CN1588881A - Method and device for controlling close ring feedback in IP network service quality management system - Google Patents

Method and device for controlling close ring feedback in IP network service quality management system Download PDF

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CN1588881A
CN1588881A CN 200410062311 CN200410062311A CN1588881A CN 1588881 A CN1588881 A CN 1588881A CN 200410062311 CN200410062311 CN 200410062311 CN 200410062311 A CN200410062311 A CN 200410062311A CN 1588881 A CN1588881 A CN 1588881A
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CN100459514C (en
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崔毅东
焦利
王文东
林宇
阙喜戎
黄晓慧
田慧蓉
肖峻峰
程时端
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Beijing University of Posts and Telecommunications
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Abstract

一种IP网络服务质量管理系统中闭环反馈的控制方法和装置,该方法是用网络测量装置采集IP网络的运行状态数据,进而分析这些运行状态数据得到网络规划决策数据,再根据这些规划决策数据对IP网络实施调整,以及判断是否接纳新的用户业务;即每个用户业务进入IP网络之前,必须通过接纳控制装置的许可,而接纳控制装置判断的依据——网络规划的决策数据则是对网络的实际运行状态参数进行实时采集、分析、规划得到的。闭环反馈控制有两种方法:流量类规划和网络瓶颈带宽规划。该方法改善了目前IP网络服务质量保障过程中依靠人工操作的低水平运维现状,降低了服务质量保障对网络层异构技术的依赖性,能够保障业务的服务质量,使得网络处于健康状态运行。

Figure 200410062311

A control method and device for closed-loop feedback in an IP network service quality management system, the method is to use a network measurement device to collect operating status data of an IP network, and then analyze the operating status data to obtain network planning decision data, and then use the planning decision data Adjust the IP network and judge whether to accept new user services; that is, before each user service enters the IP network, it must pass the permission of the admission control device, and the basis for the judgment of the admission control device—the decision data of network planning is to Real-time collection, analysis, and planning of the actual operating state parameters of the network. There are two approaches to closed-loop feedback control: traffic class planning and network bottleneck bandwidth planning. This method improves the current situation of low-level operation and maintenance that relies on manual operations in the process of IP network service quality assurance, reduces the dependence of service quality assurance on network layer heterogeneous technologies, and can guarantee business service quality, making the network run in a healthy state .

Figure 200410062311

Description

IP网络服务质量管理系统中闭环反馈的控制方法和装置Control method and device for closed-loop feedback in IP network service quality management system

技术领域technical field

本发明涉及IP网络服务质量的控制方法和装置,确切地说,涉及一种IP网络服务质量管理系统中闭环反馈的控制方法和装置,属于网络互联通信技术领域。The invention relates to a control method and device for IP network service quality, more precisely, to a closed-loop feedback control method and device in an IP network service quality management system, belonging to the technical field of network interconnection communication.

背景技术Background technique

IP网络,尤其是部署在3G或者软交换系统中作为承载层的IP网络,规模庞大,并且对网络服务质量要求苛刻。但是,传统的IP网络(Internet)的数据传输采用尽力而为的策略,无法实现差别服务。An IP network, especially an IP network deployed as a bearer layer in a 3G or softswitch system, has a large scale and has strict requirements on network service quality. However, the data transmission of the traditional IP network (Internet) adopts a best-effort strategy, which cannot realize differentiated services.

为了解决这个问题,国际标准组织IETF提出了DiffServ体系、IntServ体系和MPLS-TE等技术,用于实现有服务质量保证的业务。其中DiffServ体系的主要特征是将IP网络内的流量进行分类,对不同的分类采取不同的转发策略,从而体现出不同类型流量的服务质量差别。IntServ体系的主要特征是在网络的端到端之间通过信令建立一条虚电路,该虚电路有一定的带宽和时延保证,所有与该虚电路相关的路由器都要维持这条虚电路的状态信息,直到其销毁。MPLS-TE技术的主要特征是在网络边缘标记报文,在报文穿越网络核心部分的路由器时,这些路由器只在OSI七层参考模型的第二层进行转发;而TE技术则在部署了MPLS的网络中自动均衡指定链路的流量。上述IntServ和DiffServ体系框架,都只是说明了该体系的实施目标以及网络对其应该提供的支持,没有说明如何具体实施的技术措施。目前现有的实施方案均是通过人对网络状态进行估计之后,再由人工完成调整操作。In order to solve this problem, the international standard organization IETF has proposed technologies such as DiffServ system, IntServ system and MPLS-TE, which are used to realize services with guaranteed quality of service. Among them, the main feature of the DiffServ system is to classify the traffic in the IP network, and adopt different forwarding strategies for different classes, so as to reflect the difference in service quality of different types of traffic. The main feature of the IntServ system is to establish a virtual circuit through signaling between the ends of the network. The virtual circuit has a certain bandwidth and delay guarantee, and all routers related to the virtual circuit must maintain the virtual circuit. state information until it is destroyed. The main feature of MPLS-TE technology is to mark packets at the edge of the network. When packets pass through the routers in the core part of the network, these routers only forward them on the second layer of the OSI seven-layer reference model; while TE technology deploys MPLS Automatically balance the traffic of specified links in the network. The above-mentioned IntServ and DiffServ system frameworks only describe the implementation goals of the systems and the support that the network should provide to them, without specifying the technical measures for how to implement them. At present, the existing implementation schemes all estimate the network state by human beings, and then complete the adjustment operation manually.

但是,要使IP网络能够提供服务质量保障,必须及时发现网络上的瓶颈链路和瓶颈节点,并且能够实时调整这些瓶颈链路和瓶颈节点,包括采用更新设备或者重新规划瓶颈处的资源使用方法等。目前的这种人工调整操作是不可能实现该目标的。另外,在IP网络上部署DiffServ体系(包括混合采用DiffServ体系与任何其它技术)后,还需要根据网络运行情况实时调整链路上不同流量类的带宽。但是,在规模庞大的网络中,如何进行网络监控,并且依据监控结果推断网络运行状态,继而调整网络,以提高网络运行效率和保证服务质量,这一系列任务如果只是通过人工完成是极为困难和不可思议的。However, in order for the IP network to provide quality of service guarantees, the bottleneck links and bottleneck nodes on the network must be discovered in time, and these bottleneck links and bottleneck nodes can be adjusted in real time, including updating equipment or re-planning resource usage methods at bottlenecks wait. It is impossible to achieve this goal with the current manual adjustment operation. In addition, after deploying the DiffServ system (including mixed use of the DiffServ system and any other technology) on the IP network, it is necessary to adjust the bandwidth of different traffic types on the link in real time according to the network operation status. However, in a large-scale network, how to monitor the network, infer the operating status of the network based on the monitoring results, and then adjust the network to improve the operating efficiency of the network and ensure the quality of service, if this series of tasks are only done manually, it is extremely difficult and Incredible.

发明内容Contents of the invention

本发明的目的是提供一种IP网络服务质量管理系统中的闭环反馈的控制方法和装置,该方法是根据控制论的原理,基于网络测量得到的运行状态参数,自动反馈调整和分配网络资源,降低目前IP网络服务质量保障过程中过于依赖人工操作的现状,以保障业务的服务质量,使得网络处于健康状态运行。The object of the present invention is to provide a closed-loop feedback control method and device in an IP network service quality management system, the method is based on the principle of cybernetics, based on the operating state parameters obtained by network measurement, automatic feedback adjustment and distribution of network resources, Reduce the current situation of relying too much on manual operations in the process of IP network service quality assurance, so as to ensure the service quality of the business and make the network run in a healthy state.

本发明的方法是这样实现的:一种IP网络服务质量管理系统中的闭环反馈的控制方法,其特征在于:当经过接纳控制装置许可的用户业务流进入IP网络,从而改变IP网络的运行状态时,采用网络测量装置采集IP网络的运行状态数据,进而分析这些运行状态数据得到网络规划决策数据,然后根据这些决策规划数据对IP网络实施调整,以及判断是否接纳新的用户业务;即每个用户业务进入IP网络之前,必须通过接纳控制装置的许可,而接纳控制装置判断的依据—网络规划的决策数据则是对网络的实际运行状态参数进行实时采集、分析、规划得到的。The method of the present invention is realized as follows: a closed-loop feedback control method in an IP network service quality management system, which is characterized in that: when the user service flow permitted by the admission control device enters the IP network, thereby changing the operating state of the IP network When using the network measurement device to collect the operating status data of the IP network, and then analyze the operating status data to obtain the network planning decision data, and then adjust the IP network according to the decision planning data, and judge whether to accept new user services; that is, each Before the user business enters the IP network, it must pass the permission of the admission control device, and the decision-making data of the network planning, which is the basis for the judgment of the admission control device, is obtained by real-time collection, analysis, and planning of the actual operating status parameters of the network.

所述网络测量装置采集IP网络的运行状态的定量数据至少有:包括但不限于业务流占用网络路由器和/或交换机的处理时间的状态信息,包括但不限于业务流在网络中传输所占的带宽、传输速率的网络流量状态,端到端和/或点到点链路中的包括但不限于时延、抖动、丢包率的服务质量参数。The quantitative data collected by the network measurement device on the operating state of the IP network at least includes: including but not limited to status information of the processing time occupied by the network router and/or switch by the service flow, including but not limited to the time spent by the service flow on the network Network traffic status of bandwidth and transmission rate, quality of service parameters including but not limited to delay, jitter, and packet loss rate in end-to-end and/or point-to-point links.

所述网络测量装置分析其所采集的IP网络的运行状态数据是指:按照设定的时间粒度汇聚所采集的数据,分析网络运行状态,进而至少得到下述分析结果或统计数据:瓶颈链路和瓶颈节点的位置,各个链路上每种流量类的吞吐-时间关系图,端到端和/或点到点的时延-时间关系图和时延抖动-时间关系图,链路的丢包率-时间关系图。The analysis of the operation state data of the IP network collected by the network measurement device refers to: gathering the collected data according to the set time granularity, analyzing the network operation state, and then at least obtaining the following analysis results or statistical data: bottleneck link and bottleneck node locations, throughput-time diagrams for each traffic class on each link, end-to-end and/or point-to-point delay-time diagrams and delay jitter-time diagrams, link loss Packet rate-time relationship diagram.

所述根据决策规划数据对IP网络实施的调整至少包括:分配带宽、控制访问、调度队列。The adjustment to the IP network according to the decision planning data at least includes: allocating bandwidth, controlling access, and scheduling queues.

所述闭环反馈控制方法有两种:流量类规划闭环反馈控制方法和网络瓶颈带宽规划闭环反馈控制方法。There are two closed-loop feedback control methods: a closed-loop feedback control method for flow planning and a closed-loop feedback control method for network bottleneck bandwidth planning.

所述流量类规划闭环反馈控制方法的操作步骤如下:The operation steps of the traffic type planning closed-loop feedback control method are as follows:

(1)网络测量部件采集网络的运行状态信息,所述测量信息包括但不限于:网络上每个路由节点的各种流量类在一定间隔的时间点上的吞吐、丢包率,各种流量类的绝对带宽以及相对带宽,各种流量类的端到端的时延、抖动;(1) The network measurement component collects the operating state information of the network, and the measurement information includes but is not limited to: the throughput and packet loss rate of various traffic classes of each routing node on the network at a certain interval of time points, and various traffic The absolute bandwidth and relative bandwidth of the class, the end-to-end delay and jitter of various traffic classes;

(2)所采集的全部或者部分网络状态信息被送到流量类规划部件,由流量类规划部件定期根据流量类规划算法对该网络状态信息进行计算规划,得到每个路由节点的各种流量类的新的带宽,这些带宽数据构成了流量类状态矩阵;(2) All or part of the collected network state information is sent to the traffic class planning component, which periodically calculates and plans the network state information according to the traffic class planning algorithm, and obtains various traffic class information of each routing node. The new bandwidth of these bandwidth data constitutes the traffic class state matrix;

(3)部署部件按照该新的流量类带宽配置路由节点,使得网络进入新的运行状态;至此完成流量类规划的闭环反馈控制;(3) The deployment component configures routing nodes according to the new traffic class bandwidth, so that the network enters a new operating state; so far, the closed-loop feedback control of traffic class planning is completed;

(4)判断是否继续执行反馈控制操作,若是,返回步骤(1);若否,结束操作。(4) Judging whether to continue to perform the feedback control operation, if yes, return to step (1); if not, end the operation.

所述网络瓶颈带宽规划规划闭环反馈控制方法的操作步骤如下:The operation steps of the network bottleneck bandwidth planning and planning closed-loop feedback control method are as follows:

(1)网络测量部件采集网络的运行状态信息,所述测量信息包括但不限于:网络上每个路由节点的各个接口在一定间隔的时间点上的吞吐、丢包率,每个路由节点的各个接口的物理带宽和可用带宽,每个路由节点的路由信息;(1) The network measurement component collects the running status information of the network, and the measurement information includes but is not limited to: the throughput and packet loss rate of each interface of each routing node on the network at a certain interval of time points, the packet loss rate of each routing node Physical bandwidth and available bandwidth of each interface, routing information of each routing node;

(2)所采集的全部或者部分网络状态信息被送到瓶颈带宽规划部件,由瓶颈带宽规划部件定期根据瓶颈节点链路发现算法发现瓶颈节点和瓶颈链路,再依据瓶颈带宽规划算法为与所述瓶颈节点/瓶颈链路相连接的节点/链路分配带宽,得到流量矩阵;(2) All or part of the collected network state information is sent to the bottleneck bandwidth planning component, which regularly discovers bottleneck nodes and bottleneck links according to the bottleneck node link discovery algorithm, and then according to the bottleneck bandwidth planning algorithm for the The nodes/links connected to the above bottleneck nodes/bottleneck links allocate bandwidth to obtain the traffic matrix;

(3)接纳控制部件根据流量矩阵判断是否接纳用户业务,如果接纳控制部件决定接纳用户业务,则在用户业务进入网络时,由部署部件对该业务流执行标记和整形操作,使得网络进入新的运行状态;至此完成瓶颈带宽规划的闭环反馈控制;(3) The admission control component judges whether to admit the user service according to the traffic matrix. If the admission control component decides to admit the user service, when the user service enters the network, the deployment component performs marking and shaping operations on the service flow, so that the network enters a new Running status; so far, the closed-loop feedback control of bottleneck bandwidth planning is completed;

(4)判断是否继续执行反馈控制操作,若是,返回步骤(1);若否,结束操作。(4) Judging whether to continue to perform the feedback control operation, if yes, return to step (1); if not, end the operation.

本发明的装置是这样实现的:一种IP网络服务质量管理系统中闭环反馈的控制装置,包括实时采集IP网络的各个运行状态数据,并对其进行分析得到网络规划决策统计数据的网络测量装置,其特征在于:该装置还包括有:根据网络测量装置提供的网络规划决策统计数据分别进行网络规划的瓶颈带宽规划部件和流量类规划部件,接收瓶颈带宽规划部件控制的接纳控制部件,接收流量类规划部件和接纳控制部件双重控制以便完成网络调整任务的部署部件。The device of the present invention is realized in the following way: a control device for closed-loop feedback in the IP network service quality management system, including a network measurement device that collects various operating status data of the IP network in real time, and analyzes it to obtain statistical data for network planning decisions , is characterized in that: the device also includes: a bottleneck bandwidth planning component and a traffic class planning component for respectively performing network planning according to the network planning decision statistics data provided by the network measurement device, an admission control component controlled by the receiving bottleneck bandwidth planning component, and receiving traffic The planning component and the admission control component dual control to complete the deployment component of the network adjustment task.

所述瓶颈带宽规划部件的功能是依据网络规划决策统计数据将瓶颈链路的带宽按照规划算法的比例划分,再将划分后的带宽指定给瓶颈节点的其他链路,形成一个逻辑上的流量矩阵表,用作接纳控制部件的控制依据;The function of the bottleneck bandwidth planning component is to divide the bandwidth of the bottleneck link according to the proportion of the planning algorithm according to the statistical data of the network planning decision, and then assign the divided bandwidth to other links of the bottleneck node to form a logical flow matrix Table, used as the control basis for admitting control components;

所述流量类规划部件的功能是依据网络规划决策统计数据计算每个链路上各种流量类的比例关系,再根据一段较长时间内的比例变动趋势,重新分配链路的流量类之间的比例,以及依据比例关系和链路的实际带宽计算各流量类的绝对带宽值,形成流量类状态矩阵,用作部署部件控制流量的依据,即由部署部件将这些流量类的带宽值配置到路由节点上;The function of the traffic class planning component is to calculate the proportional relationship of various traffic classes on each link according to the statistical data of network planning decisions, and then redistribute the traffic classes of the links according to the trend of proportional changes in a long period of time. , and calculate the absolute bandwidth value of each traffic class based on the proportional relationship and the actual bandwidth of the link to form a traffic class state matrix, which is used as the basis for the deployment component to control the traffic, that is, the deployment component configures the bandwidth values of these traffic classes to on the routing node;

所述接纳控制部件是在签订某业务服务质量等级协议时判断网络资源是否足够,以便在业务数据进入网络之前控制其是否被接纳和整形;The admission control component judges whether the network resources are sufficient when signing a service quality level agreement, so as to control whether the service data is admitted and shaped before it enters the network;

所述部署部件用于完成网络的调整:用户业务进入网络时,在网络入口对该业务流量执行标记和整形操作;以及依照瓶颈带宽规划和流量类规划的结果,改变相应的网络节点或者链路的配置。The deployment component is used to complete network adjustment: when user services enter the network, mark and shape the service traffic at the network entrance; and change the corresponding network nodes or links according to the results of bottleneck bandwidth planning and traffic class planning Configuration.

所述部署部件的功能是由节点驱动部件将该部件的相关参数部署到路由器和交换机上实现的,所述节点驱动部件是面向各种不同生产厂家的网络路由和交换设备,用于改变不同生产厂家设备的配置,屏蔽不同网络路由和交换设备的配置指令的差异,为闭环控制模块提供统一配置接口的装置。The function of the deployment component is realized by deploying the relevant parameters of the component to routers and switches by the node drive component. The node drive component is network routing and switching equipment for various manufacturers, and is used to change the The configuration of the manufacturer's equipment shields the differences in the configuration instructions of different network routing and switching equipment, and provides a device for the closed-loop control module to configure the unified interface.

本发明适用的目标IP网络是采用DiffServ体系、或者DiffServ与其它IPQoS技术的混合体系,采用本发明的技术能够实现该目标IP网络的QoS保障自动化,而且,本发明方法中的网络调整对于目标网络而言,是目标IP网络带宽资源(各种流量类)的全网调整,而不是类似MPLS-TE或者OSPF负载均衡等技术只是对特定链路的单一调整。同时,本发明方法对网络运行的路由协议是透明的,无论目标IP网络采用RIP、OSPF、BGP等路有协议的任意一种或者数种。本发明方法能够改善目前IP网络服务质量保障过程中依靠人工操作的低水平运维现状,降低服务质量保障对网络层异构技术的依赖性,能够保障业务的服务质量,使得网络处于健康状态运行。因此,本发明具有的很好的应用前景。The applicable target IP network of the present invention adopts DiffServ system or the mixed system of DiffServ and other IPQoS technology, adopts the technology of the present invention to realize the QoS guarantee automation of this target IP network, and, the network adjustment in the method of the present invention is for the target network For this, it is a network-wide adjustment of target IP network bandwidth resources (various traffic types), rather than a single adjustment of a specific link for technologies such as MPLS-TE or OSPF load balancing. Simultaneously, the method of the present invention is transparent to the routing protocol operated by the network, regardless of whether the target IP network adopts any one or several kinds of routing protocols such as RIP, OSPF, and BGP. The method of the invention can improve the current situation of low-level operation and maintenance relying on manual operation in the current IP network service quality guarantee process, reduce the dependence of service quality guarantee on the network layer heterogeneous technology, and can guarantee the service quality of the business, so that the network runs in a healthy state . Therefore, the present invention has very good application prospect.

附图说明Description of drawings

图1是本发明闭环反馈控制实现方法的控制流程示意图。Fig. 1 is a schematic diagram of the control flow of the method for realizing the closed-loop feedback control of the present invention.

图2是本发明闭环反馈控制装置的组成部件结构及其控制数据流的示意图。Fig. 2 is a schematic diagram of the structure of the components and the control data flow of the closed-loop feedback control device of the present invention.

图3是流量类规划闭环反馈控制流程中的信息传递过程示意图。Fig. 3 is a schematic diagram of the information transfer process in the closed-loop feedback control flow of traffic planning.

图4是流量类规划闭环反馈控制流程中的相关部件协作关系示意图。Fig. 4 is a schematic diagram of the cooperative relationship of relevant components in the closed-loop feedback control flow of flow planning.

图5是流量类规划闭环反馈控制流程的操作步骤方框图。Fig. 5 is a block diagram of the operation steps of the closed-loop feedback control process of traffic class planning.

图6是瓶颈带宽规划闭环反馈控制流程中的信息传递过程示意图。Fig. 6 is a schematic diagram of the information transfer process in the bottleneck bandwidth planning closed-loop feedback control process.

图7是瓶颈带宽规划闭环反馈控制流程中的相关部件协作关系示意图。Fig. 7 is a schematic diagram of the cooperative relationship of relevant components in the bottleneck bandwidth planning closed-loop feedback control process.

图8是瓶颈带宽规划闭环反馈控制流程的操作步骤方框图。Fig. 8 is a block diagram of the operation steps of the bottleneck bandwidth planning closed-loop feedback control process.

具体实施方式Detailed ways

参见图1,本发明是一种根据控制论的原理,通过闭环控制,根据网络运行状态自动调整网络的各种服务质量参数的方法。当经过接纳控制装置许可的用户业务流量进入IP网络,改变了IP网络的运行状态时,本发明通过网络测量装置对IP网络运行状态数据的采集,再经过对这些状态数据的分析得到一些网络规划决策数据。再将这些决策规划数据用于网络调整和用户业务接纳的判断。而用户业务不能随意进入IP网络,必须通过接纳控制机制的许可之后,才能进入IP网络。接纳控制装置判断的依据—网络规划的决策数据则是对网络的实际运行状态参数进行实时采集、分析、规划得到的决策数据。Referring to Fig. 1, the present invention is a method for automatically adjusting various service quality parameters of the network according to the operating status of the network through closed-loop control based on the principle of cybernetics. When the user service flow permitted by the admission control device enters the IP network and changes the operation state of the IP network, the present invention collects the operation state data of the IP network through the network measurement device, and then obtains some network planning by analyzing the state data decision data. These decision-making planning data are then used for network adjustment and judgment of user service acceptance. However, user services cannot enter the IP network at will, and must pass the permission of the admission control mechanism before entering the IP network. The basis for the judgment of the admission control device—the decision data of network planning is the decision data obtained by real-time collection, analysis and planning of the actual operating state parameters of the network.

用户业务流量对IP网络运行状态的影响主要体现在:占用传输带宽;占用网络路由器和交换机的处理时间,从而改变了网络链路的时延、抖动、丢包率。而管理系统对IP网络实施的调整主要包括:带宽分配、访问控制、队列调度方案等。这些调整使得网络性能不会由于用户业务流量的改变而产生突变。The impact of user service traffic on the IP network operation status is mainly reflected in: Occupying transmission bandwidth; Occupying the processing time of network routers and switches, thus changing the delay, jitter, and packet loss rate of network links. The adjustments implemented by the management system on the IP network mainly include: bandwidth allocation, access control, and queue scheduling schemes. These adjustments prevent network performance from abrupt changes due to changes in user traffic.

参见图2,介绍本发明的一种IP网络服务质量管理系统中闭环反馈控制的装置,包括如下部件:实时采集IP网络的各个运行状态数据,并对其进行分析得到网络规划决策统计数据的网络测量装置;根据网络测量装置提供的网络规划决策统计数据分别进行网络规划的瓶颈带宽规划部件和流量类规划部件,接收瓶颈带宽规划部件控制的接纳控制部件,接收流量类规划部件和接纳控制部件双重控制以便完成网络调整任务的部署部件。图中的空心箭头表示网络监测数据流,中间带有三角形的细实线表示控制流,粗实线箭头表示用户业务请求和部署指令,粗虚线箭头表示流量类规划部署指令。Referring to Fig. 2, the device for closed-loop feedback control in a kind of IP network service quality management system of the present invention is introduced, including the following components: real-time collection of various operating status data of the IP network, and analyzing it to obtain network planning decision-making statistical data Measuring device; according to the network planning decision statistical data provided by the network measuring device, the bottleneck bandwidth planning part and the traffic class planning part respectively carry out network planning, the admission control part controlled by the receiving bottleneck bandwidth planning part, the receiving traffic class planning part and the admission control part dual Deployment component that controls to accomplish network tuning tasks. The hollow arrows in the figure represent the network monitoring data flow, the thin solid line with a triangle in the middle represents the control flow, the thick solid line arrow represents user service requests and deployment instructions, and the thick dashed arrow represents traffic planning and deployment instructions.

其中网络测量装置使用链路吞吐测量、端到端流量类的吞吐测量、端到端时延及抖动测量、网络节点吞吐测量等技术采集IP网络的运行状态的定量数据。测量方法包括有:使用SNMP协议获取网络设备的状态信息;使用Netflow/CFlow等流量采集工具获取网络流量状态:使用Cisco路由器支持的SAA技术和探针工具(具备主动测量能力的计算机或者嵌入式设备)获取网络端到端的服务质量特性。所采集的数据至少有:包括但不限于业务流占用网络路由器和/或交换机的处理时间的状态信息,包括但不限于业务流在网络中传输所占的带宽、传输速率的网络流量状态,端到端和/或点到点链路中的包括但不限于时延、抖动、丢包率的服务质量参数。然后,网络测量装置按照设定的时间粒度(比如每15分钟)汇聚所采集的数据,分析网络运行状态,进而至少得到下述分析结果或统计数据:瓶颈链路和瓶颈节点的位置,各个链路上每种流量类的吞吐-时间关系图,端到端和/或点到点的时延-时间关系图和时延抖动-时间关系图,链路的丢包率-时间关系图。Among them, the network measurement device collects the quantitative data of the operation status of the IP network by using techniques such as link throughput measurement, end-to-end traffic throughput measurement, end-to-end delay and jitter measurement, and network node throughput measurement. Measurement methods include: using SNMP protocol to obtain status information of network devices; using Netflow/CFlow and other traffic collection tools to obtain network traffic status; using SAA technology and probe tools supported by Cisco routers (computers or embedded devices with active measurement capabilities) ) to obtain the end-to-end quality of service characteristics of the network. The collected data at least includes: including but not limited to the state information of the processing time occupied by the network router and/or switch by the business flow, including but not limited to the bandwidth occupied by the business flow transmitted in the network, the network flow status of the transmission rate, the terminal Quality of service parameters in point-to-point and/or point-to-point links, including but not limited to delay, jitter, and packet loss rate. Then, the network measurement device aggregates the collected data according to the set time granularity (for example, every 15 minutes), analyzes the network operation status, and then at least obtains the following analysis results or statistical data: the position of the bottleneck link and the bottleneck node, each link Throughput-time relationship diagram of each traffic type on the road, end-to-end and/or point-to-point delay-time relationship diagram and delay jitter-time relationship diagram, link packet loss rate-time relationship diagram.

瓶颈带宽规划部件的功能是依据网络规划决策统计数据将瓶颈链路的带宽按照规划算法的比例划分,再将划分后的带宽指定给瓶颈节点的其他链路,形成一个逻辑上的流量矩阵表,用作接纳控制部件的控制依据;在此不对瓶颈带宽规划算法展开描述。The function of the bottleneck bandwidth planning component is to divide the bandwidth of the bottleneck link according to the proportion of the planning algorithm according to the statistical data of the network planning decision, and then assign the divided bandwidth to other links of the bottleneck node to form a logical traffic matrix table. It is used as the control basis of the admission control component; the bottleneck bandwidth planning algorithm is not described here.

流量类规划部件的功能是依据网络规划决策统计数据计算每个链路上各种流量类的比例关系,再根据一段较长时间内的比例变动趋势,重新分配链路的流量类之间的比例,以及依据比例关系和链路的实际带宽计算各流量类的绝对带宽值,形成流量类状态矩阵,用作部署部件控制流量的依据,即由部署部件将这些流量类的带宽值配置到路由节点上;The function of the traffic class planning component is to calculate the proportional relationship of various traffic classes on each link based on the statistical data of network planning decisions, and then redistribute the proportions of the traffic classes of the link according to the trend of the ratio change over a long period of time , and calculate the absolute bandwidth value of each traffic class based on the proportional relationship and the actual bandwidth of the link to form a traffic class state matrix, which is used as the basis for the deployment component to control the traffic, that is, the deployment component configures the bandwidth values of these traffic classes to the routing node superior;

接纳控制部件的功能是在签订某业务服务质量等级协议时判断网络资源是否足够,以便在业务数据进入网络之前控制其是否被接纳和整形;The function of the admission control component is to judge whether the network resources are sufficient when signing a service quality level agreement, so as to control whether the service data is admitted and shaped before it enters the network;

部署部件用于完成网络的调整,包括两个功能:a)用户业务进入网络时,在网络入口对该业务流量执行标记、整形等工作。b)依照瓶颈带宽规划和流量类规划得到的结果,改变相应的网络节点或者链路的配置。部署部件的功能是由节点驱动部件将该部件的相关参数部署到路由器和交换机上实现的。节点驱动部件是面向各种不同生产厂家的网络路由和交换设备,该节点驱动部件至少包括有CLI接口、SNMP接口和COPS接口,用于改变不同生产厂家设备的配置,屏蔽不同网络路由和交换设备的配置指令的差异,为闭环控制模块提供统一配置接口的装置。The deployment component is used to complete the adjustment of the network, including two functions: a) when user services enter the network, mark and shape the service traffic at the network entrance. b) Change the configuration of corresponding network nodes or links according to the results of bottleneck bandwidth planning and traffic class planning. The function of the deployment component is implemented by the node-driven component deploying the relevant parameters of the component to the router and the switch. Node driver components are network routing and switching devices for various manufacturers. The node driver components include at least CLI interface, SNMP interface and COPS interface, which are used to change the configuration of devices from different manufacturers and shield different network routing and switching devices. The differences in the configuration instructions provide a unified configuration interface for the closed-loop control module.

本发明的闭环反馈控制方法有两种,下面分别介绍之:The closed-loop feedback control method of the present invention has two kinds, introduces respectively below:

参见图3~图5所示的流量类规划闭环反馈控制方法的信息传递、状态转移以及各种操作执行的顺序流程。在该流量类规划闭环控制过程中,先由网络测量部件采集网络的运行状态信息,例如:使用SNMP协议获得网络链路的实际带宽、流量类的数量和特性、流量类的带宽分配数据,使用Netflow/CFlow等工具获取端到端流量类的吞吐,使用Cisco路由器的SAA功能以及主动测量探针(自行开发的能够执行指定流量类端到端时延、抖动、丢包率等网络参数测量的计算机)等工具获取流量类的端到端时延、抖动、丢包率等特性。上述的数据提供给流量类规划部件。流量类规划部件定期(例如每周)根据流量类规划算法得到每个路由节点的各种流量类的带宽数据,这些带宽数据构成了流量类状态矩阵;然后由部署部件按照这些新的流量类带宽配置路由节点。至此完成流量类规划闭环反馈控制。Refer to the sequence flow of information transfer, state transition and execution of various operations in the traffic planning closed-loop feedback control method shown in FIGS. 3 to 5 . In the closed-loop control process of traffic class planning, the network measurement component first collects network operation status information, for example: using SNMP protocol to obtain the actual bandwidth of network links, the number and characteristics of traffic classes, and the bandwidth allocation data of traffic classes, use Tools such as Netflow/CFlow obtain the throughput of end-to-end traffic classes, use the SAA function of Cisco routers and active measurement probes (self-developed devices that can measure network parameters such as end-to-end delay, jitter, and packet loss rate for specified traffic classes) Computer) and other tools to obtain the end-to-end delay, jitter, packet loss rate and other characteristics of the traffic class. The above data are provided to the traffic class planning component. The traffic class planning component periodically (for example, weekly) obtains the bandwidth data of various traffic classes of each routing node according to the traffic class planning algorithm, and these bandwidth data constitute the traffic class state matrix; Configure routing nodes. So far, the closed-loop feedback control of traffic planning is completed.

参见图6~图8所示的网络瓶颈带宽规划闭环反馈控制方法,在该瓶颈链路规划闭环反馈控制过程中:使用SNMP技术获取每个路由节点的各个接口在一定间隔的时间点上的吞吐、丢包率,每个路由节点的各个接口的物理带宽和可用带宽,每个路由节点的路由信息等数据,这些数据信息被提供给瓶颈链路规划部件,瓶颈链路规划部件定期(例如每周)执行瓶颈链路节点发现算法,发现瓶颈节点和瓶颈链路,然后执行瓶颈链路规划算法,将这些瓶颈节点/链路的带宽重新分配,生成流量矩阵,并且进一步提供给接纳控制部件,用作在业务数据进入网络之前控制其是否被接纳和整形的依据。Referring to the network bottleneck bandwidth planning closed-loop feedback control method shown in Figures 6 to 8, in the bottleneck link planning closed-loop feedback control process: use SNMP technology to obtain the throughput of each interface of each routing node at a certain interval of time , packet loss rate, the physical bandwidth and available bandwidth of each interface of each routing node, the routing information of each routing node and other data, these data information are provided to the bottleneck link planning component, and the bottleneck link planning component regularly (for example, every Zhou) Execute the bottleneck link node discovery algorithm, discover the bottleneck node and the bottleneck link, then execute the bottleneck link planning algorithm, redistribute the bandwidth of these bottleneck nodes/links, generate the traffic matrix, and further provide it to the admission control component, It is used as the basis for controlling whether business data is admitted and shaped before it enters the network.

本发明的方法进行了试验实施,试验方案是在一个有2台服务器、4台网络测量服务器的环境中部署的,管理一个有20台路由器的网络(路由器型号包括Cisco、Juniper和华为),方案中各个部件均被设计为一个或者多个CORBA对象,通过CORBA这种分布式软件系统提供的机制进行消息通信。试验是成功的,初步实现了发明目的。The method of the present invention has carried out test and implemented, and test scheme is deployed in the environment that has 2 servers, 4 network measurement servers, manages a network that has 20 routers (router model comprises Cisco, Juniper and Huawei), scheme Each component in the system is designed as one or more CORBA objects, and message communication is carried out through the mechanism provided by CORBA, a distributed software system. The test is successful, and the purpose of the invention has been preliminarily realized.

Claims (10)

1、一种IP网络服务质量管理系统中闭环反馈的控制方法,其特征在于:当经过接纳控制装置许可的用户业务流进入IP网络,从而改变IP网络的运行状态时,采用网络测量装置采集IP网络的运行状态数据,进而分析这些运行状态数据得到网络规划决策数据,然后根据这些决策规划数据对IP网络实施调整,以及判断是否接纳新的用户业务;即每个用户业务进入IP网络之前,必须通过接纳控制装置的许可,而接纳控制装置判断的依据—网络规划的决策数据则是对网络的实际运行状态参数进行实时采集、分析、规划得到的。1. A control method for closed-loop feedback in an IP network quality of service management system, characterized in that: when the user service flow permitted by the admission control device enters the IP network, thereby changing the operating state of the IP network, the network measurement device is used to collect the IP Network operation status data, and then analyze these operation status data to obtain network planning decision data, and then adjust the IP network according to these decision planning data, and judge whether to accept new user services; that is, before each user service enters the IP network, it must With the permission of the admission control device, the decision-making data of the network planning, which is the basis for the judgment of the admission control device, is obtained by real-time collection, analysis, and planning of the actual operating state parameters of the network. 2、根据权利要求1所述的闭环反馈的控制方法,其特征在于:所述网络测量装置采集IP网络的运行状态的定量数据至少有:包括但不限于业务流占用网络路由器和/或交换机的处理时间的状态信息,包括但不限于业务流在网络中传输所占的带宽、传输速率的网络流量状态,端到端和/或点到点链路中的包括但不限于时延、抖动、丢包率的服务质量参数。2. The control method of closed-loop feedback according to claim 1, characterized in that: the quantitative data collected by the network measurement device on the operating status of the IP network at least includes: including but not limited to the occupation of network routers and/or switches by business flows The state information of processing time, including but not limited to the bandwidth occupied by the business flow in the network, the network flow state of the transmission rate, and the end-to-end and/or point-to-point link including but not limited to delay, jitter, Quality of service parameter for packet loss rate. 3、根据权利要求1所述的闭环反馈的控制方法,其特征在于:所述网络测量装置分析其所采集的IP网络的运行状态数据是指:按照设定的时间粒度汇聚所采集的数据,分析网络运行状态,进而至少得到下述分析结果或统计数据:瓶颈链路和瓶颈节点的位置,各个链路上每种流量类的吞吐-时间关系图,端到端和/或点到点的时延-时间关系图和时延抖动-时间关系图,链路的丢包率-时间关系图。3. The control method of closed-loop feedback according to claim 1, characterized in that: analyzing the operation state data of the IP network collected by the network measuring device means: gathering the collected data according to the set time granularity, Analyze the network operation status, and then obtain at least the following analysis results or statistical data: the location of bottleneck links and bottleneck nodes, the throughput-time relationship graph of each traffic class on each link, the end-to-end and/or point-to-point Delay-time relationship diagram and delay jitter-time relationship diagram, link packet loss rate-time relationship diagram. 4、根据权利要求1所述的闭环反馈的控制方法,其特征在于:所述根据决策规划数据对IP网络实施的调整至少包括:分配带宽、控制访问、调度队列。4. The closed-loop feedback control method according to claim 1, characterized in that: said adjustments to the IP network based on decision planning data at least include: allocating bandwidth, controlling access, and scheduling queues. 5、根据权利要求1所述的闭环反馈的控制方法,其特征在于:所述闭环反馈控制方法有两种:流量类规划闭环反馈控制方法和网络瓶颈带宽规划闭环反馈控制方法。5. The closed-loop feedback control method according to claim 1, characterized in that: there are two closed-loop feedback control methods: a closed-loop feedback control method for traffic class planning and a closed-loop feedback control method for network bottleneck bandwidth planning. 6、根据权利要求5所述的闭环反馈的控制方法,其特征在于:所述流量类规划闭环反馈控制方法的操作步骤如下:6. The control method of closed-loop feedback according to claim 5, characterized in that: the operation steps of the closed-loop feedback control method of traffic class planning are as follows: (1)网络测量部件采集网络的运行状态信息,所述测量信息包括但不限于:网络上每个路由节点的各种流量类在一定间隔的时间点上的吞吐、丢包率,各种流量类的绝对带宽以及相对带宽,各种流量类的端到端的时延、抖动;(1) The network measurement component collects the operating state information of the network, and the measurement information includes but is not limited to: the throughput and packet loss rate of various traffic classes of each routing node on the network at a certain interval of time points, and various traffic The absolute bandwidth and relative bandwidth of the class, the end-to-end delay and jitter of various traffic classes; (2)所采集的全部或者部分网络状态信息被送到流量类规划部件,由流量类规划部件定期根据流量类规划算法对该网络状态信息进行计算规划,得到每个路由节点的各种流量类的新的带宽,这些带宽数据构成了流量类状态矩阵;(2) All or part of the collected network state information is sent to the traffic class planning component, which periodically calculates and plans the network state information according to the traffic class planning algorithm, and obtains various traffic class information of each routing node. The new bandwidth of these bandwidth data constitutes the traffic class state matrix; (3)部署部件按照该新的流量类带宽配置路由节点,使得网络进入新的运行状态;至此完成流量类规划的闭环反馈控制;(3) The deployment component configures routing nodes according to the new traffic class bandwidth, so that the network enters a new operating state; so far, the closed-loop feedback control of traffic class planning is completed; (4)判断是否继续执行反馈控制操作,若是,返回步骤(1);若否,结束操作。(4) Judging whether to continue to perform the feedback control operation, if yes, return to step (1); if not, end the operation. 7、根据权利要求5所述的闭环反馈的控制方法,其特征在于:所述网络瓶颈带宽规划规划闭环反馈控制方法的操作步骤如下:7. The control method of closed-loop feedback according to claim 5, characterized in that: the operation steps of the network bottleneck bandwidth planning and planning closed-loop feedback control method are as follows: (1)网络测量部件采集网络的运行状态信息,所述测量信息包括但不限于:网络上每个路由节点的各个接口在一定间隔的时间点上的吞吐、丢包率,每个路由节点的各个接口的物理带宽和可用带宽,每个路由节点的路由信息;(1) The network measurement component collects the running status information of the network, and the measurement information includes but is not limited to: the throughput and packet loss rate of each interface of each routing node on the network at a certain interval of time points, the packet loss rate of each routing node Physical bandwidth and available bandwidth of each interface, routing information of each routing node; (2)所采集的全部或者部分网络状态信息被送到瓶颈带宽规划部件,由瓶颈带宽规划部件定期根据瓶颈节点链路发现算法发现瓶颈节点和瓶颈链路,再依据瓶颈带宽规划算法为与所述瓶颈节点/瓶颈链路相连接的节点/链路分配带宽,得到流量矩阵;(2) All or part of the collected network state information is sent to the bottleneck bandwidth planning component, which regularly discovers bottleneck nodes and bottleneck links according to the bottleneck node link discovery algorithm, and then according to the bottleneck bandwidth planning algorithm for the The nodes/links connected to the above bottleneck nodes/bottleneck links allocate bandwidth to obtain the traffic matrix; (3)接纳控制部件根据流量矩阵判断是否接纳用户业务,如果接纳控制部件决定接纳用户业务,则在用户业务进入网络时,由部署部件对该业务流执行标记和整形操作,使得网络进入新的运行状态;至此完成瓶颈带宽规划的闭环反馈控制;(3) The admission control component judges whether to admit the user service according to the traffic matrix. If the admission control component decides to admit the user service, when the user service enters the network, the deployment component performs marking and shaping operations on the service flow, so that the network enters a new Running status; so far, the closed-loop feedback control of bottleneck bandwidth planning is completed; (4)判断是否继续执行反馈控制操作,若是,返回步骤(1);若否,结束操作。(4) Judging whether to continue to perform the feedback control operation, if yes, return to step (1); if not, end the operation. 8、一种IP网络服务质量管理系统中闭环反馈的控制装置,包括实时采集IP网络的各个运行状态数据,并对其进行分析得到网络规划决策统计数据的网络测量装置,其特征在于:该装置还包括有:根据网络测量装置提供的网络规划决策统计数据分别进行网络规划的瓶颈带宽规划部件和流量类规划部件,接收瓶颈带宽规划部件控制的接纳控制部件,接收流量类规划部件和接纳控制部件双重控制以便完成网络调整任务的部署部件。8. A control device for closed-loop feedback in an IP network service quality management system, including a network measurement device that collects various operating status data of an IP network in real time and analyzes it to obtain statistical data for network planning decisions, characterized in that: the device It also includes: a bottleneck bandwidth planning component and a flow planning component for network planning according to the network planning decision statistics data provided by the network measurement device, an admission control component controlled by the receiving bottleneck bandwidth planning component, a receiving flow planning component and an admission control component Deployment components that dual control for network tuning tasks. 9、根据权利要求8所述的闭环反馈的控制装置,其特征在于:9. The closed-loop feedback control device according to claim 8, characterized in that: 所述瓶颈带宽规划部件的功能是依据网络规划决策统计数据将瓶颈链路的带宽按照规划算法的比例划分,再将划分后的带宽指定给瓶颈节点的其他链路,形成一个逻辑上的流量矩阵表,用作接纳控制部件的控制依据;The function of the bottleneck bandwidth planning component is to divide the bandwidth of the bottleneck link according to the proportion of the planning algorithm according to the statistical data of the network planning decision, and then assign the divided bandwidth to other links of the bottleneck node to form a logical flow matrix Table, used as the control basis for admitting control components; 所述流量类规划部件的功能是依据网络规划决策统计数据计算每个链路上各种流量类的比例关系,再根据一段较长时间内的比例变动趋势,重新分配链路的流量类之间的比例,以及依据比例关系和链路的实际带宽计算各流量类的绝对带宽值,形成流量类状态矩阵,用作部署部件控制流量的依据,即由部署部件将这些流量类的带宽值配置到路由节点上;The function of the traffic class planning component is to calculate the proportional relationship of various traffic classes on each link according to the statistical data of network planning decisions, and then redistribute the traffic classes of the links according to the trend of proportional changes in a long period of time. , and calculate the absolute bandwidth value of each traffic class based on the proportional relationship and the actual bandwidth of the link to form a traffic class state matrix, which is used as the basis for the deployment component to control the traffic, that is, the deployment component configures the bandwidth values of these traffic classes to on the routing node; 所述接纳控制部件是在签订某业务服务质量等级协议时判断网络资源是否足够,以便在业务数据进入网络之前控制其是否被接纳和整形;The admission control component judges whether the network resources are sufficient when signing a service quality level agreement, so as to control whether the service data is admitted and shaped before it enters the network; 所述部署部件用于完成网络的调整:用户业务进入网络时,在网络入口对该业务流量执行标记和整形操作;以及依照瓶颈带宽规划和流量类规划的结果,改变相应的网络节点或者链路的配置。The deployment component is used to complete network adjustment: when user services enter the network, mark and shape the service traffic at the network entrance; and change the corresponding network nodes or links according to the results of bottleneck bandwidth planning and traffic class planning Configuration. 10、根据权利要求9所述的闭环反馈的控制装置,其特征在于:所述部署部件的功能是由节点驱动部件将该部件的相关参数部署到路由器和交换机上实现的,所述节点驱动部件是面向各种不同生产厂家的网络路由和交换设备,用于改变不同生产厂家设备的配置,屏蔽不同网络路由和交换设备的配置指令的差异,为闭环控制模块提供统一配置接口的装置。10. The closed-loop feedback control device according to claim 9, characterized in that: the function of the deployment component is implemented by the node drive component deploying the relevant parameters of the component to routers and switches, and the node drive component It is a device for network routing and switching equipment of various manufacturers, which is used to change the configuration of equipment from different manufacturers, shield the differences in configuration instructions of different network routing and switching equipment, and provide a unified configuration interface for the closed-loop control module.
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