信息技术 中继多播协议：单工组应用规范 第2部分

[中文适用范围]： 本建议书/国际标准指定了中继多播协议第二版（RMCP-2），这是一种应用层协议，用于在基于IP的网络上构建数据从一个发送方传输到多个接收方的多播树，其中IP多播没有完全部署。RMCP-2定义了在基于IP的网络上进行单工群组通信的应用层中继多播数据传输功能。本建议书/国际标准规定了以下内容：a) 描述了RMCP-2的实体、控制和数据传输模型；b) 描述了多播代理（MA）的功能和程序，用于构建一对多的中继数据路径并进行单工通信的数据中继；c) 描述了基本RMCP-2的安全特性；以及d) 定义了基本RMCP-2和安全RMCP-2的消息和参数。附录A定义了一个成员身份验证过程，用于与安全RMCP-2一起使用。附录B提供了一种在使用多个会话管理器（SM）时共享信息的方法。附录C-G提供了有关RMCP-2的相关说明性材料。附录H包含一个说明性参考书目。 [外文原描述]： ISO/IEC 16512-2:2016 specifies the relayed multicast protocol part 2 (RMCP-2), an application‑layer protocol that constructs a multicast tree for data delivery from one sender to multiple receivers over an IP-based network, where IP multicast is not fully deployed. RMCP-2 defines relayed multicast data transport capabilities over IP‑based networks for simplex group applications. This Recommendation | International Standard specifies the following: a) descriptions of the entities, control and data delivery models of RMCP-2; b) description of the functions and procedures of multicast agents (MAs) to construct a one-to-many relayed data path and to relay data for simplex communication; c) description of the security features of the basic RMCP-2; and d) definitions of messages and parameters of the basic RMCP-2 and secure RMCP-2. Annex A defines a membership authentication procedure for use with the secure RMCP-2. Annex B provides a method for sharing information among session managers (SMs) when multiple SMs are used. Annexes C‑G provide informative material related to RMCP-2. Annex H contains an informative bibliography.