Juniper JUNOS OS 10.3 - XML MANAGEMENT PROTOCOL GUIDE 6-30-2010, 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
•
•
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
965 Copyright © 2010, Juniper Networks, Inc.
Chapter 10: I Commands