Thanks in advance for any responses. I understand that broadcast traffic is not passed by the WLC(by default) but in our situation we have centralized WLC's. We keep the WLC's in data centers and have hundreds of sites that have AP's in local mode, hence CAPWAP all traffic to the WLC's via our fiber network. All sites have their own(sometimes several) L3 networks with a router at reach site. Here is the foggy part for me. Is all of the, wireless client, broadcast traffic blocked only at the WLC or will the local router block that CAPWAP'd broadcast traffic. I am hoping that I can use a /21 to serve all clients on one WLAN for ease but obviously don't want to flood our wan with unneeded broadcast traffic. We do use Flex in some case's but it doesn't apply to the situation I am curious about.