N-Tron 708M12 user manual Example 5 - Basic understanding of Overlapping VLANs

Models: 708M12

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Example 5 – Basic understanding of Overlapping VLANs

Example 5 – Basic understanding of Overlapping VLANs

Receiving

Tagged VID

Destination

Transmitting

Notes

Port #

in packet

Address

Port #s

 

TX1

Untagged

MAC on port TX2,

TX2

Unicast Traffic

 

 

VID=4

 

 

TX1

Untagged

MAC on port TX3

TX2

Floods VLAN 4

TX1

VID 4

MAC on port TX2,

TX2

Strips VID off packet

 

 

VID=4

 

 

TX1

VID 4

Unknown MAC

TX2

Strips VID off packet & Floods VLAN 4

TX2

Untagged

MAC on port TX1,

TX1

Unicast Traffic

 

 

VID=2

 

 

TX2

Untagged

MAC on port TX5,

TX5

Unicast Traffic

 

 

VID=2

 

 

TX2

VID 2 or 3

MAC on port TX5,

TX5

Strips VID off packet (or floods if MAC

 

 

VID=2 and 3

 

is unknown for VID)

TX2

Untagged

Unknown MAC

TX1, TX3-TX8

Floods VLAN 2

TX3

Untagged

MAC on port TX1,

TX2, TX4-TX8

Floods VLAN 3

 

 

VID=3

 

 

TX3

Untagged

MAC on port TX2,

TX2

Unicast Traffic

 

 

VID=3

 

 

TX3

Untagged

MAC on port TX5,

TX5

Unicast Traffic

 

 

VID=3

 

 

TX3

VID 2 or 3

MAC on port TX2,

TX2

Strips VID off packet (or floods if MAC

 

 

VID=2 and 3

 

is unknown for VID)

Revision 071108

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Page 98
Image 98
N-Tron 708M12 user manual Example 5 - Basic understanding of Overlapping VLANs