Allied Telesis AT-WA7500 - Manual (Page 80)

3 - Configuring the Ethernet Network
80
You must enter a filter expression for each Value ID in the Filter Values
menu. In this example, three expressions combine to form a single
compound expression. The compound expression forms an advanced
filter that drops all DIX IP multicast frames except those from the three
Ethernet stations whose addresses are listed on the Filter Values menu.
The default action is the opposite of the action specified in the last
expression. In this example, the action of the last expression is drop;
therefore, the default action is pass. Any frame that meets the conditions
specified in the advanced filter is passed.
Set the first filter expression as shown below.