ubuntu-network网卡设置

浏览数：108 / 时间：2015年06月09日

最近ubuntu一直没办法访问某个固定的ip，192.168.8.200，根本就ping不上，但是其他的却可以，如192.168.209.然后同时帮忙解决了问题，具体如下

查看网卡信息

zhangshuli@zhangshuli-MS-7817:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 44:8a:5b:d3:5e:a5  
          inet addr:192.168.8.201  Bcast:192.168.11.255  Mask:255.255.252.0
          inet6 addr: fe80::468a:5bff:fed3:5ea5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:49135857 errors:0 dropped:0 overruns:0 frame:0
          TX packets:25695481 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:68012965722 (68.0 GB)  TX bytes:1788060772 (1.7 GB)
          Interrupt:44 Base address:0x6000 

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:53421 errors:0 dropped:0 overruns:0 frame:0
          TX packets:53421 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:33929751 (33.9 MB)  TX bytes:33929751 (33.9 MB)

vmnet1    Link encap:Ethernet  HWaddr 00:50:56:c0:00:01  
          inet addr:192.168.124.1  Bcast:192.168.124.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3212 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

vmnet8    Link encap:Ethernet  HWaddr 00:50:56:c0:00:08  
          inet addr:172.16.48.1  Bcast:172.16.48.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10086 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10242 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

zhangshuli@zhangshuli-MS-7817:~$

尝试能不能ping上ip

zhangshuli@zhangshuli-MS-7817:~$ ping 192.168.8.200

证明没办法连接

然后做如下修改

zhangshuli@zhangshuli-MS-7817:~$ sudo vim /etc/network/interfaces

添加内容如下

  1 auto lo
  2 iface lo inet loopback
  3 
  4 # The primary network interface
  5 auto eth0
  6 iface eth0 inet static
  7 address 192.168.8.201
  8 gateway 192.168.8.1
  9 netmask 255.255.252.0
 10 #network 192.168.0.0
 11 #broadcast 192.168.0.255

生效设定

zhangshuli@zhangshuli-MS-7817:~$ sudo /etc/init.d/networking restart
 * Reconfiguring network interfaces...                                                                                                                                                               SIOCSIFFLAGS: Cannot allocate memory
SIOCSIFFLAGS: Cannot allocate memory
Failed to bring up eth0.

下面补充些网卡设置的知识点

一、使用命令设置ubuntu的ip地址

1. 设置IP

sudo ifconfig eth0 203.171.239.155 netmask 255.255.255.224

这样就算设置好了网卡eth0的IP地址和子网掩码

2. 设置网关 sudo route add default gw 203.171.239.129

3. 设置DNS 修改/etc/resolv.conf，在其中加入 nameserver DNS的地址1 nameserver DNS的地址2 完成。

不过，这样设置之后，下次开机时候似乎IP又不存在了。

二、直接修改系统配置文件

ubuntu的网络配置文件是：/etc/network/interfaces

ubuntu命令行修改网络配置方法

/etc/network/interfaces