Dell Z9500 Configuration Manual page 869

interface-type slot/port
ip vrf forwarding VRF-blue
ip address ip—address mask
A non-default VRF named VRF-blue is created and the interface 1/22 is assigned to it.
6 Define the route-map import_ospf_protocol.
Dell(config)route-map import_ospf_protocol permit 10
7 Define the matching criteria for importing routes into VRF-blue.
Dell(config-route-map)match source-protocol ospf
This action specifies that the route-map contains OSPF as the matching criteria for importing routes into vrf-blue.
8 Configure the import target in VRF-blue with route-map import_ospf_protociol.
ip route-import 1:1 import_ospf_protocol
When you import routes into VRF-blue using the route-map import_ospf_protocol, only OSPF routes are imported into
VRF-blue. Even though VRF-red has leaked both OSPF as well as BGP routes to be shared with other VRFs, this command
imports only OSPF routes into VRF-blue.
9 Configure the import target in the source VRF for reverse communnication with the destination VRF.
ip route-import 2:2
The show run output for the above configuration is as follows:
ip vrf vrf-Red
ip route-export
ip route-import
! this action exports only the OSPF and BGP routes to other VRFs
!
ip vrf vrf-Blue
ip route-export
ip route-import
!this action accepts only OSPF routes from VRF-red even though both OSPF as well as BGP routes
are shared
The show VRF commands displays the following output:
Dell# show ip route vrf VRF-Blue
C 122.2.2.0/24 Direct, Te 1/22
O 22.2.2.2/32
00:00:11
O 44.4.4.4/32
Important Points to Remember
• Only Active routes are eligible for leaking. For example, if VRF-A has two routes from BGP and OSPF, in which the BGP
route is not active. In this scenario, the OSPF route takes precedence over BGP. Even though the Target VRF-B has specified
filtering options to match BGP, the BGP route is not leaked as that route is not active in the Source VRF.
• The export-target and import-target support only the match protocol and match prefix-list options. Other options that are
configured in the route-maps are ignored.
• You can expose a unique set of routes from the Source VRF for Leaking to other VRFs. For example, in VRF-red there is no
option for exporting one set of routes (for example, OSPF) to VRF- blue and another set of routes (for example, BGP routes)
to some other VRF. Similarly, 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 VRF-red and another set of routes from VRF-blue.
1:1 export_ospfbgp_protocol
2:2
2:2
1:1 import_ospf_protocol
0/0
via 122.2.2.2 110/0
via vrf-red:144.4.4.4
<< only OSPF and BGP leaked from VRF-red
22:39:61
0/0 00:32:36
Virtual Routing and Forwarding (VRF) 869