R1(config)# interface ge0/0
R1(config-if)# description "Interface connecte a Internet"
R1(config-if)# ip address 209.205.53.12 255.0.0.0
R1(config-if)# no shutdown
R1(config-if)# exit
R1(config)# interface ge0/1
R1(config-if)# description "Interface Reseau Client"
R1(config-if)# ip address 192.168.1.254 255.255.255.0
R1(config-if)# no shutdown
R1(config-if)# exit
