Reference Guide

Version Description
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.
Only active routes are eligible for sharing. For example, if one VRF has two routes
corresponding to BGP and OSPF, and the BGP route is inactive, the OSPF route
takes precedence over BGP. The inactive BGP route is not shared even when the
target VRF has the filtering options enabled to match BGP.
Related
Commands
ip route-import – imports routes from another VRF.
ip route-import
Import IPv4 routes leaked by another VRF using the tag specified by that VRF during route-export
process.
C9000 Series
Syntax
ip route-import tag [route-map—name]
Parameters
route-import Enter the keyword route-import to import 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.
Virtual Routing and Forwarding (VRF)
2101