Reference Guide

Assigning an Interface to a VRF
You must enter the ip vrf forwarding command before you configure the IP address or any other setting on an interface.
NOTE: You can configure an IP address or subnet on a physical or VLAN interface that overlaps the same IP address or
subnet configured on another interface only if the interfaces are assigned to different VRFs. If two interfaces are assigned
to the same VRF, you cannot configure overlapping IP subnets or the same IP address on them.
Task Command Syntax Command Mode
Assign an interface to a VRF instance.
ip vrf forwarding vrf-name
INTERFACE
Assigning a Front-end Port to a Management VRF
Starting in 9.7(0.0) release, you can assign a front-end port to a management VRF and make the port to act as a host interface.
NOTE: You cannot assign loop-back and port-channel interfaces to a management port.
To assign a front-end port to a management VRF, perform the following steps:
Task Command Syntax Command Mode
Enter the front-end interface that you
want to assign to a management
interface.
interface tengigabitethernet
1/1
CONFIGURATION
Assign the interface to management
VRF.
NOTE: Before assigning a front-end
port to a management VRF, ensure
that no IP address is configured on
the interface.
ip vrf forwarding management
INTERFACE CONFIGURATION
Assign an IPv4 address to the interface.
NOTE: You can assign either an IPv4
or an IPv6 address but not both.
ip address 10.1.1.1/24
INTERFACE CONFIGURATION
Assign an IPv6 address to the interface.
NOTE: You can also auto configure
an IPv6 address using the ipv6
address autoconfig command.
ipv6 address 1::1
INTERFACE CONFIGURATION
View VRF Instance Information
To display information about VRF configuration, enter the show ip vrf command.
Task
Command Syntax Command Mode
Display the interfaces assigned to a VRF
instance. To display information on all
VRF instances (including the default VRF
0), do not enter a value for vrf-name.
show ip vrf [vrf-name]
EXEC
Assigning an OSPF Process to a VRF Instance
OSPF routes are supported on all VRF instances. Refer toOpen Shortest Path First (OSPFv2) for complete OSPF configuration
information.
Virtual Routing and Forwarding (VRF)
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