______ROUTER 1________
R1#show running-config 
Building configuration...

Current configuration : 1123 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO2901/K9 sn FTX15244VL4-
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
 ip address 195.29.1.1 255.255.255.0
 ip ospf priority 200
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/0/0
 bandwidth 128
 ip address 195.29.12.1 255.255.255.252
 clock rate 2000000
!
interface Serial0/0/1
 bandwidth 1000
 ip address 195.29.13.1 255.255.255.252
 clock rate 2000000
!
interface Vlan1
 no ip address
 shutdown
!
router ospf 1
 log-adjacency-changes
!
router ospf 10
 router-id 1.1.1.1
 log-adjacency-changes
 passive-interface GigabitEthernet0/0
 auto-cost reference-bandwidth 1000
 network 195.29.1.0 0.0.0.255 area 0
 network 195.29.12.0 0.0.0.3 area 0
 network 195.29.13.0 0.0.0.3 area 0
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end


R1# show ip
R1# show ip r
R1# show ip rou
R1# show ip route 
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

     195.29.1.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.1.0/24 is directly connected, GigabitEthernet0/0
L       195.29.1.1/32 is directly connected, GigabitEthernet0/0
O    195.29.2.0/24 [110/748] via 195.29.13.2, 00:25:13, Serial0/0/1
O    195.29.3.0/24 [110/110] via 195.29.13.2, 00:25:30, Serial0/0/1
     195.29.12.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.12.0/30 is directly connected, Serial0/0/0
L       195.29.12.1/32 is directly connected, Serial0/0/0
     195.29.13.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.13.0/30 is directly connected, Serial0/0/1
L       195.29.13.1/32 is directly connected, Serial0/0/1
     195.29.23.0/30 is subnetted, 1 subnets
O       195.29.23.0/30 [110/747] via 195.29.13.2, 00:25:30, Serial0/0/1

R1#show ip os
R1#show ip ospf neig
R1#show ip ospf neighbor 


Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           0   FULL/  -        00:00:32    195.29.13.2     Serial0/0/1
2.2.2.2           0   FULL/  -        00:00:38    195.29.12.2     Serial0/0/0
R1#

_________________ROUTER 2________________________________________________

R2#show running-config 
Building configuration...

Current configuration : 1035 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO2901/K9 sn FTX152467CY-
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
 ip address 195.29.2.1 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/0/0
 bandwidth 128
 ip address 195.29.12.2 255.255.255.252
!
interface Serial0/0/1
 bandwidth 1000
 ip address 195.29.23.1 255.255.255.252
!
interface Vlan1
 no ip address
 shutdown
!
router ospf 10
 router-id 2.2.2.2
 log-adjacency-changes
 passive-interface GigabitEthernet0/0
 auto-cost reference-bandwidth 1000
 network 195.29.2.0 0.0.0.255 area 0
 network 195.29.12.0 0.0.0.3 area 0
 network 195.29.23.0 0.0.0.3 area 0
!
router rip
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end


R2#show ip
R2#show ip rou
R2#show ip route 
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

O    195.29.1.0/24 [110/748] via 195.29.23.2, 00:26:42, Serial0/0/1
     195.29.2.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.2.0/24 is directly connected, GigabitEthernet0/0
L       195.29.2.1/32 is directly connected, GigabitEthernet0/0
O    195.29.3.0/24 [110/110] via 195.29.23.2, 00:26:42, Serial0/0/1
     195.29.12.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.12.0/30 is directly connected, Serial0/0/0
L       195.29.12.2/32 is directly connected, Serial0/0/0
     195.29.13.0/30 is subnetted, 1 subnets
O       195.29.13.0/30 [110/747] via 195.29.23.2, 00:26:42, Serial0/0/1
     195.29.23.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.23.0/30 is directly connected, Serial0/0/1
L       195.29.23.1/32 is directly connected, Serial0/0/1

R2#show ip os
R2#show ip ospf neig
R2#show ip ospf neighbor 


Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           0   FULL/  -        00:00:39    195.29.23.2     Serial0/0/1
1.1.1.1           0   FULL/  -        00:00:35    195.29.12.1     Serial0/0/0
R2#

_____________________________ROUTER 3__________________________________________________

R3#show running-config 
Building configuration...

Current configuration : 1043 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R3
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO2901/K9 sn FTX15243K8I-
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
 ip address 195.29.3.1 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/0/0
 bandwidth 1000
 ip address 195.29.13.2 255.255.255.252
!
interface Serial0/0/1
 bandwidth 1000
 ip address 195.29.23.2 255.255.255.252
 clock rate 2000000
!
interface Vlan1
 no ip address
 shutdown
!
router ospf 10
 router-id 3.3.3.3
 log-adjacency-changes
 passive-interface GigabitEthernet0/0
 auto-cost reference-bandwidth 1000
 network 195.29.3.0 0.0.0.255 area 0
 network 195.29.13.0 0.0.0.3 area 0
 network 195.29.23.0 0.0.0.3 area 0
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end


R3#show ip ro
R3#show ip route 
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

O    195.29.1.0/24 [110/648] via 195.29.13.1, 00:27:50, Serial0/0/0
O    195.29.2.0/24 [110/648] via 195.29.23.1, 00:27:33, Serial0/0/1
     195.29.3.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.3.0/24 is directly connected, GigabitEthernet0/0
L       195.29.3.1/32 is directly connected, GigabitEthernet0/0
     195.29.12.0/30 is subnetted, 1 subnets
O       195.29.12.0/30 [110/1428] via 195.29.13.1, 00:27:33, Serial0/0/0
                       [110/1428] via 195.29.23.1, 00:27:33, Serial0/0/1
     195.29.13.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.13.0/30 is directly connected, Serial0/0/0
L       195.29.13.2/32 is directly connected, Serial0/0/0
     195.29.23.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.29.23.0/30 is directly connected, Serial0/0/1
L       195.29.23.2/32 is directly connected, Serial0/0/1

R3#show ip os
R3#show ip ospf ne
R3#show ip ospf neighbor 


Neighbor ID     Pri   State           Dead Time   Address         Interface
1.1.1.1           0   FULL/  -        00:00:30    195.29.13.1     Serial0/0/0
2.2.2.2           0   FULL/  -        00:00:35    195.29.23.1     Serial0/0/1
R3#