N-Tron 7014TX, 7014FX2, 7014FXE2 Example 5 Basic understanding of Overlapping VLANs, 28/2007 141

Example 5 – Basic understanding of Overlapping VLANs

VLAN Configuration View Ports Configuration View

		VLAN Status	: Enable
VLAN ID	VLAN Name	Untagged Port(s) Tagged Port(s) Mgmt Port Admit Mirror Port					Port	Port
1	Default VLAN	--	--	YES	All	0			PVID
							No	Na
								me
2	VLAN -2	P1-P12	--	YES	All	0
							1	P1	4
3	VLAN -3	P2-P12	--	YES	All	0
							2	P2	2
4	VLAN -4	P1-P2	--	YES	All	0
							3	P3	3
							4	P4	2
							5	P5	3

					...	…	…
					11	P11	3
					12	P12	3
Receiving	Tagged VID	Destination	Transmitting	Notes
Port #	in packet	Address	Port #s
Port P1	Untagged	MAC on port P2	Port P2	Unicast Traffic
Port P1	Untagged	MAC on port P3	--	Packet Discarded
Port P1	VID 4	MAC on port P2	Port P2	Strips VID off packet
Port P1	VID 4	Unknown MAC	Port P2	Strips VID off packet & Floods VLAN
				4
Port P2	Untagged	MAC on port P1	Port P1	Unicast Traffic
Port P2	Untagged	MAC on port P5	Port P5	Unicast Traffic
Port P2	VID 2 or 3	MAC on port P5	Port P5	Strips VID off packet
Port P2	Untagged	Unknown MAC	Port P4	Floods VLAN 2
Port P3	Untagged	MAC on port P1	--	Packet Discarded
Port P3	Untagged	MAC on port P2	Port P2	Unicast Traffic
Port P3	Untagged	MAC on port P5	Port P5	Unicast Traffic
Port P3	VID 2 or 3	MAC on port P2	Port P2	Strips VID off packet

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