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ROUTER 3

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#int fa0/0

Router(config-if)#ip add 192.168.2.1 255.255.255.0

Router(config-if)#no shut

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

Router(config-if)#exit

Router(config)#int ser 2/0

Router(config-if)#ip add 192.168.1.2 255.255.255.0

Router(config-if)#no shut

%LINK-5-CHANGED: Interface Serial2/0, changed state to down

Router(config-if)#exit

Router(config)#ip route 172.16.0.0 255.255.252.0 ser 2/0

Router(config)#

ROUTER 2

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#int fa0/0

Router(config-if)#ip add 172.16.1.1 255.255.255.0

Router(config-if)#no shut

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

Router(config-if)#exit

Router(config)#int ser 2/0

Router(config-if)#ip add 172.16.2.2 255.255.255.0

Router(config-if)#description ke router R1

Router(config-if)#no shut

%LINK-5-CHANGED: Interface Serial2/0, changed state to down

Router(config-if)#exit

Router(config)#int ser 3/0

Router(config-if)#ip add 192.168.1.1 255.255.255.0

Router(config-if)#clock rate 9600

Router(config-if)#description ke router R3

Router(config-if)#no shut

%LINK-5-CHANGED: Interface Serial3/0, changed state to up

Router(config-if)#exit

Router(config)#

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/0, changed state to up

Router(config)#ip route 172.16.3.0 255.255.255.0 ser 2/0

Router(config)#ip route 192.168.2.0 255.255.255.0 ser 3/0

Router(config)#

ROUTER 1

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#int fa 0/0

Router(config-if)#ip add 172.16.3.1 255.255.255.0

Router(config-if)#no shut

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

Router(config-if)#exit

Router(config)#int ser2/0

Router(config-if)#ip add 172.16.2.1 255.255.255.0

Router(config-if)#clock rate 9600

Router(config-if)#no shut

%LINK-5-CHANGED: Interface Serial2/0, changed state to up

Router(config-if)#exit

Router(config)#

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up

Router(config)#ip route 0.0.0.0 0.0.0.0 ser2/0

Router(config)#exit

%SYS-5-CONFIG_I: Configured from console by console

Router#