frr version 8.1
frr defaults traditional
hostname F
no ipv6 forwarding
!
interface eth1
 description B-eth3
 ip address 10.10.10.14/30
 ip ospf cost 10
exit
!
interface eth2
 description D-eth3
 ip address 10.10.10.26/30
 ip ospf cost 1
exit
!
interface eth3
 description Gandalf-eth3
 ip address 203.0.113.1/30
exit
!
interface eth4
 description R1-eth4
 ip address 203.0.113.5/30
exit
!
interface lo
 ip address 10.10.0.5/32
 ip ospf passive
exit
!
router bgp 65501
 bgp router-id 10.10.0.5
 no bgp ebgp-requires-policy
 neighbor 10.10.0.6 remote-as 65501
 neighbor 10.10.0.6 update-source lo
 neighbor 203.0.113.2 remote-as 65502
 neighbor 203.0.113.2 update-source eth3
 neighbor 203.0.113.6 remote-as 65503
 neighbor 203.0.113.6 update-source eth4
 !
 address-family ipv4 unicast
  redistribute ospf metric 10 route-map BGP4-OSPF
  neighbor 10.10.0.6 next-hop-self
  neighbor 203.0.113.2 route-map PREFER-ROUTE in
  neighbor 203.0.113.6 route-map PREFER-ROUTE2 in
 exit-address-family
exit
!
router ospf
 ospf router-id 10.10.0.5
 redistribute bgp metric 20 metric-type 1 route-map BGP4-OSPF
 network 10.10.0.5/32 area 0
 network 10.10.10.0/27 area 0
exit
!
ip prefix-list ALLOWED_ROUTES seq 10 permit 10.0.0.0/24 ge 32
ip prefix-list ALLOWED_ROUTES seq 20 permit 192.168.0.0/16 ge 24
ip prefix-list ALLOWED_ROUTES seq 30 deny 0.0.0.0/0 le 32
ip prefix-list PREFER-ROUTE seq 5 permit 192.168.2.0/24
ip prefix-list PREFER-ROUTE seq 10 deny any
ip prefix-list PREFER-ROUTE2 seq 5 permit 192.168.3.0/24
ip prefix-list PREFER-ROUTE2 seq 10 deny any
!
route-map BGP4-OSPF permit 10
 match ip address prefix-list ALLOWED_ROUTES
exit
!
route-map PREFER-ROUTE permit 10
 match ip address prefix-list PREFER-ROUTE
 set local-preference 200
 set weight 32768
exit
!
route-map PREFER-ROUTE2 permit 10
 match ip address prefix-list PREFER-ROUTE2
 set local-preference 200
 set weight 32768
exit
!