Multiple PDN with libqmi/ModemManager?

[Martin Anderseck]

> The MC7710 can be configured to expose 3 QMI ports.  You can find
> instructions on how to do that hidden in Sierra Wireless' excellent
> AT command documentation, which I believe now is available to anyone
> registering on http://developer.sierrawireless.com/

Found it, thank you for indirectly pointing me at this. Currently I don't have multiple PDNs/bearers available for testing but next week I'll continue working on this. 

> Now I never made the 3rd port work, and quite frankly I believe there is
> a firmware bug preventing that.  The qmi_wwan driver will ignore it for
> this reason.  But the 2 first ports work fine and can be used for
> simultaneous packet network connections.

I guess we're talking about config #7, right? I only have two ports working, too, so it seems I hit the correct one :-)

> I was hoping the MBIM version of the firmware would expose the same
> capability using MBIM IP session multiplexing, but the firmware I've got
> so far does not seem to do this.  Still hoping that will improve in the
> future.  The MBIM firmware still support the 3 QMI ports when configured
> for QMI operation.

I didn't test it yet but would you consider MBIM as usable? I'm using firmware 03.05.19.04ap btw. and I can confirm that there is only one MBIM port available in the supported profiles. 

Best regards,
Martin
 
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