OSPF unnumbered with ECMP
General information can be found in the OSPF chapter.
Configuration
Router A:
set interfaces ethernet eth0 address '10.0.0.1/24'
set interfaces ethernet eth1 address '192.168.0.1/32'
set interfaces ethernet eth1 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
set interfaces ethernet eth1 ip ospf network 'point-to-point'
set interfaces ethernet eth2 address '192.168.0.1/32'
set interfaces ethernet eth2 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
set interfaces ethernet eth2 ip ospf network 'point-to-point'
set interfaces loopback lo address '192.168.0.1/32'
set protocols ospf area 0.0.0.0 authentication 'md5'
set protocols ospf area 0.0.0.0 network '192.168.0.1/32'
set protocols ospf parameters router-id '192.168.0.1'
set protocols ospf redistribute connected
Router B:
set interfaces ethernet eth0 address '10.0.0.2/24'
set interfaces ethernet eth1 address '192.168.0.2/32'
set interfaces ethernet eth1 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
set interfaces ethernet eth1 ip ospf network 'point-to-point'
set interfaces ethernet eth2 address '192.168.0.2/32'
set interfaces ethernet eth2 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
set interfaces ethernet eth2 ip ospf network 'point-to-point'
set interfaces loopback lo address '192.168.0.2/32'
set protocols ospf area 0.0.0.0 authentication 'md5'
set protocols ospf area 0.0.0.0 network '192.168.0.2/32'
set protocols ospf parameters router-id '192.168.0.2'
set protocols ospf redistribute connected
Results
Router A:
vyos@vyos:~$ show interfaces
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface IP Address S/L Description
--------- ---------- --- -----------
eth0 10.0.0.1/24 u/u
eth1 192.168.0.1/32 u/u
eth2 192.168.0.1/32 u/u
lo 127.0.0.1/8 u/u
192.168.0.1/32
::1/128
vyos@vyos:~$ show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
F - PBR, f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
S>* 0.0.0.0/0 [210/0] via 10.0.0.254, eth0, 00:57:34
O 10.0.0.0/24 [110/20] via 192.168.0.2, eth1 onlink, 00:13:21
via 192.168.0.2, eth2 onlink, 00:13:21
C>* 10.0.0.0/24 is directly connected, eth0, 00:57:35
O 192.168.0.1/32 [110/0] is directly connected, lo, 00:48:53
C * 192.168.0.1/32 is directly connected, eth2, 00:56:31
C * 192.168.0.1/32 is directly connected, eth1, 00:56:31
C>* 192.168.0.1/32 is directly connected, lo, 00:57:36
O>* 192.168.0.2/32 [110/1] via 192.168.0.2, eth1 onlink, 00:29:03
* via 192.168.0.2, eth2 onlink, 00:29:03
Router B:
vyos@vyos:~$ show interfaces
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface IP Address S/L Description
--------- ---------- --- -----------
eth0 10.0.0.2/24 u/u
eth1 192.168.0.2/32 u/u
eth2 192.168.0.2/32 u/u
lo 127.0.0.1/8 u/u
192.168.0.2/32
::1/128
vyos@vyos:~$ show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
F - PBR, f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
S>* 0.0.0.0/0 [210/0] via 10.0.0.254, eth0, 00:57:34
O 10.0.0.0/24 [110/20] via 192.168.0.1, eth1 onlink, 00:13:21
via 192.168.0.1, eth2 onlink, 00:13:21
C>* 10.0.0.0/24 is directly connected, eth0, 00:57:35
O 192.168.0.2/32 [110/0] is directly connected, lo, 00:48:53
C * 192.168.0.2/32 is directly connected, eth2, 00:56:31
C * 192.168.0.2/32 is directly connected, eth1, 00:56:31
C>* 192.168.0.2/32 is directly connected, lo, 00:57:36
O>* 192.168.0.1/32 [110/1] via 192.168.0.1, eth1 onlink, 00:29:03
* via 192.168.0.1, eth2 onlink, 00:29:03