VXLAN EVPN External Routing with OSPF

[paul1202]

Hi,

I have a VXLAN EVPN Fabric and have successfully peered with an external BGP router and exchanged routes.

I now wish to peer directly with a pair of OSPF routers and redistribute specifc prefixes to them. There are about 20 discontiguous prefixes I wish to advertise out from the Fabric.

I'm not sure if I can use a combination of a route-map with a prefix-list, together with the "match route-type internal" command or if there is a better way to do it.

Please can someone share an example of how this can be done.

Thanks

[David Ruess]

Hello,

This link has helped me with discontiguous subnets before. It uses AND/OR logic.

Using Discontiguous Wildcard Masks in ACLs - Router Jockey

-David

[paul1202]

Thanks David, but what I really need to know is if the following configuration would work when peering externally from the VXLAN Fabric using OSPF.

router ospf 100
vrf prod
redistribute bgp 65501 route-map BGP-TO-OSPF

route-map BGP-TO-OSPF permit 10
match ip address prefix-list DATA-CENTRE-MAN

ip prefix-list DATA-CENTRE-MAN seq 5 permit 10.202.248.64/27
ip prefix-list DATA-CENTRE-MAN seq 10 permit 10.202.252.64/27
ip prefix-list DATA-CENTRE-MAN seq 15 permit 10.202.252.128/26

[hhon]

Hi Paul, can you share your configuration of how you redistribute external routes including the default route into your VXLAN EVPN Fabric. I ran into an issue on this. Appreciate for sharing.