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Dell EMC SmartFabric OS10 User Guide Release 10.5.1

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Route leaking using route maps

You can leak routes in one VRF instance to another VRF instance using route maps.

To leak routes in one VRF instance using route maps:

  1. Enter the VRF from which you want to leak routes using route targets.
    CONFIGURATION
    ip vrf source-vrf-name
    ip vrf VRF-A
  2. Configure the IP prefix.
    CONFIGURATION
    ip prefix-list prefix-list-name {permit | deny} ip-address
    ip prefix-list abc permit 20.0.0.0/24
or
ip prefix-list abc deny 20.0.0.0/24
  3. Configure the route-map.
    CONFIGURATION
    route-map route-map-name
    route-map xyz
  4. Associate the prefix list to the route-map.
    CONFIGURATION
    route-map route-map-name {permit | deny} rule
    match ip address prefix-list prefix-list-name
    route-map xyz permit 10
match ip address prefix-list abc
or
route-map xyz deny 10
match ip address prefix-list abc
  5. Export the routes from a VRF instance using route maps.
    VRF CONFIGURATION
    ip route-export route-target route-map-name route-map-name
    ip route-export 1:1 route-map xyz
  6. Enter the destination VRf instance into which you want to leak the routes using route maps.
    CONFIGURATION
    ip vrf destination-vrf-name
    ip vrf VRF-B
  7. Import these leaked routes into another VRF instance.
    VRF CONFIGURATION
    ip route-import route-target
    ip route-import 1:1

Example Configuration for IPv4 static route leaking

OS10(config)#interface ethernet 1/1/1 
OS10(conf-if-eth1/1/1)# ip vrf forwarding VRF1 
OS10(conf-if-eth1/1/1)# ip address 120.0.0.1/24

OS10(config)#interface ethernet 1/1/2 
OS10(conf-if-eth1/1/2)# ip vrf forwarding VRF2 
OS10(conf-if-eth1/1/2)# ip address 140.0.0.1/24 
OS10(config)#ip route vrf VRF1 160.0.0.0/24 120.0.0.2
OS10(config)# ip vrf VRF1
OS10(conf-vrf)# ip route-export 1:1
OS10(config)# ip vrf VRF2
OS10(conf-vrf)# ip route-import 1:1

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