CN114500329A - Method and device for detecting lost frame - Google Patents

Abstract

The present application discloses a method and device for detecting frame loss, belonging to the field of communications. The method for detecting frame loss is performed by a network device having multiple interfaces, and the method includes: acquiring a target frame to be transmitted by a target interface in the multiple interfaces; determining whether there is a designated frame in the frame header of the target frame frame header mark; in the case where the specified frame header mark does not exist in the frame header of the target frame, determine whether the time during which the target frame is not transmitted through the target port is greater than a first threshold through a clock counter; It is determined that a frame loss is detected when the target port does not transmit the target frame for a time greater than a first threshold.

Description

Method and apparatus for detecting frame loss

technical field

The present application belongs to the field of communications, and in particular relates to a method and device for detecting frame loss.

Background technique

It is well known that good network synchronization performance has a great impact on user experience. Due to the influence of transmission conditions, frame loss sometimes occurs during data transmission.

In the related art, in the process of detecting frame loss, various resources need to be invoked to monitor frame loss, and this method of frame loss detection has the problem of occupying many resources.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a method and apparatus for detecting frame loss, which can solve the problem that the method for detecting frame loss in the related art uses more resources.

In a first aspect, an embodiment of the present application provides a method for detecting frame loss, which is performed by a network device having multiple interfaces, and the method includes:

obtaining a target frame to be transmitted by a target interface in the plurality of interfaces;

Determine whether there is a specified frame header mark in the frame header of the target frame;

In the case that the specified frame header mark does not exist in the frame header of the target frame, determine whether the time during which the target frame is not transmitted through the target port is greater than a first threshold through a clock counter;

In a case where it is determined that the time for which the target frame is not transmitted through the target port is greater than a first threshold, it is determined that a frame loss is detected.

In a second aspect, an embodiment of the present application provides an apparatus for detecting frame loss, the apparatus comprising:

an acquisition module for acquiring the target frame to be transmitted by the target interface in the multiple interfaces;

The processing module is used to determine whether there is a specified frame header mark in the frame header of the target frame; in the case where the specified frame header mark does not exist in the frame header of the target frame, it is determined by a clock counter to pass the target frame. Whether the time when the port does not transmit the target frame is greater than a first threshold; in the case where it is determined that the time when the target frame is not transmitted through the target port is greater than the first threshold, it is determined that a frame loss is detected.

In a third aspect, an embodiment of the present application provides an electronic device, the electronic device includes a processor and a memory, the memory stores a program or an instruction that runs on the processor, and the program or instruction is executed by the processor When executed, the steps of the method as described in the first aspect are implemented.

In a fourth aspect, an embodiment of the present application provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented .

In a fifth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, and implement the first aspect the method described.

In a sixth aspect, an embodiment of the present application provides a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the method according to the first aspect.

In this embodiment of the present application, acquire a target frame to be transmitted by a target interface among the multiple interfaces; determine whether a specified frame header mark exists in the frame header of the target frame; In the presence of the specified frame header mark, it is determined by a clock counter whether the time when the target frame is not transmitted through the target port is greater than a first threshold; when it is determined that the time when the target frame is not transmitted through the target port is greater than In the case of the first threshold, it is determined that a dropped frame is detected. In this way, whether the frame is lost can be directly determined through the clock counter. Compared with the traditional frame loss detection method, fewer resources are used, so the problem of the related art method of detecting lost frame using more resources can be solved.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

1 is a flowchart of a method for detecting frame loss provided by an embodiment of the present application;

2 is a flowchart of another method for detecting frame loss provided by an embodiment of the present application;

3 is a flowchart of another method for detecting frame loss provided by an embodiment of the present application;

4 is a flowchart of another method for detecting frame loss provided by an embodiment of the present application;

5 is a structural block diagram of a device for detecting frame loss provided by the present application;

FIG. 6 is a structural block diagram of a network device provided by the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of this application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between "first", "second", etc. The objects are usually of one type, and the number of objects is not limited. For example, the first object may be one or more than one. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

The method for detecting frame loss provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

FIG. 1 is a flowchart of a method for detecting frame loss provided by an embodiment of the present application. Referring to FIG. 1 , the method for detecting frame loss provided by the embodiment of the present application may be executed by a network device having multiple interfaces. In this embodiment of the present application, the network device having the multiple interfaces may be devices such as switches, routers, and optical modems. The multiple ports may be 4 ports, 8 ports, 16 ports, and the like.

The method for detecting frame loss provided by the embodiment of the present application may include:

Step 110: Acquire a target frame to be transmitted by a target interface among the multiple interfaces.

In this step, the multiple interfaces may be interfaces on the network device that can be inserted into optical fibers.

The target frame in the embodiment of the present application may be a data frame received by the target interface, and the target frame may be the data frame targeted by the method for detecting frame loss provided by the embodiment of the present application.

After this step 110, the time recorded by the clock table counter of each time the target frame is received may also be stored.

Step 120: Determine whether a specified frame header mark exists in the frame header of the target frame.

In this step, the target frame is data in transmission, and the specified frame header mark may be F628 (hexadecimal). Certainly, in this embodiment of the present application, the specified frame header mark may also be other self-defined marks. These custom tokens can be binary, decimal or hexadecimal.

Step 130: In the case that the specified frame header mark does not exist in the frame header of the target frame, determine whether the time during which the target frame is not transmitted through the target port is greater than a first threshold through a clock counter.

In this embodiment of the present application, if the specified frame header mark does not exist in the frame header of the target frame, the current time may be recorded. At the same time, the time when the target frame is received can be recorded every time the target frame is received. In this way, in the case where the specified frame header mark does not exist in the frame header of the target frame, the recorded current time and the last recorded time when the target frame was received can be made difference, and the absolute value of this difference can be calculated as the difference. value as the time when the target frame was not transmitted through the target port. Furthermore, the relationship between the time when the target frame is not transmitted through the target port and the first threshold may be further calculated.

In the case that the network device has stored the time recorded by the clock counter each time the target frame is received, this step 130 may include: determining the time when the target frame is not transmitted through the target port through the clock counter Whether it is greater than the first threshold includes: obtaining the current time through the clock counter; obtaining the specified time when the target port received the target frame last time; determining whether the difference between the current time and the specified time is greater than the first threshold. In this way, the time when the target port does not transmit the target frame can be conveniently obtained, and the time can be compared with the first threshold. Further, it may be helpful to subsequently determine whether to drop frames based on this.

Step 140 , when it is determined that the time when the target frame is not transmitted through the target port is greater than a first threshold, determine that a frame loss is detected.

In this embodiment of the present application, it is determined that a frame loss is detected when it is determined that the time during which the target frame is not transmitted through the target port is greater than a first threshold. The first threshold can be set as required, for example, the first threshold is 3 frames, 4 frames, or 5 frames. That is, in a case where it is determined that the time during which the target frame is not transmitted through the target port is greater than a first threshold, it is determined that a frame loss is detected. The smaller the first threshold is, the shorter the time for detecting frame loss is, and the larger the first threshold is, the longer the time for detecting frame loss is.

In this embodiment of the present application, the timepiece counter may not be affected by the outside world, and may be triggered by a quartz crystal oscillator to count time according to a set period. For example, if a 640MHz (megahertz) watch counter is used, the 640MHz (megahertz) = 640*1000KHZ (kilohertz), that is, the number of times the vibration is completed in a unit time, the unit is Hertz (1 Hz = 1 time/second) ; Using a clock counter of 640MHz (megahertz), first count an 8-bit binary clock counter from 0 to 511, denoted as count512[8:0], then a period of the clock counter count512[8:0] is 0.8 μs (microseconds), the calculation process is 512/(640MHz)=0.8μs. Then count a 13-bit binary clock counter from 0 to 9999 with a period of 8ms (milliseconds), denoted as count8ms[13:0], the clock counter count8ms[13:0] is in the clock counter count512[8 When :0] is equal to 511, 1 is accumulated, and one cycle of the clock counter cnt8ms[13:0] is 8ms (milliseconds). The time for the target port to transmit the target frame is timed by the clock counter count8ms[13:0].

In an embodiment of the present application, a clock counter of other frequencies may also be used, for example, a clock counter of 100 MHz (megahertz) is used, and the frequency of the clock counter of 100 MHz (megahertz) is lower than the clock frequency of 640 MHz (megahertz). The lower the frequency of the clock counter, the larger the counter, which means the longer the time period of the clock counter.

In this embodiment of the present application, frame loss may mean frame loss. If the frame information is not received in the communication or the frame information is not synchronized, it can be regarded as a lost frame.

In this embodiment of the present application, acquire a target frame to be transmitted by a target interface among the multiple interfaces; determine whether a specified frame header mark exists in the frame header of the target frame; In the presence of the specified frame header mark, determine whether the time when the target frame is not transmitted through the target port is greater than a first threshold through a clock counter; when it is determined that the time when the target frame is not transmitted through the target port is greater than In the case of the first threshold, it is determined that a dropped frame is detected. In this way, whether the frame is lost can be directly determined through the clock counter. Compared with the traditional frame loss detection method, fewer resources are used, so the problem of the related art method of detecting lost frame using more resources can be solved.

It should also be noted that when the target port detects that no frame is lost, the transmission of the target frame may be transmitted through the working path channel, and the protection path channel may be in a closed state. When the target port detects frame loss, the transmission channel of the target frame can be switched from the working path channel to the protection path channel.

It should also be noted that the network devices of the multiple interfaces can run after being plugged in. When the network device is powered on, the clock timer can provide various times for the target frame, such as the time at which the target port transmits the target frame.

FIG. 2 is a flowchart of another method for detecting frame loss provided by an embodiment of the present application. Referring to FIG. 2 , another method for detecting frame loss provided by an embodiment of the present application may be performed by a network device having multiple interfaces, and may include:

Step 210: Acquire a target frame to be transmitted by a target interface among the multiple interfaces.

In this step, the multiple interfaces may be the interfaces on the network device into which optical fibers are inserted.

Step 220: Determine whether a specified frame header mark exists in the frame header of the target frame.

In this step, the target frame is data in transmission, and the specified frame header mark may be F628 (hexadecimal).

Step 230: In the case that the specified frame header mark does not exist in the frame header of the target frame, determine whether the time during which the target frame is not transmitted through the target port is greater than a first threshold through a clock counter.

In this step, the clock counter is not affected by the outside world, and can be triggered by a quartz crystal oscillator to time the clock according to a set period. For example, using a 640MHz (megahertz) watch counter can obtain the time when the target port is not transmitting the target frame.

Step 240, when it is determined that the time for which the target frame is not transmitted through the target port is greater than a first threshold, determine that a frame loss is detected.

In this embodiment of the present application, if the specified frame header mark does not exist in the frame header of the target frame, the current time may be recorded. At the same time, the time when the target frame is received can be recorded every time the target frame is received. In this way, in the case where the specified frame header mark does not exist in the frame header of the target frame, the recorded current time and the last recorded time when the target frame was received can be made difference, and the absolute value of this difference can be calculated as the difference. value as the time when the target frame was not transmitted through the target port. Furthermore, the relationship between the time when the target frame is not transmitted through the target port and the first threshold may be further calculated.

Step 250 , after it is determined that the frame loss is detected, in the case of receiving the data frame, insert a designated identifier into the data frame, where the designated identifier is used to indicate the frame loss state.

In this step, the specified identifier may be various identifiers used to indicate the frame loss status, such as 1 or 0. Taking the designated identifier as 1 as an example, all designated identifiers of 1 may be inserted into the data frame received by the target port, which may indicate that the frame is in a lost frame state.

It should be understood that the data frame of the present application may be the target frame mentioned above.

In the method for detecting frame loss provided by the embodiment of the present application, after it is determined that the frame loss is detected, in the case of receiving a data frame, a specified identifier is inserted into the data frame, and the specified identifier is used to indicate the frame loss. state. In this way, after it is determined that the frame loss is detected, a designated identifier for indicating the frame loss state can be inserted into the data frame, and the receiver of the subsequent data frame can know that the frame loss state is in accordance with this designated identifier, which is more conducive to the follow-up. operate.

FIG. 3 is a flowchart of another method for detecting frame loss provided by an embodiment of the present application. Referring to FIG. 3 , the method for detecting frame loss provided by this embodiment of the present application may be executed by a network device with multiple interfaces. The method for detecting frame loss provided by the embodiment of the present application may include:

Step 310, acquiring the target frame to be transmitted by the target interface in the multiple interfaces;

Step 320, determine whether there is a designated frame header mark in the frame header of the target frame;

Step 330, in the case where the specified frame header mark exists in the frame header of the target frame, determine whether the frame header of the target frame is correct;

In this step, the frame header of the target frame may be F628 (hexadecimal).

Step 340, in the case that the frame header of the target frame is wrong, add 1 to the value of the frame error counter;

Step 350, when the value of the frame error counter reaches a preset value, determine that a frame loss is detected.

In this step, if the value of the frame header error counter does not reach the preset value, it is determined that no frame loss is detected. The preset value can be set as required, for example, the preset value is 3 frames, 4 frames, or 5 frames. That is, when the value of the frame header error counter reaches a preset value, it is determined that a frame loss is detected. The smaller the preset value is, the shorter the time taken to detect the frame loss is, and the larger the preset value is, the longer the time to detect the frame loss is.

In the embodiment of the present application, in the case that the specified frame header mark exists in the frame header of the target frame, in the case of an error in the frame header of the target frame, the value of the frame error counter is increased by 1, When the value of the frame error counter reaches a preset value, it is determined that a frame loss is detected. In this way of detecting frame loss, in the case where the specified frame header mark exists in the frame header of the target frame, the number of errors in the frame header of the target frame is counted, and when the number of errors reaches a certain level. In the case of the number of times, it is determined that the frame is dropped. In this way, the method of frame loss detection can be applied to the situation where the specified frame header mark exists in the frame header of the target frame, and the detection range of frame loss can be expanded to avoid failure to detect frame loss in some cases where frame loss may occur. frame problem.

In an embodiment of the present application, optionally, after step 330 in FIG. 3 , that is, in the case where the specified frame header mark exists in the frame header of the target frame, the frame of the target frame can also be judged After whether the header is correct, if the frame header of the target frame is correct, the method for detecting frame loss provided by the embodiment of the present application may further include: if the frame header of the target frame is correct, setting the frame error counter The value of is set to 0, and it is determined that no frame loss is detected.

In the embodiment of the present application, in the case that the specified frame header mark exists in the frame header of the target frame, it is judged whether the frame header of the target frame is correct; in the case that the frame header of the target frame is correct , the value of the frame error counter is set to 0, and it is determined that no frame loss is detected. In this way, in the case that the frame header of the target frame is correct, by setting the value of the frame error counter to 0, it is convenient to use the frame error counter to restart the timing in the case of missing frames in the future, so as to ensure the missing frame. Accuracy of frame statistics.

FIG. 4 is a flowchart of another method for detecting frame loss provided by an embodiment of the present application. Referring to FIG. 4, another method for detecting frame loss may include:

Step 410: Acquire a target frame to be transmitted by a target interface among the multiple interfaces.

Step 420: Store the time recorded by the clock table counter each time the target frame is received.

Step 430: Determine whether a specified frame header mark exists in the frame header of the target frame.

If there is a designated frame header mark in the frame header of the target frame, step 440 is performed; if there is no designated frame header mark in the frame header of the target frame, step 450 is performed.

Step 440: In the case that the specified frame header mark exists in the frame header of the target frame, determine whether the frame header of the target frame is correct. In the case that the frame header of the target frame is wrong, step 442 is executed. If the frame header of the target frame is correct, step 444 is performed.

Step 442, in the case that the frame header of the target frame is incorrect, add 1 to the value of the frame error counter; in the case that the value of the frame error counter reaches a preset value, determine that a frame loss is detected.

Step 444, in the case that the frame header of the target frame is correct, set the value of the frame error counter to 0, and determine that no missing frames are detected.

Step 450, in the case where the specified frame header mark does not exist in the frame header of the target frame, obtain the current time through the clock counter; obtain the specified time when the target port received the target frame last time .

Step 460: Determine whether the difference between the current time and the specified time is greater than a first threshold.

Step 470, in the case that the difference between the current time and the specified time is greater than a first threshold, determine that frame loss is detected.

Step 480, after it is determined that the frame loss is detected, in the case of receiving the data frame, insert a designated identifier into the data frame, where the designated identifier is used to indicate the frame loss state.

In the method for detecting frame loss provided by the embodiment of the present application, whether the frame is lost can be directly determined through a clock counter. Compared with the traditional frame loss detection method, fewer resources are used, so it can solve the problem of detecting frame loss in the related art. way to use more resources. At the same time, after it is determined that the frame loss is detected, a designated identifier for indicating the frame loss state can be inserted into the data frame, and the receiver of the subsequent data frame can know that the frame loss state is in accordance with the designated identifier, which is more conducive to the follow-up. operate. For example, in the case of detection of frame loss, the transmission channel of the target frame can be switched from the working path channel to the protection path channel, thereby ensuring that the transmitted target frame is not interrupted.

FIG. 5 is a structural block diagram of an apparatus for detecting frame loss provided by the present application. Referring to FIG. 5 , the apparatus for detecting frame loss includes: an acquisition module 510 and a processing module 520 .

Wherein, the obtaining module 510 is configured to obtain the target frame to be transmitted by the target interface among the multiple interfaces. The processing module 520 is configured to determine whether there is a specified frame header mark in the frame header of the target frame; in the case that the specified frame header mark does not exist in the frame header of the target frame, determine through the clock counter Whether the time when the target port does not transmit the target frame is greater than a first threshold; in the case where it is determined that the time when the target frame is not transmitted through the target port is greater than the first threshold, it is determined that a frame loss is detected. In this way, using the clock counter to directly determine whether the frame is lost, compared with the traditional frame loss detection method, less resources are used, and thus the problem of the related art method of detecting the lost frame using more resources can be solved.

Optionally, in an embodiment of the present application, the processing module 520 may be configured to insert a specified identifier into the data frame after it is determined that a frame loss is detected, and the specified identifier is The flag is used to indicate the drop frame status. In this way, after it is determined that the frame loss is detected, a designated identifier for indicating the frame loss state can be inserted into the data frame, and the receiver of the subsequent data frame can know that the frame loss state is in accordance with this designated identifier, which is more conducive to the follow-up. operate.

Optionally, in an embodiment of the present application, the processing module 520 is further configured to determine whether the frame header of the target frame is not Correct, in the case that the frame header of the target frame is incorrect, the value of the frame error counter is incremented by 1. When the value of the frame error counter reaches a preset value, it is determined that a frame loss is detected. In this way, in this way of detecting frame loss, in the case where the specified frame header mark exists in the frame header of the target frame, the number of errors in the frame header of the target frame is counted, and the number of errors that occur in the frame header of the target frame. When a certain number of times is reached, it is determined that the frame is dropped. In this way, the method of frame loss detection can be applied to the situation where the specified frame header mark exists in the frame header of the target frame, and the detection range of frame loss can be expanded to avoid failure to detect frame loss in some cases where frame loss may occur. frame problem.

Optionally, in an embodiment of the present application, the processing module 520 is further configured to determine whether the frame header of the target frame is not Correct, if the frame header of the target frame is correct, the value of the frame error counter is set to 0, and it is determined that no frame loss is detected. In this way, in the case that the frame header of the target frame is correct, by setting the value of the frame error counter to 0, it is convenient to use the frame error counter to restart the timing in the case of missing frames in the future, so as to ensure the missing frame. Accuracy of frame statistics.

Optionally, in an embodiment of the present application, the apparatus further includes: a storage module configured to store the time recorded by the clock counter each time the target frame is received. In the process of determining whether the time during which the target frame is not transmitted through the target port is greater than a first threshold through the clock counter, the processing module is specifically configured to: obtain the current time through the clock counter; A designated time when the target frame is received once; determining whether the difference between the current time and the designated time is greater than a first threshold. In this way, the time when the target port does not transmit the target frame can be conveniently obtained, and the time can be compared with the first threshold. Further, it may be helpful for subsequent determination of whether to drop frames based on this.

FIG. 6 is a schematic diagram of a network device provided by the present application; the network device provided by this embodiment of the present application may include: a processor 610 and a memory 620 . Wherein, the memory stores a program or an instruction running on the processor, and when the program or instruction is executed by the processor, the steps of any of the methods for detecting frame loss provided in the embodiments of the present application are implemented.

The network device provided in the embodiment of the present application acquires a target frame to be transmitted by a target interface among the multiple interfaces; determines whether a specified frame header mark exists in the frame header of the target frame; In the case where the specified frame header mark does not exist in the frame, determine whether the time when the target frame is not transmitted through the target port is greater than the first threshold through a clock counter; when it is determined that the target frame is not transmitted through the target port When the time is greater than the first threshold, it is determined that a frame loss is detected. In this way, whether the frame is lost can be directly determined through the clock counter. Compared with the traditional frame loss detection method, fewer resources are used, so the problem of the related art method of detecting lost frame using more resources can be solved.

Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing method for detecting frame loss is implemented, and can To achieve the same technical effect, in order to avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the electronic device described in the foregoing embodiments. The readable storage medium includes a computer-readable storage medium, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, and the like.

An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the above method for detecting frame loss In order to avoid repetition, the details are not repeated here.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like.

An embodiment of the present application provides a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the various processes of the foregoing method embodiments for detecting frame loss, and can achieve the same The technical effect, in order to avoid repetition, will not be repeated here.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present application can be embodied in the form of computer software products that are essentially or contribute to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk , CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims (10)

1. A method for detecting frame loss, characterized in that, being performed by a network device having a plurality of interfaces, the method comprising: obtaining a target frame to be transmitted by a target interface in the plurality of interfaces; Determine whether there is a specified frame header mark in the frame header of the target frame; In the case that the specified frame header mark does not exist in the frame header of the target frame, determine whether the time during which the target frame is not transmitted through the target port is greater than a first threshold through a clock counter; In a case where it is determined that the time for which the target frame is not transmitted through the target port is greater than a first threshold, it is determined that a frame loss is detected. 2. The method according to claim 1, characterized in that after said determining that a frame loss is detected, the method further comprises: In the case of receiving a data frame, insert a designated identifier into the data frame, where the designated identifier is used to indicate a frame loss state. 3. The method according to claim 1, wherein the method further comprises: In the case where the specified frame header mark exists in the frame header of the target frame, determine whether the frame header of the target frame is correct; In the case that the frame header of the target frame is wrong, add 1 to the value of the frame error counter; When the value of the frame error counter reaches a preset value, it is determined that a frame loss is detected. 4. The method according to claim 3, wherein the method further comprises: In the case that the frame header of the target frame is correct, the value of the frame error counter is set to 0, and it is determined that no frame loss is detected. 5. The method according to claim 1, wherein the method further comprises: storing the time recorded by the timepiece counter each time the target frame is received; The determining by the clock counter whether the time during which the target frame is not transmitted through the target port is greater than a first threshold includes: Obtain the current time through the clock counter; Obtain the specified time when the target port received the target frame last time; It is determined whether the difference between the current time and the specified time is greater than a first threshold. 6. A device for detecting frame loss, wherein the device comprises: an acquisition module for acquiring the target frame to be transmitted by the target interface in the multiple interfaces; The processing module is used to determine whether there is a specified frame header mark in the frame header of the target frame; in the case where the specified frame header mark does not exist in the frame header of the target frame, it is determined by a clock counter to pass the target frame. Whether the time when the port does not transmit the target frame is greater than a first threshold; in the case where it is determined that the time when the target frame is not transmitted through the target port is greater than the first threshold, it is determined that a frame loss is detected. 7. The apparatus according to claim 6, wherein the processing module is further configured to: after it is determined that a frame loss is detected, in the case of receiving a data frame, insert a designated identifier into the data frame, The specified identifier is used to indicate a frame loss state. 8. The apparatus according to claim 6, wherein the processing module is further configured to: In the case where the specified frame header mark exists in the frame header of the target frame, determine whether the frame header of the target frame is correct; In the case that the frame header of the target frame is wrong, add 1 to the value of the frame error counter; When the value of the frame error counter reaches a preset value, it is determined that a frame loss is detected. 9. The apparatus according to claim 8, wherein the processing module is further configured to: In the case that the frame header of the target frame is correct, the value of the frame error counter is set to 0, and it is determined that no frame loss is detected. 10. The device according to claim 6, wherein the device further comprises: a storage module for storing the time recorded by the clock counter each time the target frame is received; In the process of determining whether the time during which the target frame is not transmitted through the target port is greater than a first threshold by using a clock counter, the processing module is specifically configured to: Obtain the current time through the clock counter; Obtain the specified time when the target port received the target frame last time; It is determined whether the difference between the current time and the specified time is greater than a first threshold.

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