配置Linux网络属性：ip命令

1. ip命令
show / manipulate routing,devices,policy routing and tunnels

ip [ OPTIONS ] OBJECT { COMMAND | help }
      OBJECT := { link | address | route}

1）link: network device.
            list 用ip命令显示网络设备的运行状态

show [dev IFace]指定接口显示

[up]仅显示处于激活状态的接口

set dev IFACE 可设置属性的UP/DOWN

2) addr:  (address)
          - protocol (IP or IPv6) address on a device.
          ip addr {add|del} IFADDR dev IFNAME
                                    添加|删除    地址       设备名

ip address {save|flush} [ dev IFNAME ] [ scope ScopE-ID ][ label LABEL ] [up]
                flush:清空
                        [label LABEL] 添加地址时指明网卡别名
                        [ scope {global|link|host}] 指明作用域
                        global：全局有效（默认） link：仅链接有效  host：本机有效
                        IFADDR := [ broadcast ADDR ] 指明广播地址

        ip address [ show [ dev IFNAME ] [ label LABEL ] [up] ]

3）route: routing table entry.
        ip route { add | del } ROUTE
        (1) ip route add
                    添加路由：ip route add TARGET via GW dev IFace src source_ip
                         TARGET: 主机路由  ip
                                         网络路由 network/mask

添加网关：ip route add default via GW dev IFACE

(2) ip route delete
         删除路由: ip route del TARGET

(3) ip route flush 清空
             [dev IFACE]