Specifications

Installation and Operation Manual Chapter 1 Introduction
RICi-4E1/T1, RICi-8E1/T1 Ver. 2.0 Functional Description 1-13
Forwarding Process
The forwarding process is performed based on the frame MAC Destination
Address (MDA). The frame is forwarded to the Bridge/port specified in the MAC
table for this MAC.
Frames are forwarded, dropped or flooded at this stage for the following reason:
• Forwarded: A frame will be forwarded according to its DA, to the bridge port
where its DA was learned.
• Dropped: If the port for that DA entry in the MAC table is the port on which
the frame was received, the frame will be dropped.
• Flooded:
 If there is no information regarding the DA in the MAC table, the frame is
flooded to all ports.
 Frames with multicast or broadcast address are flooded to all ports.
Transmission Process
In this bridge mode (VLAN-unaware), the frames are transmitted unchanged: No
tags are added or removed.
VLAN Stacking
VLAN stacking mode for a bridge port refers to the addition of a tag to an
incoming frame either at ingress or egress (regardless of whether it already has
an existing VLAN tag), and removal of a tag at ingress or egress when the frame
leaves from this port.
This setting is independent of the bridge activity.