Allied Telesis AT-WA7500, AT-WA7501 manual Check for a DIX IP frame

Chapter 3: Configuring the Ethernet Network

Example 2

This example shows how to use Ethernet filters to discard all DIX IP multicast frames except those from selected devices. Three entries have a value ID of 3 to demonstrate how to enter a list. All entries with the same value ID belong to the same list. For this example, set these filter values.

Table 24. Example 2 - Filter Values

Value ID	Value	Description
1	08 00	Check for a DIX IP frame.
2	01	Check for a multicast frame.
3	00 c0 b2 00 00 01	Check for these specific MAC
	00 c0 b2 00 00 02	device addresses.
	00 c0 b2 00 00 03

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.

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