16B#sh run 
Building configuration...

Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 16B
!
no logging console
enable secret 5 $1$3/T1$N2TmL0hzd5MzdtPexv2RX1
!
!
!
!
!
ip subnet-zero
!
!
!
!
interface Ethernet0
 ip address 172.20.1.1 255.255.255.252
 no ip directed-broadcast
!
interface Ethernet1
 ip address 10.1.1.3 255.255.255.0
 no ip directed-broadcast
!
router ospf 123
 redistribute static metric-type 1 subnets
 network 172.20.1.0 0.0.0.3 area 0
!
ip classless
ip route 188.188.188.0 255.255.255.0 10.1.1.1
no ip http server
!
!
line con 0
 transport input none
line vty 0 4
 password csl
 login
!
end
          
16B#sh ip ro 
Codes: C - connected, S - static, I - IGRP, 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 E2 199.199.199.0/24 [110/100] via 172.20.1.2, 00:07:32, Ethernet0
     172.20.0.0/30 is subnetted, 3 subnets
O       172.20.1.8 [110/75] via 172.20.1.2, 00:07:32, Ethernet0
C       172.20.1.0 is directly connected, Ethernet0
O       172.20.1.4 [110/74] via 172.20.1.2, 00:07:32, Ethernet0
     188.188.0.0/24 is subnetted, 1 subnets
S       188.188.188.0 [1/0] via 10.1.1.1
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, Ethernet1
     11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O       11.11.11.1/32 [110/76] via 172.20.1.2, 00:07:32, Ethernet0
O E2    11.11.12.0/24 [110/100] via 172.20.1.2, 00:07:32, Ethernet0
     192.168.1.0/30 is subnetted, 3 subnets
O       192.168.1.8 [110/75] via 172.20.1.2, 00:07:32, Ethernet0
O       192.168.1.0 [110/20] via 172.20.1.2, 00:07:32, Ethernet0
O       192.168.1.4 [110/74] via 172.20.1.2, 00:07:32, Ethernet0