PC0 cannot ping one of the other computers. Figure out which one, and change the IP address of that computer so it works. Bad IP 1024 1024 100 True 1 1 126 none net_switch0 100 112 450,216 net_switch False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 112 113 net_switch0 lo0 lo 113 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip management_interface management_interface0 112 114 net_switch0 management_interface0 management_interface 114 False management_interface0 192.168.2.6 255.255.255.0 0.0.0.0 ip port port1 112 115 net_switch0 port1 port 115 False port1 0.0.0.0 0.0.0.0 0.0.0.0 ip port port2 112 116 net_switch0 port2 port 116 False port2 0.0.0.0 0.0.0.0 0.0.0.0 ip port port3 112 117 net_switch0 port3 port 117 False port3 0.0.0.0 0.0.0.0 0.0.0.0 ip port port4 112 118 net_switch0 port4 port 118 False port4 0.0.0.0 0.0.0.0 0.0.0.0 ip port port5 112 119 net_switch0 port5 port 119 False port5 0.0.0.0 0.0.0.0 0.0.0.0 ip port port6 112 120 net_switch0 port6 port 120 False port6 0.0.0.0 0.0.0.0 0.0.0.0 ip port port7 112 121 net_switch0 port7 port 121 False port7 0.0.0.0 0.0.0.0 0.0.0.0 ip pc0 100 100 95,216 pc False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 100 101 pc0 lo0 lo 101 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip eth eth0 100 102 pc0 eth0 eth 102 False eth0 192.168.2.1 255.255.255.0 0.0.0.0 ip pc1 100 103 288,605 pc False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 103 104 pc1 lo0 lo 104 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip eth eth0 103 105 pc1 eth0 eth 105 False eth0 192.168.2.3 255.255.255.0 0.0.0.0 ip pc2 100 106 646,591 pc False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 106 107 pc2 lo0 lo 107 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip eth eth0 106 108 pc2 eth0 eth 108 False eth0 192.168.1.2 255.255.255.0 0.0.0.0 ip pc3 100 109 789,216 pc False False 0.0.0.0 0.0.0.0 0.0.0.0 gw lo lo0 109 110 pc3 lo0 lo 110 False lo0 127.0.0.1 255.0.0.0 0.0.0.0 ip eth eth0 109 111 pc3 eth0 eth 111 False eth0 192.168.2.4 255.255.255.0 0.0.0.0 ip 100 102 pc0 eth0 112 115 net_switch0 port1 normal 122 109 111 pc3 eth0 112 116 net_switch0 port2 normal 123 103 105 pc1 eth0 112 117 net_switch0 port3 normal 124 106 108 pc2 eth0 112 118 net_switch0 port4 normal 125 pc0 pc2 NeedsLocalIPTo IPAddress