Router 1 : 
hostname Router1
enable secret cisco
enable password cisco
!
line vty 0 4
password cisco
login
line console 0
password cisco
login
exit
interface fastethernet0/0
ip address 172.16.2.33 255.255.255.254
clockrate 56000
no shutdown
no keepalive
interface serial0/0
ip address 172.16.1.2 255.255.255.252
clockrate 56000
ip ospf message-digest-key 1 md5 cisco
no shutdown
router ospf 50
area 0 authentication message-digest
network 172.16.2.32
network 172.16.1.0

Router 2: 
hostname Router2
enable secret cisco
enable password cisco
!
line vty 0 4
password cisco
login
line console 0
password cisco
login
exit
interface fastethernet0/0
ip address 172.30.1.1 255.255.255.0
no shutdown
no keepalive
interface serial0/0
ip address 172.16.1.1 255.255.255.252
ip ospf message-digest-key 1 md5 cisco
no keepalive
no shutdown
interface serial0/1
ip address 10.10.1.1 255.255.255.252
ip ospf message-digest-key 1 md5 cisco
clockrate 56000
no keepalive
no shutdown
router ospf 50
area 0 authentication message-digest
network 172.16.2.32
network 172.16.1.0
router eigrp 100
network 10.10.1.0
network 172.30.1.0
network 172.30.2.0


Router 3: 
hostname Router3
enable secret cisco
enable password cisco
!
line vty 0 4
password cisco
login
line console 0
password cisco
login
exit
ip route 0.0.0.0 10.10.1.2
interface fastethernet0/0
ip address 172.30.2.1 255.255.255.0
no keepalive
no shutdown
interface serial0/1
ip address 10.10.1.2 255.255.255.252
no shutdown
router eigrp 100
network 10.10.1.0
network 172.30.1.0
network 172.30.2.0