Gateway of WG4R1#show run
Building configuration...

Current configuration : 1401 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname WG4R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
no ip domain lookup
!
!
!
!
interface Loopback0
 ip address 197.4.1.1 255.255.255.0
!
interface Loopback1
 ip address 197.4.8.1 255.255.255.0
!
interface Ethernet0
 ip address 192.168.20.4 255.255.255.0
!
interface Serial0
 bandwidth 128
 no ip address
 encapsulation frame-relay
 frame-relay lmi-type cisco
!
interface Serial0.1 point-to-point
 bandwidth 128
 ip address 192.168.4.1 255.255.255.252
 ip ospf network point-to-point
 no cdp enable
 frame-relay interface-dlci 122
!
interface Serial1
 no ip address
 shutdown
!
interface Serial2
 no ip address
 shutdown
!
interface Serial3
 no ip address
 shutdown
!
interface BRI0
 no ip address
 shutdown
!
router ospf 4
 log-adjacency-changes
 network 192.168.4.0 0.0.0.3 area 0
 network 192.168.20.0 0.0.0.255 area 0
 network 197.4.1.0 0.0.0.255 area 0
 network 197.4.8.0 0.0.0.255 area 0
 default-information originate always
!
router bgp 4
 no synchronization
 bgp log-neighbor-changes
 network 192.168.4.0
 network 197.4.0.0 mask 255.255.0.0
 neighbor 192.168.20.20 remote-as 20
 auto-summary
!
ip http server
ip classless
ip route 197.4.0.0 255.255.0.0 Null0
!
!
!
line con 0
line aux 0
line vty 0 4
 password cisco
 login
!
end





**************************

WG4R3#show run int loopback0
Building configuration...

Current configuration : 63 bytes
!
interface Loopback0
 ip address 197.4.4.1 255.255.255.0
end

WG4R3#show run int loopback1
Building configuration...

Current configuration : 63 bytes
!
interface Loopback1
 ip address 197.4.5.1 255.255.255.0
end

WG4R3#show run | b router ospf
router ospf 4
 log-adjacency-changes
 network 192.168.4.4 0.0.0.3 area 0
 network 192.168.4.8 0.0.0.3 area 0
 network 197.4.4.0 0.0.0.255 area 0
 network 197.4.5.0 0.0.0.255 area 0
!
ip http server
ip classless
!
!
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 password cisco
 login
!
end

WG4R3#ping 197.4.2.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 197.4.2.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
WG4R3#show ip ospf neig

Neighbor ID     Pri   State           Dead Time   Address         Inter
197.4.7.1         0   FULL/  -        00:00:30    192.168.4.10    Seria
WG4R3#config t
Enter configuration commands, one per line.  End with CNTL/Z.
WG4R3(config)#int e0
WG4R3(config-if)#shut
WG4R3(config-if)#no shut
WG4R3(config-if)#exit
WG4R3(config)#
WG4R3(config)#
WG4R3(config)#exit
WG4R3#
*Mar  1 04:10:34.738: %SYS-5-CONFIG_I: Configured from console by conso
WG4R3#
WG4R3#
WG4R3#
WG4R3#show run
Building configuration...

Current configuration : 854 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname WG4R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
no ip domain lookup
!
!
!
!
interface Loopback0
 ip address 197.4.4.1 255.255.255.0
!
interface Loopback1
 ip address 197.4.5.1 255.255.255.0
!
interface Ethernet0
 ip address 192.168.4.6 255.255.255.252
!
interface Serial0
 ip address 192.168.4.9 255.255.255.252
 clockrate 64000
 no fair-queue
!
interface Serial1
 no ip address
 shutdown
!
router ospf 4
 log-adjacency-changes
 network 192.168.4.4 0.0.0.3 area 0
 network 192.168.4.8 0.0.0.3 area 0
 network 197.4.4.0 0.0.0.255 area 0
 network 197.4.5.0 0.0.0.255 area 0
!
ip http server
ip classless
!
!
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 password cisco
 login
!
end

WG4R3#ping 192.20.11.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.20.11.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
WG4R3#