筆者使用的是Vware虛擬機安裝的CentOS6.5
前提請確認網絡連接方式為：橋接
修改網卡eth0
vim /etc/sysconfig/network-scripts/ifcfg-eth0
++++++++++++++++++++++++++++++++
DEVICE="eth0"
BOOTPROTO="static" #將原來的值“dhcp”改為“static”
HWADDR="00:0C:29:F2:4E:96"
IPV6INIT="yes"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="b68b1ef8-13a0-4d11-a738-1ae704e6a0a4"
IPADDR=192.168.1.16 #你需要定義的IP地址
#以下兩個的值如果不清楚的話，可以打開你本地的電腦，--》控制面板\所有控制面板項\網絡和共享中心\本地連接\詳細信息
NETMASK=255.255.255.0 #子網掩碼
GATEWAY=192.168.1.1 #默認網關，
++++++++++++++++++++++++++++++++
保存退出
重啟網絡服務
service network restart
檢查一下狀態
ifconfig -a
+++++++++++++++++++++++++++++++++
eth0 Link encap:Ethernet HWaddr 00:0C:29:F2:4E:96
inet addr:192.168.1.16 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fef2:4e96/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17017 errors:0 dropped:0 overruns:0 frame:0
TX packets:9586 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7803412 (7.4 MiB) TX bytes:1613751 (1.5 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:21844 errors:0 dropped:0 overruns:0 frame:0
TX packets:21844 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2042507 (1.9 MiB) TX bytes:2042507 (1.9 MiB)
+++++++++++++++++++++++++++++++++
到了這里，請ping一下外網
ping baidu.com
我遇到兩個情況：
1）ping通了，oh yeah！
2）報錯：ping:unknow host baidu.com
好吧，我的解決方法是：
dhclient
敲了這個命令后，再ping一次
---------------------------------
PING baidu.com (180.149.132.47) 56(84) bytes of data.
64 bytes from 180.149.132.47: icmp_seq=1 ttl=54 time=38.3 ms
64 bytes from 180.149.132.47: icmp_seq=2 ttl=54 time=38.7 ms
64 bytes from 180.149.132.47: icmp_seq=3 ttl=54 time=49.7 ms
64 bytes from 180.149.132.47: icmp_seq=4 ttl=54 time=38.1 ms
64 bytes from 180.149.132.47: icmp_seq=5 ttl=54 time=37.9 ms
64 bytes from 180.149.132.47: icmp_seq=6 ttl=54 time=38.3 ms
---------------------------------
反正我是這樣解決的
還有人是這樣：配置靜態IP之后reboot
還有一個情況就是，ping 外網IP可以，但是無法ping域名。我的解決辦法是：設置DNS
vim /ect/resolv.conf
nameserver 114.114.114.114 //這個值我是在本地連接的狀態信息里找到的
保存之后退出，再ping！