The Air Force Research Laboratory (AFRL) is sponsoring an effort to develop Plug-and-Play (PnP) technology for spacecraft systems. The Space PnP Architecture (SPA) supports a method of constructing arbitrarily complex arrangements of components. SPA is a networked data exchange model. This paper presents the SPA network architecture in relation to the standard five layers of the Open System Interconnect (OSI) model. The responsibilities and functionality of each layer are described. The SPA networking provides a unified methodology for self-discovery and self-configuration of heterogeneous PnP networks. The SPA networking approach is shown to be elegant, robust, and scalable.
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机译：空军研究实验室（AFRL）赞助了一项努力，为航天器系统开发即插即用（PnP）技术。 Space PnP体系结构（SPA）支持一种构造任意复杂的组件排列的方法。 SPA是一种网络数据交换模型。本文介绍了与开放式系统互连（OSI）模型的标准5层相关的SPA网络体系结构。描述了每一层的职责和功能。 SPA网络为异构PnP网络的自我发现和自我配置提供了统一的方法。 SPA联网方法显示出优雅，强大和可扩展的特点。
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