开放系统互连（OSI）协议栈由许多标准协议组成,它们都基于OSI参考模型。这些协议是，一项国际安排,用来开发数据联网协议s,以及促进多厂商设备互操作性的其它标准s,的一部分。OSI的安排是出于一种对国际联网标准化的需要，设计成便于硬件系统和软件系统之间通信,而不管基础结构的差异。-The Open System Interconnection (OSI) protocol suite is comprised of numerous standard protocols that are based on the OSI reference model. These protocols are part of an international program to develop data-networking protocols and other standards that facilitate multivendor equipment interoperability. The OSI program grew out of a need for international networking standards and is designed to facilitate communication between hardware and software systems despite differences in underlying architectures.