Router1（Cisco路由器）的配置：
ip subnet-zero
interface Ethernet0
ip address 16.112.44.98 255.255.255.0
no ip route-cache
no ip mroute-cache
media-type 10BaseT
interface Serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
interface Serial0.1
ip address 16.112.224.62 255.255.255.192
ip ospf network point-to-multipoint
frame-relay map ip 16.112.224.1 50 broadcast
interface Serial1
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
interface Serial1.1
ip address 16.112.224.126 255.255.255.192
ip ospf network point-to-multipoint
frame-relay map ip 16.112.224.65 51 broadcast
router ospf 1
network 16.112.0.0 0.0.255.255 area 0
ip classless
ip route 16.112.45.0 255.255.255.240 16.112.44.99 120
Router2（Cisco路由器）的配置：
hostname user
ip subnet-zero
interface Ethernet0
ip address 16.112.44.99 255.255.255.0
media-type 10BaseT
interface Serial0
dialer rotary-group 1
interface Serial7
dialer rotary-group 1
interface Dialer1
ip address 16.112.225.62 255.255.255.252
encapsulation ppp
dialer in-band
dialer wait-for-carrier-time 60
dialer map ip 16.112.225.1 name user1 2000001
dialer-group 1
ppp authentication chap
router ospf 1
network 16.112.0.0 0.0.255.255 area 0
redistribute static subnets
ip classless
ip route 16.112.45.0 255.255.255.240 16.112.225.1 120
access-list 101 deny ospf any any
access-list 101 permit ip any any
dialer-list 1 list 101
username user1 password password1
Router3（Cisco路由器）的配置：
hostname user1
ip subnet-zero
interface Ethernet0
ip address 16.112.45.14 255.255.255.240
interface Serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
interface Serial0.1
ip address 16.112.224.1 255.255.255.192
ip ospf network point-to-multipoint
frame-relay map ip 16.112.224.62 50 broadcast
interface Serial0.2
ip address 16.112.224.65 255.255.255.192
ip ospf network point-to-multipoint
frame-relay map ip 16.112.224.126 51 broadcast
interface Serial1
ip address 16.112.225.1 255.255.255.192
encapsulation ppp
dialer in-band
dialer wait-for-carrier-time 60
dialer string 2000000
dialer-group 1
pulse-time 1
ppp authentication chap
router ospf 1
network 16.112.0.0 0.0.255.255 area 0
ip classless
ip route 16.112.44.0 255.255.255.0 16.112.225.62 120
access-list 101 deny ospf any any
access-list 101 permit ip any any
dialer-list 1 list 101
username user password password
Router3（博达路由器）的配置：
nodename user1
ospf enable
e0
ip add 16.112.45.14 255.255.255.240
quit
s0
encapsulate framerelay
ip add 16.112.224.1 255.255.255.192
ip add 16.112.224.65 255.255.255.192
map add 16.112.224.62 pvc 50 broadcast
map add 16.112.224.126 pvc 51 broadcast
fr lmi_type ansi
ospf network point-to-multipoint
quit
s1
encapsulate ppp
line dial
port sync
ip add 16.112.225.1 255.255.255.192
map add 16.112.225.62 2000000
ppp auth chap
ppp chap user user
quit
route add 16.112.44.0 255.255.255.0 16.112.225.1 120
user add user password password
ospf network add 16.112.0.0 0
摘自《计算机世界》
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