how to check packet flooding in bridging

I am a newbie in networking and learned about bridging concepts .I have a device which functions as bridge which works in transparent mode and filter mode.In the latter mode , whenever the packet is received to Ethernet port (which is bind to bridge ports of bridge) it floods to other Ethernet ports except the received one through bridging, If the mac address is not learned .How can i ensure this ? can anyone suggest a method to test this.