Dell W-Series 304 Instant 6.5.1.0-4.3.1.0 CLI Reference Guide - Page 2361

Parameter Description Range IMPORTANT: If you enable the all option, you must also enable the Broadcast-Filter ARP parameter in the stateful firewall configuration to prevent ARP requests from being dropped. Note also that although a virtual AP profile can be replicated from a master controller to local controllers, stateful firewall settings do not. If you select the broadcastfilter all option for a Virtual AP Profile on a master controller, you must enable the broadcast-filter arp setting on each individual local controller. If you enable the arp option, all broadcast ARP requests are converted to unicast and sent directly to the client. You can check the status of this option using the show ap active and the show datapath tunnel command. If enabled, the output will display the letter a in the flags column. Do not enable the arp option for virtual APs configured in bridge forwarding mode. This configuration parameter is only intended for use for virual APs in tunnel mode. In tunnel mode, all packets travel to the controller, so the controller is able to convert ARP requests directed to the broadcast address into unicast. When a virtual AP is configured to use bridge forwarding mode, most data traffic stays local to the AP, and the controller is not able to convert that broadcast traffic. Default 2361| wlan virtual-ap Dell Networking W-Series ArubaOS 6.5.x | Reference Guide