linux ip 命令

网络配置工具

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192.168.0.1ip 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192.168.0.254ip 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 list1: lo:  mtu 16436 qdisc noqueue    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:002: eth0:  mtu 1500 qdisc pfifo_fast qlen 1000    link/ether 00:16:3e:00:1e:51 brd ff:ff:ff:ff:ff:ff3: eth1:  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 list1: lo:  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:  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:  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 112.124.15.13010.160.0.0/20 dev eth0  proto kernel  scope link  src 10.160.7.81192.168.0.0/16 via 10.160.15.247 dev eth0172.16.0.0/12 via 10.160.15.247 dev eth010.0.0.0/8 via 10.160.15.247 dev eth0default via 112.124.15.247 dev eth1

显示邻居表

[root@localhost ~]# ip neigh list112.124.15.247 dev eth1 lladdr 00:00:0c:9f:f3:88 REACHABLE10.160.15.247 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}'

文档来源 https://github.com/jaywcjlove/linux-command

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