N-Tron 9000 Series Example 3 Basic understanding of tagged VLANs Admit All, 17/2007 134

Example 3 – Basic understanding of tagged VLANs (Admit – All )

VLAN Configuration View Ports Configuration View

VLAN Status : Enable
VLAN ID VLAN Name Untagged Port(s)	Tagged Port(s)	Mgmt Port Admit Mirror Port

1	Default VLAN	--	A3-A6,B1-B6,C1-C6,D1-D6	YES	All	0
2	VLAN -2	--	A1-A2	YES	All	0

Port	Port	PVID
No	Name
1	A1	**
2	A2	**
3	A3	**
...	…	…
23	D5	**
24	D6	**

Receiving	Tagged VID	Destination	Transmitting	Notes
Port #	in packet	Address	Port #s
Port A1	Untagged	MAC on port A2	Port A2	Adds VID 2 to packet
Port A1	VID 2	MAC on port A2	Port A2	Unicast Traffic
Port A1	VID 4	MAC on port A2	--	Packet Discarded
Port A1	VID 2	Unknown MAC	Port A2	Floods VLAN 2
Port A3	Untagged	Unknown MAC	Port A4-D6	Adds VID 1 to packet & Floods VLAN 1
Port A3	VID 1	MAC on port A6	Port A6	Unicast Traffic
Port A3	VID 1	Unknown MAC	Port A4-D6	Floods VLAN 1
Port A3	VID 4	MAC on port B2	--	Packet Discarded

Example 4 – Basic understanding of Hybrid 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

1	Default VLAN A3-A6,B1-B6,C1-C6,D1-D6		--	YES	All	0
2	VLAN -2	A1-A2	A3-A4	YES	All	0

Port Port PVID No Name

1 A1 2

2 A2 2

3 A3 1

	…	…	…
23		D5	1
24		D6	1

Receiving	Tagged VID	Destination	Transmitting	Notes
Port #	in packet	Address	Port #s
Port A1	Untagged	MAC on port A2	Port A2	Unicast Traffic
Port A1	Untagged	MAC on port A3	Port A3	Adds VID 2 in the packet
Port A1	VID 4	MAC on port A2	--	Packet Discarded
Port A1	VID 4	MAC on port A3	--	Packet Discarded
Port A1	VID 2	MAC on port A2	Port A2	Strips VID off packet
Port A3	Untagged	MAC on port A6	Port A6	Unicast Traffic
Port A3	Untagged	Unknown MAC	Port A4-D6	Floods VLAN 1
Port A3	VID 4	MAC on port A5	--	Packet Discarded
Port A3	VID 4	MAC on port A4	--	Packet Discarded
Port A3	VID 2	MAC on port A4	Port A4	Strips VID off packet
Port A3	VID 2	MAC on port A1	Port A1	Strips VID off packet

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