Advanced Bridging Concepts; Introduction; Bridge Ports - Alcatel speed touch home Advanced User's Manual

14 Advanced Networking Concepts

14.3 Advanced Bridging Concepts

14.3.1

Introduction

14.3.2

Bridge Ports

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Bridging is a LAN technology that transparently relays Ethernet
frames between Bridge ports. Depending on the destination MAC
addresses of Ethernet frames, the Bridge makes decisions whether
to forward or discard frames.
Central to the operation of a data bridge is its filtering database.
All forwarding and filtering actions are based on information in
this database.
MAC RELAY ENTITY
REMOTE
PORTS
ADSL/ATM
Virtual Channels
Figure 76 Simplified Bridge Architecture
Ethernet frames are relayed between the LAN port and the
ADSL/ATM ports. The ADSL/ATM ports, sometimes referred to as
virtual ports, are cross connected over the public network to
remote destinations.
Filtering Database
LAN PORT
ETHERNET
adsl 0633/ 01
3EC 17096 AAAA TCZZA Ed. 01