RAD Data comm IPmux-11 Switch Behavior When Handling User and Network Traffic, Mode a, Mode B

Installation and Operation Manual Chapter 1 Introduction

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 1-9lists 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 1-15and Table 1-16.

Table 1-9. Switch Behavior (User and Network Traffic)

Network	Transparent	Untagged	Tagged	Double Tagged
User
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	The transparent port transmits the frame unmodified
switched to the other transparent port	(tagged)
If an untagged frame enters a transparent port, it	The transparent port transmits the frame unmodified
is switched to the other transparent port	(untagged)

Table 1-11. Mode B
Ingress	Egress
If a tagged frame enters the transparent port, it	The untagged port removes the tag, and transmits the
is switched to the untagged port	frame untagged
If a tagged frame enters the untagged port, it is	The transparent port transmits the frame unmodified
switched to the transparent port	(tagged)
If an untagged frame enters the transparent port,	The untagged port transmits the frame unmodified
it is switched to the untagged port	(untagged)
If a untagged frame enters the untagged port, it	The transparent port transmits the frame unmodified
is switched to the transparent port	(untagged)

IPmux-11 Ver. 2.00 Functional Description 1-19