Best way to filter broadcast & multicast traffic on FlexConnect with local switching?

[sysmalainen]

Hi all,

I have noticed that when deploying FlexConnect local switching on a large scale environment, the amount of multicast, broadcast and unknown unicast is getting to disturb the service. IPv6 broadcasts, arp, chatty protocols etc. are flooding the radios. 

When the WLANs are tunneled the WLC drops broadcast as default. Are ACLs the only way to tackle this issue when using FlexConnect with local switching? If this is the case, what kind of ACLs are you usually deploying on a normal environment? 

[paulpi-cn6300]

I have this problem also.  The multicast traffic comes from the HUB location where the controllers are located, get encapsulated into CAPWAP tunnel, and sent to all the access points located in every branch office.  This traffic is saturating my small WAN pipes.  I spoke to Cisco TAC and they really did not have an answer.   Were  you able to get a solution?