[FROG] OSPF, FreeBSD and aliases

[Eugene Grosbein]

18.07.2021 18:30, Chriztoffer Hansen wrote:

> On Sun, 18 Jul 2021 at 00:57, Eugene Grosbein <eugen at grosbein.net> wrote:
>> I hope this is right list to ask. Please correct me if not.
> 
> *FR*Routing *O*perators *G*roup (Users List), yep. The correct list.
> 
>> I'm trying to move from quagga to frr 7.5.1. I have existing working setup with OSPF
>> and FreeBSD servers that have some aliases on its OSPF-enabled interfaces.
>> In FreeBSD, if one needs several IP addresses in same IP subnet on one interfaces (for CARP etc.)
>> then one assigns one of IPs with "real" subnet mask and others with /32 mask:
> 
> Could you possibly also post the configuration you are using with OSPFv2/3?

Sure.

vtysh.conf:

service integrated-vtysh-config

frr.conf:

hostname col03
log syslog
! Renamed igb0
interface vm-public
  ip ospf cost 1
  ip ospf authentication message-digest
  ip ospf message-digest-key 1 md5 _XXXX_
!
router ospf
  router-id 192.168.49.3
  ospf abr-type shortcut
  log-adjacency-changes
  redistribute connected route-map MYNETS
  redistribute static route-map MYNETS
  network 192.168.49.0/24 area 49
  network 192.168.50.0/29 area 49
  network 192.168.50.8/29 area 50
  network 192.168.50.16/28 area 50
  network 192.168.50.32/27 area 50
  network 192.168.50.64/26 area 50
  network 192.168.50.128/25 area 50
  area 49 authentication message-digest
  area 49 filter-list prefix private out
  area 50 authentication message-digest
  area 50 filter-list prefix private out
!
ip prefix-list mynets seq 10 permit 192.168.49.0/24
ip prefix-list mynets seq 20 permit 192.168.50.0/24
!
ip prefix-list private seq 10 permit 10.0.0.0/8
ip prefix-list private seq 20 permit 10.0.0.0/8 ge 9
ip prefix-list private seq 30 permit 172.16.0.0/12
ip prefix-list private seq 40 permit 172.16.0.0/12 ge 13
ip prefix-list private seq 50 permit 192.168.0.0/16
ip prefix-list private seq 60 permit 192.168.0.0/16 ge 17
!
route-map MYNETS permit 10
 match ip address prefix-list mynets
! EOF