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  • 补充说明
  • 语法
  • 选项
  • 参数
  • 实例

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  1. 命令

ip

网络配置工具

补充说明

ip命令 用来显示或操纵Linux主机的路由、网络设备、策略路由和隧道,是Linux下较新的功能强大的网络配置工具。

语法

ip(选项)(参数)
Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }
       ip [ -force ] -batch filename

选项

OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |
       tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |
       netns | l2tp | macsec | tcp_metrics | token }

-V:显示指令版本信息;
-s:输出更详细的信息;
-f:强制使用指定的协议族;
-4:指定使用的网络层协议是IPv4协议;
-6:指定使用的网络层协议是IPv6协议;
-0:输出信息每条记录输出一行,即使内容较多也不换行显示;
-r:显示主机时,不使用IP地址,而使用主机的域名。

参数

OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |
        -h[uman-readable] | -iec |
        -f[amily] { inet | inet6 | ipx | dnet | bridge | link } |
        -4 | -6 | -I | -D | -B | -0 |
        -l[oops] { maximum-addr-flush-attempts } |
        -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |
        -rc[vbuf] [size] | -n[etns] name | -a[ll] }

网络对象:指定要管理的网络对象;
具体操作:对指定的网络对象完成具体操作;
help:显示网络对象支持的操作命令的帮助信息。

实例

ip link show                     # 显示网络接口信息
ip link set eth0 up             # 开启网卡
ip link set eth0 down            # 关闭网卡
ip link set eth0 promisc on      # 开启网卡的混合模式
ip link set eth0 promisc offi    # 关闭网卡的混个模式
ip link set eth0 txqueuelen 1200 # 设置网卡队列长度
ip link set eth0 mtu 1400        # 设置网卡最大传输单元
ip addr show     # 显示网卡IP信息
ip addr add 192.168.0.1/24 dev eth0 # 设置eth0网卡IP地址192.168.0.1
ip addr del 192.168.0.1/24 dev eth0 # 删除eth0网卡IP地址

ip route show # 显示系统路由
ip route add default via 192.168.1.254   # 设置系统默认路由
ip route list                 # 查看路由信息
ip route add 192.168.4.0/24  via  192.168.0.254 dev eth0 # 设置192.168.4.0网段的网关为192.168.0.254,数据走eth0接口
ip route add default via  192.168.0.254  dev eth0        # 设置默认网关为192.168.0.254
ip route del 192.168.4.0/24   # 删除192.168.4.0网段的网关
ip route del default          # 删除默认路由
ip route delete 192.168.1.0/24 dev eth0 # 删除路由

用ip命令显示网络设备的运行状态

[root@localhost ~]# ip link list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:16:3e:00:1e:51 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:16:3e:00:1e:52 brd ff:ff:ff:ff:ff:ff

显示更加详细的设备信息

[root@localhost ~]# ip -s link list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    RX: bytes  packets  errors  dropped overrun mcast   
    5082831    56145    0       0       0       0      
    TX: bytes  packets  errors  dropped carrier collsns
    5082831    56145    0       0       0       0      
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:16:3e:00:1e:51 brd ff:ff:ff:ff:ff:ff
    RX: bytes  packets  errors  dropped overrun mcast   
    3641655380 62027099 0       0       0       0      
    TX: bytes  packets  errors  dropped carrier collsns
    6155236    89160    0       0       0       0      
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:16:3e:00:1e:52 brd ff:ff:ff:ff:ff:ff
    RX: bytes  packets  errors  dropped overrun mcast   
    2562136822 488237847 0       0       0       0      
    TX: bytes  packets  errors  dropped carrier collsns
    3486617396 9691081  0       0       0       0

显示核心路由表

[root@localhost ~]# ip route list 
112.124.12.0/22 dev eth1  proto kernel  scope link  src 112.124.15.130
10.160.0.0/20 dev eth0  proto kernel  scope link  src 10.160.7.81
192.168.0.0/16 via 10.160.15.247 dev eth0
172.16.0.0/12 via 10.160.15.247 dev eth0
10.0.0.0/8 via 10.160.15.247 dev eth0
default via 112.124.15.247 dev eth1

显示邻居表

[root@localhost ~]# ip neigh list
112.124.15.247 dev eth1 lladdr 00:00:0c:9f:f3:88 REACHABLE
10.160.15.247 dev eth0 lladdr 00:00:0c:9f:f2:c0 STALE

获取主机所有网络接口

ip link | grep -E '^[0-9]' | awk -F: '{print $2}'
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Last updated 5 years ago

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