N-Tron 9000 user manual Example 3 Basic understanding of tagged VLANs Admit All

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

(Revised 2010-7-2) page 141 of 145