After CentOS6.3 is installed as a server, the NIC cannot be loaded or cannot be connected when it is started.

After CentOS6.3 is installed as a server, the NIC cannot be loaded or cannot be connected to the NIC at startup. 1. After CentOS 6.3 logs in as text, the ifconfig Command finds that only one local loopback Nic can be found, etho cannot be found, so you can use the www.2cto.com ifup eth0 command to activate the NIC, but you also need to configure the IP parameter, therefore, modify ifcfg-etho under/etc/sysconfig/network-scripts/to modify the file configuration as follows: # Nic DEVICE name: DEVICE = "eth0" # obtain the IP address in static mode BOOTPROTO = static connect to the network in bridging mode NM_CONTROLLED = "yes" #/load Nic configuration when the system starts, this option must be yes. Otherwise, the NIC is disconnected after the system is connected, use ifup eth0 to activate the nic onboot = "no" # Nic TYPE = "Ethernet" UUID = "nobody" # Nic IP address IPADDR = 192.168.0.248 # subnet mask PREFIX = 24 # default GATEWAY = 192.168.0.1 # DNS settings DNS1 = 219.146.0.130DNS2 = 219.150.32.132DEFROUTE = yesIPV4_FAILURE_FATAL = yesIPV6INIT = noNAME = "System eth0" HWADDR = 00: 0C: 29: 1B: 46: 8DLAST_CONNECT = 13532458692. restart the network service network restart.