I have several customers who have problems setting up Zebra QL220 Plus printers on their Cisco Wireless network running 1231ag ap's. These printers are "passive" devices which do not actively send data. If you setup the printers with dhcp, they will work because they send arp broadcasts out to request an ip address. If you set them up with static ip addresses, the printers never generate any network traffic and the access point will never see the device. Zebra support says its a Cisco problem with passive devices and to contact Cisco. To my knowledge this is a true statement since this does not happen to any other ap manufacturer. Zebra has a workaround that installs a "ping" utility on the printer which actually generates arp traffic and the printer will then work. Does anyone have an idea what a true solution would be to have a passive device work on the newer cisco ap's.