Allied Telesis AT-WA7501 - Manual (Page 95)

AT-7500 and AT-WA7501 Installation and User’s Guide
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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.
Table 13. Example 2 – First Filter Expression
Parameter Value Explanation
ExprSeq 1 The first expression that is executed. You
must have an expression for each Value
ID that is listed in the Filter Values menu.
Offset 0 Since the filter is applied to the destination
address, which is the first value in the
frame, the offset is 0.
Mask 01 Checks only the Ethernet multicast bit.
Op EQ Compares the value after the offset and
mask are applied to the value of the Value
ID from the Filter Values menu to see if
they are equal. (If the value at the offset
equals the specified value on the Filter
Values menu, the frame is multicast.)