ip link命令介绍使用

link表示link层的意思，即链路层。该命令用于管理和查看网络接口。

具体命令的帮助信息如下所示，主要有add,delete,set和show等操作。

支持操作的虚拟接口由TYPE列出，有

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 }

针对虚拟接口的ip link操作可参看此博客

# ip link help
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 }