N-Tron 7014FX2 User Manual
6/28/2007 page 141 of 145
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
1
Default VLAN
--
--
YES
All
0
2
VLAN -2
P1-P12
--
YES
All
0
3
VLAN -3
P2-P12
--
YES
All
0
4
VLAN -4
P1-P2
--
YES
All
0
Receiving
Port #
Port #
Tagged VID
in packet
in packet
Destination
Address
Address
Transmitting
Port #s
Port #s
Notes
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
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
Port
No
Port
Na
me
me
PVID
1
P1
4
2
P2
2
3
P3
3
4
P4
2
5
P5
3
...
…
…
11
P11
3
12
P12
3