Users Guide

Command History
This guide is platform-specific. For command information about other platforms, see
the relevant Dell Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
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 S4810, S4820T, S5000, S6000, S6000–ON,
and Z9500.
Usage Information To export all the routes corresponding to a source VRF, you can use the ip route-
export tag command without specifying the route-map attribute. 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 one route-export per VRF as you can only
expose one set of routes for leaking. However, you can configure multiple route-
import targets because a VRF can accept 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. For example, 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
• ip route-import — imports routes from another VRF.
ip route-import
Imports IPv4 routes that another VRF leaks using the VRF tag during the export of these routes.
Syntax
ip route-import tag [route-map—name]
Parameters
route-import Enter the keywords 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.
Virtual Routing and Forwarding (VRF) 2042