AW: [PATCH v2] bearer-mbim: use the context IP type MM asked to be activated instead of modem response

Thomas Schäfer tschaefer at t-online.de
Tue Jun 21 20:28:11 UTC 2016


Am Dienstag, 21. Juni 2016, 20:01:16 schrieb Thomas Lang:
> Hi,
> perhaps i can bring a good explanation for the long ping. Are you using LTE
> as a radio access network? If so it could be normal you get a first long
> ping coz in LTE the power management could put you in a "power save mode"
> it takes a bit of time to get all the  radio resource to use the data
> connection after you have the radio resources the latency is not an issue
> any more.
> If you need a bit more infos let me know.

I don't think, that the radio part is the reason. Because:

the IPv4-ping works without delay
the IPv6-ping works delayed, despite I started it after a working IPv4-ping

Windows 10 doesn't have this problem

other modems don't have this problem (qmi), these modems don't have this 
problem in none-mbim-mode. (Linux/Windows 7)

I think it could be something ugly within the firmware or the kernel-driver, 
but I am not an expert, just a tester.

Regards,
Thomas


PS: What does mean  gateway "::"?
 with qmi-modems I get there a normal address.







More information about the ModemManager-devel mailing list