Problem with RT-AC5300 ASUS Router

May 18, 2018
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Hello, I am having trouble getting my RT-AC5300 ASUS router to work.

I have it plugged into my modem and there is no wireless signal. I have tried using a wired connection and I get assigned a 169 ip. I have tried disabling IPv6 and setting my IP address to 192.168.1.111, mask 255.255.255.0 gateway 192.168.1.1, dns 8.8.8.8 and 8.8.4.4, still I have had no luck connecting to the internet through the router.

I have confirmed that I have internet when I plug my laptop directly into the modem. And I have done soft and hard resets for all three devices numerous times.

In general my router is acting weird and I am unable to configure it, even aside from being unable to connect to the internet. When I plug it in and turn it on, the power light comes on, but when I plug the ethernet cable from the modem into the router the WAN doesn't come on (sometimes it does for a second, the power light goes off, and then the WAN light goes off and the power light comes back on, if that's significant). Further, when I plug an ethernet cable from my router to my computer, the LAN light does not come on, and as mentioned I get assigned a 169 IP address. I haven't figured out a way to factory reset the router, doesn't seem to be anything in the user manual, but I have pushed/held the reset button many times.

At this point I have no idea what the problem is so if anyone has any ideas I would love some help.

I am currently trying to restore the firmware with ASUS's restoration/resuce mode tool. But am having further difficulties there. First of all, if I just plug the laptop straight into the router, the application tells me that the router is not in rescue mode, despite the power light slowly flashing. So far the only way I've gotten the program to reliably detect the router is to plug in my laptop to my modem, let it set my configuration, and then plug in my router while it's in rescue mode. The program then starts uploading the firmware, and the light on my router stops blinking (it stalls in whatever state it was on when the upload started) and then around 40% (but never at the same place, it has stopped at 17% and as high as 42%, but most commonly at 40%) the upload stops, the program tells me it's lost connection to the router, and the router's power light goes off if it was on and then comes on implicating to me that it cycle'd itself and is no longer in rescue mode.

This leads me to some weird conclusions that I have no idea if they have any merit. It would seem to me that my modem is configuring my ethernet port in such a manner that is compatible with my router, and then my router starts updating and re-configures my computer to no longer be compatible with it?

I have tried copying the configuration my modem gives me and using it manually, but that hasn't seemed to work for me.

For the record, this modem worked about a year ago (when it was new) but hasn't been used since, I suppose it's possible it died on the shelf but that would be a bit surprising to me?

Any ideas or suggestions are greatly appreciated!

Thank you for your time.
 
Solution
I was able to finally solve this by playing around more with the solution I was actively trying: reloading the firmware. Apparently I was copying my modem's configuration settings wrong, and doing it correctly solved the problem.

For anyone else having this issue I'll put all of my details, but it's possible you will have a different unique scenario.

I plugged my modem in and ran ipconfig /all and then set my configuration manually to match what my modem gave me. Just in case it's helpful to someone in the future the specific configuration that I used that worked for me was this:

IPv4: 104.228.223.126
Subnet Mask: 255.255.250.0
Default Gateway: 104.228.208.1
Primary DNS: 209.18.47.62
Secondary DNS: 209.18.47.61

Also, my IPv6 was...
May 18, 2018
2
0
20
I was able to finally solve this by playing around more with the solution I was actively trying: reloading the firmware. Apparently I was copying my modem's configuration settings wrong, and doing it correctly solved the problem.

For anyone else having this issue I'll put all of my details, but it's possible you will have a different unique scenario.

I plugged my modem in and ran ipconfig /all and then set my configuration manually to match what my modem gave me. Just in case it's helpful to someone in the future the specific configuration that I used that worked for me was this:

IPv4: 104.228.223.126
Subnet Mask: 255.255.250.0
Default Gateway: 104.228.208.1
Primary DNS: 209.18.47.62
Secondary DNS: 209.18.47.61

Also, my IPv6 was disabled, if that matters at all.

With these settings, I plugged my laptop into my router and ran the ASUS repair tool with the latest firmware version and my router in recovery mode. After the firmware finished uploading and the router restarted, everything was working exactly as it should!

Hope this helps someone in the future with my woes, I spent too much time rebooting everything and plugging this into that in this order to figure out what was wrong.
 
Solution