The cisco 5520 series wireless lan controller is a highly scalable service rich resilient and flexible platform that is ideal for medium sized to large enterprise and campus deployments as part of the cisco unified access solution the 5520 is optimized for the next generation of wireless networks 80211ac wave 2 location aware bonjour and chromcast support services advertised across a layer 3 network at a user and device level software defined segmentation with cisco trustsec reduces access