Configuring Bridged Ethernet; Overview - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

CHAPTER 14

Configuring Bridged Ethernet

Overview

Copyright © 2010, Juniper Networks, Inc.
This chapter describes how to configure bridged Ethernet on E Series routers.
E Series routers also support bridged Ethernet on dynamic interfaces. See "Configuring
Dynamic Interfaces" on page 511, for details.
This chapter contains the following sections:
Overview on page 443
Platform Considerations on page 446
References on page 447
Configuring Bridged Ethernet on page 447
Configuring VLANs over Bridged Ethernet on page 452
Configuring S-VLANs over Bridged Ethernet on page 457
Configuring the MTU Size for Bridged Ethernet on page 459
Monitoring Bridged Ethernet on page 460
Bridged Ethernet allows multiple upper-layer interface types (IP and PPPoE) to be
simultaneously multiplexed over the same interface. You can set up the router to either
terminate interfaces and route data or to pass data transparently through the router to
another terminating device. This capability supports multiple client devices that use both
IP and Point-to-Point Protocol over Ethernet (PPPoE) encapsulation over an Ethernet
LAN.
NOTE: Although connection-based forwarding is not supported on any
E Series router, as an alternative, you can configure a local cross-connect,
which uses layer 2 services over MPLS to transmit data between two layer 2
interfaces that reside on the same E Series router. Configuration of local
cross-connects is supported on all E Series routers. For more information
about configuring local cross-connects, see chapter Configuring Layer 2
Services over MPLS in JunosE BGP and MPLS Configuration Guide.
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