Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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Use the no version to restore the default value.
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See unknown-protocol.
Enabling Concurrent Routing and Bridging
To enable concurrent routing and bridging (CRB) for all bridge groups on the router:
1.
From Global Configuration mode, issue the bridge crb command.
host1(config)# bridge crb
2.
(Optional) Use the appropriate show command to verify that CRB is enabled for
the bridge groups on your router.
host1# show bridge groups details
bridge crb
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Use to enable concurrent routing and bridging (CRB) for all bridge groups
configured on an E Series router.
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CRB is disabled by default.
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When CRB is enabled, the router can route a protocol among a group of interfaces
in one bridge group and concurrently bridge the same protocol among a separate
group of interfaces in a different bridge group.
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The command takes effect for all bridge groups on an E Series router; you cannot
enable CRB for some bridge groups on the router but not for others.
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Example
host1(config)# bridge crb
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Use the no version to disable CRB on all bridge groups and restore the default
bridging capability.
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See bridge crb.
Configuring Explicit Routing
After you enable concurrent routing and bridging, you may need to issue the bridge
route command to configure explicit routing for IP, MPLS, or PPPoE protocols if both
of the following conditions are true:
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You configure new IP, MPLS, or PPPoE interfaces after you issue the bridge crb
command to enable concurrent routing and bridging.
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The IP, MPLS, or PPPoE interface is the first occurrence of this protocol in the
bridge group.
For example, assume that you want to route (rather than bridge) IP, MPLS, and PPPoE
interfaces, but only IP and MPLS interfaces are configured when you issue the
bridge
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Configuration Tasks
JUNOSe 11.1.x Link Layer Configuration Guide