Справочник Пользователя для RAD Data comm IPmux-11

Chapter 1  Introduction 

Installation and Operation Manual 

1-22 

Functional Description 

IPmux-11 Ver. 2.00 

Ingress Egress 
If a double-tagged frame enters the transparent 

port, it is switched to the double-tagged port 

•  If the double-tagged port is not a member of the first 

VID of the frame, the frame is discarded 

•  If the double-tagged port is a member of the first VID 

of the frame, it removes the firs tag and transmits the 

frame tagged. 

If a tagged frame enters the transparent port, it 

is switched to the double-tagged port 

•  If the double-tagged port is not a member of the 

frame VID, the frame is discarded 

•  If the double-tagged port is a member of the frame 

VID, it removes the tag and transmits the frame 
untagged 

If an untagged frame enters the transparent port, 

the frame is discarded 

 

If a tagged frame enters the double-tagged port, 
the port adds tag (VID is the double-tagged port 

default VID and PRI is the double-tagged port 

default PRI), and switches the frame to the 

transparent port 

The transparent port transmits the frame unmodified 

(double tagged) 

If an untagged frame enters the double-tagged 
port, the port adds tag (VID is the double-tagged 

port default VID and PRI is the double-tagged 

port default PRI), and switches the frame to the 

transparent port 

The transparent port transmits the frame unmodified 

(tagged) 

 

When operating in the Mode G, the following rules apply: 
•  No VLANs can be created on the network port. 
•  Each user port has to be a member of its default VLAN ID, no other VLANs are 

•  Both user ports can get the same default VLAN ID. 
•  In either case, no traffic is allowed between two user ports.