Hello All,

The multicast broadcast filtering option under the SSID restricts the multicasting coming in from the wired side over to the AP. What if we have a small hotel environment where everyone is on a shared public wi-fi and each iPhone and android device is sending out mDNS discovery multicast queries? These will go not only to the wired side, but also in between the guests. These large number of always ongoing multicast traffic will drive the airtime usage to very high. I am trying to understand as to options available to filter within the users of wi-fi. The guest networking / client isolation features does not stop the flow of the multicast and broadcast traffic. Can I assume that EAP ACL with source of IP group of Public subnet and destination IP-Port Group of Public subnet with UDP to port 5353, will block this traffic, while still allowing it to go over to the LAN side where casting smart TVs will be located? Somehow I don't have any apple devices to test with, so wanted to check with community.

Thanks