CN102123092B - A kind of multicast performance analytical method and system - Google Patents

Abstract

The invention discloses a kind of multicast performance analytical method and system, gather the multicast packet that multicast network issues in user side, and the multicast packet collected is analyzed, extract multicast performance parameter; The multicast performance of described multicast performance parameter to described user according to extracting is evaluated.Adopt the present invention can obtain the multicast performance data of actual user on existing network, for different networking equipment and different configuration, make the result of acquisition more true, thus can evaluate network performance better.

Description

Method and system for analyzing multicast performance

technical field

The present invention relates to the technical field of communication, and more specifically, to a multicast performance analysis method and system.

Background technique

With the continuous development of broadband technology, traditional data services have been difficult to meet people's needs for information services, and services such as video on demand, distance learning, news release, and Internet TV will become the focus of a new round of operational competition. As one of the most potential services, the multicast service has received unprecedented attention.

Multicast service operations need to extract and evaluate user multicast service performance data. For problematic complaint user ports, data collection and fault analysis are required. The current multicast service data collection is mainly implemented on the network equipment, by extracting the time of user multicast state transition and port traffic as the basis for billing and the log record of the user's use process. In addition, the multicast traffic information can also be extracted on the user side device for charging. However, various parameters related to specific multicast performance can only be obtained by instruments in the laboratory.

Generally, there are mainly following deficiencies in the prior art:

1) The multicast performance data on the live network cannot be obtained. Due to differences in networking environments, there are differences between the data obtained in the laboratory and the actual network data. According to the original multicast data statistics, the bureau can only obtain the time Detailed multicast performance data in the network, such as delay, out-of-order, packet loss, and multicast join and leave delays.

2) When there is a user complaint, it is difficult to collect specific multicast performance data information, but only relying on the seen multicast results, such as mosaics, cannot accurately locate the cause of the fault, which is not conducive to quick resolution of the fault.

3) In the current network, the multicast performance status of the network can only be known after users use it, and the network status cannot be estimated before users access it.

4) There is a lack of early warning function for multicast performance failures, and multicast performance failures in the live network can only be found after complaints from users.

Contents of the invention

The technical problem solved by the present invention is to provide a multicast performance analysis method and system to evaluate the performance of the user's multicast service.

In order to solve the above technical problems, the present invention provides a multicast performance analysis method, the method comprising:

Collect multicast data delivered by the multicast network on the user side, analyze the collected multicast data, and extract multicast performance parameters;

Evaluate the user's multicast performance according to the extracted multicast performance parameters.

Further, the multicast performance parameters include one or any combination of the following parameters:

Delay, disorder, packet loss, error packet, multicast join and leave delay.

Further, the extraction of multicast performance parameters specifically includes:

Calculate the delay, out-of-order and multicast join and leave delays according to the timestamp;

Calculate packet loss based on IP field information; and/or

Calculate error packets based on checksum information.

Further, evaluating the user's multicast performance according to the extracted multicast performance parameters includes:

Obtain the fluctuation curve of packet loss, out-of-sequence, and delay;

Count the number of packet loss, out-of-sequence, and delay times exceeding the threshold within a specified time; and/or

Get the mean value of the multicast join and leave delay.

Further, the collection of multicast data issued by the multicast network at the user side includes:

Simulating the user on the user side to perform access authentication, sending a multicast join request to the multicast network, and receiving multicast data delivered by the multicast network.

Further, the method also includes:

When the number of counted packet loss, out-of-sequence, and delay numbers exceeding the threshold within the specified time exceeds the warning threshold, an alarm message is sent to the network manager.

The present invention also provides a multicast performance analysis system, said system comprising:

The data collection module is used to collect the multicast data issued by the multicast network on the user side;

The parameter extraction module is used to analyze the collected multicast data and extract multicast performance parameters;

A performance statistics server, configured to evaluate the user's multicast performance according to the multicast performance parameters extracted by the parameter extraction module.

Further, the system further includes a multicast service initiation module, which is used to simulate a user to perform access authentication on the user side, and send a multicast join request to the multicast network.

Further, the parameter extraction module is used to extract one or any combination of the following multicast performance parameters:

Delay, disorder, packet loss, error packet, multicast join and leave delay.

Further, the parameter extraction module is used to extract multicast performance parameters in the following manner:

Calculate the delay, out-of-order and multicast join and leave delays according to the timestamp;

Calculate packet loss based on IP field information; and/or

Calculate error packets based on checksum information.

Further, the performance statistics server is configured to evaluate the user's multicast performance as follows according to the extracted multicast performance parameters:

Obtain the fluctuation curve of packet loss, out-of-sequence, and delay;

Count the number of packet loss, out-of-sequence, and delay times exceeding the threshold within a specified time; and/or

Get the mean value of the multicast join and leave delay.

Further, the performance statistics server is further configured to send an alarm message to the network manager when the number of counted packet loss, out-of-sequence, and delay numbers exceeding a threshold within the specified time exceeds an early warning threshold.

From the above, the present invention has at least the following beneficial effects:

(1) Compared with the performance data that can only be tested by instruments in the laboratory before, the multicast performance data of actual users on the live network can be obtained by using the present invention, and the obtained results are more realistic for different networking equipment and different configurations;

(2) The user's multicast service situation can be estimated before number allocation, which can effectively reduce user complaints and reduce maintenance costs;

(3) For users who complain due to performance reasons, the present invention can be used to collect detailed multicast performance parameters on the user side to facilitate fault analysis;

(4) A certain amount of the system of the present invention has been invested in the existing network for a long time, which can monitor the multicast quality of the network in real time, which is convenient for the bureau to operate and maintain.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the processing flowchart of the multicast performance analysis method of the embodiment of the present invention;

FIG. 2 is a schematic composition diagram of a multicast performance analysis system according to an embodiment of the present invention.

Detailed ways

The purpose of the present invention is to address the deficiencies of the prior art described above, to propose a method and system for user-side multicast performance statistics and fault analysis, the core idea of which is to collect relevant information on the user side by simulating user multicast services , to obtain the user's multicast performance data, so as to evaluate the performance of the user's multicast service, and further perform fault diagnosis.

Based on the above ideas, the present invention provides a multicast performance analysis method, specifically adopting the following technical solutions:

Collect multicast data delivered by the multicast network on the user side, analyze the collected multicast data, and extract multicast performance parameters;

Evaluate the user's multicast performance according to the extracted multicast performance parameters.

Wherein, the multicast data delivered by the multicast network includes: a multicast protocol packet and a multicast service data packet.

Further, the multicast performance parameters include one or any combination of the following parameters:

Delay, disorder, packet loss, error packet, multicast join or leave delay.

Further, the extraction of multicast performance parameters specifically includes:

Calculate the delay, out-of-order and multicast join and leave delays according to the timestamp;

Calculate packet loss based on IP field information; and/or

Calculate error packets based on checksum information.

Further, the collection of multicast data issued by the multicast network at the user side includes:

Simulating the user on the user side to perform access authentication, sending a multicast join request to the multicast network, and receiving multicast data delivered by the multicast network.

In order to make the technical solution and advantages of the present invention clearer, the implementation of the technical solution of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

The specific processing flow of the method of the present invention is as shown in Figure 1, mainly comprises the following steps:

Step 101: function setting and parameter configuration.

In this step, the initial parameters of the device that need to be set mainly include access user information, multicast related parameters, and the like.

Step 102: Start the multicast service, including user access authentication and multicast join operations.

This step is mainly to simulate the user to perform an access authentication operation, and then send a multicast join packet to receive multicast service traffic.

Step 103: Collecting multicast protocol interaction packets and multicast service data packets.

In this step, multicast protocol interaction packets and multicast service data packets need to be collected, and the collected results can be directly analyzed as required, or saved as files for backup.

Step 104: Calculate and analyze the collected data, obtain relevant performance data (parameters), and generate a report.

In this step, the multicast protocol packets and business traffic that need to be collected are calculated and analyzed separately, including calculating the delay, out-of-sequence, and multicast joining and leaving delays from the timestamp, calculating packet loss from the IP field information, and calculating the packet loss from the checksum Information calculation error package, etc., generate data reports.

Step 105: Send the report directly to the performance statistics server.

In this step, the statistical results need to be sent to the statistical server via the network. At the same time, the statistical results can also be read through the local network management system.

Step 106: Determine whether the collected data exceeds the warning threshold, if so, execute step 107; otherwise, execute step 108.

Step 107: When the collected data exceeds the warning threshold, send warning information to the network management or control center.

Step 108: This process ends.

As shown in Figure 2, the multicast performance analysis system of the embodiment of the present invention mainly includes:

Multicast service startup module, which can perform user access authentication and multicast join and leave operations after running.

The data collection module collects multicast protocol interaction packets and multicast service data packets, and the collection results can be directly analyzed as required, or saved as file backups.

The parameter extraction module is used to calculate and analyze the collected data, obtain relevant performance data, including delay, out-of-order, packet loss, and multicast join and leave delay, etc., and can generate data reports; and the performance data ( or data reports) directly to the performance statistics server for performance evaluation and backup.

The performance statistics server is used to evaluate the multicast performance. For example, according to the performance parameter reports reported by each node device, the fluctuation curves of packet loss, out-of-sequence, and delay at different nodes corresponding to different time points are obtained; the number of times the number of packet loss, out-of-order, and delay exceeds the threshold within a specified time is counted ; and calculate the mean value of joining and leaving delays, etc. Based on this result, the performance of different nodes can be graded, and the network performance can be analyzed based on the performance data of each node. In addition, if the number of consecutive packet loss or time delay exceeds the set early warning threshold, an alarm message can also be sent to the network management or control center.

In addition, the multicast performance analysis system of the present invention can also provide a local network management interface and a remote management channel (not shown in the figure) for function setting and parameter configuration.

The above are only preferred implementation examples of the present invention, and are not intended to limit the present invention. The present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can Various corresponding changes and modifications are made in the present invention, but these corresponding changes and modifications should all belong to the protection scope of the appended claims of the present invention.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

Claims (6)

1. A multicast performance analysis method, characterized in that the method comprises: Collecting multicast data delivered by the multicast network on the user side, including: simulating a user on the user side to perform access authentication, sending a multicast join request to the multicast network, and receiving multicast data delivered by the multicast network ; And analyze the collected multicast data, and extract the multicast performance parameters; Evaluate the user's multicast performance according to the extracted multicast performance parameters, specifically including: obtaining the fluctuation curve of packet loss, out-of-order, and time delay; counting the packet loss, out-of-order, and time delay within a specified time The number of times the number exceeds the threshold; and/or obtain the mean value of the multicast join and leave delay; When the number of counted packet loss, out-of-sequence, and delay numbers exceeding the threshold within the specified time exceeds the warning threshold, an alarm message is sent to the network manager. 2. The method of claim 1, wherein The multicast performance parameters include one or any combination of the following parameters: Delay, disorder, packet loss, error packet, multicast join and leave delay. 3. The method of claim 2, wherein The extraction of multicast performance parameters specifically includes: Calculate the delay, out-of-order and multicast join and leave delays according to the timestamp; Calculate packet loss based on IP field information; and/or Calculate error packets based on checksum information. 4. A multicast performance analysis system, characterized in that the system comprises: The multicast service starting module is used to simulate the user on the user side to perform access authentication, and send a multicast join request to the multicast network; The data collection module is used to collect the multicast data issued by the multicast network on the user side; The parameter extraction module is used to analyze the collected multicast data and extract multicast performance parameters; The performance statistics server is used to evaluate the multicast performance of the user according to the multicast performance parameters extracted by the parameter extraction module: obtain the fluctuation curves of packet loss, out-of-order, and time delay, and count the The number of packet loss, out-of-sequence, and delay times exceeds the threshold, and/or obtain the average value of the multicast join and leave delay; it is also used when the number of packet loss, out-of-order, and delay in the specified time exceeds When the number of thresholds exceeds the warning threshold, an alarm message is sent to the network management system. 5. The system of claim 4, wherein: The parameter extraction module is used to extract one of the following multicast performance parameters or any combination thereof: Delay, disorder, packet loss, error packet, multicast join and leave delay. 6. The system of claim 5, wherein: The parameter extraction module is used to extract multicast performance parameters in the following manner: Calculate the delay, out-of-order and multicast join and leave delays according to the timestamp; Calculate packet loss based on IP field information; and/or Calculate error packets based on checksum information.