Command Line Reference Guide

Virtual Routing and Forwarding (VRF) | 1387
Starting in release 8.4.1.0, you can configure an IP subnet or address on a physical or VLAN interface
that overlaps the same IP subnet or address 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.
Example FTOS(conf-if-gi-1/1)#int gi 1/10
FTOS(conf-if-gi-1/10)#show config
!
interface GigabitEthernet 1/10
no ip address
shutdown
FTOS(conf-if-gi-1/10)#
FTOS(conf-if-gi-1/10)#ip vrf ?
FTOS(conf-if-gi-1/10)#ip vrf forwarding East
FTOS(conf-if-gi-1/10)#show config
!
interface GigabitEthernet 1/10
ip vrf forwarding East
no ip address
shutdown
FTOS(conf-if-gi-1/10)#
Related
Commands
ip vrf-vlan-block
e
Configure the total number of VLANs that can be configured per VRF.
Starting in FTOS 8.4.2.1, when VRF microcode is loaded on an E-Series
ExaScale or TeraScale router, the ip vrf-vlan-block number command is
deprecated.
Syntax
ip vrf-vlan-block number
To remove the VLAN block configuration, enter no vrf-vlan-block.
Parameters
Command Modes
CONFIGURATION
Command
History
Example FTOS#conf
FTOS(conf)#ip vrf-vlan-block 1024
FTOS(conf)#
ip vrf
Set the name of the VRF instance the VRF, or specify the default-vrf.
ip vrf-vlan-block
Configure the total number of VLANs that can be configured per VRF.
start-vlan-id
Set the starting VLAN ID for a VRF instance.
number
Total number of VLANs allotted for VRF instances.
Expressed in power of 2 (2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096)
Version 8.4.2.1 The ip vrf-vlan-block number command is deprecated.
Version 8.2.1.0 Introduced on the E-Series