WO2016000659A1

WO2016000659A1 - Statistical information acquisition method and device

Info

Publication number: WO2016000659A1
Application number: PCT/CN2015/083286
Authority: WO
Inventors: 郑莲淑; 陈国义
Original assignee: 华为技术有限公司
Priority date: 2014-07-04
Filing date: 2015-07-03
Publication date: 2016-01-07
Also published as: CN105281969B; CN105281969A

Abstract

Provided in an embodiment of the present invention are a statistical information acquisition method and device, the method comprising: a transmitting terminal sets a corresponding cycle number for each measurement period in at least one measurement period, and adds the cycle number into the header of a measured packet comprised in the corresponding measurement period; and the transmitting terminal transmits to a receiving terminal the measured packet carrying the cycle number, and acquires the statistical information of a specified measurement period in the at least one measurement period based on the cycle numbers, the statistical information being used to calculate the performance measurement result of the network bearing the measured packet. Compared to the prior art wherein a measurement period is represented dependent on inserted packets in addition to a service stream, the solution reduces the possibility that the statistical information is obtained inaccurately caused by abnormal situations such as the loss of an insertion packet, thus improving the accuracy of calculating the performance measurement result of the network, and avoiding the problem in the prior art that the insertion packet occupies the bandwidth of the service stream.

Description

Method and device for acquiring statistical information

This application claims the priority of the Chinese Patent Application filed on July 4, 2014, the Chinese Patent Application No. CN 201410318272.6, entitled "A Method and Apparatus for Acquiring Statistical Information", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for acquiring statistical information.

Background technique

With the continuous development of information technology, users have higher and higher requirements for network performance. Currently, the commonly used network performance detection methods can be embodied in the following two types: active measurements and passive measurements.

The active measurement needs to inject test packets into the network, and analyze the network performance in combination with the transmission of test packets. This method will generate additional traffic in the network, causing network operation to change, and the measurement results are There is a certain deviation between the actual performance of the network. Passive measurement is to directly monitor the actual traffic flow in the network by the device, and does not generate additional traffic. The measurement result can reflect the real situation of the network and is widely used in fault demarcation, fault location, network optimization and so on.

To perform the passive measurement, the OAM (Operation, Administration, and Maintenance) demarcation packets are inserted into the service flow to divide the service flow into multiple groups of tested packets by using OAM demarcation packets, and monitor each group of tested packets. The transmission situation, obtain statistical information, and then use statistical information to calculate network performance measurement results. For example, for a certain group of measured packets, the number of sent packets obtained by the monitoring of the transmitting end and the number of received packets received by the receiving end are used to calculate the packet loss detection value; or, the sending timestamp and the receiving obtained by the transmitting end monitoring are used. The terminal receives the received timestamp, calculates the delay detection value, and so on.

In summary, the measurement results of the passive measurement depend to some extent on the OAM demarcation message. If the OAM demarcation message has a problem with the demarcation grouping of the service flow, for example, the OAM demarcation message is lost, resulting in a packet error, because the sender Both the receiving end and the receiving end use the two adjacent OAM demarcation messages to divide the interval. Therefore, if the OAM demarcation message is lost during transmission, the sender and the receiving end will be used. Different OAM demarcation messages are divided into sections, so that the monitoring intervals of the two are not matched, which will affect the accuracy of the statistical information obtained by the transmitting end and the receiving end, and thus affect the calculation accuracy of the network performance measurement results. In addition, considering that the OAM demarcation packet occupies a certain bandwidth and inserts it into the service flow, it will inevitably reduce the effective data transmission efficiency of the service flow, and the problem becomes more and more as the number of OAM demarcation packets is increased. obvious.

Summary of the invention

The method and device for acquiring statistical information provided by the embodiments of the present invention are used to improve the accuracy of obtaining statistical information, thereby improving the accuracy of calculating network performance measurement results.

To this end, the embodiments of the present invention provide the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for acquiring statistical information, where the method includes:

The sending end sets a corresponding period number for each measurement period in the at least one measurement period, and adds the period number to the header of the tested packet included in the corresponding measurement period;

Transmitting, by the sending end, the measured packet carrying the period number to the receiving end, and obtaining, according to the period number, statistical information of the specified measurement period in the at least one measurement period, where the statistical information is used to calculate the bearer The performance measurement result of the network of the measured message.

In a first possible implementation manner of the first aspect, the measurement period is divided according to a period parameter, where the period parameter is a specified duration or a number of packets to be measured.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the adding the cycle number to a header of the measured packet included in the corresponding measurement period, include:

The sending end adds the period number to a header of all the tested messages included in the corresponding measurement period; or

And sending, by the sending end, the period number to a header of the specified test packet included in the corresponding measurement period, where the specified test packet is all the measured reports included in the corresponding measurement period according to a preset rule. Selected in the text.

With reference to the first aspect or the first or second possible implementation manner of the first aspect, in a third possible implementation, the adding the cycle number to the measured packet included in the corresponding measurement period In the header, contains:

The sender adds the cycle number to the hop-by-hop option header or destination of the IPv6 header Option extension header; or,

The sender adds the cycle number to an option field of an IPv4 header.

With reference to the first aspect or the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the statistics information is a number of packets, and the obtaining the The statistical information of the specified measurement period in at least one measurement period, including:

The sending end counts the number of the tested packets carrying the same period number in the specified measurement period.

With reference to the first aspect or the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation, the statistics information is a time stamp, and the obtaining the Statistics for a specified measurement period in at least one measurement period, including:

The sending end records the sending timestamp of the specified test packet in the specified measurement period, and the specified measured message is the measured packet carrying the period number at the specified location.

The receiving end receives the measured packet sent by the sending end, and the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period carries the same period number;

The receiving end obtains the statistics of the measurement period based on the period number, where the statistics information is used to calculate a performance measurement result of the network that carries the measured packet.

In a first possible implementation manner of the second aspect, the statistics information is the number of the packets, and the receiving end obtains the statistics information of the measurement period based on the cycle number, including:

The receiving end counts the number of the tested packets carrying the same period number in the measurement period.

With reference to the first possible implementation manner of the second aspect, in the second possible implementation manner, before the receiving end statistics the number of the measured packets carrying the same period number in the measurement period, the method further includes:

The receiving end identifies the measurement starting point of the measurement period according to the received measured message carrying the first cycle number corresponding to the measurement period;

The receiving end identifies a measurement end point of the measurement period according to a change of a cycle number corresponding to the measurement period; and/or, the receiving end obtains a specified duration, and according to the measurement start point and the specified duration of the measurement period A measurement end point of the measurement period is identified.

In a third possible implementation manner of the second aspect, the statistical information is the number of packets, and the receiving end is configured with an allowable hysteresis parameter, and the receiving end obtains the measurement based on the periodic number. Periodic statistics, including:

The receiving end adjusts the measurement period by using the allowable hysteresis parameter, and counts the number of the tested packets carrying the same period number in the adjusted measurement period.

In conjunction with the third possible implementation of the second aspect, in a fourth possible implementation, the allowable hysteresis parameter is a allowable hysteresis duration or a number of allowed packets to be delayed.

With reference to the second aspect or the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation, the statistics information is a time stamp, and the receiving end obtains the The statistical information of the measurement period includes:

The receiving end records a receiving timestamp of the specified test packet in the measurement period, where the specified test packet is a measured packet carrying a period number at a specified location, and the specified location and the sending end The specified location for the record send timestamp is the same.

In a third aspect, an embodiment of the present invention provides a statistical information acquiring apparatus, where the apparatus includes:

a setting unit, configured to set a corresponding cycle number for each measurement cycle in at least one measurement cycle;

a adding unit, configured to add the period number set by the setting unit to a header of the tested packet included in the corresponding measurement period;

a sending unit, configured to send, to the receiving end, the measured packet carrying the period number;

And an obtaining unit, configured to obtain, according to the period number, statistical information of a specified measurement period in the at least one measurement period, where the statistics information is used to calculate the bearer, when the sending unit sends the measured packet The performance measurement result of the network of the measured message.

In a first possible implementation manner of the third aspect, the setting unit is further configured to: before the setting the measurement period, divide the measurement period according to a period parameter, where the period parameter is a specified duration or a specified measurement Number of messages.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation, the adding unit is specifically configured to add the cycle number to all the included in the corresponding measurement period. Measure the header of the message; or,

The adding unit is specifically configured to add the period number to a header of a specified test packet included in a corresponding measurement period, where the specified test packet is included in the corresponding measurement period according to a preset rule. Selected from all the tested messages.

With reference to the third aspect, or the first or the second possible implementation manner of the third aspect, in a third possible implementation, the adding unit is specifically configured to add the cycle number to the IPv6 report. Head hop-by-hop option extension header or destination option extension header; or,

The adding unit is specifically configured to add the period number to an option field of an IPv4 header.

With reference to the third aspect or the first to third possible implementation manners of the third aspect, in the fourth possible implementation manner, the statistics information is the number of packets, and the obtaining unit is specifically used for statistics The number of the measured packets carrying the same cycle number in the specified measurement period.

With reference to the third aspect or the first to fourth possible implementation manners of the third aspect, in the fifth possible implementation manner, the statistics information is a time stamp, and the obtaining unit is specifically used for the recording The sending timestamp of the specified test packet in the specified measurement period, where the specified test packet is the measured packet carrying the cycle number at the specified location.

In a fourth aspect, an embodiment of the present invention provides a statistical information acquiring apparatus, where the apparatus includes:

The receiving unit is configured to receive the measured packet sent by the sending end, where the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period carries the same period Numbering;

And an obtaining unit, configured to obtain, according to the period number, statistical information of the measurement period, where the statistical information is used to calculate a performance measurement result of a network that carries the measured packet.

In a first possible implementation manner of the fourth aspect, the statistics information is a number of packets, and the obtaining unit includes:

Obtaining a subunit for counting the number of the tested packets carrying the same period number in the measurement period.

With reference to the first possible implementation of the fourth aspect, in a second possible implementation, the obtaining unit further includes:

a starting point identifying unit, configured to identify a measurement starting point of the measurement period according to the received first tested message carrying the period number corresponding to the measurement period;

An end point identifying unit, configured to identify a measurement end point of the measurement period according to a change of a cycle number corresponding to the measurement period; and/or, the receiving end obtains a specified duration, and according to the measurement start point of the measurement period and the The specified duration identifies the measurement endpoint of the measurement period.

In a third possible implementation manner of the fourth aspect, the statistics information is a number of packets, and an allowable lag parameter is set, where the obtaining unit includes:

And an adjusting unit, configured to adjust the measurement period by using the allowable hysteresis parameter, wherein the allowable hysteresis parameter is a allowable hysteresis duration or a number of allowed packets to be delayed;

Obtaining a subunit for collecting the same period in the measurement period after the adjustment unit is adjusted Number of the number of measured packets.

With reference to the fourth aspect, or the first to the third possible implementation manners of the fourth aspect, in the fourth possible implementation, the statistics information is a timestamp, and the obtaining unit includes:

a recording unit, configured to record a received timestamp of the specified test packet in the measurement period, where the specified test packet is a test packet carrying a cycle number at a specified location, and the specified location is sent The specified location of the send record timestamp is the same.

The method and device for acquiring statistical information in the embodiment of the present invention, when performing network performance detection, the transmitting end configures a corresponding period number for each measurement period, and writes the period number to the header of the measured packet. In this way, when the transmitting end transmits the measured packet carrying the periodic number to the receiving end, the transmitting end and the receiving end can accurately obtain the statistical information of the specified measurement period based on the period number, and then calculate the measurement period carrying the measurement period. Network performance measurement results. In the embodiment of the present invention, the measurement period is represented by the period number in the measured packet header, and the measurement period is compared with the insertion message other than the service flow in the prior art, thereby reducing the abnormal situation such as the insertion packet loss. The resulting statistical information acquires the possibility of inaccuracy, thereby improving the accuracy of calculating the network performance measurement result. At the same time, the present invention implements, for example, the manner of characterizing the measurement period, and does not have the inserted message occupation service flow as in the prior art. The problem of bandwidth can also effectively ensure the effective data transmission efficiency of the service flow.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only These are some of the embodiments described in this application, and other figures can be obtained from those of ordinary skill in the art in view of these drawings.

1 is a schematic flowchart of a method for acquiring statistics information at a transmitting end according to an embodiment of the present invention;

2-1 is a schematic diagram of a first type of measurement period in an embodiment of the present invention;

2-2 is a schematic diagram of a second division measurement period in the embodiment of the present invention;

2-3 is a schematic diagram of a third divided measurement period in the embodiment of the present invention;

2-4 are schematic diagrams showing a fourth division measurement period in the embodiment of the present invention;

3-1 is a schematic diagram of a format of a header carrying a periodic number in the embodiment of the present invention;

3-2 is a schematic diagram of a format of a second header carrying a periodic number in the embodiment of the present invention;

3-3 is a schematic diagram of a format of a third header carrying a periodic number in the embodiment of the present invention;

4 is a schematic flowchart of a method for acquiring statistical information at a receiving end according to an embodiment of the present invention;

5-1 is a schematic diagram of only one measurement period in the embodiment of the present invention;

FIG. 5-2 is another schematic diagram of only one measurement period in the embodiment of the present invention; FIG.

6 is a schematic diagram of out-of-order transmission of messages in an embodiment of the present invention;

7 is a schematic structural diagram of a statistical information acquiring apparatus on a transmitting end side according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a statistical information acquiring apparatus on a receiving end side according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram showing the hardware configuration of a statistical information acquiring apparatus according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are further described in detail below with reference to the drawings and embodiments.

Before the technical solutions of the embodiments of the present invention are introduced, the specific application scenarios of the embodiments of the present invention are explained.

When using the passive measurement method to perform network performance detection, it is necessary to make the device through which the service flow flows clearly divide the monitoring interval, and then obtain the packet transmission information in the interval in which the packet statistics information in the monitoring interval is monitored. , get statistics and calculate network performance measurements.

In the prior art, the monitoring interval is divided by inserting an OAM demarcation packet into the service flow, so that the device can treat the service packet between any two adjacent OAM demarcation packets as a group of measured reports. The monitoring of the transmission of the measured packets of the group. For example, the transmitting device records the number of transmitted packets RX[i] when the ith group of measured packets are sent, and the receiving device records the number of received packets TX[i] when receiving the measured packets of the ith group. It can be calculated that the number of lost packets in the interval of the i-th packet under test is RX[i]-TX[i].

Because both the transmitting end and the receiving end use the two adjacent OAM demarcation messages to divide the interval, if the OAM demarcation message is lost during transmission, the transmitting end and the receiving end use different OAM demarcation messages. Dividing the interval, causing the monitoring intervals of the two to not match, resulting in errors in the measurement results.

In addition, in the manner of dividing the monitoring interval, the size of the monitoring interval is inversely proportional to the number of inserted OAM demarcation messages, that is, the smaller the monitoring interval, the more OAM demarcation messages need to be inserted, and the OAM demarcation report text body It also occupies a certain amount of bandwidth. Therefore, as the monitoring interval becomes smaller, the bandwidth occupied by OAM demarcation packets in the service flow will gradually become larger, resulting in a decrease in the effective data transmission efficiency of the service flow.

The solution of the embodiment of the present invention provides a new scheme for obtaining statistical information, which can improve the problem that the foregoing information is obtained when the OAM demarcation packet is used to obtain the statistical information and the network performance measurement result is calculated. Obtain the accuracy of statistical information, and thus improve the accuracy of computing network performance measurement results.

The solution of the embodiment of the present invention relates to the two sides of the sending end and the receiving end, and the following describes the process of obtaining the statistical information in the embodiment of the present invention.

Referring to FIG. 1 , a schematic flowchart of a method for acquiring statistics information at a sending end according to an embodiment of the present invention is shown, which may include the following steps:

Step 101: The transmitting end sets a corresponding period number for each measurement period in the at least one measurement period, and adds the period number to the header of the tested packet included in the corresponding measurement period.

Step 102: The sending end sends, to the receiving end, the measured packet carrying the period number, and obtains, according to the period number, statistical information of the specified measurement period in the at least one measurement period, where the statistical information is used. And calculating a performance measurement result of the network that carries the measured packet.

The sending end processes the measured packet according to the solution of the embodiment of the present invention, so that the sending end and the receiving end automatically obtain the statistical information by using the processed measured packet, so as to be used when calculating the performance measurement result. It should be noted that the measured packet in the embodiment of the present invention may be a data packet or a control management packet. Multiple tested messages form a service flow. The embodiment of the present invention may not limit the specific type of the tested message.

Specifically, the processing procedure of the embodiment of the present invention mainly involves the following points: setting a cycle number, dividing a measurement period, adding a cycle number, and monitoring statistical information, which are explained below.

1. Set the cycle number according to the preset method.

As an example, the preset mode may be monotonically increasing, and the increment step is 1. Therefore, after determining the initial cycle number, other cycle numbers may be sequentially determined on the basis of the initial cycle number, for example, the initial cycle number is P1. Then set the cycle number can be expressed as: P1, P2, P3, .... Here, it should be noted that the preset manner of setting the cycle number, the value of the initial cycle number, and the total number of cycle numbers that are set may be determined according to actual application requirements, and this embodiment of the present invention It is not specifically limited.

2. Divide the measurement period.

When the sending end obtains the statistical information according to the solution of the embodiment of the present invention, the at least one measuring period may be divided from the service flow according to the periodic parameter (it is understandable that the measuring period is the measuring interval). The period parameter is a parameter used to divide the measurement period, and is expressed as a specified duration or a specified number of packets to be measured (specifically, the number of packets to be measured carrying the cycle number in the measurement period). In addition, the cycle parameter The number may be pre-configured in the transmitting end, or may be input from the outside when needed. This embodiment of the present invention may not specifically limit this.

As an example, the periodic parameter may be input to the transmitting end by an external measuring personnel. For example, the measuring personnel may obtain the periodic parameter by inputting the command line; or the periodic parameter may also be input to the transmitting end by the external control device, specifically The control device may be a centralized controller in the SDN (Software Defined Network), or may be a device such as a network management device, or the control device may be a dedicated device, which may not be specifically limited in this embodiment of the present invention. .

The following describes the cycle division mode of the embodiment of the present invention by taking the measurement cycle according to the cycle parameter of the external input as an example.

In the first method, after receiving the periodic parameters, the transmitting end starts to process the service flow that flows through the sending end, which is specifically: adding the set period number to the packet of the service flow. The cycle number mentioned above is taken as an example. After the sender is triggered (as an example, the sender can be triggered by a period parameter input externally, or can be triggered by other parameters or instructions input externally, wherein the external can be The embodiment of the present invention is not limited to the external measurement personnel or the external device. The initial cycle number P1 is added to the header of the message being transmitted, and the current requirement of the periodic parameter is determined (hereinafter, it will be combined). The different expressions of the cycle parameters are explained here, and will not be explained here. If it is satisfied, the process of adding the cycle number P1 is completed, and the next cycle number P2 can be called, and P2 is added to the report transmitted at this time. The header of the text, and the judgment of the periodic parameters, the process loops back and forth until the completion of the addition process of all the set cycle numbers is completed, or the control execution stops the addition process.

According to the process of adding the cycle number, the addition of a cycle number is equivalent to completing the division of one measurement cycle. It can be understood that all the packets with the same cycle number are divided into one measurement. cycle. As shown in the above example, all the measured packets carrying P1 belong to one measurement period. For the sake of easy understanding, it can be defined as the measurement period T1; further, all the measured packets carrying P2 belong to the measurement period T2, and so on. At least one measurement period can be divided from the service flow according to the periodic parameter, and details are not described herein again.

If the period parameter is expressed as a specified duration, for example, if the period parameter is 1 s, then the above judgment determines whether the current period parameter is met, which can be understood as:

For each period number, the first time from the sending end to the header of the measured packet, the period number is added, the timing is performed, and a judgment is made after each addition of a measured message is completed. Determine whether the time is up to the specified length of time. That is, whether the interval has been specified in the middle from the start of the time to the current time, and if so, it is determined that the current period parameter is satisfied, and the process of adding the current cycle number can be ended; if not, it is determined that the cycle parameter has not been met yet. The requirements can continue with the current cycle number addition and the addition of the duration judgment process until the requirements of the cycle parameters are met.

It should be noted that when the judgment of the addition duration is performed, the judgment may be made every time a test message is added as described above; or, the judgment may be performed in the form of sampling according to other fixed periods and variable periods. For example, in the early stage of the timer, the judgment is made at a large interval (for example, every 5 message additions are completed, or every 1/10 s intervals), and as the addition process progresses, the reduction judgment interval can be continuously adjusted. Specifically, the timing of the determination may be determined by actual requirements, and the embodiment of the present invention may not be specifically limited.

If the period parameter is specified as the number of packets to be measured, for example, if the period parameter is 50 packets, the above judgment determines whether the current period parameter is met.

For each cycle number, the first time from the sender to the header of the measured packet, the cycle number is added to start counting, and each time a test packet is added, a judgment is made, and the judgment is made. Whether the count reaches the specified number of measured packets, and if so, it determines that the current period parameter is met, and may end the process of adding the current cycle parameter; if not, it determines that the current cycle parameter has not been met, and can continue the current process. The process of adding the cycle number and judging the number of additions until the requirements of the cycle parameters are met.

In the second mode, after receiving the periodic parameter, the transmitting end may first use the periodic parameter to divide at least one measurement period from the service flow flowing through the transmitting end, and then according to the correspondence between the measurement period and the period number, to each measurement period. Add the corresponding cycle number to the measured message included in the test packet.

If the period parameter is in the specified duration, if the period parameter is 1 s, the sender can use the period parameter to divide the packet corresponding to the first 1s in the service flow into the first measurement period, and the second 1s corresponding report. The text is divided into the second measurement period, and so on, and will not be described here. For example, in the above example, the sending end may add P1 to the header of the tested packet included in the first measurement period, and add P2 to the header of the tested packet included in the second measurement period. , such a process, until the addition process of all the set cycle numbers is completed, or is controlled to stop the addition process.

If the period parameter is specified as the number of packets to be measured, if the period parameter is 50 packets, the sender can use the period parameter to add the first message of the cycle number to the 50th message. The message between the two is divided into the first measurement cycle, and the 51st message to be added with the cycle number is sent to the 100th The packets between the packets are divided into the second measurement period, and so on, and are not described here. For example, in the above example, the sending end may add P1 to the header of the tested packet included in the first measurement period, and add P2 to the header of the tested packet included in the second measurement period. , such a process, until the addition process of all the set cycle numbers is completed, or is controlled to stop the addition process.

In addition, in combination with the process of dividing the measurement period by using the periodic parameters, the embodiment of the present invention can also be described as follows:

(1) The measurement period can be expressed as: continuous period, discontinuous period.

For the measurement period divided from the service flow, it can be embodied as the continuous period shown in Figure 2-1, that is, after the sender is triggered, it automatically performs the uninterrupted period division of the traffic stream currently transmitted by the sender. Or, it can be embodied as a non-continuous period as shown in Figure 2-2, that is, several packets or intervals may be separated between each divided measurement period.

For the non-continuous measurement period that is divided, it should be noted that, in the implementation, the periodic interval may be configured in advance on the sending end (for example, the preset preset number of packets, or the preset preset duration, etc.) It may not be specifically limited), and the transmitting end automatically sets the discontinuous measurement period according to the configuration. Alternatively, the transmitting end may also set the discontinuous measurement period according to the externally input control information. For example, if the control information is a periodic interval, the transmitting end can automatically perform regular non-continuous measurement period setting after receiving the control information; or, if the control information is a measurement period start instruction, the transmitting end can perform regular and irregular according to the control information. The non-continuous measurement period setting, that is to say, once the transmitting end receives the start command, it uses the period parameter to divide a measurement period. If the external law inputs the start instruction to the transmitting end, the transmitting end sets the discontinuity accordingly. The measurement period is regular. If an external irregular input of a start command is made to the transmitting end, the discontinuous measurement period set by the transmitting end is irregular.

As an example, FIG. 2-2 shows a regular interval of two messages between measurement periods.

(2) The measured packet with the added period number can be embodied as: all the measured packets included in the measurement period and the specified measured packet included in the measurement period.

As described above, the measurement period divided from the service flow can be continuous or non-continuous, and in either case, the sender can automatically record the report within the specified period by monitoring the cycle number. Statistical information.

Specifically, after the measurement period is divided, when the period number included in each measurement period is added, the period number may be further divided into two specific cases. Let's take the continuous cycle as an example. Explain the specific circumstances.

In the first case, as shown in Figure 2-1, all the measured packets included in the measurement period carry the cycle number corresponding to the measurement period. As shown in the figure, all the 50 packets included in the measurement period T1 carry the cycle number. P1, in this way, the transmitting end can accurately count the statistical information of each message corresponding to T1, and then accurately calculate the performance measurement result.

In the second case, as shown in Figure 2-3 and Figure 2-4, it is not necessary to carry the period number of all the packets to be tested in the measurement period. Only the specified packet to be measured according to the preset rule will carry the period number. Specifically, the preset rule may be embodied as: at a specified position (a specified position determined by a rule or an irregularity), at a certain interval (interval at intervals of time, number of packets, etc.), according to parity The rules of the present invention are not specifically limited in this embodiment of the present invention.

In addition, in conjunction with the specific expression of the periodic parameter, the case where the cycle number is added to the specified test packet is also explained in the embodiment of the present invention. As shown in Figure 2-3 and Figure 2-4, the same preset rule is used to determine the specified packet to be tested. However, after combining the periodic parameters, the following differences exist:

Figure 2-3 divides the measurement period according to the specified number of packets to be measured. Compared with Figure 2-1, the number of packets to be tested included in the same measurement period is different, but the number is added. The number of packets tested is the same. As shown in the figure, both of them must have 50 measured packets carrying cycle numbers, but each measurement cycle in Figure 2-1 contains 50 measured packets, and each measurement cycle in Figure 2-3 Contains 100 tested messages.

In Figure 2-4, the measurement period is divided according to the specified duration. Compared with Figure 2-1, the number of packets to be tested included in the same measurement period is the same, but the number of packets with periodic number is added. It is different. As shown in the figure, each of the two measurement cycles contains 50 measured packets, but in each measurement cycle in Figure 2-1, there are 50 measured packets carrying the cycle number, and Figure 2-4 In each measurement cycle, there are 25 packets with the cycle number.

In addition, it should be noted that, for the non-continuous measurement period, when the cycle number is added to the measured message included in each measurement cycle, the above two cases also exist. For details, refer to the above description. Let me repeat.

3. Add a cycle number to the header of the packet under test.

In conjunction with the protocol supported by the device, the embodiment of the present invention provides three ways for the header to carry the cycle number, which are explained below.

In the first mode, if the device supports the IPv4 protocol, the corresponding period number (Period Number) can be added to the Option field of the header. As an example, see the carrying week shown in Figure 3-1. Schematic diagram of the header of the period number.

Manner 2: If the device supports the IPv6 protocol, the corresponding cycle number can be added to the Hop-by-hop hop-by-hop option header (HbH Header) of the header. As an example, refer to the format diagram of the header carrying the cycle number shown in Figure 3-2.

In the third mode, if the device supports the IPv6 protocol, the corresponding cycle number can be added to the Destination destination option header (Dest Header) of the header. As an example, refer to the format diagram of the header carrying the cycle number shown in Figure 3-3.

The above three methods can make the measured message (all the measured headers included in the measurement period, or the specified measured packets included in the measurement period) carry the corresponding cycle number, in contrast, using the first and second modes. The added cycle number can realize end-to-end detection and segmentation detection; the cycle number added by mode 3 can realize end-to-end detection, and the detection process does not need the support of the intermediate node, and is easier to deploy.

The so-called end-to-end detection can be understood as the network performance detection between the transmitting end of the source node and the receiving end as the destination node, that is, the statistical information obtained by the source node monitoring and the statistical information monitored by the destination node are calculated. Measurement of network performance between the two.

At the same time, considering the traffic flow sent by the source node, it may need to be forwarded by the intermediate node to be transmitted to the destination node. Therefore, the source node and the intermediate node, the upstream intermediate node, and the downstream intermediate node may also be utilized (upstream and downstream are based on The intermediate node is combined with the destination node in the direction of the transmission path, and the segmentation detection of the network performance is performed.

That is, the source node can form a detection combination with any intermediate node, the source node monitors the service flow to obtain the originating statistical information, and the intermediate node monitors the service flow to obtain the terminal statistical information, thereby calculating the performance of the network segment corresponding to the detection combination. Measurement results. Alternatively, the detection combination formed by the upstream intermediate node and the downstream intermediate node, the service flow is forwarded to the downstream intermediate node through the upstream intermediate node, and the upstream intermediate node can monitor the service flow to obtain the originating statistical information, and the downstream intermediate node can monitor the service flow. Obtaining the statistics of the receiving end, and then calculating the performance measurement result of the network segment corresponding to the detection combination. Alternatively, the detection combination formed by any intermediate node and the destination node, the service flow is forwarded to the destination node through the intermediate node, the intermediate node can monitor the service flow to obtain the originating statistical information, and the destination node monitors the service flow to obtain the receiving end statistical information, and further The performance measurement result of the network segment corresponding to the detection combination is calculated.

In summary, the source node, the destination node, and the intermediate node can automatically monitor the service flow transmission status according to the cycle number carried in the packet to obtain statistical information, and calculate the network performance measurement result on this basis. It should be noted that, in the headers shown in FIG. 3-1 to 3-3, the length Length is 6 bytes, and the period is programmed. The number of the Period number is 4 bytes, which is only an example of the present invention. The specific format setting may be determined according to the actual situation, and the embodiment of the present invention may not specifically limit this. In addition, in the above examples, the information of the cycle number is carried by the IP layer. However, in a specific implementation, other layers, such as a MAC layer, may be used to carry the cycle number. Can not be specifically limited.

4. Monitor business traffic for statistical information.

After the above three processing actions, the service stream transmitted by the transmitting end to the receiving end carries the information of the cycle number, so that the transmitting end and the receiving end can obtain the statistical information of the specified measurement period based on the cycle number, and then use the statistics. The performance measurement results of the information computing network.

It should be noted that, in order to improve the flexibility of obtaining the statistical information in the embodiment of the present invention, the sending end and the receiving end may obtain the statistical information of each measurement period, or may obtain the statistical information of the specified measurement period as needed. This may not be specifically limited, as long as the sender and receiver are negotiating in advance.

As an example, the sending end obtains the statistics information of the specified measurement period, which can be understood as: the sending end acquires the period number carried in the measured packet, and if the period number corresponds to the specified measurement period, the solution obtains the method according to the embodiment of the present invention. The statistical information of the measurement period is specified; and if the cycle number is found to be a non-designated measurement period, the acquisition of the statistical information of the non-designated measurement period is stopped.

In addition, it should be noted that the network performance measurement can be embodied as different measurement contents, and the statistical information that needs to be acquired for different measurement contents is also different. The following describes the process of obtaining the statistical information by combining the measurement contents.

(1) If the measurement content is the number of packet loss, the corresponding statistical information is the number of packets sent. The sender can obtain the statistics by counting the number of packets with the same period number in the specified measurement period.

(a) If the source node counts the number of packets to be measured, it can be implemented as follows:

In the first mode, if the period parameter is the specified duration, when the source node detects that a certain period number is transmitted for the first time, a timer is started, and the measurement start point corresponding to the period of the period is used as the measurement starting point (the measurement starting point can be It is understood that the starting point of the measurement interval represented by the measurement period may be expressed as the time or the location of the message, which may not be specifically limited in the embodiment of the present invention. At the same time, the timing is reached for a specified duration (ie, the above is used to determine the measurement period) The specified end of the measurement period is the measurement end point of the measurement period (the measurement end point can be understood as the end point of the measurement interval indicated by the measurement period, which can be embodied as the time or the location of the message, which may be specifically limited in the embodiment of the present invention, as long as From measurement The corresponding number of points can be used to count the number of packets with the number of packets sent during the period as the number of packets sent during the measurement period.

For example, the current measurement period is the measurement period T2 corresponding to the period number P2, and the specified duration is 1 s. Then, when the source node sends the first measured packet carrying the P2, the timing starts, and the counter can also be started to record. Number of messages sent. Take the situation shown in Figure 2-1 as an example. When the source node sends the measured packet 51, it starts counting and counting. Each time a packet with P2 is sent, the counter is incremented by one. The timer count is stopped at 1 s, and the number of packets obtained by counting is used as the number of transmission packets corresponding to the measurement period T2, and the process of acquiring statistical information based on the cycle number in the embodiment of the present invention is implemented.

Manner 2: If the period parameter specifies the number of packets to be measured, the source node does not have an out-of-order condition when it sends out the service flow. Therefore, when it is detected that a certain period number is transmitted for the first time, only one can be started. The counter is used by the counter to identify the measurement end point according to the number of the specified packets to be measured. (For example, the example of sending the P2 test packet is still sent by the counter, and the counter adds 1 for each sent packet carrying the P2. The process stops counting until the count reaches the specified number of measured packets, and determines the measurement end of the measurement period T2 at this time, and then obtains the number of transmission packets of the measurement period corresponding to the cycle number, thus implementing the present invention. An embodiment is a process of obtaining statistical information based on a cycle number.

(b) If the upstream intermediate node counts the number of packets to be measured, it can be implemented as follows:

The first method is similar to the manner in which the source node counts the number of the measured packets. When the upstream intermediate node detects that a certain period number is transmitted for the first time, it starts counting and counting, and counts the corresponding count when the timer reaches the specified duration. As a result, the number of transmission packets as the measurement period corresponding to the period number is not illustrated here.

In the second mode, when the upstream intermediate node detects that a certain period number is transmitted for the first time, it starts counting, and takes this time as the measurement starting point of the measurement period corresponding to the period number; correspondingly, the period number is detected in the upstream intermediate node. When the change is made, the counting is stopped, and the current time is taken as the measurement end point of the measurement period, and the counting result of the period is used as the number of transmission packets of the measurement period.

For example, the current measurement is the measurement period T2 corresponding to the period number P2. Then, when the upstream intermediate node sends the first packet with the P2 to be sent out, the first intermediate node sends the first P3. When the measured message is stopped, the counting is stopped, so that the number of transmitted packets corresponding to the measurement period T2 can be counted. Taking the situation shown in Figure 2-1 as an example, when the upstream intermediate node sends the measured packet 51, it starts counting; correspondingly, when the upstream intermediate node sends the measured packet 101, it stops counting and sends a previous report. The count result when the text (ie, the measured message 100) is used as the corresponding measurement period T2 The number of messages sent. At the same time, another counter needs to be started to count the measurement period T3 corresponding to the monitored period number P3 (ie, the measured message 101 is used as the measurement starting point of the measurement period T3) to obtain the measurement period T3. Number of messages sent.

It should be noted that the number of counters may be the same as the number of measurement periods, that is, one counter is used to record the number of transmitted packets corresponding to one measurement period; or the number of counters may be less than the number of measurement periods. That is, the number of transmitted packets corresponding to each cycle is recorded by cyclically using the counter. For example, if five measurement periods are divided from the service flow and three counters are configured, the counter 1 can be used to count the measurement period T1 carrying P1 and the measurement period T4 carrying P4; the counter 2 can be used to carry P2 The measurement period T2, the measurement period T5 carrying P5 is counted, and the counter 3 can be used to count the measurement period T3 carrying P3.

(2) If the measurement content is a delay, the corresponding statistical information is a timestamp, and the sender can obtain the statistical information by recording the transmission timestamp of the specified test packet in the specified measurement period. The specified packet is the measured packet with the carrying period number at the specified location.

After determining the measurement starting point of a certain measurement period, the source node or the upstream intermediate node can record the transmission timestamp of the specified packet according to the preset setting, and use it as the packet sending time corresponding to the measurement period.

As a preferred solution, the measurement starting point is used as the designated position, and the timestamp when the packet is sent at the measurement starting point is recorded. Taking the measurement period T2 shown in FIG. 2-1 as an example, the recorded packet is sent 51. The timestamp of the time interval; or the arbitrary position between the measurement start point and the measurement end point may be used as the designated position, and the time stamp is recorded, which may be specifically limited in this embodiment of the present invention, as long as each end pre-negotiates the designated position, and Time stamping can be done according to negotiation.

(3) Other measurement contents. The foregoing is only an example of the measurement content of the packet loss and the delay. In addition, the sending end may also monitor other traffic information based on the service flow carrying the cycle number according to the embodiment of the present invention. And matching with other statistical information obtained by the receiving end to obtain network measurement results for other measurement content, which is not illustrated here.

5. Calculate network performance measurement results based on statistical information.

When the network performance is measured by the passive measurement method, the measurement result can be calculated based on the statistical information acquired by the solution of the embodiment of the present invention. Specifically, the transmitting end obtains the statistics of the originating end by monitoring the transmission status of the service stream carrying the period number. Correspondingly, the receiving end can obtain the statistics of the receiving end by monitoring the statistical information of the service stream carrying the period number (for details, see The following is an introduction to the scheme shown in Figure 4, which is not explained here. In this way, the measurement results of the network performance can be calculated. (According to actual needs, it can be reflected as end-to-end network performance measurement results, or segmented network performance measurement results).

When the sending end performs statistics, statistics of each measurement period in at least one measurement period may be counted, and statistics of part of the measurement period in at least one measurement period may also be counted. For example, if there are a total of three measurement periods, the sender can all count the statistics of the three measurement periods, and also statistics of some of the specified measurement periods.

Specifically, the network performance measurement result may be calculated by the sending end. In this case, the receiving end needs to feed back the terminal statistical information to the sending end, and is used when the transmitting end calculates the measurement result. Alternatively, the network performance measurement result may also be calculated by the receiving end. In this case, the sending end needs to feed back the sending end statistics information to the receiving end, and is used when the receiving end calculates the measurement result. Alternatively, the network performance measurement result may be calculated by an external device. In this case, the sending end needs to send the statistics information of the sending end, and the receiving end feeds back the statistical information of the receiving end to the external device separately, and is used when the external device calculates the measurement result. It should be noted that the external device may be embodied as a dedicated device, or may be embodied as the control device mentioned above. The embodiment of the present invention does not limit the main body, the external device, and the like for calculating the measurement result, and may be specifically It depends on the actual application.

According to the above description, the way of characterizing the measurement period by the period number carried by the message enables the sender and the receiver to automatically and easily define the range of the interval without having to rely on the service flow as in the prior art. The other packets (for example, the OAM demarcation packets inserted into the service flow) are divided into sections, so that the possibility of inaccurate statistical information acquisition due to abnormal conditions such as the insertion of packet loss can be reduced, thereby improving the performance measurement of the computing network. The accuracy of the results. In addition, the solution of the embodiment of the present invention does not need to insert other packets into the service flow, and there is no problem of occupying the bandwidth of the service flow, which can effectively ensure the effective data transmission efficiency of the service flow. In addition, as can be seen from the above description, the size of the measurement interval indicated by the measurement period in the solution of the embodiment of the present invention mainly depends on the period parameter. When the size of the measurement interval needs to be adjusted, only the value of the corresponding modification period parameter is required. However, the implementation process is simple and flexible, and does not affect the accuracy of obtaining statistical information, the accuracy of calculating measurement results, and the effective data transmission rate of service flows.

Corresponding to the method for obtaining the statistics information of the sending end, the embodiment of the present invention further provides a method for obtaining statistics information of the receiving end. For details, refer to the flowchart shown in FIG. 4, which may include the following steps:

Step 201: The receiving end receives the measured packet sent by the sending end, where the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period carries the same period. Numbering.

Step 202: The receiving end obtains statistics information of the measurement period based on the period number, where the statistics information is used to calculate a performance measurement result of a network that carries the measured packet.

According to the above description, the sender adds the period number to the packet to be transmitted to the receiver, so that the receiver can obtain the statistics of the packet by monitoring the period number during the process of receiving the packet to be tested. Information for use in subsequent calculations of network performance measurements. It should be noted that the measured packet in the embodiment of the present invention may be a data packet or a control management packet. Multiple tested messages form a service flow. The embodiment of the present invention may not limit the specific type of the tested message.

The following describes the process of reading the cycle number, identifying the monitoring interval, and obtaining statistical information at the receiving end.

1. Read the cycle number information carried in the header.

Corresponding to the manner in which the sending end adds a cycle number to the header, the embodiment of the present invention provides three ways of reading the cycle number, which are explained below.

In the first mode, if the device supports the IPv4 protocol, and the sender adds the cycle number according to the above manner, the receiver can obtain the cycle number by reading the Period Number in the Option field.

Manner 2: If the device supports the IPv6 protocol and the sender adds the cycle number according to the above method, the receiver can obtain the cycle number by reading the Period Number in the Hop-by-hop extension header.

Manner 3: If the device supports the IPv6 protocol, and the sender adds the cycle number according to the above manner, the receiver as the destination node can obtain the cycle number by reading the Period Number in the Destination extension header.

As described above, the cycle number of the first and second read modes can be used to implement the end-to-end detection and the segmentation detection. Corresponding to this, the receiving end in the embodiment of the present invention can be embodied as an intermediate node or a destination node; The end number of the three-reading period can be end-to-end. Corresponding to this, the receiving end in the embodiment of the present invention is embodied as a destination node.

It should be noted that if the sending end carries the period number through other layers than the IP layer, the receiving end only needs to read the period number in the corresponding position, which is not illustrated here.

2. Identify the monitoring interval based on the cycle number.

When receiving the service flow carrying the cycle number transmitted by the transmitting end, the receiving end can identify the monitoring interval indicated by the measurement period according to the cycle number, which requires the receiving end to clarify the measurement starting point and the corresponding measurement end point of each measurement cycle. . The process of determining the measurement start point and the measurement end point will be explained below.

(1) The way to determine the starting point of the measurement.

Specifically, the receiving end may identify the measurement starting point of the measurement period according to the received test packet carrying the first cycle number corresponding to the measurement period, which may be embodied in the following implementation manners:

In the first mode, the receiving end receives the service flow sent by the sending end, and determines whether the currently received packet carries a cycle number. If the cycle number is not carried, the received service flow is normally processed; if the cycle number is carried, Continue to determine whether the message is the first time received by the receiving end, and according to the scheme shown in a and b, continue to determine the starting point of the measurement:

(a) If yes, the measurement start point of the measurement cycle corresponding to the cycle number is determined at this time. As shown in Figure 2-1, the receiving end receives the packet 1 and determines that the packet carries the period number P1 and is the first packet carrying the period number. Therefore, the packet can be tested. The measurement starting point of the measurement period T1 corresponding to P1 is determined.

(b) If no, it is determined whether the cycle number is the same as the cycle number added in the message carrying the previous carry cycle number, and according to the judgment result, the measurement start point is continuously determined according to the schemes indicated by b1 and b2:

(b1) If it is different, it is clear that the measurement start point of the measurement period corresponding to the cycle number is at this time. As shown in Figure 2-2, the receiving end receives the measured packet 53 carrying the period number P2, and determines that the measured packet 50 carrying the period number P1 has been received beforehand, and the two carry the period number. The measurement message 53 can be determined as the measurement starting point of the measurement period T2 corresponding to P2. Correspondingly, the message 50 carrying the cycle number P1 is determined as the measurement end point of the measurement period T1.

(b2) If they are the same, it is clear that this is not the measurement starting point of the measurement period corresponding to the cycle number. As shown in Figure 2-3, the receiving end receives the measured packet 3 carrying the periodic number P1, and determines that the measured packet 1 carrying the periodic number P1 has been received before, and the two carry the same periodic number. Therefore, it can be determined that the measured message 3 is not the measurement starting point of the measurement period T1.

It can be seen from the introduction of the first method and the example that it is applicable to the continuous measurement period, the discontinuous measurement period, and all the measured packets in the measurement period carry the cycle number and the specified test packet carrying cycle number within the measurement period. , and so on, there is no longer an example here.

It should be noted that the above manner is mainly for the sender and the receiver not pre-negotiated. The method of determining the measurement starting point in the embodiment of the present invention may be as follows: the first carrying period number received by the receiving end, in the case where there are at least two measurement periods, and the case where there is only one measurement period. The message is determined as the starting point of the measurement cycle.

In addition, it should be noted that, in the scenario where the transmitting end and the receiving end do not pre-negotiate the measurement period dividing manner, the receiving end can automatically identify the measurement starting point according to the introduction of the method, but if the two are in advance negotiated Then, the receiving end can automatically identify the measurement starting point of each measuring cycle in the following manner.

Manner 2: If the transmitting end and the receiving end pre-negotiate to divide the continuous measurement period from the service flow as shown in Figure 2-1, the way to determine the starting point is:

(a) For the case where the message carrying the cycle number is received for the first time, it can be determined as the measurement start point of the first measurement cycle. For example, if the measured message 1 carrying the cycle number P1 is received, and it is the first received message carrying the cycle number, the measured message 1 can be determined as the measurement starting point of the measurement period T1.

(b) For the case where the message carrying the cycle number is not received for the first time, the measurement start point of the measured cycle corresponding to the changed cycle number may be determined when the cycle number is changed. For example, if the measured packet 51 carrying the period number P2 is received, and the period number carried by the measured packet 50 received before is P1, that is, the period number changes, the detected packet 51 can be determined as The measurement starting point of the measurement period T2.

Manner 3: If the sender and the receiver pre-negotiate to divide the non-continuous measurement period from the service flow as shown in Figure 2-2, the way to determine the measurement starting point is:

(a) For the case where the message carrying the cycle number is received for the first time, the process of determining the measurement starting point is the same as the case (a) in the second mode, and details are not described herein again.

(b) For the case where the message carrying the cycle number is not received for the first time, the process of determining the measurement start point is the same as the case (b) in the second mode, except that the cycle number changes between the two messages. There is a certain interval (the interval may be reflected in several messages or a period of time, and the embodiment of the present invention may not be specifically limited, as long as the transmitting end and the receiving end negotiate in advance). For example, if the measured packet 53 carrying the period number P2 is received, and the period number of the detected packet 50 that is separated from the two packets is P1, that is, the period number changes, so that the measured packet 53 can be detected. It is determined as the measurement starting point of the measurement period T2.

It should be noted that, for the continuous measurement period shown in FIG. 2-3 and 2-4, all or a specified test packet carrying cycle number of each cycle is carried, or all or specified of each cycle is specified for the discontinuous measurement cycle. The measurement packet carries the cycle number. As long as the sender and receiver receive the negotiation in advance, they can press According to the above two situations, the measurement starting point of the measurement period is automatically identified. For the specific process, refer to the above description, which will not be explained one by one.

(2) Determine the way the end point is measured.

In the first manner, the receiving end obtains the period parameter used by the transmitting end to divide the measurement period, such as obtaining the specified duration (the same manner as the sending end obtaining the periodic parameter, the periodic parameter may be pre-configured at the receiving end, or may be externally input when needed) To the receiving end, the embodiment of the present invention does not specifically limit this, and after identifying the measurement starting point of the measurement period in the manner described above, a timer is started, and when the timing reaches the specified duration, the measurement period is used. The end point is measured. As shown in Figure 2-1, if the specified duration is 1 s, the measurement start point (the measured packet 51 carrying the cycle number P2) is recognized from the receiving end, and the timing is started until the timing reaches 1 s. The corresponding measured message at this time is determined as the measurement starting point of the measurement period T2.

In the second mode, after the receiving end recognizes the measurement starting point of the measurement period in the manner described above, the measurement end point can also be identified according to the change of the cycle number. As shown in Figure 2-1, when the measurement start point of the measurement period T1 (the measured packet 1 carrying the period number P1) is detected, it is determined whether the period number carried in the received packet is changed. When the detected message 51 is received, the determination cycle number is changed from P1 to P2, so that the measured message 50 carrying the previous cycle number P1 can be determined as the measurement end point of the measurement period T1, and the detected message 51 is determined as The measurement starting point of the measurement period T2.

It should be noted that the foregoing method for changing from one cycle number to another cycle is applicable to a case where there are at least two measurement periods, and in the case of only one measurement period, in the embodiment of the present invention, according to the cycle number. The change to identify the measurement endpoint can be embodied as: identifying the measurement endpoint based on changes in the regularity of the addition cycle number. The identification process is explained below in conjunction with two examples.

As shown in Figure 5-1, there is only one measurement period T1 in the service flow. As shown in the figure, each measured packet in the measurement period T1 is added with the period number P1, that is, the rule of adding the period number. For the continuous addition, corresponding to this, the receiving end recognizes the measurement end point in the following manner: when the measurement starting point of the measurement message 1 is recognized, it is judged whether the re-received test packet carries the cycle number P1, and when the measured report is received If it is determined that the cycle number is not carried in the case of 51, the law of the cycle number may be changed, and the measured message 50 carrying the previous cycle number P1 may be determined as the measurement end point of the measurement cycle T1.

As shown in Figure 5-2, there is only one measurement period T1 in the service flow, and as shown in the figure, The rule of adding the cycle number in the measurement period T1 is: adding a cycle number to the measured message located at the odd position, that is, adding a cycle number every interval of the message, corresponding to this, the way the receiver recognizes the measurement end point is: self-identification When the measurement start point 1 is measured, it is judged whether the received packet carrying the cycle number P1 meets the above rule. When the detected message 51 is received and it is determined that it does not carry the cycle number, the rule of the cycle number may be considered to occur. With the change, the last detected message 49 carrying the cycle number P1 can be determined as the measurement end point of the measurement period T1.

It should be noted that the foregoing is only an example of the measurement end point identification process in combination with two relatively simple rules. The embodiment of the present invention does not specifically limit the addition rule of the cycle number, as long as there are certain regular addition methods. The measurement endpoint can be identified using the above scheme.

In the third mode, the receiving end can also identify the measurement end point by combining the change of the specified duration and the cycle number. After the receiving end recognizes the measurement starting point of the measurement cycle in the manner described above, it starts a timer and determines whether the cycle number has changed before the timing reaches the specified time. If the change occurs, it is identified by the change of the cycle number. The end point is measured and the timing is stopped; if there is no change, the waiting time is reached for the specified length of time, and the specified end time is used to identify the measurement end point. In this way, when the measured message is abnormally transmitted, and the measurement end point cannot be identified by the change of the cycle number, the monitoring process for the measurement cycle is terminated by the specified duration.

In the fourth method, in order to solve the problem that the statistical information acquisition is inaccurate due to the out-of-order transmission of the message, the embodiment of the present invention may further provide a solution for determining the fault-tolerant measurement end point on the basis of the foregoing

methods

1, 2, and 3. Specifically, the receiving end sets an allowable hysteresis parameter, and uses the measurement end point identified by the method one or two or three to determine the fault tolerance measurement end point=measurement end point+allowing hysteresis parameter, wherein the allowable hysteresis parameter can be embodied as allowing the hysteresis duration or allowing the hysteresis Number of texts. That is to say, after reaching the measurement end point determined by one or two or three, wait for a period of time or several messages, and measure the statistical information between the measurement starting point and the end point of the fault-tolerant measurement as the statistics of the corresponding monitoring period. information.

As shown in FIG. 6, the detected

packets

49 and 50 carrying the cycle number P1 are sent out of order during the transmission, and the two are transmitted to the receiving end after carrying the detected message 51 of the cycle number P2. The measured end point of the measured measurement period T1 may be the measured message 48. If it continues to wait for an allowable lag time on this basis, the out-of-

order transmission messages

49, 50 can be counted into the statistical information of the measurement period T1. The accuracy of obtaining statistical information in the embodiment of the present invention is improved.

3. Monitor business flow to obtain statistical information.

After the above two processing actions, the receiving end can obtain the statistical information of the specified measurement period. Because, when calculating the performance measurement results of the network, it is necessary to obtain matching statistics of the originating end and The receiving end can obtain the statistical information of the receiving end according to the pre-negotiation with the transmitting end, and the statistic information of the specified measuring period can be obtained as needed. The embodiment of the present invention does not specifically limit this.

As an example, the receiving end obtains the statistics of the specified measurement period, which can be understood as: the receiving end acquires the period number carried in the received packet, and if the period number corresponds to the specified measurement period, the embodiment of the present invention The solution obtains the statistical information of the specified measurement period; and if it finds that the period number corresponds to the non-designated measurement period, the statistics of the non-designated measurement period are stopped.

It should be noted that the network performance measurement can be embodied in different measurement contents, and the statistical information that needs to be acquired for different measurement contents is also different. The process of obtaining the statistical information is explained below in combination with the measurement content.

(1) If the measurement content is the number of lost packets, the corresponding statistical information is the number of received packets. The receiving end can obtain the statistical information by counting the number of the measured packets carrying the same periodic number in the specified measurement period.

When the receiving end receives the service flow transmitted by the transmitting end, the measurement starting point of each measurement period can be determined in the manner described above. As shown in FIG. 2-1, the measured packet 51 carrying the period number P2 is determined as After measuring the measurement starting point of the period T2, the timer and the counter are started, and the counter is incremented by 1 every time a measured message carrying the period number P2 is received, and the process is continued until the timing reaches the specified period of time (ie, the measurement period is reached). The measurement end point is to stop the counting of the time, and the number of the received packets is used as the number of received packets corresponding to the measurement period T2, and the process of obtaining the statistical information based on the cycle number in the embodiment of the present invention is implemented.

Alternatively, in the above example, after determining the measurement starting point of the measurement period T2, a counter is started, and the measurement end point is determined according to the cycle number change, and the number of packets counted by the counter between the measurement start point and the measurement end point is determined as the measurement period T2. The number of received messages.

Alternatively, the receiving end may also identify the measurement end point by using the change of the specified duration and the cycle number in the manner of identifying the measurement end point above, and the number of packets counted between the measurement start point and the measurement end point as the measurement period. Number of received messages.

Alternatively, the receiving end can also use the above method 4 for identifying the measurement end point, set the fault-tolerant measurement end point, and use the number of packets counted by the counter between the measurement start point and the fault-tolerant measurement end point as the number of received packets corresponding to the measurement period. The embodiment of the present invention does not specifically limit the manner of identifying the measurement end point, and may select an appropriate manner to identify the measurement end point in combination with the actual application scenario.

The process of improving the accuracy of obtaining statistical information in the embodiment of the present invention will be explained below in conjunction with the example of the out-of-order transmission.

If the receiving end records the number of received packets of the measurement period T1 by using the counter 1, after receiving the message 48 carrying the cycle number P1 and the message 51 carrying the cycle number P2, the counter 2 can be started to record the measurement period T2. At the same time, the counter 1 does not stop counting immediately, but continues to wait to receive the message carrying the P1, and judges whether the allowable lag parameter is currently satisfied. If it is satisfied, the counting is stopped, and the current The result of the recording is taken as the number of received messages corresponding to the measurement period T1; if not, the process of waiting for reception and judgment is continued. As shown in FIG. 6 , in the process of waiting for the reception of the counter 1 , two

packets

49 and 50 are received again, and it is judged that the cycle numbers carried by the two are both P1, so the two messages can be counted to the measurement. The number of received packets corresponding to the period T1 is such that the problem of inaccurate acquisition of statistical information caused by out-of-order transmission of the packet is solved.

(2) If the measurement content is a delay, the corresponding statistical information is a timestamp, and the receiving end can obtain the statistical information by recording the receiving timestamp of the specified measured message in the specified measurement period. The specified packet is the measured packet with the carrying period number at the specified location.

After determining the measurement starting point of a certain measurement period, the receiving end can record the receiving timestamp of the specified packet according to the pre-negotiation with the transmitting end, and use it as the receiving time of the packet corresponding to the measurement period.

As a preferred solution, the measurement start point of the measurement period is used as the designated position, and the timestamp when the measurement start message is received is recorded. Taking the measurement period T2 shown in FIG. 2-1 as an example, the recorded packet is received. The timestamp of 51; or, any position between the measurement start point and the measurement end point can be used as the designated position to record the time stamp. This embodiment of the present invention does not specifically limit this, as long as the sender and the receiver are pre-negotiated. Specify the location and record the time stamp according to the negotiation.

(3) Other measurement contents. The foregoing is only an example of the measurement content of the packet loss and the delay. In addition, the receiving end can also monitor other traffic information based on the service flow carrying the cycle number according to the embodiment of the present invention. And matching with other statistical information obtained by the sender to obtain network measurement results for other measurement content, which is not illustrated here.

4. Calculate network performance measurement results based on statistical information.

When the network performance is measured by the passive measurement method, the measurement result can be calculated based on the statistical information acquired by the solution of the embodiment of the present invention. As described above, the network performance measurement result may be calculated by the sending end, or may be calculated by the receiving end, or may be calculated by an external device. The embodiment of the present invention may not limit the main body of the measurement result. According to the actual application And set. In addition, it should be noted that the statistical information obtained by monitoring each measurement period can be used to calculate the network performance measurement result, and the network performance measurement result can be calculated by using the sampling information to calculate the network performance measurement result. For example, this is not specifically limited.

According to the above description, the way of characterizing the measurement period by the period number carried by the message enables the receiving end to automatically and easily define the range of the interval, and obtain statistical information based on this, thereby reducing the prior art insertion. The possibility of obtaining inaccurate statistical information caused by abnormal conditions such as packet loss increases the accuracy of calculating network performance measurement results. At the same time, obtaining the statistical information by using the solution of the embodiment of the present invention can also simplify the design of the receiving end and reduce the intervention and cooperation of the outside world in the obtaining process.

Corresponding to the method shown in FIG. 1, the embodiment of the present invention further provides a device for acquiring statistics on the transmitting end side. Referring to the schematic diagram shown in FIG. 7, the device may include:

The setting unit 301 is configured to set a corresponding period number for each measurement period in the at least one measurement period;

The adding unit 302 is configured to add the period number set by the setting unit to a header of the tested packet included in the corresponding measurement period;

The sending unit 303 is configured to send, to the receiving end, the measured packet carrying the period number;

The obtaining unit 304 is configured to obtain, according to the period number, statistical information of a specified measurement period in the at least one measurement period when the sending unit sends the measured packet, where the statistical information is used to calculate a bearer The performance measurement result of the network of the measured message.

Preferably, the setting unit is further configured to divide the measurement period according to a period parameter before setting the measurement period, where the period parameter is a specified duration or specifies a number of packets to be measured. Specifically, the periodic parameter may be pre-configured in the transmitting end, or may be externally input when needed, which may not be specifically limited in this embodiment of the present invention.

Preferably, the adding unit is specifically configured to add the period number to a header of all the tested messages included in the corresponding measurement period; or the adding unit is specifically configured to add the cycle number to The designated test packet is selected from all the tested packets included in the corresponding measurement period according to a preset rule, corresponding to the header of the specified test packet included in the measurement period.

The embodiment of the present invention mainly divides the interval by the cycle number. Therefore, the number of the packets in the service flow carries the cycle number, and the cycle number carried in the packet is also different according to different measurement cycles. with. Specifically, in the solution of the embodiment of the present invention, the cycle number can be carried by the header, and corresponding to the following, the following three ways of adding the cycle number to the header are provided:

The adding unit is specifically configured to add the period number to a hop-by-hop option header or a destination option extension header of the IPv6 header; or the adding unit is specifically configured to add the period number to the IPv4 header. Option field.

After the test packet carries the cycle number, the passive measurement device at the transmitting end can transmit the service flow including the measured packet to the receiving end, and simultaneously monitor and obtain the statistical information of the specified measurement period. In combination with different network measurement contents, the measurement device needs to obtain different statistical information, and the composition of the obtaining unit may be different for different statistical information, which will be exemplified below.

If the measurement content is the number of packets to be discarded, the statistics may be the number of packets to be sent, and the corresponding obtaining unit may be used to collect the number of the packets with the same period number in the specified measurement period.

If the measurement content is a delay, the statistical information may be embodied as a timestamp of the sent packet, and the corresponding obtaining unit may be specifically configured to record a sending timestamp of the specified measured packet in the specified measurement period, where the specified The test packet is the measured packet with the carrying period number at the specified location.

Corresponding to the method shown in FIG. 4, the embodiment of the present invention further provides a device for acquiring statistics on the receiving end side. Referring to the schematic diagram shown in FIG. 8, the device may include:

The receiving unit 401 is configured to receive the measured packet sent by the sending end, where the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period carries the same Cycle number

The obtaining unit 402 is configured to obtain, according to the period number, statistical information of the measurement period, where the statistical information is used to calculate a performance measurement result of a network that carries the measured packet.

The statistic information acquiring device of the transmitting end transmits the measured packet carrying the periodic number to the statistic information acquiring device on the receiving end side, and the receiving end can automatically identify the measuring period of the transmitting end according to the period number carried in the packet, and Get statistics for the specified measurement period. In combination with different network measurement contents, the measurement device should monitor different statistical information, and the composition of the acquisition unit will be different for different statistical information, which will be exemplified below.

If the measurement content is the number of lost packets, the statistics may be the number of received packets, and the corresponding obtaining unit may include: obtaining the sub-units, and collecting statistics on the number of the tested packets carrying the same periodic number in the measurement period.

Further, the obtaining unit may further include: an identifying unit, configured to identify the measurement period according to a change of the period number before the obtaining subunit counts the number of the measured packets; and/or obtain the designation The duration, and the measurement period is identified according to the specified duration.

As a preferred solution, the receiving end may set the allowable hysteresis parameter (which may be embodied as allowing the lag time, or allowing the number of lag messages, etc.), and the obtaining unit may include:

Obtaining a sub-unit, configured to count the number of the tested packets carrying the same cycle number in the measurement period after the adjustment unit is adjusted.

If the measurement content is a time delay, the statistical information may be reflected as a timestamp of the received message, and the corresponding obtaining unit may include: a recording unit, configured to record a receiving timestamp of the specified measured message in the measurement period, The specified test message is a test packet with a carry cycle number located at a specified location, and the specified location is the same as the designated location where the sender records the transmission timestamp.

Further, the embodiment of the present invention further provides a hardware configuration of the statistical information acquiring apparatus. Referring to the schematic diagram of Figure 9, there may be included at least one processor (e.g., a CPU), at least one network interface or other communication interface, memory, and at least one communication bus for enabling connection communication between the devices. The processor is for executing an executable module, such as a computer program, stored in the memory. The memory may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory. The communication connection between the system gateway and at least one other network element is implemented by at least one network interface (which may be wired or wireless), and an Internet, a wide area network, a local network, a metropolitan area network, etc. may be used.

Specifically, when the schematic diagram shown in FIG. 9 is used to implement the function of the statistical information acquiring apparatus on the transmitting side, the memory stores program instructions, and the processor is configured to perform the following steps according to the program instructions:

Setting a corresponding period number for each measurement period in at least one measurement period, and adding the period number to a header of the tested message included in the corresponding measurement period;

And transmitting, to the receiving end, the measured packet carrying the period number, and obtaining, according to the period number, statistical information of the specified measurement period in the at least one measurement period, where the statistical information is used to calculate the bearer The performance measurement result of the network of the message.

As an example, the measurement period is divided according to a period parameter, which is a specified duration or specifies the number of packets to be measured.

Specifically, the processor may add the cycle number to the header of the tested packet included in the corresponding measurement period in the following manner:

Adding the cycle number to the header of all the tested messages included in the corresponding measurement period; or adding the cycle number to the header of the specified test packet included in the corresponding measurement period, the designation being The measurement message is selected from all the tested messages included in the corresponding measurement period according to a preset rule.

The cycle number is added to the hop-by-hop option extension header or the destination option extension header of the IPv6 header; or the cycle number is added to the option field of the IPv4 header.

Specifically, the statistics information is the number of the packets, and the processor may obtain the statistics of the specified measurement period in the following manner: the number of the measured packets carrying the same cycle number in the specified measurement period is counted.

Specifically, the statistical information is a timestamp, and the processor may obtain the statistical information of the specified measurement period in the following manner: recording a transmission timestamp of the specified measured packet in the specified measurement period, where the specified measurement is performed. The packet is the measured packet with the carrying period number at the specified location.

Specifically, when the schematic diagram shown in FIG. 9 is used to implement the function of the statistical information acquiring apparatus on the receiving end side, the memory stores program instructions, and the processor is configured to perform the following steps according to the program instructions:

And receiving the measured packet sent by the sending end, where the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period carries the same period number;

And obtaining, according to the period number, statistics information of the measurement period, where the statistics information is used to calculate a performance measurement result of a network that carries the measured packet.

Specifically, the statistics information is the number of the packets, and the processor may obtain the statistics of the measurement period in the following manner: the number of the measured packets carrying the same cycle number in the measurement period is counted.

As a preferred solution, the processor is further configured to perform: before counting the number of the tested packets carrying the same cycle number in the measurement period:

Identifying a measurement starting point of the measurement period according to the received measured message carrying the first cycle number corresponding to the measurement period;

Identifying a measurement end point of the measurement period according to a change of a cycle number corresponding to the measurement period; and/or obtaining a specified duration, and according to the measurement start point and the specified duration of the measurement period A measurement end point of the measurement period is identified.

Specifically, the statistics information is the number of packets, and the receiving end is provided with an allowable hysteresis parameter, and the processor may obtain the statistical information of the measurement period in the following manner: adjusting the measurement period by using the allowable hysteresis parameter, and after adjusting the statistics The number of measured packets carrying the same cycle number during the measurement period. Wherein, the allowable hysteresis parameter is a number of allowed packets to be allowed to be delayed or allowed to be delayed.

Specifically, the statistical information is a timestamp, and the processor may obtain the statistical information of the measurement period in the following manner: recording a reception timestamp of the specified test packet in the measurement period, where the specified measured message is located The measured packet carrying the cycle number of the specified location, and the specified location is the same as the specified location of the transmission timestamp of the sender.

The inventive arrangements may be described in the general context of computer-executable instructions executed by a computer, such as a program element. Generally, program units include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types. The inventive arrangements can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network. In a distributed computing environment, program units can be located in both local and remote computer storage media including storage devices.

The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment. The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

The embodiments of the present invention have been described in detail above, and the present invention has been described with reference to the specific embodiments. The description of the above embodiments is only for facilitating understanding of the method and device of the present invention. Meanwhile, for those skilled in the art, The present invention is not limited by the scope of the present invention.

Claims

A method for acquiring statistical information, characterized in that the method comprises:

The sending end sets a corresponding period number for each measurement period in the at least one measurement period, and adds the period number to the header of the tested packet included in the corresponding measurement period;

Transmitting, by the sending end, the measured packet carrying the period number to the receiving end, and obtaining, according to the period number, statistical information of the specified measurement period in the at least one measurement period, where the statistical information is used to calculate the bearer The performance measurement result of the network of the measured message.
The method according to claim 1, wherein the measurement period is divided according to a period parameter, and the period parameter is a specified duration or a number of packets to be measured.
The method according to claim 1 or 2, wherein the adding the cycle number to the header of the measured packet included in the corresponding measurement period comprises:

The sending end adds the period number to a header of all the tested messages included in the corresponding measurement period; or

And sending, by the sending end, the period number to a header of the specified test packet included in the corresponding measurement period, where the specified test packet is all the measured reports included in the corresponding measurement period according to a preset rule. Selected in the text.
The method according to any one of claims 1 to 3, wherein the adding the cycle number to a header of the measured packet included in the corresponding measurement period comprises:

The sending end adds the cycle number to a hop-by-hop option extension header or a destination option extension header of the IPv6 header; or

The sender adds the cycle number to an option field of an IPv4 header.
The method according to any one of claims 1 to 4, wherein the statistical information is the number of packets, and the statistical information of the specified measurement period in the at least one measurement period is obtained based on the period number. ,include:

The sending end counts the number of the tested packets carrying the same period number in the specified measurement period.
The method according to any one of claims 1 to 5, wherein the statistical information is a time stamp, and the statistical information of the specified measurement period in the at least one measurement period is obtained based on the period number, include:

The sending end records the sending timestamp of the specified test packet in the specified measurement period, and the specified measured message is the measured packet carrying the period number at the specified location.
A method for acquiring statistical information, characterized in that the method comprises:

The receiving end receives the measured packet sent by the sending end, and the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period carries the same period number;

The receiving end obtains the statistics of the measurement period based on the period number, where the statistics information is used to calculate a performance measurement result of the network that carries the measured packet.
The method according to claim 7, wherein the statistical information is the number of packets, and the receiving end obtains the statistical information of the measurement period based on the period number, including:

The receiving end counts the number of the tested packets carrying the same period number in the measurement period.
The method according to claim 8, wherein before the receiving end counts the number of the measured packets carrying the same period number in the measurement period, the method further includes:

The receiving end identifies the measurement starting point of the measurement period according to the received measured message carrying the first cycle number corresponding to the measurement period;

The receiving end identifies a measurement end point of the measurement period according to a change of a cycle number corresponding to the measurement period; and/or, the receiving end obtains a specified duration, and according to the measurement start point and the specified duration of the measurement period A measurement end point of the measurement period is identified.
The method according to claim 7, wherein the statistical information is the number of packets, and the receiving end is provided with an allowable hysteresis parameter, and the receiving end obtains statistical information of the measurement period based on the cycle number. include:

The receiving end adjusts the measurement period by using the allowable hysteresis parameter, and counts the number of the tested packets carrying the same period number in the adjusted measurement period.
The method according to claim 10, wherein the allowable hysteresis parameter is a allowable hysteresis duration or a hysteresis of the number of packets to be measured.
The method according to any one of claims 7 to 11, wherein the statistical information is a time stamp, and the receiving end obtains the statistical information of the measurement period based on the period number, including:

The receiving end records a receiving timestamp of the specified test packet in the measurement period, where the specified test packet is a measured packet carrying a period number at a specified location, and the specified location and the sending end The specified location for the record send timestamp is the same.
A statistical information acquiring device, characterized in that the device comprises:

a setting unit configured to set a corresponding one for each measurement cycle in at least one measurement cycle Cycle number

a adding unit, configured to add the period number set by the setting unit to a header of the tested packet included in the corresponding measurement period;

a sending unit, configured to send, to the receiving end, the measured packet carrying the period number;

And an obtaining unit, configured to obtain, according to the period number, statistical information of a specified measurement period in the at least one measurement period, where the statistics information is used to calculate the bearer, when the sending unit sends the measured packet The performance measurement result of the network of the measured message.
The device of claim 13 wherein:

The setting unit is further configured to divide the measurement period according to a period parameter before setting the measurement period, where the period parameter is a specified duration or specifies a number of packets to be tested.
Device according to claim 13 or 14, characterized in that

The adding unit is specifically configured to add the period number to a header of all the tested messages included in the corresponding measurement period; or

The adding unit is specifically configured to add the period number to a header of a specified test packet included in a corresponding measurement period, where the specified test packet is included in the corresponding measurement period according to a preset rule. Selected from all the tested messages.
Apparatus according to any one of claims 13 to 15, wherein

The adding unit is specifically configured to add the period number to a hop-by-hop option header or a destination option extension header of the IPv6 header; or

The adding unit is specifically configured to add the period number to an option field of an IPv4 header.
The device according to any one of claims 13 to 16, wherein the statistical information is the number of packets,

The obtaining unit is specifically configured to count the number of the tested packets carrying the same period number in the specified measurement period.
The device according to any one of claims 13 to 16, wherein the statistical information is a time stamp,

The obtaining unit is specifically configured to record a sending timestamp of the specified test packet in the specified measurement period, where the specified test packet is a measured packet with a carrying period number at a specified location.
A statistical information acquiring device, characterized in that the device comprises:

The receiving unit is configured to receive the measured packet sent by the sending end, where the measured packet carries a period number, where the period number corresponds to the measurement period, and the measured packet included in the measurement period Carry the same cycle number;

And an obtaining unit, configured to obtain, according to the period number, statistical information of the measurement period, where the statistical information is used to calculate a performance measurement result of a network that carries the measured packet.
The device according to claim 19, wherein the statistical information is the number of packets, and the obtaining unit comprises:

Obtaining a subunit for counting the number of the tested packets carrying the same period number in the measurement period.
The device according to claim 20, wherein the obtaining unit further comprises:

a starting point identifying unit, configured to identify a measurement starting point of the measurement period according to the received first tested message carrying the period number corresponding to the measurement period;

An end point identifying unit, configured to identify a measurement end point of the measurement period according to a change of a cycle number corresponding to the measurement period; and/or, the receiving end obtains a specified duration, and according to the measurement start point of the measurement period and the The specified duration identifies the measurement endpoint of the measurement period.
The device according to claim 19, wherein the statistical information is a number of packets, and an allowable lag parameter is set, and the obtaining unit comprises:

And an adjusting unit, configured to adjust the measurement period by using the allowable hysteresis parameter, wherein the allowable hysteresis parameter is a allowable hysteresis duration or a number of allowed packets to be delayed;

Obtaining a sub-unit, configured to count the number of the tested packets carrying the same cycle number in the measurement period after the adjustment unit is adjusted.
The device according to any one of claims 19 to 22, wherein the statistical information is a time stamp, and the obtaining unit comprises:

a recording unit, configured to record a received timestamp of the specified test packet in the measurement period, where the specified test packet is a test packet carrying a cycle number at a specified location, and the specified location is sent The specified location of the send record timestamp is the same.