i have a shelly I4DC connect via wifi to a RUT241.
The connection to the shelly cloud is unstable, sometimes it works for a day. Then it keeps resetting every 5 seconds. Below is the output on the shelly diagnostics, on my home network the shelly is connecting to the cloud without any issue.
I already checked a lot of configuration option in the teltonika but cannot pinpoint where the problem is situated, are their any ideas about which settings might influence the connectivty to the shelly cloud?
To confirm, is the initially described issue of unstable Shelly I4DC connection still noticeable? Can you confirm if your RUT241 has a stable internet connection throughout the day and during the mentioned cloud connection disruptions? Additionally, could you verify whether the Wi-Fi signal strength between the Shelly device and the router remains stable during these disruptions?
It would also be helpful to check if there’s any packet loss when pinging the Shelly IP from the router. If there is, you might want to try changing to a less congested 2.4 GHz channel, as an overcrowded wireless environment could cause instability, especially if there are other wireless networks nearby.
For further testing, you can also try the following:
Try reducing the MTU size to e.g., 1400 or lower on WLAN (ifconfig wlan0 mtu 1400)
Try adding the following settings to the /etc/sysctl.d/10-default.conf that might help improve stability:
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_intvl = 60
net.ipv4.tcp_keepalive_probes = 5
Check if there’s a “Keep Alive” option in the Shelly app settings and ensure it is enabled.
Also, if your RUT241 has an older firmware version installed, make sure to update it to the latest 7.13.3 release.