Intermec MobileLAN access WA21 System Manual page 90

Chapter 3 — Configuring the Ethernet Network
76
3 Configure the filter expressions parameters. For help, see the next table.
4 Click Submit Changes to save your changes. To activate your changes,
from the menu bar click Save/Discard Changes, and then click Save
Changes and Reboot. For help, see "Saving Configuration Changes"
on page 36.
Filter Expressions Parameter Descriptions
Parameter Explanation
ExprSeq Indicates the order in which the filters will be executed. When you
(Expression change the parameter, the statements are reordered and renumbered so
Sequence) the Expression Sequence order is maintained. The range is from 0 to
255.
This parameter works with the Action parameter; for example, if the
action is set to And, then the next sequence in another expression is
processed.
Offset Identifies a point inside the frame where testing for the expression is to
start. The range is from 0 to 65535.
Mask Applies a data pattern to the frame. If the data pattern in the mask
matches the frame, then the specific action is performed. The mask
indicates the bits that are significant at the specified offset. A bit is
significant if a bit in the mask is set to one. If this field is empty, the
length of the field is determined by the longest value in the Filter
Values menu for the specified value ID. The mask values are entered in
hexadecimal pairs. You can enter 0 to 8 pairs.
Op Performs a logical operation when a data pattern matches a value in the
(Operation) Filter Values menu to determine if the specified action should be
taken. Valid operations include: EQ (equal), NE (not equal), GT
(greater than), LT (less than or equal)
MobileLAN access System Manual