Ublox TOBY-L2 series, User Manual

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EVK-L2 - User Guide
UBX-14000422 - R10 Appendix
Page 25 of 30
D Optimal throughput
To reach the highest throughput use one of these interfaces, which are listed with most optimal first:

the RNDIS interface

the CDC-ECM interface

the CDC-ACM interface
The configuration can be set by means of the +UUSBCONF AT command (see the u-blox AT Commands
Manual [1]).
On a Linux OS to reach the highest throughput through the RNDIS, it is necessary to recompile the kernel.
Apply the following modification in
/kernel/drivers/net/usb/usbnet.c
:
replace "
size_t size = dev->rx_urb_size;
" with "
size_t size = (16*1024);
"
If it is not possible to recompile the kernel, try to use the following command:
AT+UDCONF=67,0
This command disables the RNDIS driver optimization and could mitigate the effects in router mode only.