my network is AP ( RB333) to Multiple CPE (RB133c) point to multipoint
it is working fine when it is used for VPN or normal connectivity
when i start multicast traffic by including tewo clients on same AP
WLAN traffic show me higher data rate and on Ether1 it show actual traffic
Please describe your problem so that everyone can understand.
Disable default forward on your wireless interface and use firewall to block CPE to CPE communication. The excess traffic your are seeing on wlan1 might just be communication amount CPEs connected to the AP.
Multicast is sending stream to all bridged wds clients.
You can try to disable default forwarding as skillful suggested, or use bridge filters to drop multicast between wds clients
can you bit more help me to stop cpe to cpe communication as i had earlier disable default forwarding