Managed Switches can use Spanning Tree, which intelligently figures out the least distance path to a point. It is made so you can have network loops and survive. Try pinging pc1 twice from pc0. The first time, some packets are lost. But the second time the packet goes where it should. 1024 1024 100 False 0 3.5 214 full net_switch0 100 100 210,410 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 100 101 net_switch0 lo0 lo 101 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 100 102 net_switch0 management_interface0 management_interface 102 False management_interface0 0.0.0.0 0.0.0.0 0.0.0.0 ip port port1 100 103 net_switch0 port1 port 103 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 100 104 net_switch0 port2 port 104 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 100 105 net_switch0 port3 port 105 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 100 106 net_switch0 port4 port 106 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 100 107 net_switch0 port5 port 107 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 100 108 net_switch0 port6 port 108 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 100 109 net_switch0 port7 port 109 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip net_switch1 100 110 360,280 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 110 111 net_switch1 lo0 lo 111 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 110 112 net_switch1 management_interface0 management_interface 112 False management_interface0 0.0.0.0 0.0.0.0 0.0.0.0 ip port port1 110 113 net_switch1 port1 port 113 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 110 114 net_switch1 port2 port 114 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 110 115 net_switch1 port3 port 115 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 110 116 net_switch1 port4 port 116 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 110 117 net_switch1 port5 port 117 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 110 118 net_switch1 port6 port 118 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 110 119 net_switch1 port7 port 119 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip net_switch2 100 120 350,480 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 120 121 net_switch2 lo0 lo 121 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 120 122 net_switch2 management_interface0 management_interface 122 False management_interface0 0.0.0.0 0.0.0.0 0.0.0.0 ip port port1 120 123 net_switch2 port1 port 123 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 120 124 net_switch2 port2 port 124 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 120 125 net_switch2 port3 port 125 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 120 126 net_switch2 port4 port 126 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 120 127 net_switch2 port5 port 127 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 120 128 net_switch2 port6 port 128 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 120 129 net_switch2 port7 port 129 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip net_switch6 100 160 620,480 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 160 161 net_switch6 lo0 lo 161 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 160 162 net_switch6 management_interface0 management_interface 162 False management_interface0 0.0.0.0 0.0.0.0 0.0.0.0 ip port port1 160 163 net_switch6 port1 port 163 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 160 164 net_switch6 port2 port 164 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 160 165 net_switch6 port3 port 165 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 160 166 net_switch6 port4 port 166 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 160 167 net_switch6 port5 port 167 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 160 168 net_switch6 port6 port 168 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 160 169 net_switch6 port7 port 169 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip net_switch7 100 170 620,280 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 170 171 net_switch7 lo0 lo 171 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 170 172 net_switch7 management_interface0 management_interface 172 False management_interface0 0.0.0.0 0.0.0.0 0.0.0.0 ip port port1 170 173 net_switch7 port1 port 173 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 170 174 net_switch7 port2 port 174 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 170 175 net_switch7 port3 port 175 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 170 176 net_switch7 port4 port 176 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 170 177 net_switch7 port5 port 177 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 170 178 net_switch7 port6 port 178 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 170 179 net_switch7 port7 port 179 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip net_switch8 100 180 750,370 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 180 181 net_switch8 lo0 lo 181 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 180 182 net_switch8 management_interface0 management_interface 182 False management_interface0 0.0.0.0 0.0.0.0 0.0.0.0 ip port port1 180 183 net_switch8 port1 port 183 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 180 184 net_switch8 port2 port 184 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 180 185 net_switch8 port3 port 185 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 180 186 net_switch8 port4 port 186 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 180 187 net_switch8 port5 port 187 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 180 188 net_switch8 port6 port 188 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 180 189 net_switch8 port7 port 189 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip pc0 100 190 880,380 pc False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 190 191 pc0 lo0 lo 191 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip eth eth0 190 192 pc0 eth0 eth 192 False eth0 192.168.1.2 255.255.255.0 0.0.0.0 ip pc1 100 193 50,420 pc False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 193 194 pc1 lo0 lo 194 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip eth eth0 193 195 pc1 eth0 eth 195 False eth0 192.168.1.1 255.255.255.0 0.0.0.0 ip 193 195 pc1 eth0 100 103 net_switch0 port1 196 100 105 net_switch0 port3 120 123 net_switch2 port1 198 100 104 net_switch0 port2 110 113 net_switch1 port1 197 170 175 net_switch7 port3 180 183 net_switch8 port1 207 160 165 net_switch6 port3 180 184 net_switch8 port2 208 180 185 net_switch8 port3 190 192 pc0 eth0 209 110 114 net_switch1 port2 160 163 net_switch6 port1 210 120 124 net_switch2 port2 170 173 net_switch7 port1 211 110 115 net_switch1 port3 170 174 net_switch7 port2 212 120 125 net_switch2 port3 160 164 net_switch6 port2 213 pc0 pc1 SuccessfullyPings pc0 pc1 SuccessfullyPingsAgain Ping