IP组播通信及其在VxWorks操作系统下的实现

IP Multicast Communication and its Implementation under VxWorks

网络通信在实时嵌入式系统中占有越来越重要的地位。IP组播通信技术已成为解决数据群组收发,避免网络广播风暴的有效手段。VxWorks是目前在工业控制、国防军事、航空航天等领域广泛使用的实时嵌入式操作系统。它以快速多任务切换、强占式任务调度、微内核与可裁剪的组织结构、有效支持各种硬件环境等特点成为事实工业标准。本文论述了组播的相关概念以及如何在VxWorks操作系统下实现IP组播通信。

Network communications play a very important role in real - time embedded systems. IP multicast communication technique is an efficient solution to send packets from one sender to a group of receivers without incurring broadcast storms. In the other side,VxWorks is a real- time embedded operation system widely used in industrial control, military, aeronautical and astronautical applications. It features fast multitask switch, preemptive task scheduling, micro kernel and configurable organization, and effectively supporting various hardware environments, and it has become a de facto industrial standard. In this paper we discuss related concepts of multicast, then focus on how to implement IP multicast communication under VxWorks operation system.