This is a real environment, not lab, although of course the IPs have been edited for public posting.
I'm happy with 1.1.3.226 being the DR and when all is configured I would have 1.1.3.227 as BDR, but for the moment the other peer (1.1.2.127) is fine.
Output from 1.1.3.226 below:
DX-CORE1-NEW#sh run int vl901
Building configuration...
Current configuration : 276 bytes
!
interface Vlan901
ip address 1.1.2.49 255.255.255.248
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 7 XXXXXXXXXXXXXXXXXXX
ip ospf network broadcast
ip ospf hello-interval 1
ip ospf 1 area 0
end
DX-CORE1-NEW#show ip ospf interface vlan 901
Vlan901 is up, line protocol is up
Internet Address 1.1.2.49/29, Area 0, Attached via Interface Enable
Process ID 1, Router ID 1.1.3.226, Network Type BROADCAST, Cost: 10
Topology-MTID Cost Disabled Shutdown Topology Name
0 10 no no Base
Enabled by interface config, including secondary ip addresses
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 1.1.3.226, Interface address 1.1.2.49
Backup Designated router (ID) 1.1.2.127, Interface address 1.1.2.51
Timer intervals configured, Hello 1, Dead 4, Wait 4, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:00
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Can be protected by per-prefix Loop-Free FastReroute
Can be used for per-prefix Loop-Free FastReroute repair paths
Index 5/5, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 40
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 2, Adjacent neighbor count is 2
Adjacent with neighbor 1.1.2.126
Adjacent with neighbor 1.1.2.127 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
Cryptographic authentication enabled
Youngest key id is 1
DX-CORE1-NEW#show ip ospf neighbor | i 901
1.1.2.126 1 FULL/DROTHER 00:00:03 1.1.2.52 Vlan901
1.1.2.127 1 FULL/BDR 00:00:03 1.1.2.51 Vlan901Output from 1.1.2.127 below:
EAST-CORE1#sh run int vl901
Building configuration...
Current configuration : 275 bytes
!
interface Vlan901
ip address 1.1.2.51 255.255.255.248
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 7 XXXXXXXXXXXXXXXXXXX
ip ospf network broadcast
ip ospf hello-interval 1
ip ospf 1 area 0
end
EAST-CORE1#show ip ospf interface vlan 901
Vlan901 is up, line protocol is up
Internet Address 1.1.2.51/29, Area 0, Attached via Interface Enable
Process ID 1, Router ID 1.1.2.127, Network Type BROADCAST, Cost: 10
Topology-MTID Cost Disabled Shutdown Topology Name
0 10 no no Base
Enabled by interface config, including secondary ip addresses
Transmit Delay is 1 sec, State BDR, Priority 1
Designated Router (ID) 1.1.3.226, Interface address 1.1.2.49
Backup Designated router (ID) 1.1.2.127, Interface address 1.1.2.51
Timer intervals configured, Hello 1, Dead 4, Wait 4, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:00
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Can be protected by per-prefix Loop-Free FastReroute
Can be used for per-prefix Loop-Free FastReroute repair paths
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 40
Last flood scan time is 0 msec, maximum is 792 msec
Neighbor Count is 2, Adjacent neighbor count is 1
Adjacent with neighbor 1.1.3.226 (Designated Router)
Suppress hello for 0 neighbor(s)
Cryptographic authentication enabled
Youngest key id is 1
EAST-CORE1#show ip ospf neighbor | i 901
1.1.2.126 1 FULL/DROTHER 00:00:03 1.1.2.52 Vlan901
1.1.3.226 1 FULL/DR 00:00:03 1.1.2.49 Vlan901
