ip link命令格式

命令实例 ip link add link eth0 name eth0.10 type vlan id 10

命令实例 解释
ip link add link eth0 name eth0.10 type vlan id 10 在设备eth0上创建新的vlan设备eth0.10
ip link set eth0 up 或：ifconfig eth0 up 开启eth0网卡
ip link set eth0 down或：ifconfig eth0 down 关闭eth0网卡
ip link set eth0 promisc on 开启网卡的混合模式
ip link set eth0 promisc off 关闭网卡的混合模式
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 link show 显示网络接口信息
ip link show eht0 显示eth0网卡的网络接口信息
ip link show type vlan 显示vlan类型设备
ip link delete dev eth0.10 删除设备 
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[root@k8s-master ~]# ip link help link
Usage: ip link add [link DEV] [ name ] NAME
                   [ txqueuelen PACKETS ]
                   [ address LLADDR ]
                   [ broadcast LLADDR ]
                   [ mtu MTU ] [index IDX ]
                   [ numtxqueues QUEUE_COUNT ]
                   [ numrxqueues QUEUE_COUNT ]
                   type TYPE [ ARGS ]

       ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]

       ip link set { DEVICE | dev DEVICE | group DEVGROUP }
                          [ { up | down } ]
                          [ type TYPE ARGS ]
                          [ arp { on | off } ]
                          [ dynamic { on | off } ]
                          [ multicast { on | off } ]
                          [ allmulticast { on | off } ]
                          [ promisc { on | off } ]
                          [ trailers { on | off } ]
                          [ carrier { on | off } ]
                          [ txqueuelen PACKETS ]
                          [ name NEWNAME ]
                          [ address LLADDR ]
                          [ broadcast LLADDR ]
                          [ mtu MTU ]
                          [ netns { PID | NAME } ]
                          [ link-netnsid ID ]
                          [ alias NAME ]
                          [ vf NUM [ mac LLADDR ]
                                   [ vlan VLANID [ qos VLAN-QOS ] [ proto VLAN-PROTO ] ]
                                   [ rate TXRATE ]
                                   [ max_tx_rate TXRATE ]
                                   [ min_tx_rate TXRATE ]
                                   [ spoofchk { on | off} ]
                                   [ query_rss { on | off} ]
                                   [ state { auto | enable | disable} ] ]
                                   [ trust { on | off} ] ]
                                   [ node_guid { eui64 } ]
                                   [ port_guid { eui64 } ]
                          [ xdp { off |
                                  object FILE [ section NAME ] [ verbose ] |
                                  pinned FILE } ]
                          [ master DEVICE ][ vrf NAME ]
                          [ nomaster ]
                          [ addrgenmode { eui64 | none | stable_secret | random } ]
                          [ protodown { on | off } ]

       ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]

       ip link xstats type TYPE [ ARGS ]

       ip link afstats [ dev DEVICE ]

       ip link help [ TYPE ]

TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | macvtap |
          bridge | bond | team | ipoib | ip6tnl | ipip | sit | vxlan |
          gre | gretap | ip6gre | ip6gretap | vti | nlmon | team_slave |
          bond_slave | ipvlan | geneve | bridge_slave | vrf | macsec }