can ping gw but cann't ping other machines. Other machines can ping it: can ping 127.0.0.1, can ping 203.21.130.225! Check the configuration parameters to make correct one! [root@igloo /root]# less /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static BOARDCAST=203.21.130.231 (1110 0111) IPADDR=203.21.130.225 (1110 0001) NETMASK=255.255.255.248 (1111 1000) NETWORK=255.255.255.224 (1110 0000) GATEWAY=203.21.130.229 (1110 0101) ONBOOT=yes |