We have installed a RUTX50 router at a site where the number of client devices varies between 30 and 50. The WAN connection is provided through a 1 Gbit/s 5G service.
The device operates normally for some time after being restarted, but after a while problems begin to appear.
A switch is connected to the LAN port, and there are 7 Wi‑Fi access points connected to the switch (bridged mode). Through our management portal, we can monitor the access point statistics and run ping tests to selected destinations.
The RUTX50 itself responds normally to ping requests with approximately 1 ms latency. However, when pinging external destinations such as 8.8.8.8, latency becomes very high and packet loss reaches 40–70%.
I have tried restarting only the 5G connection on the RUTX50, but that does not resolve the issue. Only a full reboot of the router restores normal connectivity, after which everything starts working properly again.
The firmware has been updated to the latest version. According to the 5G statistics, the signal strength is good to excellent. During the issue, a ping to 8.8.8.8 initiated directly from the RUTX50 web interface works normally.
Any advice would be greatly appreciated. Has anyone encountered a similar issue? If so, was it resolved, and what was the root cause?
To help narrow down the cause, could you provide the following the next time the issue occurs? Ideally capture this before rebooting, since a reboot will reset most of the values below.
Exact firmware version installed (Status → System page, e.g. RUTX_R_00.07.xx.x)
Active connection count vs. limit, via CLI: cat /proc/sys/net/netfilter/nf_conntrack_count cat /proc/sys/net/netfilter/nf_conntrack_max
Whether the system log shows any “table full, dropping packet” entries during the issue (System → Maintenance → Events Log, or logread | grep -i conntrack via CLI)
CPU load and active connection count at the time of the issue, from Status → Realtime Data → Load / Connections
Current flow offloading configuration, via CLI (works regardless of firmware/WebUI version): uci show firewall | grep -i flow_offloading
Roughly how long after a reboot the issue tends to start (minutes / hours / days)
General type of traffic the connected devices generate - e.g. regular browsing, video/streaming, frequent short-lived connections from IoT or polling devices, etc.
Whether any QoS/SQM, Multi-WAN (mwan3), or VPN services are active on the device
One note: please refrain for posting any personal information such as public IP addresses, device’s serial number, MAC address, etc. Since the forum is public.
Looking forward to your reply so we can dig further into this.