Effectively reduced multicast source’s load.
有效降低了组播源的负载。
参考来源 - IPv6大型安全组播的设计和实现The technology multicast just can resolve these problems.
组播技术则正是为解决此类问题应运而生的。
参考来源 - 二层交换机上IGMP Snooping协议的实现研究·2,447,543篇论文数据，部分数据来源于NoteExpress
首先，UDP支持组播-发送一个数据包到多台机器。
Firstly, UDP supports multicast - sending a single packet to multiple machines.
组播技术的核心是选路问题，设计或选取合适的组播路由算法对组播选路的有效实施非常重要。
The core of multicast mechanism is routing problem, and designing & selecting appropriate multicast routing algorithm is very important to efficiently implement multicast routing.
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