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JunosE 11.2.x Link Layer Configuration Guide
Transparent Bridging and VPLS
Unsupported Features
Platform Considerations
Module Requirements
470
As a result, it is important that you issue the bridge crb command after you configure all
bridge group interfaces. In this way, the router can detect all IP, MPLS, or PPPoE interfaces
in your configuration and direct the bridge group to route traffic from these protocols.
Except for the bridge crb and bridge route commands, you can use the existing
transparent bridging commands to configure one or more instances of the Virtual Private
LAN Service (VPLS), referred to as VPLS instances, on the router. VPLS employs a layer
2 virtual private network (VPN) to connect multiple individual LANs across a service
provider's MPLS core network. The geographically dispersed multiple LANs functions as
a single virtual LAN.
A single VPLS instance is analogous to a bridge group, and performs similar functions.
In effect, a VPLS instance is a new or existing bridge group that has additional VPLS
attributes configured.
For details about configuring and using VPLS, see chapter Configuring VPLS in JunosE
BGP and MPLS Configuration Guide.
The current E Series implementation of transparent bridging does not support the
spanning-tree algorithm as defined in IEEE 802.1D.
NOTE: Because the spanning-tree algorithm is not currently supported, make sure that
your topology avoids the creation of network loops.
You can configure transparent bridging on the following E Series Broadband Services
Routers:
E120 router
E320 router
ERX1440 router
ERX1410 router
ERX710 router
ERX705 router
ERX310 router
For information about the modules that support transparent bridging on ERX14xx models,
ERX7xx models, and the ERX310 router:
See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
Copyright © 2010, Juniper Networks, Inc.
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