Administrator Guide

Version Description
9.9(0.0) Introduced on the C9010.
9.8(0.0) Introduced on the S3048-ON and S4048-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
Use this command to attach an interface to a configured VRF. You can attach an interface to either a non-default
VRF or a management VRF. To assign a port-back to a default VRF, remove VRF association from the interface.
You can use this only if there is no IP address configured on the interface.
There must be no prior Layer 3 configuration on the interface when configuring VRF.
VRF must be enabled prior to implementing this command.
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.
ip route-export
Enable route leaking between VRFs. Export or share IPv4 routes corresponding to one VRF with other non-default VRFs.
C9000 Series
Syntax
ip route-export tag [route-map-name]
Parameters
route-export Enter the route-export keyword 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
identifier for exported routes. You can use this identifier while importing these routes into
another non-default VRF.
route-map-name (Optional) Enter the name of the route-map to filter the exported routes.
You can leak global routes for VRF. 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 filter out leaked routes
while sharing global routes with VRFs.
Defaults N/A
Command Modes VRF MODE
CONFIGURATION
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S4810, S4820T, S5000, S6000, S6000–ON, and Z9500.
Usage Information Use theip route-export tag command without specifying the route-map attribute to export all the routes
corresponding to a source VRF. This action exposes source VRF routes to various other VRFs, which then import
these routes using the ip route-import tag command. In Dell Networking OS, you can configure only one
route-export per VRF as only one set of routes can be exposed for leaking (or sharing). However, you can
configure multiple route-import targets because a VRF accepts routes from multiple VRFs.
You can expose a unique set of routes from the source VRF for sharing with other VRFs. When there are two
VRFs export routes, there is no option to discretely filter leaked routes from each source VRF. You cannot import
one set of routes from one VRF and another set of routes from another VRF.
1712 Virtual Routing and Forwarding (VRF)