Dell C9000 series, Reference Manual

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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 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
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]
Virtual Routing and Forwarding (VRF) 2267