I have two RUT240 routers here both not really usable and I'm running out of ideas. They were purchased independently and with several weeks or months in between purchases.
Both are not reliably reachable via the lan interface. This is using the default ip 192.168.1.1 and also when using other ip addresses.
Symptoms are: After booting I can access the web ui from lan, after a few minutes lan ip isn't reachable any more (no ping, no web ui, no ssh). Reboot mostly fixes this.
Using the wifi interface I can still reach those devices even when they're not reachable via lan interface.
I did try:
- flashing different firmware versions (00.01.14.6, 00.07.01.4, 00.07.02.7) (using the web interface, and also the recovery boot mode)
- factory reset the devices countless times (via web ui, if possible, and via the reset button > 5s)
Often times I'm not even getting a DHCP lease on the lan interface. Giving a connected device like a laptop a fixed ip address in the correct lan network range still doesn't allow communication then. If reading the arp table of the devices via wifi in this state, the mac addresses show all zeros like after trying to ping a connected lan device with fixed ip from the routers' CLI.
Packet forwarding between wifi and lan is not working. Examples: I connected two laptops for testing, one via lan / ethernet, the other via wifi. Both devices have fixed ip addresses. Running wireshark on both and trying to ping from one to the other shows that arp requests and responses are not flowing correctly between the two devices.
There seems to be a general stability and/or layer 2 problem with those devices?
Other strange things include problems with changing the default password after a factory reset. This has been described somewhere else here in the forum, too: You have to change the default password, which seems to succeed. But you cannot login with the new password afterwards. you CAN still log in with the factory default password.
Seems like a problem with writing to the flash/overlay file system?
I've spent over 8 hours now trying to get these very basic things to work correctly, and with over 25 years of linux / network background I should be able to do this?! I would never rule out stupidity on my side, but I'm really running out of ideas here...
I would urgently need to put those into operation, and they would only be the first two prototypes. Actual usage would be providing a mobile uplink to a connected ip camera and creating a vpn to our datacenter (might be l2tp, openvpn, ...). So nothing really special.
Right now I'm wondering, if our current path (switching to Teltonika from a different vendor because of stability problems there) is a wise move...
So, to conclude: What can I do to make those routers do even the most basic things?
Do you need any more information I can provide?
Christian
