Users Guide

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.
route-map-name (Optional) Enter the name of the route-map to lter the exported routes.
You can leak global routes to VRFs. As the global RTM usually contains a large pool
of routes, when the destination VRF imports global routes, these routes are
duplicated into the VRF's RTM. As a result, it is mandatory to use route-maps to
lter out leaked routes while sharing global routes with VRFs.
Command Modes
• VRP mode
• CONFIGURATION mode
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
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Virtual Routing and Forwarding (VRF)