Vxworks下组播路由体系研究与实现

随着Internet上多媒体尤其是网络视频、网络会议以及远程直播等应用的发展，组播技术已经变得越来越重要，它可以帮助用户节约宝贵的带宽资源，有效地解决单点发送多点接收问题。在介绍了组播路由基本原理的基础上，对Vxworks下组播路由体系结构进行了研究，并以DVMRP和PIM两个协议为例，从总体设计、组播任务、IP协议栈内核以及组播任务和内核的交互等几个方面给出了它的初步实现。

Research and implementation of multicast routing architecture based on Vxworks

With the development of multimedia especially some applications such as network video, network meeting and remote living broadcast on Internet, multicast technology has become more and more important. It can save precious bandwidth resource and solve the problem that one point sends information but many points receive. The basic principle of multicast routing is introduced and the multicast routing architecture under Vxworks is analyzed, using DVMRP and PIM as example, which principle is implemented from several aspects, such as total design, multicast routing task, IP protocol stack kernel and the interaction between multicast routing task and kernel.