Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Руководство по настройке

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Chapter 14
Configuring Bridged Ethernet
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 515, for details.
This chapter contains the following sections:
■
Overview on page 443
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Platform Considerations on page 446
■
References on page 447
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Configuring Bridged Ethernet on page 447
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Configuring VLANs over Bridged Ethernet on page 453
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Configuring S-VLANs over Bridged Ethernet on page 458
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Configuring the MTU Size for Bridged Ethernet on page 460
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Monitoring Bridged Ethernet on page 461
Overview
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 .
Overview
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