linux下网络基本配置

Bertha 。 2024-02-17 22:31 69阅读 0赞

[ ][Link 1]

本文摘自： [http://blog.csdn.net/sky7034/article/details/6624769][Link 1]

常用参数

格式：ifconfig

显示当前激活的网络接口信息。  
If no arguments are given, ifconfig displays the status of the currently active interfaces.

格式：ifconfig \{INTERFACE\}

显示指定网络接口的信息。比如：eth0, eth1。

If a single interface argument is given, it displays the status of the given interface only;

格式：ifconfig -a

显示所有网络接口的信息，无论是否激活。

if a single -a argument is given, it displays the status of all interfaces, even those that are down.

Display info on all network interfaces on server, active or inactive.

其他格式，用来配置网络接口。

Otherwise, it configures an interface.

格式：ifconfig \{INTERFACE\} up

格式：ifup \{INTERFACE\}

激活指定网络接口。比如：eth0, eth1。

This flag causes the interface to be activated. It is implicitly specified if an address is assigned to the interface.

格式：ifconfig \{INTERFACE\} down

格式：ifdown \{INTERFACE\}

关闭指定网络接口。

This flag causes the driver for this interface to be shut down.

格式：ifconfig \{INTERFACE\} \{IP\}

格式：ifconfig \{INTERFACE\} \{IP\} netmask \{NETMASK\}

为指定网络接口设置IP地址和掩码，并自动激活。比如：eth0, eth0:0, eth0:1，后两个为虚拟网卡。

格式：ifconfig \{INTERFACE\} add \{IP\}

格式：ifconfig \{INTERFACE\}:0 \{IP\}

为指定网络接口添加IP地址。

格式：ifconfig \{INTERFACE\} del \{IP\}

为指定网络接口删除IP地址。

### 使用示例 ###

#### 示例一 通过ifconfig命令查看当前网络接口及状态 ####

ifconfig不带参数，只打印处于激活状态的网络接口。

\[root@jfht ~\]\# ifconfig  
eth0 Link encap:Ethernet HWaddr 00:1B:78:40:8C:20  
inet addr:211.103.28.xx Bcast:211.103.28.31 Mask:255.255.255.224  
inet6 addr: fe80::21b:78ff:fe40:8c20/64 Scope:Link  
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1  
RX packets:134856806 errors:0 dropped:0 overruns:0 frame:0  
TX packets:140723373 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:1680519599 (1.5 GiB) TX bytes:2804853589 (2.6 GiB)  
Interrupt:114 Memory:fa000000-fa012800

现在解释一下输出信息的含义：

eth0：网络接口  
link encap:网络类型  
HWaddr:网卡物理地址  
Inet addr ：IP地址  
Bcast：广播地址  
Mask：子网掩码  
UP：正在使用的网络接口  
RX packets,TX packets接收和传输的数据包个数  
RX byte，TX byte表示接搜和传输的具体数目  
Interrupt：终端信息  
Base address：内存地址

eth1 Link encap:Ethernet HWaddr 00:1B:78:40:8C:22  
inet addr:192.168.1.191 Bcast:192.168.1.255 Mask:255.255.255.0  
inet6 addr: fe80::21b:78ff:fe40:8c22/64 Scope:Link  
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1  
RX packets:29821173 errors:0 dropped:0 overruns:0 frame:0  
TX packets:28680326 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:4264958692 (3.9 GiB) TX bytes:427504706 (407.7 MiB)  
Interrupt:122 Memory:f8000000-f8012800  
  
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:30263265 errors:0 dropped:0 overruns:0 frame:0  
TX packets:30263265 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:0  
RX bytes:63016162 (60.0 MiB) TX bytes:63016162 (60.0 MiB)

ifconfig命令跟上-a参数，打印所有配置的网络接口，不论其是否激活。  
\[root@jfht ~\]\# ifconfig -a  
eth0 Link encap:Ethernet HWaddr 00:1B:78:40:8C:20  
inet addr:211.103.28.xx Bcast:211.103.28.31 Mask:255.255.255.224  
inet6 addr: fe80::21b:78ff:fe40:8c20/64 Scope:Link  
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1  
RX packets:134856877 errors:0 dropped:0 overruns:0 frame:0  
TX packets:140723396 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:1680524793 (1.5 GiB) TX bytes:2804859207 (2.6 GiB)  
Interrupt:114 Memory:fa000000-fa012800  
  
eth1 Link encap:Ethernet HWaddr 00:1B:78:40:8C:22  
inet addr:192.168.1.191 Bcast:192.168.1.255 Mask:255.255.255.0  
inet6 addr: fe80::21b:78ff:fe40:8c22/64 Scope:Link[货运专家][Link 2]  
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1  
RX packets:29821183 errors:0 dropped:0 overruns:0 frame:0  
TX packets:28680336 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:4264959332 (3.9 GiB) TX bytes:427505346 (407.7 MiB)  
Interrupt:122 Memory:f8000000-f8012800  
  
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:30263271 errors:0 dropped:0 overruns:0 frame:0  
TX packets:30263271 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:0  
RX bytes:63016642 (60.0 MiB) TX bytes:63016642 (60.0 MiB)  
  
sit0 Link encap:IPv6-in-IPv4  
NOARP MTU:1480 Metric:1  
RX packets:0 errors:0 dropped:0 overruns:0 frame:0[女装品牌排行榜][Link 3]  
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:0  
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

ifconfig命令跟上指定网络接口名称，就可以查看具体的网卡信息了。  
\[root@jfht ~\]\# ifconfig eth1  
eth1 Link encap:Ethernet HWaddr 00:1B:78:40:8C:22  
inet addr:192.168.1.191 Bcast:192.168.1.255 Mask:255.255.255.0  
inet6 addr: fe80::21b:78ff:fe40:8c22/64 Scope:Link  
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1  
RX packets:29821190 errors:0 dropped:0 overruns:0 frame:0  
TX packets:28680343 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:4264959780 (3.9 GiB) TX bytes:427505794 (407.7 MiB)  
Interrupt:122 Memory:f8000000-f8012800  
  
\[root@jfht ~\]\#

[Link 1]: http://blog.csdn.net/sky7034/article/details/6624769
[Link 2]: http://expert.cgfreight.cn/
[Link 3]: http://www.nvzhuangpaihangbang.com/