Juniper JUNOSE 11.0, Command Reference Manual

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ip vrf forwarding
Syntax
[ no ] ip vrf forwarding vrfName [ fallback global ]
Release Information
Command introduced before JUNOSe Release 7.1.0.
Description
Assigns a VRF to an interface or subinterface. Optionally specifies secondary routing
table lookup on the parent (global) virtual router forwarding table if a lookup on the
initial VRF forwarding table does not yield any results. The
no version removes the
assignment or discontinues the secondary routing table lookup option.
NOTE: The ip vrf forwarding command changes the prompt to indicate that the CLI
is now in Interface or Subinterface Configuration mode within the child VRF. This
condition persists only for as long as you are configuring attributes on the given
interface within the VRF. Entering a top-level command, such as
interface , within
this VRF context takes the CLI out of the VRF context back to the parent VR context.
When you issue the ip vrf forwarding command from within the Interface
Configuration or Subinterface Configuration mode of the parent VR, the IP address
and other attributes of the interface are deleted from the interface. You must then
reconfigure the IP attributes in the context of the VRF after issuing the command.
Options
vrfName —Name of the VRF; a string of 1–32 alphanumeric characters
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fallback global—Specifies secondary routing table lookup on the parent (global)
virtual router forwarding table, if an initial VRF forwarding table lookup does not
yield results.
Mode
Interface Configuration, Subinterface Configuration
ip vrf forwarding
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Chapter 10: I Commands