波分复用设备共享测试服务器的设计与实现

发布时间：2018-07-11 15:47

本文选题：波分复用 + SDH　；参考：《上海交通大学》2014年硕士论文

【摘要】：WDM技术是当前骨干传输光网络采用的基本技术,按网络节点划分有复用/解复用终端、中继放大和光分插复用节点等。其中复用/解复用终端和光分插复用节点的每个波长接口都连接一块具有波长适配功能的业务板卡,该板卡实现客户数据信号从客户侧到线路侧的波长适配,也兼顾实现客户侧低速业务到线路侧高速标准封装数据的汇聚。在波分复用系统中,业务板卡和其他波分系统板卡的数量比接近n:1(n为复用波长数目,波长数目越多越接近),因此对其的测试占据了整个WDM设备测试任务的很大部分。而业务板卡的测试仪表又是极其昂贵的,成本占整个系统测试成本的绝大部分。在当前全球网络运营商不断降低单位比特投资的大环境下,设备供应商通过降低成本提升竞争力变得更加迫切。测试仪表历来都是固定成本的很大一块,传统的自动化测试中仪表的平均使用率很难超过20%,可见如果能把仪表使用率提升到40%以上,成本便能下降至少一半。传统的自动化测试平台是本地单机模式的,每个测试平台有一台电脑作为控制器,把所有测试仪表连接控制起来,在计算机上运行自动化测试代码来完成测试。测试项目串行执行,执行测试项A时其它测试项的测试仪表便处于空闲等待状态。这种模式的好处是控制简单,实现和维护方便。缺点也显而易见,那就是昂贵的测试设备在大多时刻是空闲的——造成巨大的浪费。本文通过构建一个WDM设备共享测试服务器的实例,来满足多用户的测试需求,达到最大化共享测试仪表的目的。不同的用户只需要在客户端的测试界面提交自己的测试需求,测试服务器接收到多个用户测试需求后,运行竞争算法,获得无冲突并行测试组,执行多用户不同测试用例的并行测试。按照这种思想可以分别开发服务器端和客户端自动测试程序:服务器接受来自不同用户的申请,根据预设的仲裁算法,分配资源,执行测试并返送测试结果到客户端;客户端维护各自的测试用例列表,发出测试请求,处理测试数据并生成测试报告。本文首先介绍波分复用设备及其自动化测试系统发展;然后提出改进型的自动共享测试服务器,介绍其软硬件架构以及服务器核心的竞争算法;最后介绍一个基于作者单位测试单元及仪表资源的简单服务器/客户端实现。希望本文能为其它需要开发自动共享测试服务器的同行提供一种思路和参考。
[Abstract]:WDM technology is the basic technology used in the backbone transmission optical network at present. There are multiplexing / demultiplexing terminals relay amplification and optical add / drop multiplexing nodes according to the network nodes. Each wavelength interface of the multiplexing / demultiplexing terminal and the optical demultiplexing node is connected to a service card with wavelength adaptation function, which realizes the wavelength adaptation of the customer data signal from the client side to the line side. At the same time, to achieve the client-side low-speed service to line-side high-speed standard packaging data convergence. In wavelength division multiplexing system, the number of service cards and other wave sub-system cards is close to n: 1 (n is the number of multiplexed wavelengths, the more wavelengths are closer), so the testing of the service boards occupies a large part of the whole WDM device testing task. The test instrument of the service card is extremely expensive, and the cost accounts for most of the cost of the whole system test. In the current global network operators to reduce the unit bit investment environment, equipment suppliers by reducing costs to enhance competitiveness become more urgent. The test instrument is always a large part of fixed cost, the average utilization rate of the instrument is difficult to exceed 20% in the traditional automatic test, so if the instrument utilization rate can be increased to more than 40%, the cost can be reduced by at least half. The traditional automated test platform is local single-machine mode, each test platform has a computer as a controller, all the test instruments are connected and controlled, and the automation test code is run on the computer to complete the test. The test item is executed serially, and the test instrument of the other test item is idle when the test item A is executed. The advantages of this model are simple control, easy implementation and maintenance. The drawback, too, is that expensive test equipment is idle most of the time-a huge waste. In this paper, an example of WDM device sharing test server is constructed to meet the test requirements of multi-users and to maximize the sharing of test instruments. Different users only need to submit their own test requirements in the client test interface. After receiving more than one user test requirement, the test server runs a competitive algorithm to obtain a conflict-free parallel test group. Perform parallel tests with different test cases for multiple users. According to this idea, we can develop the automatic test program on the server side and the client side: the server accepts the application from different users, according to the default arbitration algorithm, allocates the resources, executes the test and sends back the test result to the client; Clients maintain their test case lists, issue test requests, process test data and generate test reports. This paper first introduces the development of wavelength division multiplexing equipment and its automatic test system, then proposes an improved automatic shared test server, and introduces its hardware and software architecture and the core competition algorithm of the server. Finally, a simple server / client implementation based on author unit test unit and instrument resource is introduced. It is hoped that this paper can provide a kind of thinking and reference for other peers who need to develop automatic shared test server.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.1

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