Losing connection often

mjaggard · January 15, 2025, 8:59am

I've got OpenWRT 23.05.5 installed on 3 BT Home Hub 5A devices and have been using them for some time with no issues. I've just changed my broadband provider and made the relevant changes the setup (specifically changing the addresses from 192.168.0.x to 192.168.55.x) and it works as expected with one exception. About once a day on average (but I can't see any pattern to it) I lose connection to my OpenWRT routers plus the routers that are connected to them - so the hub/bridge inside the OpenWRT router also stops routing any traffic. I've tried switching two of the routers to see if that helped and I've tried switching the ports I'm using. I've also tried un-bridging the WAN port but none of these have helped.

In addition, I see two behaviours - sometimes the connetion just comes back without intervention but most of the time I need to restart the router to re-establish the connection.

I'm very happy working with linux tools on the command line so happy to undertake troubleshooting steps but I'm not sure where to look.

mjaggard · January 15, 2025, 9:01am

ICMP drop rates over 2 hours and 1 day as viewed from collectd-mod-ping on the OpenWRT router which is directly connected to the main ISP provided router I'm using.

wilsonyan · January 15, 2025, 9:57am

related ?

github.com/openwrt/openwrt

BT Home Hub 5A once a day LAN ports are completely off

opened 03:37PM - 15 May 24 UTC

monsoft

target/lantiq bug release/23.05 Official Image

### Describe the bug Few weeks ago I switched from version 22.03.6 to 23.05.3… and all was working fine until this Monday, when all my devices connected to LAN ports goes completely off. Yesterday I had this same situation, and today as well. Devices connected to wifi are working, but connected to LAN not. There is completely no errors in syslog or kernel log files what can point me to anything. I was checking if this could be bridge issue related to changing ports state from forwarding to blocking, but no, all used LAN ports are in forwarding state. I can't do much except to reboot router, and this are resolving issue. I'm thinking to do router configuration wipe, and configure it again (a lot of things to configure) or if this will not help, I will try to back to previous system 22.03.6. Is there anything what could be done, to try to figure out what causing this issue ? ### OpenWrt version r23809-234f1a2efa ### OpenWrt release 23.05.3 ### OpenWrt target/subtarget lantiq/xrx200 ### Device BT Home Hub 5A ### Image kind Official downloaded image ### Steps to reproduce _No response_ ### Actual behaviour _No response_ ### Expected behaviour _No response_ ### Additional info _No response_ ### Diffconfig _No response_ ### Terms - [X] I am reporting an issue for OpenWrt, not an unsupported fork.

wilsonyan · January 15, 2025, 10:00am

????

frollic · January 15, 2025, 10:01am

was something else changed, but the IPs ?

what's the reason for double NATing ?

mjaggard · January 15, 2025, 10:14am

Yes, I'll comment on that bug. It seems similar.

mjaggard · January 15, 2025, 10:17am

No other changes to my set up before I saw this issue (but I've tried changing quite a lot since!)

I'm not double NATing - I have a router provided by my ISP which runs the DHCP server - then all my OpenWRT devices are joined on to that network, do not run DHCP, and use IP addresses provided by the ISP's router. The OpenWRT devices are not acting as a router, just as a hub/switch and providing a Wifi mesh.

mjaggard · January 15, 2025, 10:20am

Is the change for "tx ring full" console messages included in any released versions of OpenWRT?

wilsonyan · January 15, 2025, 10:45am

I have no idea, ignore it I guess it probably has nothing to do with the problem you are having