SWAN (Structured Wireless-Aware Network) is a technology that incorporates a wireless local area network (wireless LAN or WLAN) into a wired wide-area network (WAN). The technology, developed by Cisco Systems, makes it possible for a wireless LAN to operate as a seamless extension of a wired network. As a result, an existing wired network can be made to serve hundreds of users, organizations, corporations, or agencies over a large geographic area.
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A SWAN is said to be scalable, secure, and reliable. Special features include centralized management, simplified deployment, security policy monitoring, rogue access point detection and location, interference-source detection and location, radio-frequency (RF) scanning and monitoring, enhanced fault monitoring and troubleshooting tools, and fault tolerance.