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+.. _wwan-interface:
+
+####################
+WirelessModem (WWAN)
+####################
+
+The wirelessmodem interface provides access (through a wireless modem/wwan)
+to wireless networks provided by various cellular providers. VyOS uses the
+interfaces wirelessmodem subsystem for configuration.
+
+*************
+Configuration
+*************
+
+Common interface configuration
+==============================
+
+.. cmdinclude:: ../_include/interface-description.txt
+   :var0: wirelessmodem
+   :var1: wlm0
+
+.. cmdinclude:: ../_include/interface-disable.txt
+   :var0: wirelessmodem
+   :var1: wlm0
+
+.. cmdinclude:: ../_include/interface-vrf.txt
+   :var0: wirelessmodem
+   :var1: wlm0
+
+WirelessModem (WWAN) options
+============================
+
+.. cfgcmd:: set interfaces wirelessmodem <interface> apn <apn>
+
+   Every WWAN connection requires an :abbr:`APN (Access Point Name)` which is
+   used by the client to dial into the ISPs network. This is a mandatory
+   parameter. Contact your Service Provider for correct APN.
+
+.. cfgcmd:: set interfaces wirelessmodem <interface> backup distance <metric>
+
+   Configure metric of the default route added via the Wireless Modem interface.
+   The default metric if not specified is 10.
+
+.. cfgcmd:: set interfaces wirelessmodem <interface> device <tty>
+
+   Device identifier of the underlaying physical interface. This is usually a
+   ttyUSB device, if not configured this defaults to ttyUSB2.
+
+.. cfgcmd:: set interfaces wirelessmodem <interface> no-peer-dns
+
+   Do not install DNS nameservers received from ISP into system wide nameserver
+   list.
+
+.. cfgcmd:: set interfaces wirelessmodem <interface> connect-on-demand
+
+   When set the interface is enabled for "dial-on-demand".
+
+   Use this command to instruct the system to establish a PPP connection
+   automatically once traffic passes through the interface. A disabled on-demand
+   connection is established at boot time and remains up. If the link fails for
+   any reason, the link is brought back up immediately.
+
+*********
+Operation
+*********
+
+.. opcmd:: show interfaces wirelessmodem <interface>
+
+   Retrive interface information from given WWAN interface.
+
+   .. code-block:: none
+
+     vyos@vyos:~$ show interfaces wirelessmodem wlm0
+     wlm0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master black state UNKNOWN group default qlen 3
+         link/ppp
+         inet 10.26.238.93 peer 10.64.64.64/32 scope global wlm0
+            valid_lft forever preferred_lft forever
+         Description: baaar
+
+         RX:  bytes    packets     errors    dropped    overrun      mcast
+                 38          5          0          0          0          0
+         TX:  bytes    packets     errors    dropped    carrier collisions
+                217          8          0          0          0          0
+
+.. opcmd:: show interfaces wirelessmodem <interface> statistics
+
+   Retrive interface statistics from given WWAN interface.
+
+   .. code-block:: none
+
+     vyos@vyos:~$ show interfaces wirelessmodem wlm0 statistics
+         IN   PACK VJCOMP  VJUNC  VJERR  |      OUT   PACK VJCOMP  VJUNC NON-VJ
+         38      5      0      0      0  |      217      8      0      0      8
+
+.. opcmd:: show interfaces wirelessmodem <interface> log
+
+   Displays log information for a WWAN interface.
+
+
+*******
+Example
+*******
+
+The following example is based on a Sierra Wireless MC7710 miniPCIe card (only
+the form factor in reality it runs UBS) and Deutsche Telekom as ISP. The card
+is assembled into a :ref:`pc-engines-apu4`.
+
+.. code-block:: none
+
+  set interfaces wirelessmodem wlm0 apn 'internet.telekom'
+  set interfaces wirelessmodem wlm0 backup distance '100'
+  set interfaces wirelessmodem wlm0 device 'ttyUSB2'
+  set interfaces wirelessmodem wlm0 disable
+  set interfaces wirelessmodem wlm0 no-peer-dns
+
+*****************
+Supported Modules
+*****************
+
+The following hardware modules have been tested successfully in an
+:ref:`pc-engines-apu4` board:
+
+* Sierra Wireless AirPrime MC7304 miniPCIe card (LTE)
+* Sierra Wireless AirPrime MC7430 miniPCIe card (LTE)
+* Sierra Wireless AirPrime MC7455 miniPCIe card (LTE)
+* Sierra Wireless AirPrime MC7710 miniPCIe card (LTE)
+* Huawei ME909u-521 miniPCIe card (LTE)
+* Huawei ME909s-120 miniPCIe card (LTE)