<p> Basic Route Summarization IP Addressing and Configuration by Jim Johnston</p><p>Configurations ISP#sh run Building configuration...</p><p>Current configuration : 625 bytes ! version 12.2 no service password-encryption ! hostname ISP ! ! ! ! interface FastEthernet0/0 no ip address duplex auto speed auto shutdown ! interface FastEthernet1/0 no ip address duplex auto speed auto shutdown</p><p>Last update on 4/29/2018 1 ! interface Serial2/0 ip address 209.165.201.1 255.255.255.252 clock rate 64000 ! interface Serial3/0 no ip address shutdown ! interface FastEthernet4/0 no ip address shutdown ! interface FastEthernet5/0 no ip address shutdown ! interface Loopback0 ip address 4.0.0.1 255.255.255.255 ! ip classless ip route 172.16.64.0 255.255.248.0 Serial2/0 ! ! ! ! line con 0 line vty 0 4 login ! ! end</p><p>HQ#sh run Building configuration...</p><p>Current configuration : 716 bytes ! version 12.2 no service password-encryption ! hostname HQ ! ! ! !</p><p>Last update on 4/29/2018 2 interface FastEthernet0/0 ip address 172.16.64.1 255.255.254.0 duplex auto speed auto ! interface FastEthernet1/0 ip address 172.16.66.1 255.255.254.0 duplex auto speed auto ! interface Serial2/0 ip address 172.16.71.1 255.255.255.252 clock rate 56000 ! interface Serial3/0 ip address 172.16.71.5 255.255.255.252 clock rate 56000 ! interface Serial4/0 ip address 209.165.201.2 255.255.255.252 ! interface FastEthernet5/0 no ip address shutdown ! ip classless ip route 0.0.0.0 0.0.0.0 Serial4/0 ip route 172.16.70.0 255.255.255.0 Serial2/0 ip route 172.16.68.0 255.255.254.0 Serial3/0 ! ! ! ! line con 0 line vty 0 4 login ! ! end</p><p>WEST#sh run Building configuration...</p><p>Current configuration : 662 bytes ! version 12.2</p><p>Last update on 4/29/2018 3 no service password-encryption ! hostname WEST ! ! ! ! interface FastEthernet0/0 ip address 172.16.70.1 255.255.255.128 duplex auto speed auto ! interface FastEthernet1/0 ip address 172.16.70.129 255.255.255.128 duplex auto speed auto ! interface Serial2/0 ip address 172.16.71.2 255.255.255.252 ! interface Serial3/0 no ip address shutdown ! interface FastEthernet4/0 no ip address shutdown ! interface FastEthernet5/0 no ip address shutdown ! ip classless ip route 172.16.64.0 255.255.252.0 Serial2/0 ip route 0.0.0.0 0.0.0.0 Serial2/0 ip route 172.16.68.0 255.255.254.0 Serial2/0 ! ! ! ! line con 0 line vty 0 4 login ! ! end</p><p>Last update on 4/29/2018 4 EAST#sh run Building configuration...</p><p>Current configuration : 656 bytes ! version 12.2 no service password-encryption ! hostname EAST ! ! ! ! interface FastEthernet0/0 ip address 172.16.68.1 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 ip address 172.16.69.1 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown ! interface Serial3/0 ip address 172.16.71.6 255.255.255.252 ! interface FastEthernet4/0 no ip address shutdown ! interface FastEthernet5/0 no ip address shutdown ! ip classless ip route 172.16.64.0 255.255.252.0 Serial3/0 ip route 0.0.0.0 0.0.0.0 Serial3/0 ip route 172.16.70.0 255.255.255.0 Serial3/0 ! ! !</p><p>Last update on 4/29/2018 5 ! line con 0 line vty 0 4 login ! ! end</p><p>Last update on 4/29/2018 6</p>