Ruckus manufacturing has identified a small number of R600 which may exhibit reboots when powered by PoE switch or injectors, DC not affected.
Ruckus will advance replace all field units with serial numbers beginning with 2517xxxx to 2917xxxx (see AP label or controller monitor AP page).
Customers should contact Ruckus Support and provide serial numbers of affected R600 model APs, to get advanced replacement RMAs.
https://support.ruckuswireless.com/contact-usSee also public KBA-6489, and it's attachment (link below) for similar information.
https://c.na3.content.force.com/servlet/fileField?id=0BE50000000Gwbl