RAD Data comm IPmux-11 - Manual (Page 33)

Installation and Operation Manual Chapter 1 Introduction
IPmux-11 Ver. 2.00 Functional Description 1-19
Switch Behavior When Handling User and Network Traffic
The way the network and user ports handle the traffic depends on the selected
port mode (transparent, untagged, tagged or double tagged) and frame type
(untagged, tagged or double tagged).
Table 1-9 lists all operation modes of the
network and user ports. The modes are explained in greater detail in Table 1-10 ,
Table 1-11 , Table 1-12 , Table 1-13 , Table 1-14 , Table 1-15 and Table 1-16 .
Table 1-9. Switch Behavior (User and Network Traffic)
Network
User
Transparent Untagged Tagged Double Tagged
Transparent Mode A Mode B Mode C Not applicable
Untagged Mode B Mode D Mode E Not applicable
Tagged Mode C Mode E Mode F Not applicable
Double Tagged Mode G Not implemented Not implemented Not applicable
Table 1-10. Mode A
Ingress Egress
If a tagged frame enters a transparent port, it is
switched to the other transparent port
The transparent port transmits the frame unmodified
(tagged)
If an untagged frame enters a transparent port, it
is switched to the other transparent port The transparent port transmits the frame unmodified
(untagged)
Table 1-11. Mode B
Ingress Egress
If a tagged frame enters the transparent port, it
is switched to the untagged port
The untagged port removes the tag, and transmits the
frame untagged
If a tagged frame enters the untagged port, it is
switched to the transparent port
The transparent port transmits the frame unmodified
(tagged)
If an untagged frame enters the transparent port,
it is switched to the untagged port
The untagged port transmits the frame unmodified
(untagged)
If a untagged frame enters the untagged port, it
is switched to the transparent port
The transparent port transmits the frame unmodified
(untagged)