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Peter Andersson
peter@it-slav.net

I've already got a female to worry about. Her name is the Enterprise.
-- Kirk, "The Corbomite Maneuver", stardate 1514.0

Background

After succesfully installed my new Linksys WRT160NL with OpenWrt, the next step is to configure it. As the summer is approaching and my need for Internet access in our summer cottage will arrise. The summer cottage is in the middle of nowhere so it would be handy to put a USB dongle and the Wlan router in the spot with best 3G field strength and use the WiFi to connect several computers to the router and Internet.

The 3G USB modem is a Huawei modem I bought for 20 EUR and unlocked using this guide.

I found an excellent guide describing excactly what I wanted todo but it did not work 100% in my environment so I will describe what I did to get it running. Read the guide to get background and deeper explanation of how things are done. This guide assumes that you have read the guide, basic knowledge of OpenWRT, howto edit files in a Linux environment and so on.

 

Installation

The USB hardware and the modem need some extra packages to be installed. I installed the following:

root@WRT160NL:~#opkg install kmod-ar9170 kmod-usb-acm kmod-usb-core kmod-usb-ohci kmod-usb-serial comgt
kmod-usb-serial-option kmod-usb-storage kmod-usb-uhci kmod-usb2  usb-switch

Probably not all of them are necessery but during my tests and fiddeling these are the ones I installed.

 

Configuration

Create /etc/modules.d/60-usb-serial:

usbserial vendor=0x12d1 product=0x1446
 

The vendor and product parameters can be found by attaching the 3G modem and run:

root@WRT160NL:~# cat /proc/bus/usb/devices

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh= 1
B:  Alloc=  0/800 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev= 2.06
S:  Manufacturer=Linux 2.6.32.10 ehci_hcd
S:  Product=Atheros AR91xx built-in EHCI controller
S:  SerialNumber=ar71xx-ehci
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=12d1 ProdID=1446 Rev= 0.00
S:  Manufacturer=HUAWEI Technology
S:  Product=HUAWEI Mobile
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usbserial_generic
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usbserial_generic
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
 

The parameters are marked in yellow above.

 

 

The next step is to configure usb switch. Create /etc/usb-modeswitch.conf

########################################################
# Huawei E270+  (HSPA+ modem)

DefaultVendor= 0x12d1
DefaultProduct=0x1446

TargetVendor=  0x12d1
TargetProductList="1001,1406,140c,14ac"

CheckSuccess=20

MessageContent="55534243123456780000000000000011060000000000000000000000000000"

I have no clue of the syntax but I copied it from my Ubuntu machine /etc/usb_modeswitch.d/12d1:1446 and it works:-)

 

 

Add the following to /etc/config/network

config 'interface' 'ppp0'
    option 'ifname' 'ppp0'
    option 'proto' '3g'
    option 'device' '/dev/ttyUSB0'
    option 'apn' 'internet.tele2.se'
    option 'pincode' '1234'

The pincode is obvious, the apn is local and given by your local operator. It is handy to configure it to work in Ubuntu and then look at the configuration Ubuntu creates.
 

 

The firewall rules need to be updated and I added ppp0 to the wan section in /etc/config/firewall

config 'zone'
    option 'name' 'wan'
    option 'input' 'REJECT'
    option 'output' 'ACCEPT'
    option 'forward' 'REJECT'
    option 'masq' '1'
    option 'mtu_fix' '1'
    option 'network' 'wan ppp0'

To make the change to take effect run:

root@WRT160NL:~# /etc/init.d/firewall restart
 

 

Start it

Attach the modem and run:

root@WRT160NL:~# usb_modeswitch

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
 Found default devices (1)
Accessing device 002 on bus 001 ...
Using endpoints 0x01 (out) and 0x81 (in)
Inquiring device details; driver will be detached ...
Looking for active driver ...
 OK, driver found ("usbserial_generic")
 OK, driver "usbserial_generic" detached

SCSI inquiry data (for identification)
-------------------------
  Vendor String: HUAWEI 
   Model String: Mass Storage   
Revision String: 2.31
-------------------------

USB description data (for identification)
-------------------------
Manufacturer: HUAWEI Technology
     Product: HUAWEI Mobile
  Serial No.: not provided
-------------------------
Setting up communication with interface 0 ...
Trying to send the message to endpoint 0x01 ...
 OK, message successfully sent
 Device is gone, skipping any further commands

Checking for mode switch (max. 20 times, once per second) ...
 Original device is gone already, not checking
 Searching for target devices ...
 Searching for target devices ...
 Searching for target devices ...
 Searching for target devices ...
 Searching for target devices ...
 Found correct target device

Mode switch succeeded. Bye.
 

 

logread should now give something similiar to:

Jun 12 17:29:11 WRT160NL user.info kernel: generic ttyUSB0: generic converter now disconnected from ttyUSB0
Jun 12 17:29:11 WRT160NL user.info kernel: usbserial_generic 1-1:1.0: device disconnected
Jun 12 17:29:11 WRT160NL user.warn kernel: usb 1-1: usbfs: process 1345 (usb_modeswitch) did not claim interface 0 before use
Jun 12 17:29:11 WRT160NL user.info kernel: usb 1-1: USB disconnect, address 2
Jun 12 17:29:11 WRT160NL user.info kernel: generic ttyUSB1: generic converter now disconnected from ttyUSB1
Jun 12 17:29:11 WRT160NL user.info kernel: usbserial_generic 1-1:1.1: device disconnected
Jun 12 17:29:16 WRT160NL user.info kernel: usb 1-1: new high speed USB device using ar71xx-ehci and address 3
Jun 12 17:29:16 WRT160NL user.info kernel: usb 1-1: configuration #1 chosen from 1 choice
Jun 12 17:29:16 WRT160NL user.info kernel: option 1-1:1.0: GSM modem (1-port) converter detected
Jun 12 17:29:16 WRT160NL user.info kernel: usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
Jun 12 17:29:16 WRT160NL user.info kernel: option 1-1:1.1: GSM modem (1-port) converter detected
Jun 12 17:29:16 WRT160NL user.info kernel: usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
Jun 12 17:29:16 WRT160NL user.info kernel: option 1-1:1.2: GSM modem (1-port) converter detected
Jun 12 17:29:16 WRT160NL user.info kernel: usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
Jun 12 17:29:16 WRT160NL user.info kernel: scsi3 : SCSI emulation for USB Mass Storage devices
Jun 12 17:29:16 WRT160NL user.debug kernel: usb-storage: device found at 3
Jun 12 17:29:16 WRT160NL user.debug kernel: usb-storage: waiting for device to settle before scanning
Jun 12 17:29:16 WRT160NL user.info kernel: scsi4 : SCSI emulation for USB Mass Storage devices
Jun 12 17:29:16 WRT160NL user.debug kernel: usb-storage: device found at 3
Jun 12 17:29:16 WRT160NL user.debug kernel: usb-storage: waiting for device to settle before scanning
Jun 12 17:29:21 WRT160NL user.notice kernel: scsi 3:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
Jun 12 17:29:21 WRT160NL user.debug kernel: usb-storage: device scan complete
Jun 12 17:29:21 WRT160NL user.notice kernel: scsi 4:0:0:0: Direct-Access     HUAWEI   SD Storage       2.31 PQ: 0 ANSI: 2
Jun 12 17:29:21 WRT160NL user.notice kernel: sd 4:0:0:0: [sda] Attached SCSI removable disk
Jun 12 17:29:21 WRT160NL user.debug kernel: usb-storage: device scan complete
 

 

Using it

To start using your new configuration:

root@WRT160NL:~# ifup ppp0
SIM ready
PIN set successfully

And now ping a host on Internet

root@WRT160NL:~# ping ftp.sunet.se
PING ftp.sunet.se (194.71.11.69): 56 data bytes
64 bytes from 194.71.11.69: seq=0 ttl=55 time=119.351 ms
64 bytes from 194.71.11.69: seq=1 ttl=55 time=88.978 ms
64 bytes from 194.71.11.69: seq=2 ttl=55 time=88.751 ms
64 bytes from 194.71.11.69: seq=3 ttl=55 time=88.484 ms
64 bytes from 194.71.11.69: seq=4 ttl=55 time=128.257 ms
^C
--- ftp.sunet.se ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 88.484/102.764/128.257 ms
 

Stop your connection:

root@WRT160NL:~# ifdown ppp0

 

Useful links

 

Share

25 Responses to “Howto use 3G dongle Huawei E1750 in OpenWrt”

  1. Mutte Says:

    I can’t download usb-switch.
    I have tried to update oplg with no success. Any ideas?

  2. peter Says:

    I do not understand “update oplg”?

    You must have a working internet connection for yor OpenWrt router and must be able to run:
    opkg update

    If that does not work, google is your friend.

  3. Mutte Says:

    Hi
    Sorry about the miss-spelling, my keyboard must have a virus ;) .

    My Router have a working internet connection. But there is no usb-switch download. Do you have any other link?

    Log:

    root@OpenWrt:~# opkg update
    Downloading http://downloads.openwrt.org/backfire/10.03/brcm47xx/packages/Packages.gz.
    Inflating http://downloads.openwrt.org/backfire/10.03/brcm47xx/packages/Packages.gz.
    Updated list of available packages in /var/opkg-lists/packages.
    root@OpenWrt:~# opkg install usb-swtitch
    Collected errors:
    * opkg_install_cmd: Cannot install package usb-swtitch.
    root@OpenWrt:~#

    /Mutte

  4. peter Says:

    try:
    opkg install usb-switch

    Not
    opkg install usb-swtitch

  5. Mutte Says:

    Sorry, but it give me the same problem. Now I have double-checked the spelling.
    Do you have any binary package link?

    Log:

    root@OpenWrt:~# opkg update
    Downloading http://downloads.openwrt.org/backfire/10.03/brcm47xx/packages/Packages.gz.
    Inflating http://downloads.openwrt.org/backfire/10.03/brcm47xx/packages/Packages.gz.
    Updated list of available packages in /var/opkg-lists/packages.
    root@OpenWrt:~# opkg install usb-switch
    Collected errors:
    * opkg_install_cmd: Cannot install package usb-switch.

  6. peter Says:

    oups, try
    opkg install usb-modeswitch

  7. grqq Says:

    I have a problem. Everything works fine but every time I reboot the device a have to type usb_modeswitch and ifup ppp0 to enable the Internet connection. Is there any way to avoid this and enable this commands automatticly? Please help me.

  8. peter Says:

    Well, It is linux and very flexible so please feel free to implement it. I have not done it because it has not been painfull enough to not have this feature. But a simple startup script should fix it.

  9. grqq Says:

    I’m pretty much linux noob so how I can make this startup script? Can You provide me any examples?

  10. Mutte Says:

    usb-modeswitch is working.

    Thanks!

  11. peter Says:

    @qrqq: Yes, my consultant fee is 100 EUR/h and estimate it to be approx 1 hour dev, including test and documentation.

  12. peter Says:

    @Mutte: No problem, sorry about the typo.

  13. Mutte Says:

    Everything is working now, but I will be back with a automatically start-up script (I hope).

  14. Mutte Says:

    To create a start-up script (I prefer nano):

    Simply edit /etc/rc.local

    # Put your custom commands here that should be executed once
    # the system init finished. By default this file does nothing.

    usb_modeswitch
    sleep 30
    ifup ppp0

    exit 0

  15. grqq Says:

    Thanks everything is working fine now.

  16. Stephan's pieces of wisdom » Blog Archive » Installieren eines UMTS Modems ( Huawei e220) auf einem WRT160nl und Openwrt(Teil 3) Says:

    [...] Quellen http://www.it-slav.net/blogs/2010/06/12/howto-use-3g-dongle-huawei-e1750-in-openwrt/ http://josefsson.org/openwrt/dongle.html posted by Stephan in Linux, Netzwerk, openwrt and have [...]

  17. Luca G. Says:

    Whenever I tried to run usb_modeswitch I got the error msg:

    “no MessageEndpoint given. Can’t send message. Aborting”

    I solved the problem by adding the line:

    MessageEndpoint=0×01

    to /etc/usb_modeswitch.conf

    Thanks for your howto!

  18. Luca Gibelli » Huawei E1750 3G USB modem on OpenWRT Kamikaze Says:

    [...] Credits: Peter Andersson [...]

  19. codetypo Says:

    hi I am tring to follow this tutorial using franklin wireless u600 3g/4g modem.
    but i get this message

    usb.c: new USB bus registered, assigned bus number 1
    ehci_hcd 00:03.1: illegal capability!
    ehci_hcd 00:03.1: USB 0.0 enabled, EHCI 1.00, driver 2003-Dec-29/2.4
    hub.c: USB hub found
    hub.c: 2 ports detected
    ip_conntrack version 2.1 (5953 buckets, 5953 max) – 352 bytes per conntrack
    hub.c: new USB device 00:03.1-1, assigned address 2
    hub.c: USB hub found
    hub.c: 2 ports detected
    hub.c: new USB device 00:03.1-1.2, assigned address 3
    hub.c: USB hub found
    hub.c: 4 ports detected
    hub.c: new USB device 00:03.1-1.2.2, assigned address 4
    usb.c: USB device 4 (vend/prod 0x1fac/0×150) is not claimed by any active driver
    .
    uhci.c: USB Universal Host Controller Interface driver v1.1
    usb.c: registered new driver acm
    acm.c: v0.21:USB Abstract Control Model driver for USB modems and ISDN adapters
    usb.c: registered new driver serial
    usbserial.c: USB Serial support registered for Generic
    usbserial.c: USB Serial Driver core v1.4

  20. peter Says:

    I cannot tell anything out of this small piece of information.

  21. codetypo Says:

    Hi I am tring to install my u600 modem .How can i modify the steps or code for this to work?

  22. peter Says:

    If you give me a modem I can try to get it running and tell you how.

  23. codetypo Says:

    I am configuring my franklin wireless u600 modem to work on openwrt.
    The set up is as follows:

    I configured the prod/vendor id :

    /etc/modules.d/60-usb-serial
    [code]root@OpenWrt:/etc# vi modules.d/60-usb-serial
    usbserial vendor=0x1fac product=0x150
    [/code]

    Next using the configurations in the devices txt, I entered the following in usb-modeswitch.conf:
    [code]
    ########################################################
    # Franklin Wireless U210
    #
    # Contributor: Adam J. Porter

    DefaultVendor= 0x1fac
    DefaultProduct=0x0150

    TargetVendor= 0x1fac
    TargetProduct= 0x0151

    CheckSuccess=20

    MessageContent="555342431234567824000000800108df200000000000000000000000000000"

    ##############################################################
    [/code]
    (This was the only one to match my modem.So changed the default product to 0×0150 as this is what it showed up as -dmesg)

    After I entered to following network configurations:
    [code]
    config interface wan
    option proto '3g'
    option service 'cdma'
    option 'device' '/dev/ttyUSB0'
    option apn 'internet'

    [/code]

    After I rebooted the router and entered the usb_modeswitch command:

    [code]
    root@OpenWrt:/etc# usb_modeswitch

    Looking for target devices ...
    No devices in target mode or class found
    Looking for default devices ...
    Found default devices (1)
    Accessing device 004 on bus 001 ...
    Using endpoints 0x08 (out) and 0x87 (in)
    Inquiring device details; driver will be detached ...
    Looking for active driver ...
    No driver found. Either detached before or never attached

    SCSI inquiry data (for identification)
    -------------------------
    Vendor String: Franklin
    Model String: Auto-Installer
    Revision String: 2.31
    -------------------------

    USB description data (for identification)
    -------------------------
    Manufacturer: Franklin Wireless Corp.
    Product: USB Micro SD Storage
    Serial No.: 216169176500
    -------------------------
    Setting up communication with interface 0 ...
    Trying to send the message to endpoint 0x08 ...
    OK, message successfully sent

    Checking for mode switch (max. 20 times, once per second) ...
    Waiting for original device to vanish ...
    Original device can't be accessed anymore. Good.
    Searching for target devices ...
    Searching for target devices ...
    Searching for target devices ...
    Searching for target devices ...
    Searching for target devices ...
    Searching for target devices ...
    Searching for target devices ...
    Found correct target device

    Mode switch succeeded. Bye.
    [/code]

    I then did a dmesg and the follwoing showed up saying that usb_modeswitch did not claim the device (vend/prod 0x1fac/0×151)
    Also I believe the (vend/prod 0x198f/0×220) is the wimax part.But not concerned with that at the momment.
    $dmesg
    [code]
    .......usbserial.c: Generic converter now disconnected from ttyUSB0
    usbdevfs: process 555 (usb_modeswitch) did not claim interface 0 before use
    usb.c: USB disconnect on device 00:03.1-1.1.2 address 4
    hub.c: new USB device 00:03.1-1.1.1, assigned address 5
    usb.c: USB device 5 (vend/prod 0x198f/0x220) is not claimed by any active driver.
    hub.c: new USB device 00:03.1-1.1.2, assigned address 6
    usb.c: USB device 6 (vend/prod 0x1fac/0x151) is not claimed by any active driver.
    [/code]

    Maybe this is the wring prod/vendor ids but can you tell me how the fix this thanks.

  24. peter Says:

    Does it work with Ubuntu?
    If yes, do as I, copy the config files from there.
    If no, then I do not have a clue without having the device myself.

  25. HJ Says:

    Hi
    I'm following this guide to the letter, but when I restart the firewall I get
     
        /etc/rc.common: eval: line 1: scan_ppp: not found
        /etc/rc.common: eval: line 1: scan_ppp: not found
        /etc/rc.common: eval: line 1: scan_ppp: not found
        /etc/rc.common: eval: line 1: scan_ppp: not found
        Loading defaults
        Loading synflood protection
        Adding custom chains
        Loading zones
       … and more lines.
     
    Do you know how to get scan_ppp up and running?

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