GL7x00 linux interface

IoT Gateways GL Series
1

Hello,
I’m trying to a computer running ubuntu to the internet via a GL7600 (and later a GL7500) connected via microusb.

The GL is recognized in lsusb, it creates interfaces wwan{0,1,2,3} in ip a and ModemManager can interact with it, even managing to conect to the LTE network (with mmcli -m 1 --simple-connect="apn=gprs.swisscom.ch,user=gprs,password=gprs").
However, I cannot access the internet as:

  • the modem doesn’t show up in NetworkManager
  • the wwanX interfaces cannot be brought UP
  • the /dev/cdc-ncm file is not present.

I’d like to connect to it with some high speed protocol like NCM or MBIM in order to benefit from the LTE bandwidth, not as a serial modem.

Where can one find guidance on GL usage under linux?

Thank you,
Simon

2

Hi,
The user guide is here:
https://source.sierrawireless.com/resources/airprime/application_notes_and_code_samples/airprime_hl75xx_network_interface_configuration_technical_note/#sthash.sFzXYqHB.dpbs
By default, KUSBCOMP =0, there are 4 NCM interfaces.
If you want to use MBIM interface, change KUSBCOMP=2

Hope it can help.
Thanks,