Intermec WA21 System Manual page 88

Chapter 3 — Configuring the Ethernet Network
74
Set the third filter expression as shown below.
Example 2 – Third Filter Expression
Parameter Value
ExprSeq 3
Offset 6
Mask ff ff ff
ff ff ff
OP NE
Value ID 3
Action Drop
Explanation
The third expression that is executed.
Checks the source Ethernet address, which starts 6 bytes
from the destination address.
Checks the 6-byte source Ethernet address for an exact
match.
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 not equal. (Compare the source Ethernet
address with the list of MAC addresses from the Filter
Values menu.)
This filter expression applies to value ID 3 from the Filter
Values menu.
If the source Ethernet address does not match any address in
the list on the Filter Values menu, then drop the frame.
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