the passive measurement mode. In this mode, the data flow filter selects a specific packet flow in the network and sends the packet flow to the coloring module.
  • the detection message sending module 102 includes:
  • the counting module is configured to, in the next dyeing cycle, based on the detection message trigger signal, record the second sending number of the second same-color dyeing message sent by the sending end in the next dyeing cycle, and determine the Whether the second number of sent messages is equal to a second preset threshold; if the second number of sent messages is equal to the second preset threshold, a detection message sending signal is sent;
  • a detection message generator configured to send a detection message to the receiving end based on the detection message sending signal.
  • the sending timing of the detection message is determined by the counting module.
  • the detection message should be sent in the next dyeing cycle after the sending end sends the same color dyeing message to the receiving end, and preferably in the middle of the next dyeing cycle, and the dyeing cycle is sent by sending a fixed message.
  • FIG. 2 is a schematic structural diagram of a specific embodiment of a transmitter.
  • the sending end includes a dyeing module, a data flow generator or a data flow filter, an N counting module, an N/2 counting module, and a detection message generator.
  • the N counting module always counts from 1 to N. When the count reaches N, it sends a detection message trigger signal and a dyeing signal to the dyeing module and the N/2 counting module, and then starts counting from 1 again.
  • the N count module increments each count and is controlled by the dye module.
  • N is a natural number greater than 1. It is easy to understand that the N counting module integrates the staining counting module 104 and the signal triggering module 101 .
  • the dyeing module receives the data packets sent from the data flow generator or the data flow filter, and dyes the data packets and sends them out. Every time the dyeing module dyes and sends a message, it will notify the N counting module and the N/2 counting module to increase the count value by 1.
  • the N/2 counting module receives the detection message trigger signal of the N counting module, and sets the internal counter to 0. At the same time, the signal from the dyeing module is received, and the internal counter is incremented by 1. When the N/2 counting module reaches the preset second threshold, it will send a detection message sending signal to the detection message generator.
  • the N/2 counting module is the counting module.
  • the detection message generator sends a detection message every time it receives a detection message sending signal.
  • the detection message has been set through the management configuration in advance, and the corresponding A color counter value and B color counter value are both zero.
  • the network packet loss detection device includes:
  • the detection and counting module 201 is configured to obtain message passing information based on the dyeing and quantity of the same-color dyed messages detected by the detection end when the same-color dyed message sent by the sending end passes through the detection end;
  • the first receiving module 202 is configured to receive the detection message sent by the sending end in the next dyeing cycle after sending the same-color dyeing message to the receiving end;
  • An adding module 203 is configured to add the message pass information to the detection message
  • the first sending module 204 is configured to send a detection packet carrying the packet passing information, so that the receiving end determines the packet loss situation of the same-color dyed packet based on the detection packet.
  • the present invention provides a third embodiment of a network packet loss detection device, which is applied to a receiving end, and the device includes:
  • the second receiving module 401 is configured to receive a detection message sent by the sending end in the next dyeing cycle after sending the same-color dyeing message to the receiving end, wherein the detection message includes the same-color dyeing message When passing through the detection end, the message passing information is obtained based on the coloring and quantity of the same-color dyed messages detected by the detection end.
  • the determining module 402 is configured to determine the packet loss situation of the same-color dyed message based on the detection message.
  • the present invention provides an embodiment of a network system, the network system includes:
  • the sending end is configured to send a detection message to the receiving end in the next dyeing cycle after sending the same-color dyeing message to the receiving end.
  • At least one pair of detection ends used for receiving the detection message sent by the sending end in the next dyeing cycle after sending the same color dyeing message to the receiving end; adding the message pass information to the detection message , wherein, when the message passing information is passed by the same-color dyed message sent by the detection end at the sending end, it is obtained based on the dyeing and quantity of the same-color dyed message detected by the detection end; The message is sent through an information detection message, so that the receiving end determines the packet loss situation of the same-color dyed message based on the detection message.
  • the receiving end is used to receive the detection message sent by the sending end in the next dyeing cycle after sending the same-color dyed message to the receiving end; based on the detection message, determine the packet loss of the same-color dyed message condition.
  • the network system provided by this embodiment also sends detection packets in addition to the dyed packet stream, and the detection packets can constitute a detection packet stream.
  • the message is sent by the sender to the receiver in the next dyeing cycle after sending the same-color dyed message, that is, the detection message and the same-color dyed message have the same source and the same destination address, and the two are transmitted on the same path, and the detection message is being transmitted.
  • composition of the network system is further described below with reference to a specific embodiment.
  • FIG. 15 is a structural block diagram of a network system in an active mode.
  • the sending end includes a dyeing module, a data flow generator, an N counting module, an N/2 counting module, and a detection message generator.
  • the N counting module always counts from 1 to N. When the count reaches N, it sends a detection message trigger signal and a dyeing signal to the dyeing module and the N/2 counting module, and then starts counting from 1 again.
  • the N count module increments each count and is controlled by the dye module.
  • N is a natural number greater than 1. It is easy to understand that the N counting module integrates the staining counting module 104 and the signal triggering module 101 .
  • the dyeing module receives the data packets sent from the data stream generator, and dyes the data packets and sends them out. Each time the dyeing module dyes and sends a message, it will notify the N counting module and the N/2 counting module to increase the count value by 1.
  • the N/2 counting module receives the detection message trigger signal of the N counting module, and sets the internal counter to 0. At the same time, the signal from the dyeing module is received, and the internal counter is incremented by 1. When the N/2 counting module reaches the preset second threshold, it will send a detection message sending signal to the detection message generator.
  • the N/2 counting module is the counting module.
  • the detection message generator sends a detection message every time it receives a detection message sending signal.
  • the detection message has been set through the management configuration in advance, and the corresponding A color counter value and B color counter value are both zero.
  • the ingress detection terminal R1 and the outlet detection terminal R2 are set in pairs, and are respectively set at the ingress and egress of the network to be tested.
  • the ingress detection end R1 and the outlet detection end R2 both have a detection counting module 201, which is used for coloring the same color dyed message detected by the detection end when the same color dyed message sent by the sending end passes through the detection end. With the number, get the message passing information.
  • the detection counting module 201 includes A counter (A color counter) and B counter (B color counter).
  • It also includes a receiving end, the receiving end is used for receiving the coloring message stream formed by the A color message stream and the B color message stream alternately, and the detection message stream formed by the A color detection message and the B color detection message alternately.
  • the detection packet flow or the A-color detection packets and B-color detection packets in the detection packet flow are given to determine the packet loss situation of the dyed packet flow in the network under test.
  • composition of the network system is further described below with reference to a specific implementation.
  • FIG. 16 is a structural block diagram of a network system in passive mode.
  • the network structure also includes a passive mode transmitting end, an ingress detecting end R1, an egress detecting end R2, and a receiving end.
  • the difference between the sender in passive mode and the sender in active mode is that the sender in passive mode does not actively generate dyed traffic, but dyes the existing network traffic, and then also sends detection packets.
  • the sender in passive mode filters the original data stream of the existing network through the data stream filter and sends it to the coloring module, and the coloring module outputs the coloring packet stream to the ingress detection end R1.
  • Other modules, such as the ingress detection end R1, the egress detection end R2, and the receiving end are the same as the transmitting end of the active mode disclosed in the foregoing embodiments, and will not be repeated here.
  • the sender in passive mode since it needs to intercept the network data stream, it can be deployed as a module inside a network device.
  • the sending end in passive mode may be deployed in the same network device as the ingress detecting end R1.
  • the sending end of the passive mode is connected to the network device in a bypass manner to facilitate traffic diversion.
  • an embodiment of the present invention also provides a storage medium, where a network packet loss detection program is stored on the storage medium, and when the network packet loss measurement program is executed by a processor, the network packet loss detection method as described above is implemented. step. Therefore, it will not be repeated here.
  • the description of the beneficial effects of using the same method will not be repeated.
  • program instructions may be deployed to execute on one computing device, or on multiple computing devices located at one site, or alternatively, on multiple computing devices distributed across multiple sites and interconnected by a communications network execute on.
  • the above program can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods.
  • the above-mentioned storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM) or the like.
  • the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be A physical unit, which can be located in one place or distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative effort.
  • U disk mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or CD, etc., including several instructions to make a computer device (which can be a personal computer, A server, or a network device, etc.) executes the methods described in the various embodiments of the present invention.
  • a computer device which can be a personal computer, A server, or a network device, etc.

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Abstract

La présente invention concerne un procédé de détection de perte de paquets sur un réseau, qui est utilisé au niveau d'une extrémité de transmission d'un système de réseau, le système de réseau comprenant en outre une extrémité de réception et au moins une paire d'extrémités de détection. Le procédé consiste : à transmettre des paquets de détection à une extrémité de réception dans le cycle de coloration suivant après que des paquets colorés d'une même couleur sont transmis à l'extrémité de réception, de sorte que l'extrémité de réception détermine la perte de paquets des paquets colorés d'une même couleur sur la base des paquets de détection, les paquets de détection comprenant des informations de passage de paquets obtenues sur la base de la couleur et de la quantité des paquets colorés d'une même couleur détectés par les extrémités de détection lorsque les paquets colorés d'une même couleur passent à travers les extrémités de détection. Est également divulgué dans la présente invention un appareil de détection de perte de paquets sur un réseau et un système de réseau. La présente invention permet d'obtenir une détection précise de perte de paquets sur un réseau de flux de paquets au moyen des paquets de détection.
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