WO2012116551A1

WO2012116551A1 - Multicast performance analysing method and system

Info

Publication number: WO2012116551A1
Application number: PCT/CN2011/081698
Authority: WO
Inventors: 宋晓炜
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-03-02
Filing date: 2011-11-02
Publication date: 2012-09-07
Also published as: CN102123092B; CN102123092A

Abstract

Provided are a multicast performance analysing method and system. The method includes: collecting multicast data sent by a multicast network at the user side, analysing the collected multicast data, and extracting multicast performance parameters; and evaluating the multicast performance of the user according to the extracted multicast performance parameters. Long-term application of a certain number of systems provided in the present invention in the existing network enables the multicast quality of the network to be monitored in real time, and brings convenience to the operation and maintenance of the office.

Description

Multicast performance analysis method and system

Technical field

The present invention relates to the field of communication technologies, and in particular, 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 demand for information services. 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 promising businesses, the multicast service has received unprecedented attention.

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

In general, the following shortcomings exist in the prior art:

1) The multicast performance data on the live network cannot be obtained. Due to the difference in the networking environment, the data obtained by the lab is different from the data of the actual network. According to the statistics of the original multicast data, the administrator can only obtain the data of the user's multicast state transition time and port traffic. Detailed multicast performance data in the network, such as delay, out of order, packet loss, and multicast join delay.

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

3) In the live network, the multicast performance of the network can only be known after the user uses it, and the network status cannot be estimated before the user accesses.

4) The fault warning function in the performance of multicast is lacking. The multicast performance fault in the live network can be discovered only after the user complains. Summary of the invention

It is an object of the present invention to provide a multicast performance analysis method and system for performing performance evaluation on a user's multicast service.

To solve the above technical problem, the present invention provides a multicast performance analysis method, where the method includes:

Collecting multicast data sent by the multicast network on the user side, and analyzing the collected multicast data to extract multicast performance parameters;

The multicast performance of the user is evaluated according to the extracted multicast performance parameter.

The multicast performance parameter includes one of the following parameters or any combination thereof:

Delay, out of order, packet loss, error packets, and multicast join and leave delays.

The steps for extracting multicast performance parameters include:

Calculate delay, out of order, and multicast join and leave delays based on timestamps;

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

The error packet is calculated based on the checksum information.

The step of evaluating the multicast performance of the user according to the extracted multicast performance parameter includes:

The fluctuation curves of packet loss, out of order, and delay are obtained respectively;

The number of lost packets, the number of out-of-orders, and the number of delays exceeding the threshold are counted separately during the specified time; and/or

The average of the multicast join and leave delays is obtained.

The steps of collecting the multicast data sent by the multicast network on the user side include:

The user side performs the access authentication on the user side, sends a multicast join request to the multicast network, and receives the multicast data sent by the multicast network.

The method further includes: when the number of times of packet loss, the number of out-of-orders, or the number of delays exceeding the threshold exceeds the threshold of the alarm, the alarm information is sent to the network management. The invention also provides a multicast performance analysis system, comprising:

a data collection module, configured to collect multicast data sent by the multicast network on the user side; a parameter extraction module configured to analyze the multicast data collected by the data collection module, and extract the group Broadcast performance parameters;

And a performance statistics server, configured to evaluate the multicast performance of the user according to the multicast performance parameter extracted by the parameter extraction module.

The system further includes a multicast service initiation module configured to simulate user access authentication on the user side and send a multicast join request to the multicast network.

The multicast performance parameter extracted by the parameter extraction module includes one of the following parameters or any combination thereof: delay, out of order, packet loss, error packet, and multicast join and leave delay.

The parameter extraction module is configured to extract multicast performance parameters in the following manner:

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

The error packet is calculated based on the checksum information.

The performance statistics server is configured to evaluate the multicast performance of the user by:

The average of the multicast join and leave delays is obtained.

The performance statistics server is further configured to send an alarm message to the network management system when the number of times of packet loss, the number of out-of-order times, or the number of delays exceeding the threshold exceeds the threshold.

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

(1) Compared with the previous test performance data in the laboratory, the present invention can obtain the multicast performance data of the actual users on the current network, and the obtained results are more realistic for different networking devices and different configurations; (2) It is possible to estimate the user's multicast service status before the number is placed, which can effectively reduce user complaints and reduce maintenance costs;

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

(4) A certain amount of the system of the present invention is put into the network for a long time, and the multicast quality of the network can be monitored in real time, which is convenient for the operation and maintenance of the office. BRIEF abstract

The drawings are intended to provide a further understanding of the invention, and are intended to be illustrative of the invention. In the drawing:

FIG. 1 is a flowchart of processing a multicast performance analysis method according to an embodiment of the present invention;

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

The purpose of the present invention is to provide a method and system for user-side multicast performance statistics and fault analysis in view of the above-mentioned deficiencies of the prior art. The core idea of the present invention is: to simulate user multicast services and collect related information on the user side. The information is used to obtain the multicast performance data of the user, so that the performance of the user's multicast service can be evaluated, and further fault diagnosis can be performed.

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

Collecting multicast data sent by the multicast network on the user side, analyzing the collected multicast data, and extracting multicast performance parameters;

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

Further, the multicast performance parameter includes one of the following parameters or any combination thereof: Delay, out of order, packet loss, error packets, and multicast join and leave delays.

Further, the steps of extracting multicast performance parameters include:

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

The error packet is calculated based on the checksum information.

In order to make the technical solutions and advantages of the present invention more comprehensible, the implementation of the technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The specific processing flow of the method of the present invention is as shown in FIG. 1 , and mainly includes the following steps: Step 101 : Function setting and parameter configuration.

The initial parameters required to set the device in this step mainly include access user information, multicast related parameters, and the like.

Step 102: Start a multicast service, including user access authentication and multicast join operation.

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

Step 103: Collect the multicast protocol interaction packet and the multicast service data packet.

In this step, the multicast protocol interaction packet and the multicast service data packet need to be collected, and the collected result can be directly analyzed according to the need, or saved as a file backup.

Step 104: Perform calculation and analysis on the collected data, obtain relevant performance data (parameters), and generate a report.

In this step, the multicast protocol packet and the service traffic of the set are separately calculated and analyzed, including time delay calculation, out-of-order, and multicast join and leave delay, etc., and the packet loss is calculated by the IP field information. The checksum information is calculated as a wrong package, and a data report is generated.

Step 105: Send the report directly to the performance statistics server. In this step, the statistics are sent to the statistics server via the network. At the same time, the statistics can also be read through the local network management.

Step 106: Determine whether the collected data exceeds the early warning threshold. If yes, go to step 107; if not, go to step 108.

Step 107: Send an alarm message to the network management or control center when the collected data exceeds the alarm threshold.

Step 108: This process ends.

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

The multicast service startup module, which can perform user access authentication and multicast join and leave operations after running the module;

The data collection module is configured to collect the multicast protocol interaction packet and the multicast service data packet, and the collection result may be directly analyzed according to requirements, or saved as a file backup;

The parameter extraction module is configured to: perform calculation and analysis on the data collected by the data collection module, and obtain relevant performance data, including delay, out of order, packet loss, and multicast join and leave delay, etc., and generate Data reporting; and send performance data (or data reports) directly to the performance statistics server for performance evaluation and backup;

The performance statistics server is configured to: evaluate the multicast performance, for example, according to the performance parameter report reported by each node device, respectively obtain the fluctuation curves of packet loss, out-of-order, and delay at different time points of different nodes; The number of lost packets, the number of out-of-orders, and the number of delays that exceed the threshold during the specified time; and the mean of the join and leave delays. This result performs performance grading of different nodes, and network performance can be analyzed by performance data of each node. In addition, if the number of consecutive packet loss or the delay time exceeds the threshold, the alarm information can 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) for function setting and parameter configuration.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The present invention may be embodied in various other embodiments without departing from the spirit and scope of the invention. The present invention makes various corresponding changes and modifications, but these corresponding changes and Modifications are intended to fall within the scope of the appended claims.

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any particular combination of hardware and software.

Industrial Applicability Compared with the prior art, the present invention has at least the following beneficial effects: The multicast performance data of the actual user on the current network can be obtained, and the obtained result is more realistic; the multicast service situation of the user can be performed before the number is placed. Estimated, it can effectively reduce user complaints and reduce maintenance costs. Users who complain about performance reasons can collect detailed multicast performance parameters of the user side to facilitate fault analysis; and, in the current network, invest a certain amount of time. The system of the invention can monitor the multicast quality of the network in real time, which is convenient for the operation and maintenance of the office.

Claims

Claim

1. A multicast performance analysis method, including:

2. The method of claim 1 wherein

3. The method of claim 2, wherein

The steps for extracting multicast performance parameters include:

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

The error packet is calculated based on the checksum information.

4. The method of claim 2 or 3, wherein

The fluctuation curves of packet loss, out of order and delay are obtained respectively;

The number of lost packets, the number of out-of-orders, and the number of delays beyond the threshold are counted separately; and/or

The average of the multicast join and leave delays is obtained.

5. The method of claim 1, 2 or 3, wherein

6. The method of claim 4, further comprising:

When the number of times of packet loss, the number of out-of-orders, or the number of delays exceeds the threshold exceeds the threshold, the alarm is sent to the NMS.

7. A multicast performance analysis system, comprising:

8. The system of claim 7, further comprising a multicast service initiation module configured to simulate user access authentication on the user side and to send a multicast join request to the multicast network.

9. The system of claim 7 or 8, wherein

The multicast performance parameter extracted by the parameter extraction module includes one of the following parameters or any combination thereof:

10. The system of claim 9, wherein

The parameter extraction module is configured to extract the multicast performance parameter according to the following manner: calculating a delay, an out-of-order, and a multicast join and leave delay according to a timestamp;

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

The error packet is calculated based on the checksum information.

11. The system of claim 9, wherein

The fluctuation curves of packet loss, out of order, and delay are respectively obtained;

The average of the multicast join and leave delays is obtained.

12. The system of claim 11 wherein: