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Parameters
route-export Enter the keyword to leak or share routes between VRFs.
tag Enter a tag (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
9.7(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 can be exposed 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. Meaning, 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.
1840
Virtual Routing and Forwarding (VRF)