OpenGrok

ip-link - network device configuration .ad l ip "[ " OPTIONS " ]" link " { " COMMAND " | " help " }" OPTIONS " := { " -V[ersion] | -s[tatistics] | -r[esolve] | -f[amily] { inet " | " inet6 " | " ipx " | " dnet " | " link " } | " -o[neline] } "ip link add" "[ " link DEVICE " ]" "[ " name " ]" NAME "[ " txqueuelen PACKETS " ]" "[ " address LLADDR " ]" "[ " broadcast LLADDR " ]" "[ " mtu MTU " ]" type " TYPE" "[ " ARGS " ]" TYPE " := [ " vlan " | " veth " | " vcan " | " dummy " | " ifb " | " macvlan " | " can " | " bridge " ]" "ip link delete " DEVICE type " TYPE" "[ " ARGS " ]" "ip link set " { DEVICE " | " "group " GROUP "} { " up " | " down " | " arp " { " on " | " off " } |" promisc " { " on " | " off " } |" allmulticast " { " on " | " off " } |" dynamic " { " on " | " off " } |" multicast " { " on " | " off " } |" txqueuelen PACKETS " |" name NEWNAME " |" address LLADDR " |" broadcast LLADDR " |" mtu MTU " |" netns PID " |" netns NETNSNAME " |" alias NAME " |" vf NUM " [" mac LLADDR " ] [" vlan VLANID " [ " qos VLAN-QOS " ] ] [" rate TXRATE " ] [" spoofchk { on | off } ] | mode LINKMODE " |" state LINKSTATE " |" master DEVICE nomaster " }" ip link show "[ " DEVICE " | " group GROUP " ]"

link " DEVICE " specifies the physical device to act operate on. NAME specifies the name of the new virtual device. TYPE specifies the type of the new device. Link types: vlan - 802.1q tagged virtual LAN interface veth - Virtual ethernet interface vcan - Virtual Local CAN interface dummy - Dummy network interface ifb - Intermediate Functional Block device macvlan - virtual interface base on link layer address (MAC) can - Controller Area Network interface bridge - Ethernet Bridge device

DEVICE specifies the virtual device to act operate on. TYPE specifies the type of the device.

dev " DEVICE " specifies the physical device to act operate on.

dev " DEVICE " DEVICE specifies network device to operate on. When configuring SR-IOV Virtual Fuction (VF) devices, this keyword should specify the associated Physical Function (PF) device.

group " GROUP " GROUP has a dual role: If both group and dev are present, then move the device to the specified group. If only a group is specified, then the command operates on all devices in that group.

up " and " down change the state of the device to UP or "DOWN" .

"arp on " or " arp off" change the NOARP flag on the device.

"multicast on " or " multicast off" change the MULTICAST flag on the device.

"dynamic on " or " dynamic off" change the DYNAMIC flag on the device.

name " NAME" change the name of the device. This operation is not recommended if the device is running or has some addresses already configured.

txqueuelen " NUMBER"

txqlen " NUMBER" change the transmit queue length of the device.

mtu " NUMBER" change the MTU of the device.

address " LLADDRESS" change the station address of the interface.

broadcast " LLADDRESS"

brd " LLADDRESS"

peer " LLADDRESS" change the link layer broadcast address or the peer address when the interface is "POINTOPOINT" .

netns " PID" move the device to the network namespace associated with the process "PID".

netns " NETNSNAME" move the device to the network namespace associated with name "NETNSNAME".

mode " LINKMODE" allows setting link mode which determines which RFC2863 operational state the device will transistion to when it is brought up. Setting dormant mode changes the behaviour so that device goes into DORMANT state instead of UP when driver is ready.

state " LINKSTATE" allows setting the operational link state. The values (defined in RFC2863) are: UP, DOWN, TESTING, UNKNOWN, DORMANT, NOTPRESENT, LOWERLAYERDOWN.

alias " NAME" give the device a symbolic name for easy reference.

group " GROUP" specify the group the device belongs to. The available groups are listed in file "/etc/iproute2/group" .

vf " NUM" specify a Virtual Function device to be configured. The associated PF device must be specified using the dev parameter. mac " LLADDRESS" - change the station address for the specified VF. The vf parameter must be specified. vlan " VLANID" - change the assigned VLAN for the specified VF. When specified, all traffic sent from the VF will be tagged with the specified VLAN ID. Incoming traffic will be filtered for the specified VLAN ID, and will have all VLAN tags stripped before being passed to the VF. Setting this parameter to 0 disables VLAN tagging and filtering. The vf parameter must be specified. qos " VLAN-QOS" - assign VLAN QOS (priority) bits for the VLAN tag. When specified, all VLAN tags transmitted by the VF will include the specified priority bits in the VLAN tag. If not specified, the value is assumed to be 0. Both the vf and vlan parameters must be specified. Setting both vlan and qos as 0 disables VLAN tagging and filtering for the VF. rate " TXRATE" - change the allowed transmit bandwidth, in Mbps, for the specified VF. Setting this parameter to 0 disables rate limiting. The vf parameter must be specified. spoofchk " on|off" - turn packet spoof checking on or off for the specified VF.

master " DEVICE" set master device of the device (enslave device).

nomaster unset master device of the device (release device).

Warning: If multiple parameter changes are requested, ip aborts immediately after any of the changes have failed. This is the only case when ip can move the system to an unpredictable state. The solution is to avoid changing several parameters with one ip link set call.

dev " NAME " (default) NAME specifies the network device to show. If this argument is omitted all devices in the default group are listed.

group " GROUP " GROUP specifies what group of devices to show.

up only display running interfaces.

ip link show Shows the state of all network interfaces on the system.

ip link set dev ppp0 mtu 1400 Change the MTU the ppp0 device.

ip link add link eth0 name eth0.10 type vlan id 10 Creates a new vlan device eth0.10 on device eth0.

ip link delete dev eth0.10 Removes vlan device.

ip (8) Original Manpage by Michail Litvak <mci (at] owl.openwall.com>