Administrator Guide

tag Enter a tag (ASN number) as the 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 to be made available to VRFs. As the global RTM usually contains a large
pool of routes, when the destination VRF imports global routes, these routes will be
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) Introducued 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 You can use the ip 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's routes to various other VRFs, which
then import these routes using the ip route-import tag command. In Dell Networking OS, you can
configure at most one route-export per VRF as only one set of routes is exposed for leaking. 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 leaking to other VRFs. When two VRFs leak or
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.
Only active routes are eligible for leaking. For example, if one VRF has two routes corresponding to BGP and
OSPF, in which the BGP route is not active, the OSPF route takes precedence over BGP. Even though the Target
VRF has specified filtering options to match BGP, the BGP route is not leaked as that route is not active in the
Source VRF.
Related
Commands
ipv6 route-import – imports IPv6 routes from another VRF.
ipv6 route-import
Import IPv6 routes leaked by another VRF using the tag specified by that VRF during export of these routes.
C9000 Series
Syntax
ipv6 route-import tag [route-map-name]
Parameters
route-import Enter the keyword route-import to import IPv6 routes into the VRF.
tag Enter a tag (ASN number) to specify an import route target for importing routes from
another VRF. To import leaked routes from another VRF, you must use the same ASN
number that is specified as the export route target at the source VRF.
route-map-name Enter the name of the route-map to filter the imported routes.
NOTE: You must use the route-map attribute while importing routes from
the global RTM. Route-maps enable you to filter routes at the import end
based on the matching criteria that you define in the route-map.
Command Modes
VRF MODE
CONFIGURATION
1714 Virtual Routing and Forwarding (VRF)