Hi
Ospf have the ability to filter on ABR , the Type-3 summary-LSAs announced to other areas originated from intra- area paths from specified area
http://docs.frrouting.org/en/stable-8.1/ospfd.html#clicmd-area-0-4294967295-export-list-NAME
vyos-setting:
vyos@vyos:~$ show configuration commands | match "ospf|access" set policy access-list 100 rule 10 action 'permit' set policy access-list 100 rule 10 description 'test-acl' set policy access-list 100 rule 10 destination any set policy access-list 100 rule 10 source inverse-mask '0.0.255.255' set policy access-list 100 rule 10 source network '10.10.0.0' set policy access-list 100 rule 100 action 'deny' set policy access-list 100 rule 100 destination any set policy access-list 100 rule 100 source any set protocols ospf area 10.10.0.0 network '172.16.80.0/24' set protocols ospf area 10.10.0.0 network '30.30.30.30/32' set protocols ospf area 10.10.0.0 network '50.50.50.50/32' set protocols ospf area 10.10.0.0 network '10.0.0.0/8' set protocols ospf parameters abr-type 'cisco' set protocols ospf parameters router-id '50.50.50.50
frr command:
router ospf ospf router-id 50.50.50.50 auto-cost reference-bandwidth 100 timers throttle spf 200 1000 10000 network 10.0.0.0/8 area 10.10.0.0 network 30.30.30.30/32 area 10.10.0.0 network 50.50.50.50/32 area 10.10.0.0 network 172.16.80.0/24 area 10.10.0.0 area 10.10.0.0 export-list 100 exit