CN100461712C - A network signalling test method - Google Patents

A network signalling test method Download PDF

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CN100461712C
CN100461712C CN 03146154 CN03146154A CN100461712C CN 100461712 C CN100461712 C CN 100461712C CN 03146154 CN03146154 CN 03146154 CN 03146154 A CN03146154 A CN 03146154A CN 100461712 C CN100461712 C CN 100461712C
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signaling
tracking
network
module
management module
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CN1571368A (en
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何代义
陈荣富
卉 黄
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华为技术有限公司
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Abstract

本发明公开了一种网络信令测试的方法,适用于内容分发网络(CDN),包括:设置与网络运行维护中心通信的管理中心模块,在每个被监测网络设备中设置设备代理模块;设定信令跟踪方式和信令跟踪条件,在启动信令测试后,还包括:a)管理中心模块将设定的跟踪方式和跟踪条件下发给设备代理模块;b)每个收到跟踪方式和跟踪条件的设备代理模块,根据收到的跟踪方式和跟踪条件采集自身所处网络设备在工作过程中的通信信令,并将采集的通信信令作为信令跟踪结果发送给管理中心模块;c)管理中心模块接收并分析所有的信令跟踪结果;d)显示管理中心模块统计分析后的结果。 The present invention discloses a method for testing the network signaling for a content distribution network (the CDN), comprising: a network operation and maintenance center is provided with center communication management module is provided in the device agent module for each monitored network device; provided and signaling a given signaling tracking mode the tracking condition, signaling after starting the test, further comprising: a) the tracking mode the tracking condition and the central management module is set to the device agent module; b) each received tracking mode and tracking condition of the device agent module, collecting the communication network in which the signaling device itself during operation according to the tracking mode and the received tracking condition, and collected as a signaling communication signaling tracking results to the central management module; c) the central management module receives and analyzes all signaling tracking result; D) shows the results of the statistical analysis module management center. 本发明提高CDN网络维护效率,降低网络运维成本,有效保证系统安全性。 The present invention improves the efficiency of network maintenance CDN, reducing network operation and maintenance cost, effective system to ensure security.

Description

一种网络信令测试的方法 A method for testing network signaling

技术领域 FIELD

本发明涉及网络测试技术,具体地说,涉及一种在内容分发网络(CDN) 中的信令测试方法。 The present invention relates to network testing and, particularly, to a method of testing signaling in a content distribution network (CDN) in.

背景技术 Background technique

CDN是为了解决带宽问题而建设的内容分发网络,它的核心思想是把内容推送到距离用户最近的服务器上,从而保证用户的服务质量。 CDN is to solve the bandwidth problem and the construction of a content distribution network, its core idea is to push content to the server closest to the user, thus ensuring the quality of service users.

CDN支持的业务有:视频点播、在线直播、下载、广告插播等。 CDN support the business: video on demand, live online, download, and so on ad spots. 下面以视频点播业务为例,参照图l说明这些业务的基本信令流程。 Below an example video on demand service, described with reference to Figure l the basic signaling flow for these services.

如图1所示,视频点播业务涉及的功能实体包括网络内容提供商的网站服务器(ICP WEBSERVER),网络内容提供商用户管理系统(ICP SMS )、 域名服务器(DNS)、用户请求调度系统(MRB)、边缘服务器(ES)。 1, the functional entity comprises a video on demand service according to a network content provider web server (ICP WEBSERVER), the content provider network user management system (ICP SMS), a domain name server (the DNS), a user request scheduling system (the MRB ), edge server (ES). 其中ICP WEB SERVER、 ICP SMS属于ICP域的设备,其余设备属于CDN域。 Wherein ICP WEB SERVER, ICP SMS devices that belong to the domain of ICP, the remaining part of the device domain CDN. CDN实现用户访问ICP的工作过程如下: CDN achieve user access to ICP works like this:

1 )用户访问ICP的内容,点击网页上视频点播内容的链接。 1) ICP users to access content, click on the link to the video-on-demand content on the page. 此链接所对应的域名为在CDN域专门设置了解析地址的域名。 This link corresponding to the domain name in the CDN field specially set up DNS addresses.

2)浏览器向DNS发起查询该特殊域名的地址请求; 2) browser to initiate a request to query the address of the particular domain name to the DNS;

3 ) DNS根据配置返回CDN中MRB的地址; 3) DNS address according to the CDN configuration MRB in return;

4) 浏览器向本地的MRB发起内容访问请求; 4) browser content to initiate local MRB access request;

5) MRB根据用户访问调度策略,确定提供内容的最优ES,将用户内容访问请求重定向到该最优的ES; 5) MRB ES user access according to the optimum scheduling policy, providing content to determine the contents of the user access request is redirected to the optimal ES;

6) ES从用户请求消息中获取计费相关信息,向指定计费系统进行内容计费; 6) ES receives charging information from a user request message to the billing content specified charging system;

7) ES根据该计费结果,向最终用户提供内容; 7) ES according to the charging result, providing content to end users;

8) 当用户访问内容结束,ES向计费系统发起计费结束请求,终止服务。 8) When the end user access to content, ES sends a charging request to the end of the billing system, termination of service. 可见, 一个CDN网络中通常包括多种类型的设备,如中心服务器、ES、 Visible, a CDN network typically includes a variety of types of devices, such as a central server, ES,

DNS、 MRB。 DNS, MRB. 一个中等规模的CDN网络,设备往往多达几百上千台。 A medium-sized CDN network, equipment is often up to hundreds of thousands. 如果没有一个行之有效的网络测试方法,将给设备维护排障造成很大困难。 Without an effective network testing methods, equipment maintenance and troubleshooting will cause great difficulties.

目前业界也有一些CDN网络测试工具,比较典型的是UNIX命令DIG, DIG是一个监测CDN网络中DNS是否能正确实现域名解析的命令行工具, 它可以在Linux或UNIX下执行。 The industry also has some CDN network testing tool, is typical UNIX command DIG, DIG is a CDN network to monitor whether the correct DNS enables DNS command-line tool that can be executed in Linux or UNIX. CDN中的DNS接收到用户请求消息后, 对用户的域名解析服务器进行跟踪分析,查询详细的解析结果与授权DNS 的IP地址,记录查询时间,并将查询结果返回给用户端。 After the CDN DNS request message received by the user, the user's name servers track and analyze detailed query analysis result with the IP address of the authoritative DNS, time of the query and returns the query results to the client. 借助这些信息,可以检查DNS是否处于正常工作状态,定位故障来源。 With this information, you can check whether the DNS in normal working condition, locate the source of the fault.

可见,现有测试工具DIG存在如下缺点: Seen, conventional test tools DIG has the following disadvantages:

1) 仅能测试与DNS相关的信令,即局限于对网络中的某一台或某一类设备进行跟踪,不能跟踪全网的信令流,无法全面反映网络问题。 1) Test only DNS-related signaling, that is limited to a particular station or network in a certain type of device tracking, you can not track the signaling flow of the whole network, not fully reflect network problems.

2) 由于该工具是提供给最终用户使用的,因此在信息的充分性和安全性方面都不能满足网络管理员进行网络维护的需要。 2) Since the tool is available to end users, so full of information and security can not meet the need for network administrators to network maintenance.

发明内容 SUMMARY

本发明的主要目的在于提供一种信令测试方法,使其能全程跟踪用户信令,全面及时地反映网络设备在信令处理过程中出现的问题,满足了网络管理员进行网络维护的需要。 The main object of the invention to provide a method for signaling test, signaling to enable user tracking, comprehensive and timely reflection of network equipment problems arise in the signaling process, to meet the needs of network administrators network maintenance.

为了达到上述目的,本发明实现网络信令测试方法的工作过程为,设置与网络运行维护中心通信的管理中心模块,在每个被监测网络设备中设置设备代理模块;并设定信令跟踪方式和信令跟踪条件,在启动信令测试后,该方法还包括如下步骤: To achieve the above object, the present invention enables a method of testing network signaling the work process, network operation and maintenance center is provided with center communication management module is provided in the device agent module for each monitored network device; and signaling set tracking mode and tracking condition signaling, signaling after starting the test, the method further comprising the steps of:

a. 管理中心模块将所设定的跟踪方式和跟踪条件下发给设备代理模块; . A central management module device agent module and sent to the tracking mode the tracking condition set;

b. 每个收到跟踪方式和跟踪条件的设备代理模块,根据收到的跟踪方式和 b. Each receive tracking mode and the tracking condition of the device agent module, the tracking mode and the received

跟踪条件采集自身所处网络设备在工作过程中需要测试的通信信令,并将所采 Tracking condition acquisition device communication signaling network itself located in the work process to be tested, and the collected

集的通信信令作为信令跟踪结果发送给管理中心模块; Signaling communication set as the tracking results to the signaling management center module;

c. 管理中心模块接收并分析所有的信令跟踪结果; . C central management module receives and analyzes all signaling tracking result;

d. 显示管理中心模块统计分析后的结果。 d. shows the results of the statistical analysis after the central management module.

其中,信令跟踪方式包括:通用信令跟踪、端口信令跟踪与特定信令类型跟踪,信令跟踪条件包括:被跟踪用户的网际协议(IP)地址、设备标识(ID)、指定信令的类型。 Wherein the signaling tracking mode comprising: a common signaling tracking, tracing and tracking a particular signaling port signaling type, the signaling tracking condition comprising: track a user's Internet Protocol (IP) address, a device identifier (ID), the signaling protocol type.

其中,设备代理模块嵌在被跟踪的设备中,即DNS、 MRB与ES。 Wherein the device is embedded in the device agent module being traced, i.e., DNS, MRB and ES. 所述管理中心模块设置在网络运行维护中心,管理中心模块与设备代理模块的通信内容是承载在SNMP报文上的。 The central management module is provided in the network operation and maintenance center, and the communication module content management center device agent module is carried on SNMP packets.

其中,信令跟踪结果的内容包括:设备ID、时间戳、用户IP地址、信令类型、跟踪信令详细描述、异常原因描述、用户请求的统一资源定位(URL ) 等。 Wherein, the signaling trace results include: device ID, time stamp, user IP address, signaling type, tracking detailed description of signaling, abnormal reasons described, a Uniform Resource Locator (URL) and the like requested by the user.

上述方案中,步骤c中所述管理中心模块接收并分析所有的信令跟踪结果包括:管理中心模块将每个设备代理模块发送来的信令跟踪结果保存到数据库, 并对信令跟踪结果进行统计分析。 In the above embodiment, the step c module management center receives and analyzes all signaling tracking results include: central management module holds the transmission device to each signaling agent tracking result to the database module, and signaling trace results Statistical Analysis.

该方法进一步包括:管理中心模块下发终止命令到设备代理模块,设备代理模块停止釆集自身所处网络设备在工作过程中的通信信令。 The method further comprising: a central management module issued a termination command to the device agent module, a signaling device agent module stops communication during operation of the network devices which preclude their own set.

本发明通过对从用户请求进入CDN到离开CDN的全流程跟踪,提供全面完整的信息,为CDN这种较复杂的网络提供了一种的测试排错工具, 大大提高了维护效率、降低了网络运维成本。 The invention of a request from the user to enter the CDN CDN to leave the whole process of tracking, to provide full and complete information, provides a troubleshooting tool to test this more complex CDN network, greatly improving maintenance efficiency and reduce network operation and maintenance costs.

本发明信令跟踪是可控的,网络管理员通过设置可以开启和关闭信令跟踪,避免黑客利用跟踪工具攻击设备,从而有效保证系统的安全性。 The present invention is controllable tracking signaling, the network manager can be opened and closed by setting the signaling tracking, tracking tools to avoid attacks by hackers apparatus, so as to effectively ensure the security of the system.

附图说明 BRIEF DESCRIPTION

图1是CDN网络信令流程图; FIG 1 is a flowchart CDN network signaling;

图2是本发明的软件逻辑结构框图; FIG 2 is a block diagram showing the software logic of the present invention;

图3是本发明信令跟踪流程图。 FIG 3 is a signaling flowchart according to the present invention follow.

具体实施方式 Detailed ways

为使本发明的目的、技术方案及优点更加清楚明白,以下参照附图对本发明进一步详细说明。 For purposes of the present invention, technical solutions and advantages clearer, the accompanying drawings of the present invention is described in further detail below with reference.

图2是本发明的软件逻辑结构框图,本发明实现信令跟踪的软件结构包括管理中心模块和设备代理模块,设备代理模块负责根据设置的跟踪方式与跟踪条件收集被跟踪设备在工作过程中的通信信令,管理中心模块负责处理设备代理模块收集的信令。 FIG 2 is a block diagram showing the software logic of the present invention, the software architecture of the present invention for tracking signaling device includes a management agent module and the central module, the device agent module is responsible for collecting and tracking condition is tracked according to the tracking device provided in the work process communication signaling, the signaling processing module is responsible for central management agent module collection apparatus. 如图2所示,管理中心模块嵌入到CDN的运行维护中心(OMC)中,也可以嵌入到能与OMC进行通信的独立的服务器中, 设备代理模块嵌入到所要跟踪的设备中,例如DNS、 ES、 MRB,管理中心模块与设备代理模块之间通过简单邮件管理协议(SNMP)协议进行通信, 客户端与OMC通过超文本传输协议(HTTP)协议通信。 2, the central management module is embedded into the CDN operation and maintenance center (OMC) may also be embedded in a separate server can communicate with the OMC, the device agent module is embedded in the device to be tracked, such as DNS, communication protocol to communicate, the client and the OMC through the hypertext transfer protocol (HTTP) between ES, MRB, the device management agent module and central module via simple Mail management protocol (SNMP) protocol.

图3是本发明信令跟踪流程图。 FIG 3 is a signaling flowchart according to the present invention follow. 如图3所示,本发明的信令跟踪流程包括以下步骤: " 3, the signaling tracking process of the invention comprises the steps of: "

步骤301:启动信令跟踪,即在整个网络的维护终端上设定跟踪方式与跟踪条件,开始信令跟踪。 Step 301: Start signaling tracking, i.e., the tracking mode is set in the tracking condition of the entire network maintenance terminal, signaling start tracking. 其中,跟踪方式分为: Among them, tracking modes:

a) 通用信令跟踪:跟踪指定用户的所有信令类型。 a) General signaling tracing: track all signaling type specified user.

b) 端口信令跟踪:每次观察某一设备的指定端口的所有信令的变化情况,对观察设备间的配合情况非常有用。 b) signaling trace port: a designated port each time the device changes observed all signaling, it is useful for the fit between the observation apparatus.

c) 特定信令类型跟踪:只对指定的信令类型进行跟踪,过滤其他无关的信令类型。 c) tracking specific signaling: only the specified type of tracking signaling, other signaling regardless of type of filter.

信令跟踪条件包括:被跟踪用户的IP地址、设备ID、指定信令的类型。 Signaling tracking condition comprising: tracked user's IP address, type of device ID, designated signaling. 步骤302:管理中心模块通知设备代理模块。 Step 302: the central management module notifies the device agent module. 管理中心模块将所设定的 Center management module set

跟踪条件、跟踪方式下发给设备代理模块。 Track conditions, to the device agent module tracking mode.

步骤303:设备代理模块收集信息。 Step 303: The device agent module to collect information. 每个收到跟踪命令的设备代理模块 Each received command tracking device agent module

响应管理中心模块的命令,根据收到的跟踪方式与跟踪条件收集设备在工作 Response command management module, the collection device according to the working mode with tracking the received tracking condition

过程中的通信信令,并将信令跟踪结果发送到管理中心模块。 Process communication signaling, the signaling and the results are sent to the tracking center management module.

设备代理模块可根据需要在被监控设备信令流的每个处理环节设置不 The device agent module can not be set in each processing stage is a signaling flow monitoring device

同的监控点,设备代理模块从监控点收集的信息包括:正常处理信息和异常处理信息,异常处理信息中详细说明异常原因。 With the monitoring point, the information collected from the device agent module comprising monitoring points: normal process information and exception process information and exception process information described in detail cause of the abnormality. 不同设备设置的监控点与相应的处理方式如下表1所示。 Monitoring points different devices provided with a corresponding treatment in Table 1 below.

<table>table see original document page 8</column></row> <table>表1 <Table> table see original document page 8 </ column> </ row> <table> TABLE 1

OMC与设备之间采用标准的SNMP协议,设备代理模块将信令跟踪结果承载在SNMP报文之上发送到管理中心模块。 A standard SNMP protocol between the OMC and the device, the device agent module bearer signaling tracking results to the central management module transmits over SNMP packets.

步骤304:管理中心模块处理跟踪结果。 Step 304: the central management module processes the tracking result. 管理中心模块将各个设备代理模块收集的跟踪结果保存到数据库,并对跟踪结果进行统计分析。 Center management module to save the results of the individual tracking device agent module collects to the database, and track the results of statistical analysis.

步骤305: OMC显示处理结果。 Step 305: OMC processing result is displayed. OMC将各个设备代理模块收集的跟踪结果输出到WEB浏览器,以方便管理员进行设备操作与维护。 OMC outputs trace the results of each device agent module to collect the WEB browser to facilitate administrator to operate and maintain equipment. 跟踪结果包括:设备ID、时间戳、用户IP地址、信令类型、跟踪信令详细描述、异常原因描述、用户请求的URL,保存的数据可以按关键字段进行检索,并将管理中心模块的统计分析结果以报表或者折线图或者直方图的形式输出浏览器。 Results tracking comprising: a device ID, time stamp, user IP address, signaling type, tracking detailed description of signaling, abnormal reasons described, URL requested by the user, the stored data can be searched by keyword segment, and the central management module statistical analysis results to report, or line chart or histogram in the form of an output browser.

步骤306:终止信令跟踪。 Step 306: terminating signaling tracking. 维护终端停止跟踪,管理中心模块根据设置下发终止命令到设备代理模块,设备代理模块停止信令跟踪。 Stops tracking maintenance terminal, central management module to send a termination command according to the device agent module is provided, the device agent module stops signaling tracking.

下面是本发明在实际CDN网络环境中的应用实例,在网络维护时,发现某ICP用户,帐号合法,且帐户余额充足,但是消费内容时却拒绝服务。 The following are examples of the invention in practical application CDN network environment, network maintenance at the time, we found a ICP user account is legitimate and sufficient account balance, but the consumption of content Shique denial of service. 因此,启动信令跟踪,过程如下: Thus, the tracking start signaling, as follows:

步骤l:启动信令跟踪,设定跟踪方式为通用信令跟踪,设定跟踪条件为被跟踪用户的IP地址。 Step l: Start signaling tracking, tracking mode is set as the common signaling tracking, tracking condition is set to the IP address of the user being tracked.

步骤2:管理中心模块通知设备代理模块进行跟踪。 Step 2: center management module notifies the device agent module for tracking. 管理中心模块将所设定的跟踪条件、跟踪方式下发给ES、 MRB、 DNS设备中的设备代理模块。 The central management module set tracking condition, issued ES, MRB, DNS proxy device module device tracking mode.

步骤3:设备代理模块收集信息。 Step 3: The device agent module to collect information. 每个收到跟踪命令的设备代理模块响应管理中心模块的命令,根据收到的跟踪方式与跟踪条件收集设备在工作过程中的通信信令,并将信令跟踪结果发送到管理中心模块。 Each device agent module receives the command response to a command center tracking management module, transmitted to the central management module according to the tracking mode and the tracking condition signaling device for communicating the received collected during operation, and signaling tracking results.

步骤4:管理中心模块处理跟踪结果。 Step 4: Central management module processes the tracking result. 管理中心模块将各个设备代理模块收集的跟踪结果保存到数据库,并对跟踪结果进行统计分析。 Center management module to save the results of the individual tracking device agent module collects to the database, and track the results of statistical analysis.

步骤5: OMC显示处理结果。 Step 5: OMC processing result is displayed. 根据分析结果显示:ES向ICP SMS发送计费请求中的计费信息与ES收到的重定向到自身的用户请求相应信息不一致,进一步分析,发现是ES对接收请求信息的字段有长度限制,ICP重定向到ES的用户请求信息因超过规定长度被截断,因而造成认证计费失败。 The analysis showed: ES ICP SMS sends the charging information to redirect ES charging request received user request to the corresponding information itself is inconsistent, further analysis, found ES limited length of the information field of the received request, ICP ES redirected to the user request information for exceeding the predetermined length is cut off, thereby causing failure of authentication and accounting. 这里,ES向ICPSMS发送的计费信息是指图1过程6包含在用户请求URL 中的信息;ES收到的用户请求相应信息是指图1过程5包含在用户请求URL 中的信息。 Here, the billing information is sent to the ES ICPSMS means 6 in FIG. 1 process the information contained in the URL of the user request; ES user information corresponding to the received request information is included in the FIG. 1 process 5 the user request URL.

步骤6:终止信令跟踪,修改ES中字段长度约束,从而解决问题。 Step 6: terminating signaling tracking, ES modify the field length constraints, to solve the problem.

Claims (9)

1、一种网络信令测试的方法,适用于内容分发网络,其特征在于,设置与网络运行维护中心通信的管理中心模块,在每个被监测网络设备中设置设备代理模块;并设定信令跟踪方式和信令跟踪条件,在启动信令测试后,该方法还包括如下步骤: 1, network signaling method of testing for a content distribution network, wherein the network operation and maintenance center is provided with center communication management module is provided in the device agent module for each monitored network device; and setting information order tracking mode and the tracking condition signaling, signaling after starting the test, the method further comprising the steps of:
2、 根据权利要求1所述的方法,其特征在于,所述管理中心模块与设备代理模块之间的通信承载于简单网络管理协议报文上。 2. The method according to claim 1, characterized in that said management protocol management message communication between the central module and the device agent module carried simple network.
3、 根据权利要求1所述的方法,其特征在于,所述信令跟踪方式为:通用信令跟踪、或特定信令类型跟踪、或端口信令跟踪、或其任意组合。 3. The method according to claim 1, wherein the signaling trace way: General signaling tracking, tracking or specific signaling, or signaling trace port, or any combination thereof.
4、 根据权利要求1所述的方法,其特征在于,所述信令跟踪条件包括:被跟踪用户的网际协议地址、或设备标识、或指定信令类型、或其任意组合。 4. The method of claim 1, wherein the signaling tracking condition comprising: track a user's Internet Protocol address or device identification, or specify the type of signaling, or any combination thereof.
5、 根据权利要求1所述的方法,其特征在于,所述设备代理模块内嵌在边缘服务器、或域名服务器、或用户请求调度系统中。 5. The method according to claim 1, characterized in that, the device agent module is embedded in the edge server, or domain name server, or a user request scheduling system.
6、 根据权利要求1所述的方法,其特征在于,所述管理中心模块设置在网络运行维护中心。 6. The method of claim 1, wherein said central management module is provided in the network operation and maintenance center.
7、 根据权利要求1所述的方法,其特征在于,所述信令跟踪结果包括设备标识、时间戳、用户网际协议地址、信令类型、跟踪信令详细描述、异常原因描述、用户请求的统一资源定位。 7. The method according to claim 1, wherein the signaling apparatus comprises a tracking result identifier, a time stamp, user internet protocol address, the type of signaling, the signaling trace detailed description, description of error cause, the user request uniform resource Locator.
8、 根据权利要求1所述的方法,其特征在于,步骤c中所述管理中心模块接收并分析所有的信令跟踪结果包括:管理中心模块将每个设备代理模块发送来的信令跟踪结果保存到数据库,并对信令跟踪结果进行统计分析。 8. The method of claim 1, wherein step (c) said central management module receives and analyzes all signaling tracking results include: central management module sends to each signaling device agent module tracks results saved to the database, track and signaling the results were statistically analyzed.
9、根据权利要求1所述的方法,其特征在于,该方法进一步包括:管理中心模块下发终止命令到设备代理模块,设备代理模块停止采集自身所处网络设备在工作过程中的通信信令。 9. The method according to claim 1, characterized in that, the method further comprising: a termination command is issued to the central management module device agent module, the device agent module itself to stop the acquisition of communication signaling network devices located in the working process .
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