Example 4 – Basic understanding of Hybrid VLANs

Receiving

Tagged VID

Destination

Transmitting

Notes

Port #

in packet

Address

Port #s

 

TX1

Untagged

MAC on port TX2

TX2

Unicast Traffic

TX1

Untagged

MAC on port TX3

TX3

Adds VID 2 in the packet

TX1

VID 4

MAC on port TX2

--

Packet Discarded

TX1

VID 4

MAC on port TX3

--

Packet Discarded

TX1

VID 2

MAC on port TX2

TX2

Strips VID off packet

TX3

Untagged

MAC on port TX6

TX6

Unicast Traffic

TX3

Untagged

Unknown MAC

TX4-TX8

Floods VLAN 1

TX3

VID 4

MAC on port TX5

--

Packet Discarded

TX3

VID 4

MAC on port TX4

--

Packet Discarded

TX3

VID 2

MAC on port TX4

TX4

Does not strip VID off packet

TX3

VID 2

MAC on port TX1

TX1

Strips VID off packet

(Revised 2010-11-15)

Page 148 of 156

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Image 148
N-Tron 708M12 user manual Example 4 Basic understanding of Hybrid VLANs