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:lastproofread: 2023-01-26
.. _wireless-interface:
########################
WLAN/WIFI - Wireless LAN
########################
:abbr:`WLAN (Wireless LAN)` interface provide 802.11 (a/b/g/n/ac) wireless
support (commonly referred to as Wi-Fi) by means of compatible hardware. If your
hardware supports it, VyOS supports multiple logical wireless interfaces per
physical device.
There are three modes of operation for a wireless interface:
* :abbr:`WAP (Wireless Access-Point)` provides network access to connecting
stations if the physical hardware supports acting as a WAP
* A station acts as a Wi-Fi client accessing the network through an available
WAP
* Monitor, the system passively monitors any kind of wireless traffic
If the system detects an unconfigured wireless device, it will be automatically
added the configuration tree, specifying any detected settings (for example,
its MAC address) and configured to run in monitor mode.
*************
Configuration
*************
Common interface configuration
==============================
.. cmdinclude:: /_include/interface-common-with-dhcp.txt
:var0: wireless
:var1: wlan0
System Wide configuration
=========================
.. cfgcmd:: set system wireless country-code <cc>
Country code (ISO/IEC 3166-1). Used to set regulatory domain. Set as needed
to indicate country in which device is operating. This can limit available
channels and transmit power.
.. note:: This option is mandatory in Access-Point mode.
Wireless options
================
.. cfgcmd:: set interfaces wireless <interface> channel <number>
Channel number (IEEE 802.11), for 2.4Ghz (802.11 b/g/n) channels range from
1-14. On 5Ghz (802.11 a/h/j/n/ac) channels available are 0, 34 to 173
.. cfgcmd:: set interfaces wireless <interface> disable-broadcast-ssid
Send empty SSID in beacons and ignore probe request frames that do not specify
full SSID, i.e., require stations to know SSID.
.. cfgcmd:: set interfaces wireless <interface> expunge-failing-stations
Disassociate stations based on excessive transmission failures or other
indications of connection loss.
This depends on the driver capabilities and may not be available with all
drivers.
.. cfgcmd:: set interfaces wireless <interface> isolate-stations
Client isolation can be used to prevent low-level bridging of frames between
associated stations in the BSS.
By default, this bridging is allowed.
.. cfgcmd:: set interfaces wireless <interface> max-stations
Maximum number of stations allowed in station table. New stations will be
rejected after the station table is full. IEEE 802.11 has a limit of 2007
different association IDs, so this number should not be larger than that.
This defaults to 2007.
.. cfgcmd:: set interfaces wireless <interface> mgmt-frame-protection
Management Frame Protection (MFP) according to IEEE 802.11w
.. cfgcmd:: set interfaces wireless <interface> mode <a | b | g | n | ac>
Operation mode of wireless radio.
* ``a`` - 802.11a - 54 Mbits/sec
* ``b`` - 802.11b - 11 Mbits/sec
* ``g`` - 802.11g - 54 Mbits/sec (default)
* ``n`` - 802.11n - 600 Mbits/sec
* ``ac`` - 802.11ac - 1300 Mbits/sec
.. cfgcmd:: set interfaces wireless <interface> physical-device <device>
Wireless hardware device used as underlay radio.
This defaults to phy0.
.. cfgcmd:: set interfaces wireless <interface> reduce-transmit-power <number>
Add Power Constraint element to Beacon and Probe Response frames.
This option adds Power Constraint element when applicable and Country element
is added. Power Constraint element is required by Transmit Power Control.
Valid values are 0..255.
.. cfgcmd:: set interfaces wireless <interface> ssid <ssid>
SSID to be used in IEEE 802.11 management frames
.. cfgcmd:: set interfaces wireless <interface> type
<access-point | station | monitor>
Wireless device type for this interface
* ``access-point`` - Access-point forwards packets between other nodes
* ``station`` - Connects to another access point
* ``monitor`` - Passively monitor all packets on the frequency/channel
.. cmdinclude:: /_include/interface-per-client-thread.txt
:var0: wireless
:var1: wlan0
PPDU
----
.. cfgcmd:: set interfaces wireless <interface> capabilities require-ht
.. cfgcmd:: set interfaces wireless <interface> capabilities require-hvt
HT (High Throughput) capabilities (802.11n)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. cfgcmd:: set interfaces wireless <interface> capabilities ht 40mhz-incapable
Device is incapable of 40 MHz, do not advertise. This sets ``[40-INTOLERANT]``
.. cfgcmd:: set interfaces wireless <interface> capabilities ht auto-powersave
WMM-PS Unscheduled Automatic Power Save Delivery [U-APSD]
.. cfgcmd:: set interfaces wireless <interface> capabilities ht
channel-set-width <ht20 | ht40+ | ht40->
Supported channel width set.
* ``ht40-`` - Both 20 MHz and 40 MHz with secondary channel below the primary
channel
* ``ht40+`` - Both 20 MHz and 40 MHz with secondary channel above the primary
channel
.. note:: There are limits on which channels can be used with HT40- and HT40+.
Following table shows the channels that may be available for HT40- and HT40+
use per IEEE 802.11n Annex J:
Depending on the location, not all of these channels may be available for
use!
.. code-block:: none
freq HT40- HT40+
2.4 GHz 5-13 1-7 (1-9 in Europe/Japan)
5 GHz 40,48,56,64 36,44,52,60
.. note:: 40 MHz channels may switch their primary and secondary channels if
needed or creation of 40 MHz channel maybe rejected based on overlapping
BSSes. These changes are done automatically when hostapd is setting up the
40 MHz channel.
.. cfgcmd:: set interfaces wireless <interface> capabilities ht
delayed-block-ack
Enable HT-delayed Block Ack ``[DELAYED-BA]``
.. cfgcmd:: set interfaces wireless <interface> capabilities ht dsss-cck-40
DSSS/CCK Mode in 40 MHz, this sets ``[DSSS_CCK-40]``
.. cfgcmd:: set interfaces wireless <interface> capabilities ht greenfield
This enables the greenfield option which sets the ``[GF]`` option
.. cfgcmd:: set interfaces wireless <interface> capabilities ht ldpc
Enable LDPC coding capability
.. cfgcmd:: set interfaces wireless <interface> capabilities ht lsig-protection
Enable L-SIG TXOP protection capability
.. cfgcmd:: set interfaces wireless <interface> capabilities ht max-amsdu
<3839 | 7935>
Maximum A-MSDU length 3839 (default) or 7935 octets
.. cfgcmd:: set interfaces wireless <interface> capabilities ht
short-gi <20 | 40>
Short GI capabilities for 20 and 40 MHz
.. cfgcmd:: set interfaces wireless <interface> capabilities ht
smps <static | dynamic>
Spatial Multiplexing Power Save (SMPS) settings
.. cfgcmd:: set interfaces wireless <interface> capabilities ht stbc rx <num>
Enable receiving PPDU using STBC (Space Time Block Coding)
.. cfgcmd:: set interfaces wireless <interface> capabilities ht stbc tx
Enable sending PPDU using STBC (Space Time Block Coding)
VHT (Very High Throughput) capabilities (802.11ac)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. cfgcmd:: set interfaces wireless <interface> capabilities vht antenna-count
Number of antennas on this card
.. cfgcmd:: set interfaces wireless <interface> capabilities vht
antenna-pattern-fixed
Set if antenna pattern does not change during the lifetime of an association
.. cfgcmd:: set interfaces wireless <interface> capabilities vht beamform
<single-user-beamformer | single-user-beamformee | multi-user-beamformer |
multi-user-beamformee>
Beamforming capabilities:
* ``single-user-beamformer`` - Support for operation as single user beamformer
* ``single-user-beamformee`` - Support for operation as single user beamformee
* ``multi-user-beamformer`` - Support for operation as single user beamformer
* ``multi-user-beamformee`` - Support for operation as single user beamformer
.. cfgcmd:: set interfaces wireless <interface> capabilities vht
center-channel-freq <freq-1 | freq-2> <number>
VHT operating channel center frequency - center freq 1
(for use with 80, 80+80 and 160 modes)
VHT operating channel center frequency - center freq 2
(for use with the 80+80 mode)
<number> must be from 34 - 173. For 80 MHz channels it should be channel + 6.
.. cfgcmd:: set interfaces wireless <interface> capabilities vht
channel-set-width <0 | 1 | 2 | 3>
* ``0`` - 20 or 40 MHz channel width (default)
* ``1`` - 80 MHz channel width
* ``2`` - 160 MHz channel width
* ``3`` - 80+80 MHz channel width
.. cfgcmd:: set interfaces wireless <interface> capabilities vht ldpc
Enable LDPC (Low Density Parity Check) coding capability
.. cfgcmd:: set interfaces wireless <interface> capabilities vht link-adaptation
VHT link adaptation capabilities
.. cfgcmd:: set interfaces wireless <interface> capabilities vht
max-mpdu <value>
Increase Maximum MPDU length to 7991 or 11454 octets (default 3895 octets)
.. cfgcmd:: set interfaces wireless <interface> capabilities vht
max-mpdu-exp <value>
Set the maximum length of A-MPDU pre-EOF padding that the station can receive
.. cfgcmd:: set interfaces wireless <interface> capabilities vht
short-gi <80 | 160>
Short GI capabilities
.. cfgcmd:: set interfaces wireless <interface> capabilities vht stbc rx <num>
Enable receiving PPDU using STBC (Space Time Block Coding)
.. cfgcmd:: set interfaces wireless <interface> capabilities vht stbc tx
Enable sending PPDU using STBC (Space Time Block Coding)
.. cfgcmd:: set interfaces wireless <interface> capabilities vht tx-powersave
Enable VHT TXOP Power Save Mode
.. cfgcmd:: set interfaces wireless <interface> capabilities vht vht-cf
Station supports receiving VHT variant HT Control field
Wireless options (Station/Client)
=================================
The example creates a wireless station (commonly referred to as Wi-Fi client)
that accesses the network through the WAP defined in the above example. The
default physical device (``phy0``) is used.
.. code-block:: none
set interfaces wireless wlan0 type station
set interfaces wireless wlan0 address dhcp
set interfaces wireless wlan0 country-code de
set interfaces wireless wlan0 ssid Test
set interfaces wireless wlan0 security wpa passphrase '12345678'
Resulting in
.. code-block:: none
interfaces {
[...]
wireless wlan0 {
address dhcp
country-code de
security {
wpa {
passphrase "12345678"
}
}
ssid TEST
type station
}
Security
========
:abbr:`WPA (Wi-Fi Protected Access)` and WPA2 Enterprise in combination with
802.1x based authentication can be used to authenticate users or computers
in a domain.
The wireless client (supplicant) authenticates against the RADIUS server
(authentication server) using an :abbr:`EAP (Extensible Authentication
Protocol)` method configured on the RADIUS server. The WAP (also referred
to as authenticator) role is to send all authentication messages between the
supplicant and the configured authentication server, thus the RADIUS server
is responsible for authenticating the users.
The WAP in this example has the following characteristics:
* IP address ``192.168.2.1/24``
* Network ID (SSID) ``Enterprise-TEST``
* WPA passphrase ``12345678``
* Use 802.11n protocol
* Wireless channel ``1``
* RADIUS server at ``192.168.3.10`` with shared-secret ``VyOSPassword``
.. code-block:: none
set interfaces wireless wlan0 address '192.168.2.1/24'
set interfaces wireless wlan0 country-code de
set interfaces wireless wlan0 type access-point
set interfaces wireless wlan0 channel 1
set interfaces wireless wlan0 mode n
set interfaces wireless wlan0 ssid 'TEST'
set interfaces wireless wlan0 security wpa mode wpa2
set interfaces wireless wlan0 security wpa cipher CCMP
set interfaces wireless wlan0 security wpa radius server 192.168.3.10 key 'VyOSPassword'
set interfaces wireless wlan0 security wpa radius server 192.168.3.10 port 1812
Resulting in
.. code-block:: none
interfaces {
[...]
wireless wlan0 {
address 192.168.2.1/24
country-code de
channel 1
mode n
security {
wpa {
cipher CCMP
mode wpa2
radius {
server 192.168.3.10 {
key 'VyOSPassword'
port 1812
}
}
}
}
ssid "Enterprise-TEST"
type access-point
}
}
VLAN
====
Regular VLANs (802.1q)
----------------------
.. cmdinclude:: /_include/interface-vlan-8021q.txt
:var0: wireless
:var1: wlan0
QinQ (802.1ad)
--------------
.. cmdinclude:: /_include/interface-vlan-8021ad.txt
:var0: wireless
:var1: wlan0
*********
Operation
*********
.. opcmd:: show interfaces wireless info
Use this command to view operational status and wireless-specific information
about all wireless interfaces.
.. code-block:: none
vyos@vyos:~$ show interfaces wireless info
Interface Type SSID Channel
wlan0 access-point VyOS-TEST-0 1
.. opcmd:: show interfaces wireless detail
Use this command to view operational status and details wireless-specific
information about all wireless interfaces.
.. code-block:: none
vyos@vyos:~$ show interfaces wireless detail
wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether XX:XX:XX:XX:XX:c3 brd XX:XX:XX:XX:XX:ff
inet xxx.xxx.99.254/24 scope global wlan0
valid_lft forever preferred_lft forever
inet6 fe80::xxxx:xxxx:fe54:2fc3/64 scope link
valid_lft forever preferred_lft forever
RX: bytes packets errors dropped overrun mcast
66072 282 0 0 0 0
TX: bytes packets errors dropped carrier collisions
83413 430 0 0 0 0
wlan1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether XX:XX:XX:XX:XX:c3 brd XX:XX:XX:XX:XX:ff
inet xxx.xxx.100.254/24 scope global wlan0
valid_lft forever preferred_lft forever
inet6 fe80::xxxx:xxxx:ffff:2ed3/64 scope link
valid_lft forever preferred_lft forever
RX: bytes packets errors dropped overrun mcast
166072 5282 0 0 0 0
TX: bytes packets errors dropped carrier collisions
183413 5430 0 0 0 0
.. opcmd:: show interfaces wireless <wlanX>
This command shows both status and statistics on the specified wireless
interface. The wireless interface identifier can range from wlan0 to wlan999.
.. code-block:: none
vyos@vyos:~$ show interfaces wireless wlan0
wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether XX:XX:XX:XX:XX:c3 brd XX:XX:XX:XX:XX:ff
inet xxx.xxx.99.254/24 scope global wlan0
valid_lft forever preferred_lft forever
inet6 fe80::xxxx:xxxx:fe54:2fc3/64 scope link
valid_lft forever preferred_lft forever
RX: bytes packets errors dropped overrun mcast
66072 282 0 0 0 0
TX: bytes packets errors dropped carrier collisions
83413 430 0 0 0 0
.. opcmd:: show interfaces wireless <wlanX> brief
This command gives a brief status overview of a specified wireless interface.
The wireless interface identifier can range from wlan0 to wlan999.
.. code-block:: none
vyos@vyos:~$ show interfaces wireless wlan0 brief
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface IP Address S/L Description
--------- ---------- --- -----------
wlan0 192.168.2.254/24 u/u
.. opcmd:: show interfaces wireless <wlanX> queue
Use this command to view wireless interface queue information.
The wireless interface identifier can range from wlan0 to wlan999.
.. code-block:: none
vyos@vyos:~$ show interfaces wireless wlan0 queue
qdisc pfifo_fast 0: root bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
Sent 810323 bytes 6016 pkt (dropped 0, overlimits 0 requeues 0)
rate 0bit 0pps backlog 0b 0p requeues 0
.. opcmd:: show interfaces wireless <wlanX> scan
This command is used to retrieve information about WAP within the range of your
wireless interface. This command is useful on wireless interfaces configured
in station mode.
.. note:: Scanning is not supported on all wireless drivers and wireless
hardware. Refer to your driver and wireless hardware documentation for
further details.
.. code-block:: none
vyos@vyos:~$ show interfaces wireless wlan0 scan
Address SSID Channel Signal (dbm)
00:53:3b:88:6e:d8 WLAN-576405 1 -64.00
00:53:3b:88:6e:da Telekom_FON 1 -64.00
00:53:00:f2:c2:a4 BabyView_F2C2A4 6 -60.00
00:53:3b:88:6e:d6 Telekom_FON 100 -72.00
00:53:3b:88:6e:d4 WLAN-576405 100 -71.00
00:53:44:a4:96:ec KabelBox-4DC8 56 -81.00
00:53:d9:7a:67:c2 WLAN-741980 1 -75.00
00:53:7c:99:ce:76 Vodafone Homespot 1 -86.00
00:53:44:a4:97:21 KabelBox-4DC8 1 -78.00
00:53:44:a4:97:21 Vodafone Hotspot 1 -79.00
00:53:44:a4:97:21 Vodafone Homespot 1 -79.00
00:53:86:40:30:da Telekom_FON 1 -86.00
00:53:7c:99:ce:76 Vodafone Hotspot 1 -86.00
00:53:44:46:d2:0b Vodafone Hotspot 1 -87.00
********
Examples
********
The following example creates a WAP. When configuring multiple WAP interfaces,
you must specify unique IP addresses, channels, Network IDs commonly referred
to as :abbr:`SSID (Service Set Identifier)`, and MAC addresses.
The WAP in this example has the following characteristics:
* IP address ``192.168.2.1/24``
* Network ID (SSID) ``TEST``
* WPA passphrase ``12345678``
* Use 802.11n protocol
* Wireless channel ``1``
.. code-block:: none
set interfaces wireless wlan0 address '192.168.2.1/24'
set interfaces wireless wlan0 type access-point
set interfaces wireless wlan0 channel 1
set interfaces wireless wlan0 mode n
set interfaces wireless wlan0 ssid 'TEST'
set interfaces wireless wlan0 security wpa mode wpa2
set interfaces wireless wlan0 security wpa cipher CCMP
set interfaces wireless wlan0 security wpa passphrase '12345678'
set interfaces wireless wlan0 country-code de
Resulting in
.. code-block:: none
interfaces {
[...]
wireless wlan0 {
address 192.168.2.1/24
channel 1
country-code de
mode n
security {
wpa {
cipher CCMP
mode wpa2
passphrase "12345678"
}
}
ssid "TEST"
type access-point
}
}
system {
[...]
wifi-regulatory-domain DE
}
To get it to work as an access point with this configuration you will need
to set up a DHCP server to work with that network. You can - of course - also
bridge the Wireless interface with any configured bridge
(:ref:`bridge-interface`) on the system.
.. _wireless-interface-intel-ax200:
Intel AX200
===========
The Intel AX200 card does not work out of the box in AP mode, see
https://unix.stackexchange.com/questions/598275/intel-ax200-ap-mode. You can
still put this card into AP mode using the following configuration:
.. stop_vyoslinter
.. code-block:: none
set interfaces wireless wlan0 channel '1'
set interfaces wireless wlan0 country-code 'us'
set interfaces wireless wlan0 mode 'n'
set interfaces wireless wlan0 physical-device 'phy0'
set interfaces wireless wlan0 ssid 'VyOS'
set interfaces wireless wlan0 type 'access-point'
.. start_vyoslinter
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