On Wed, Jul 6, 2022 at 10:03 AM Sven Schwermer via networkmanager-list <
networkmanager-list@gnome.org> wrote:

> Hi,
> I have a device with cellular modem running a Linux-based OS with
> ModemManager/NetworkManager used for the connectivity management.
> Occasionally, the cellular connection breaks and it takes several
> connection attempts until the connection can be established again.
> Currently, we have autoconnect-retries=0 for our cellular connection so
> there are infinite retries. This, however, can cause significant system
> load if the ModemManager connect (dbus) calls fail immediately which
> occasionally happens.
> As far as I understand, NetworkManager will attempt a new autoconnection
> attempt right away after the previous attempt failed. The only way of
> slowing this down is to set autoconnect-retries=1 which will cause
> NetworkManager to wait for 5 minutes between attempts. This wait
> duration seems to be fixed.
> Is there a way to make NetworkManager perform a backoff (e.g. linear or
> exponential) between connection attempts? Are there any other ways to
> guarantee that the cellular modem is "always connected" without having
> NetworkManager to loop like crazy when a (re-)connection attempt fails?
> Thanks and best regards,
> Sven

Sounds like a device that is going to be remotely controlled over LTE / GSM
/ CDMA..  If it is unreachable, what does it matter until it comes back
up?  You will not get to it anyhow :)
networkmanager-list mailing list

Reply via email to