本文件定义了协议和协议架构的NGP参考模型。该模型提供了一个 用于指定和告知现有协议和新协议的增强功能的通用参考 在NGP贡献和批准的文件输出范围内进行设计。

The present document defines the NGP Reference Model for protocols and protocol architectures. The model provides a common reference that is to be used to specify and inform about enhancements to existing protocols and new protocol designs, across the scope of both NGP contributions and approved documented output.