Chapter 1 Introduction Installation and Operation Manual
1-22 Functional Description IPmux-11 Ver. 2.00

Table 1-16. Mode G

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

valid.

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