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.Dd $Mdocdate: April 15 2024 $ .Dt UMB 4 .Os .Sh NAME .Nm umb .Nd USB Mobile Broadband Interface Model (MBIM) .Sh SYNOPSIS .Cd "umb* at uhub?" .Sh DESCRIPTION The .Nm driver provides support for USB MBIM devices.
p MBIM devices establish connections via cellular networks such as GPRS, UMTS, and LTE. They appear as a regular point-to-point network interface, transporting raw IP frames. Once a connection is established, the device will automatically set an IP address and send out a nameserver proposal, which .Xr resolvd 8 can act on.
p Required configuration parameters like PIN and APN have to be set with .Xr ifconfig 8 . Once the SIM card has been unlocked with the correct PIN, it will remain in this state until the MBIM device is power-cycled. In case the device is connected to an "always-on" USB port, it may be possible to connect to a provider without entering the PIN again even if the system was rebooted. .Sh HARDWARE The following devices should work:
p
l -tag -width Ds -offset indent -compact t Dell DW5821e t Ericsson H5321gw and N5321gw t Fibocom L831-EAU .It Huawei ME906s -- attaches but needs more work
t Medion Mobile S4222 (MediaTek OEM) t Quectel EC25 t Quectel EM060K t Quectel RM500Q t SIMCom SIM7600 t SIMCom SIM8262E-M2 t Sierra Wireless EM7345 t Sierra Wireless EM7455 t Sierra Wireless EM8805 t Sierra Wireless MC8305 .El
.Sh EXAMPLES
The following
.Xr hostname.if 5
example configures umb0 to set the APN to
.Dq internet ,
enabling data roaming,
and obtaining an IP address using IPv6 stateless address autoconfiguration:
d -literal -offset indent pin 1234
apn internet
inet6 autoconf
roaming
.Ed
.Sh SEE ALSO
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr usb 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8 ,
.Xr route 8
.Rs
.%T "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model"
.%U https://www.usb.org/document-library/mobile-broadband-interface-model-v10-errata-1-and-adopters-agreement
.Re
.Sh CAVEATS
Devices which fail to provide a conforming MBIM implementation will
probably be attached as some other driver, such as
.Xr umsm 4 .