Users 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. Use this identifier while importing these routes into
another nondefault 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 are duplicated into the VRF's RTM. 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 mode
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, use the ip route-export
tag command without specifying the route-map attribute. This action exposes source
VRF routes to 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.
Virtual Routing and Forwarding (VRF) 2044