Administrator Guide

Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.4.(0.0) Introduced on the S-Series and Z9000.
Usage Information
You can attach an interface to either a nondefault VRF or a management VRF.
To assign a port-back to a default VRF, remove the VRF association from the interface. You can use this only if
there is no IP address congured on the interface.
There must be no prior Layer 3 conguration on the interface when conguring VRF.
You must enable VRF before using this command.
You can congure an IP subnet or address on a physical or VLAN interface that overlaps the same IP subnet or
address congured on another interface only if the interfaces are assigned to dierent VRFs. If you assign two
interfaces to the same VRF, you cannot congure overlapping IP subnets or the same IP address to them.
Example
Dell# configure terminal
Dell(conf)# ip vrf red
Dell(conf-vrf)# description "Red Network"
Dell(conf-vrf)# show config
!
ip vrf red 4
description "Red Network"
Dell(conf-vrf)#
Dell(conf-if-gi-1/45)# int gi 1/46
Dell(conf-if-gi-1/46)# no shut
Dell(conf-if-gi-1/46)# ip vrf forwarding red
Dell(conf-if-gi-1/46)# ip add 100.1.1.1/24
Dell(conf-if-gi-1/46)#
Dell(conf-if-gi-1/46)#
Dell(conf-if-gi-1/46)#
Dell(conf-if-gi-1/46)# show config
!
interface GigabitEthernet 1/46
ip vrf forwarding red
ip address 100.1.1.1/24
no shutdown
Dell(conf-if-gi-1/46)#
ip route-export
Enables route leaking between VRFs. This command exports or shares IPv4 routes corresponding to one VRF with other nondefault VRFs.
Syntax
ip route-export tag [route-map-name]
Parameters
route-export Enter the keywords route-export to leak or share routes between VRFs.
tag Enter a tag (export route target) to expose routes to other VRFs. This tag acts as an
identier for exported routes. Use this identier while importing these routes into another
nondefault VRF.
1644 Virtual Routing and Forwarding (VRF)