5.7.1.txtISP-R1#show running-config Building configuration...

Current configuration : 1091 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname ISP-R1!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 209.165.200.225 255.255.255.252 duplex auto speed auto!interface FastEthernet0/1 no ip address duplex auto speed auto shutdown!interface Serial0/0/0 ip address 209.165.201.1 255.255.255.252 clock rate 64000!interface Serial0/0/1 ip address 209.165.201.5 255.255.255.252 clock rate 64000!interface Vlan1 no ip address shutdown!ip classlessip route 209.165.201.8 255.255.255.252 Serial0/0/1 ip route 209.165.200.228 255.255.255.252 Serial0/0/1 ip route 10.1.0.0 255.255.0.0 Serial0/0/0 ip route 172.20.0.0 255.255.0.0 Serial0/0/1 !!!banner motd ^C******************************** !!!AUTHORIZED ACCESS ONLY!!!********************************

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5.7.1.txt^C!!!!line con 0 password cisco login!line aux 0!line vty 0 4 password cisco login!!!end

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ISP-R2#show runBuilding configuration...

Current configuration : 1125 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname ISP-R2!!!enable secret 5 $1$GMyb$UNr8Qq.Ewy8h5Wtda8FTN/!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 209.165.200.229 255.255.255.252 duplex auto speed auto!interface FastEthernet0/1 no ip address duplex auto speed auto shutdown!interface Serial0/0/0

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5.7.1.txt description Link to R2 ip address 209.165.201.9 255.255.255.252 clock rate 64000!interface Serial0/0/1 description Link to ISP-R1 ip address 209.165.201.6 255.255.255.252!interface Vlan1 no ip address shutdown!ip classlessip route 209.165.201.0 255.255.255.252 Serial0/0/1 ip route 209.165.200.224 255.255.255.252 Serial0/0/1 ip route 10.1.0.0 255.255.0.0 Serial0/0/1 ip route 172.20.0.0 255.255.0.0 Serial0/0/0 !!!banner motd ^C******************************** !!!AUTHORIZED ACCESS ONLY!!!********************************^C!!!!line con 0 password cisco login!line aux 0!line vty 0 4 password cisco login!!!end

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R1#show runBuilding configuration...

Current configuration : 1084 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname R1!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1enable password cisco!!!!!!!

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5.7.1.txt!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 no ip address duplex auto speed auto shutdown!interface FastEthernet0/1 no ip address duplex auto speed auto shutdown!interface Serial0/0/0 ip address 10.1.244.1 255.255.252.0 clock rate 64000!interface Serial0/0/1 ip address 10.1.248.1 255.255.252.0 clock rate 64000!interface Serial0/1/0 ip address 10.1.252.1 255.255.252.0 clock rate 64000!interface Serial0/1/1 ip address 209.165.201.2 255.255.255.252!interface Vlan1 no ip address shutdown!router rip passive-interface Serial0/1/1 network 10.0.0.0 default-information originate!ip classlessip route 0.0.0.0 0.0.0.0 Serial0/1/1 !!!banner motd ^CWelcome to Router R1^C!!!!line con 0 password cisco login!line aux 0!line vty 0 4 password cisco login!!

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5.7.1.txt!end

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B1-R1#%SYS-5-CONFIG_I: Configured from console by consoleshow run Building configuration...

Current configuration : 1143 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname B1-R1!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 10.1.0.1 255.255.252.0 duplex auto speed auto!interface FastEthernet0/1 ip address 10.1.4.1 255.255.252.0 duplex auto speed auto!interface Serial0/0/0 ip address 10.1.244.2 255.255.252.0!interface Serial0/0/1 no ip address shutdown!interface FastEthernet1/0 ip address 10.1.8.1 255.255.252.0 duplex auto speed auto!interface FastEthernet1/1 ip address 10.1.12.1 255.255.252.0 duplex auto speed auto!

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5.7.1.txtinterface Vlan1 no ip address shutdown!router rip passive-interface FastEthernet0/0 passive-interface FastEthernet0/1 passive-interface FastEthernet1/0 passive-interface FastEthernet1/1 network 10.0.0.0!ip classless!!!no cdp run!banner motd ^CWelcome to Router B1-R1^C!!!!line con 0 password cisco login!line aux 0!line vty 0 password cisco loginline vty 1 4 login!!!end

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B2-R1#show runBuilding configuration...

Current configuration : 1146 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname B2-R1!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup

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5.7.1.txt!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 10.1.16.1 255.255.252.0 duplex auto speed auto!interface FastEthernet0/1 ip address 10.1.20.1 255.255.252.0 duplex auto speed auto!interface Serial0/0/0 ip address 10.1.248.2 255.255.252.0!interface Serial0/0/1 no ip address shutdown!interface FastEthernet1/0 ip address 10.1.24.1 255.255.252.0 duplex auto speed auto!interface FastEthernet1/1 ip address 10.1.28.1 255.255.252.0 duplex auto speed auto!interface Vlan1 no ip address shutdown!router rip passive-interface FastEthernet0/0 passive-interface FastEthernet0/1 passive-interface FastEthernet1/0 passive-interface FastEthernet1/1 network 10.0.0.0!ip classless!!!no cdp run!banner motd ^CWelcome to Router B2-R1^C!!!!line con 0 password cisco login!line aux 0!line vty 0 password cisco loginline vty 1 4 login!

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5.7.1.txt!!end

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B3-R1#show runBuilding configuration...

Current configuration : 1146 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname B3-R1!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 10.1.32.1 255.255.252.0 duplex auto speed auto!interface FastEthernet0/1 ip address 10.1.36.1 255.255.252.0 duplex auto speed auto!interface Serial0/0/0 ip address 10.1.252.2 255.255.252.0!interface Serial0/0/1 no ip address shutdown!interface FastEthernet1/0 ip address 10.1.40.1 255.255.252.0 duplex auto speed auto!interface FastEthernet1/1 ip address 10.1.44.1 255.255.252.0 duplex auto speed auto!

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5.7.1.txtinterface Vlan1 no ip address shutdown!router rip passive-interface FastEthernet0/0 passive-interface FastEthernet0/1 passive-interface FastEthernet1/0 passive-interface FastEthernet1/1 network 10.0.0.0!ip classless!!!no cdp run!banner motd ^CWelcome to Router B3-R1^C!!!!line con 0 password cisco login!line aux 0!line vty 0 password cisco loginline vty 1 4 login!!!end

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R2#show runBuilding configuration...

Current configuration : 1071 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname R2!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup

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5.7.1.txt!!spanning-tree mode pvst!!!!interface FastEthernet0/0 no ip address duplex auto speed auto shutdown!interface FastEthernet0/1 no ip address duplex auto speed auto shutdown!interface Serial0/0/0 ip address 172.20.250.1 255.255.254.0 clock rate 64000!interface Serial0/0/1 ip address 172.20.252.1 255.255.254.0 clock rate 64000!interface Serial0/1/0 ip address 172.20.254.1 255.255.254.0 clock rate 64000!interface Serial0/1/1 ip address 209.165.201.10 255.255.255.252!interface Vlan1 no ip address shutdown!router rip passive-interface Serial0/1/1 network 172.20.0.0 default-information originate!ip classlessip route 0.0.0.0 0.0.0.0 Serial0/1/1 !!!banner motd ^CWelcome to Router R2^C!!!!line con 0 password cisco login!line aux 0!line vty 0 4 password cisco login!!!end

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5.7.1.txt

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B1-R2#show runBuilding configuration...

Current configuration : 1154 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname B1-R2!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 172.20.0.1 255.255.254.0 duplex auto speed auto!interface FastEthernet0/1 ip address 172.20.2.1 255.255.254.0 duplex auto speed auto!interface Serial0/0/0 ip address 172.20.250.2 255.255.254.0!interface Serial0/0/1 no ip address shutdown!interface FastEthernet1/0 ip address 172.20.4.1 255.255.254.0 duplex auto speed auto!interface FastEthernet1/1 ip address 172.20.6.1 255.255.254.0 duplex auto speed auto!interface Vlan1 no ip address shutdown!

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5.7.1.txtrouter rip passive-interface FastEthernet0/0 passive-interface FastEthernet0/1 passive-interface FastEthernet1/0 passive-interface FastEthernet1/1 network 172.20.0.0!ip classless!!!no cdp run!banner motd ^CWelcome to Router B1-R2^C!!!!line con 0 password cisco login!line aux 0!line vty 0 password cisco loginline vty 1 4 login!!!end

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B2-R2#show runBuilding configuration...

Current configuration : 1157 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname B2-R2!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!

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5.7.1.txt!!!interface FastEthernet0/0 ip address 172.20.8.1 255.255.254.0 duplex auto speed auto!interface FastEthernet0/1 ip address 172.20.10.1 255.255.254.0 duplex auto speed auto!interface Serial0/0/0 ip address 172.20.252.2 255.255.254.0!interface Serial0/0/1 no ip address shutdown!interface FastEthernet1/0 ip address 172.20.12.1 255.255.254.0 duplex auto speed auto!interface FastEthernet1/1 ip address 172.20.14.1 255.255.254.0 duplex auto speed auto!interface Vlan1 no ip address shutdown!router rip passive-interface FastEthernet0/0 passive-interface FastEthernet0/1 passive-interface FastEthernet1/0 passive-interface FastEthernet1/1 network 172.20.0.0!ip classless!!!no cdp run!banner motd ^CWelcome to Router B2-R2^C!!!!line con 0 password cisco login!line aux 0!line vty 0 password cisco loginline vty 1 4 login!!!end

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5.7.1.txt

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B3-R2#show runBuilding configuration...

Current configuration : 1158 bytes!version 12.3no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption!hostname B3-R2!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!!!!no ip domain-lookup!!spanning-tree mode pvst!!!!interface FastEthernet0/0 ip address 172.20.16.1 255.255.254.0 duplex auto speed auto!interface FastEthernet0/1 ip address 172.20.18.1 255.255.254.0 duplex auto speed auto!interface Serial0/0/0 ip address 172.20.254.2 255.255.254.0!interface Serial0/0/1 no ip address shutdown!interface FastEthernet1/0 ip address 172.20.20.1 255.255.254.0 duplex auto speed auto!interface FastEthernet1/1 ip address 172.20.22.1 255.255.254.0 duplex auto speed auto!interface Vlan1 no ip address shutdown

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5.7.1.txt!router rip passive-interface FastEthernet0/0 passive-interface FastEthernet0/1 passive-interface FastEthernet1/0 passive-interface FastEthernet1/1 network 172.20.0.0!ip classless!!!no cdp run!banner motd ^CWelcome to Router B3-R2^C!!!!line con 0 password cisco login!line aux 0!line vty 0 password cisco loginline vty 1 4 login!!!end

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