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CHAPTER 15
Configuring Transparent Bridging
Overview
How Transparent Bridging Works
Copyright © 2010, Juniper Networks, Inc.
This chapter provides an introduction to transparent bridging and describes how to
configure transparent bridging on E Series routers.
This chapter contains the following sections:
Overview on page 465
Platform Considerations on page 470
References on page 471
Before You Configure Transparent Bridging on page 471
Configuration Tasks on page 472
Configuration Examples on page 485
Monitoring Transparent Bridging on page 487
This section introduces important concepts that you need to understand before
configuring transparent bridging. These concepts include:
How Transparent Bridging Works on page 465
Bridge Groups and Bridge Group Interfaces on page 466
Bridge Interface Types and Supported Configurations on page 467
Subscriber Policies on page 468
Concurrent Routing and Bridging on page 469
Transparent Bridging and VPLS on page 470
Unsupported Features on page 470
A transparent bridge is a data-link layer (layer 2) relay device that connects two or more
networks or network systems. When a transparent bridge powers up, it automatically
begins learning the network topology by examining the media access control (MAC)
source address of every incoming packet. The bridge then creates an entry in the
forwarding table consisting of the address and associated interface where the packet
was received.
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