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A filter can consist of multiple filter types. For
example, a filter can be created which is looking
for a source MAC Address of 00-14-E2-00-F9-34
and a VLAN Tag range of 10-25. This filter
definition is represented in the following Filter
Specifics Panel. With a filter of multiple filter
types, the saved filter will appear in the MIXED
filters tree. Otherwise, the specific Filter type
will be populated in the saved filter tree.
7.2.2.2.1 Include/Exclude Definition
Within a Filter Type, the filter can be defined as either an Include or an Exclude
Filter. These are mutually exclusive. Each Filter Type has a unique Include/
Exclude flag. For instance, the MAC Address Filter definition may be an Include
Filter, while a VLAN ID Filter may be an Exclude Filter. The Include Filter and
Exclude Filter check boxes apply to all of the Filter Types.
7.2.2.2.2 Include VLAN Tunneling Frames
The Include VLAN Tunneling Frames check box is found in the following Filter
Types:
VLAN ID Filter
IPv4 Address Filter
IPv4 PORT Filter
IPv6 Address Filter
This flag, if checked, forces the filter engine to examine an Ethernet frame to
determine if the frame is a VLAN tagged frame. If so, the specified filter will
accommodate an offset to correspondingly examine the packet structure for a
match whether the frame is VLAN tagged or not.
For example, if a filter is defined to match an IPv4 Source Address of
12.45.76.98, the filter engine examines the frame to determine if the source
address found at offsets 26,27,28,29 (zero based) are equal to 12,45,76,98. In
addition, if the VLAN Tunneling Frames checkbox is checked, the filter engine
will also check offsets 12,13,30,31,32,33 (zero based) for values equal to
81,00,12,45,76,98. If an incoming frame matches either of these definitions, the
frame will be passed by the filter engine.