Allied Telesis 2.6.1 manual Example output from the Show Switch Filter command

84 AT-8800 Series Switch User Guide

Figure 16: Example output from the SHOW SWITCH FILTER command.

Switch Filters

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EntryVLAN Destination Address Port Action Source

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0	default	(1)		aa-ab-cd-00-00-01	1	Forward	static
1	default	(1)		aa-ab-cd-00-00-02	1	Forward	static
0	marketing		(2)	aa-ab-cd-00-00-01	2	Discard	static
1	marketing		(2)	aa-ab-cd-00-00-02	2	Discard	learn

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Table 13: Parameters in the output of the SHOW SWITCH FILTER command

Parameter	Meaning
Entry	The number identifying the filter entry.
Destination Address	The destination MAC address for the entry.
VLAN	The VLAN name and identifier for the entry.
Port	The outbound port to match for the filter entry to be applied.
Action	The action specified by the filter entry; one of “Forward” or
	“Discard”.
Source	This parameter is either “static” (indicating the filter is a static
	filter) or “learned” (indicating the filter is present either
	because it has been added with the LEARN parameter of the
	SET SWITCH PORT command, or has been dynamically learned
	during normal intrusion detection operation).

For each VLAN, the destination MAC address of a frame to be forwarded is checked against the Forwarding Database. If there is no entry for the destination address and VLAN, the frame is transmitted on all ports in the VLAN that are in the ‘Forwarding’ or ‘Disabled’ states, except the port on which the frame was received. This process is referred to as flooding. If an entry is found in the Forwarding Database, but the entry is not marked as ‘Forwarding’ or the entry points to the same port the frame was received on, the frame is discarded. Otherwise, the frame is transmitted on the port specified by the entry in the Forwarding Database.

A dynamic entry is automatically deleted from the Forwarding Database when its ageing timer expires.

Software Release 2.6.1 C613-02039-00 REV A