Central#sh r 
Building configuration...

Current configuration : 1439 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
service password-encryption
!
hostname Central
!
!
!
enable password 7 0822404F1A0A
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
username Branch1 password 7 0822455D0A16
username Branch3 password 7 0822455D0A16
!
!
license udi pid CISCO1941/K9 sn FTX1524CM68
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
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interface Loopback0
 ip address 209.165.200.225 255.255.255.224
!
interface GigabitEthernet0/0
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/0/0
 ip address 10.1.1.2 255.255.255.252
 encapsulation ppp
 ppp authentication chap
!
interface Serial0/0/1
 ip address 10.2.2.2 255.255.255.252
 encapsulation ppp
 ppp authentication chap
 clock rate 128000
!
interface Vlan1
 no ip address
 shutdown
!
router ospf 1
 log-adjacency-changes
 network 10.1.1.0 0.0.0.3 area 0
 network 10.2.2.0 0.0.0.3 area 0
 default-information originate
!
ip classless
ip route 0.0.0.0 0.0.0.0 Loopback0 
!
ip flow-export version 9
!
!
!
banner motd ^C
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Unauthorized access is prohibited!
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^C
!
!
!
!
line con 0
 password 7 0822455D0A16
 logging synchronous
 login
!
line aux 0
!
line vty 0 4
 password 7 0822455D0A16
 login
!
!
!
end

Central#sh ip protocols 

Routing Protocol is "ospf 1"
  Outgoing update filter list for all interfaces is not set 
  Incoming update filter list for all interfaces is not set 
  Router ID 209.165.200.225
  It is an autonomous system boundary router
  Redistributing External Routes from,
  Number of areas in this router is 1. 1 normal 0 stub 0 nssa
  Maximum path: 4
  Routing for Networks:
    10.1.1.0 0.0.0.3 area 0
    10.2.2.0 0.0.0.3 area 0
  Routing Information Sources:  
    Gateway         Distance      Last Update 
    192.168.1.1          110      00:25:32
    192.168.3.1          110      00:24:23
    209.165.200.225      110      00:23:27
  Distance: (default is 110)

Central#sh ip ospf neighbor 


Neighbor ID     Pri   State           Dead Time   Address         Interface
192.168.3.1       0   FULL/  -        00:00:30    10.2.2.1        Serial0/0/1
192.168.1.1       0   FULL/  -        00:00:31    10.1.1.1        Serial0/0/0

Central#sh ip route ospf 
O    192.168.1.0 [110/65] via 10.1.1.1, 00:27:08, Serial0/0/0
O    192.168.3.0 [110/65] via 10.2.2.1, 00:25:58, Serial0/0/1

Central#sh ip ospf interface 

Serial0/0/0 is up, line protocol is up
  Internet address is 10.1.1.2/30, Area 0
  Process ID 1, Router ID 209.165.200.225, Network Type POINT-TO-POINT, Cost: 64
  Transmit Delay is 1 sec, State POINT-TO-POINT, Priority 0
  No designated router on this network
  No backup designated router on this network
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:02
  Index 1/1, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 1
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1 , Adjacent neighbor count is 1
    Adjacent with neighbor 192.168.1.1
  Suppress hello for 0 neighbor(s)
Serial0/0/1 is up, line protocol is up
  Internet address is 10.2.2.2/30, Area 0
  Process ID 1, Router ID 209.165.200.225, Network Type POINT-TO-POINT, Cost: 64
  Transmit Delay is 1 sec, State POINT-TO-POINT, Priority 0
  No designated router on this network
  No backup designated router on this network
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:06
  Index 2/2, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 1
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1 , Adjacent neighbor count is 1
    Adjacent with neighbor 192.168.3.1
  Suppress hello for 0 neighbor(s)