Problem: I have AX3000T. I successfully installed OpenWrt. I set a password for root, configured wireless 2.4 and 5, then I've connected an ethernet (cable from my ISP in my house. The same that was connected to an old router) to WAN port. After I did that, there was no internet. Also, the same problem applies to LAN devices (if that's a correct term) connected to router directly and not wireless (for example, my PC)
After I did that, I've set the interface protocol to DHCP and it kinda worked? There was an ip showing up, but no internet. After trying a few things, I've called my ethernet provider and said that I have a new router and there is no internet. They've said that they've added my new MAC address, so if there is no internet in 5 minutes the router is probably missconfigured.
At some point, I've found this section in the documentation "troubleshooting internet connectivity". It sounded perfect and it was something I haven't tried yet. So I followed the steps, at some point changed address to 192.168.2.1 and after that step everything broke....
Now I can't even connect to SSH or open luci. (I've tried both old and new ips). The wireless network still exist and I can connect to it, but it has no ethernet. And it seems like LAN devices connected to the router (my PC) don't even recognize the network anymore? Not sure. Main problem - no ethernet, can't open LUCI, can't connect to SSH. Have no idea what to do now and no idea what did I do wrong
I've tried PPPoE and it didn't work + I've checked the website for my internet provider and it says that they are using DHCP
in worst case clone old router's WAN MAC onto new router
Well, I think my ISP did everything correctly and I just did something wrong. Also, even if I somehow got my old MAC address, I still can't open luci or SSH to my new router
I've installed latest stable version (IIRC it was 25.12.4. I would check in the luci panel, but I can't do that, so that's the best answer I have ¯_(ツ)_/¯)
It could be that your router reverted to 192.168.1.1 so try that if 192.168.2.1 did not work
Like I've said - I've tried both ips (old and new one too). I've tried rebooting now and nothing happened
After the reset, I’d keep the first test very plain: one PC on a LAN port, no ISP cable connected yet, and let the PC get a fresh DHCP lease. If LuCI comes back at 192.168.1.1, then set only the WAN side to DHCP/clone MAC if needed, save, and test before changing the LAN address again. Changing LAN to 192.168.2.1 is fine, but your PC also has to renew into that subnet or it will look like LuCI/SSH disappeared.
Ok, so I reset my router. Did the exact same steps (set a root password --> configured wireless networks --> inserted my internet cable) and it worked 0_o. I haven't done anything differently. I did the exact same steps, but this time internet works and I'm writing this comment with it.
I still have no idea what happened, but good thing it works now and I can continue from here (thanks to everyone who responded to the post ^_^)
Oh, thanks! I didn't see the comment. I think I followed halfway through the steps you've described here and it worked.
Marking this as a solution. If anybody else stumbles to the same problem as I did - following this steps helped me (well, sort of. It just magically worked by itself, I still have no idea how/why...)
Uhh....I'm not sure if I'm following here. If you're talking about the network-->interface tab then there was no manual DHCP option (maybe in the advanced settings, but I haven't messed with it), the only option is "DHCP client" (+ DHCP6) and it works automatically. The only manual thing I've tried was PPPoE where I had to enter my login and password, but my internet provider uses DHCP, so I changed it to DHCP after I've realized that.
If you're talking about a DHCP server tab/thingy I know you can manually edit it, but I didn't.
*clears throat...
Asking for friends.
In any case - the problem was magically solved. Thanks for replying
If there is anything I can do that would clear things up (or help as well?) - feel free to ask
It is often the case you have to reset the ISP/Telco modem because it learns the mac address of the one device it talks to and if you change that one device to something else, it has to wait for its arp table to timeout (could be 5 minutes, could be much longer). Quickest thing when changing out equipment is to reset the telco modem.
When you first log into the router, it is not assigning ip address; so you need to manually set a terminal/client in the same range.
Then, you can stay with the manual set up, if you move the router to the client range.
But, usually:
firstboot
tinker to settings you like and enable DHCP
reboot
If you did not put the terminal/client in Automatic, and/or not reserved the address in the router, the router does not know of you and will, happily, assign your manual entry (this is epically true first boot because OpenWrt is smart enough to notice a stowaway, eventually) to the clients asking...
You, did not need to do that?
You will have intermittent issues, and pull your hair out trying to find out why.
