No Internet on Linksys EA7300 v2

Installing and Using OpenWrt
1

Hello,
has anybody successfully installed and using OpenWRT on Linksys EA7300, hardw.ver. 2 ? And does it work normally?

I was perfectly able to install OpenWRT, even enabled SSH, all good.
BUT - the big problem - I could not get the Internet connection.

My ISP provides me with static IP and limits the connection by MAC address.
I've set it on the port (I think it was eth0 or similar) - and on Rx (received packets) it started receiving, it quickly accumulated data, indicating that the Internet is allowed through the port on the device.
BUT - on WAN - no Internet.

Even the router itself doesn't have Internet, as the diagnostic tools (ping) are unsuccessful.

To me looks like some OpenWRT incompatibility with the router - the router cannot route. I could be wrong about that, of course, that is why I decided to come in the forum to ask for help.

I have another old router (tp-link), that is also configured for my ISP - I was wondering, maybe I should try again , but use the Linksys AFTER the old router, to eliminate the MAC address limitation as possible issue?

Another question - do I have to somehow combine the port (eth0) with the interface (wan) in OpenWRT, or that is not required for the Internet to work? Does OpenWRT automatically route traffic, or I have to build some logic in the interface (i..e to tell it which device port (wan/lan) goes where etc?
Sorry for this dump question, but this is the first time for me on OpenWRT.

Any advice is appreciated.
Thank you.

EDIT: one more question - As OpenWRT was showing MAC Addresses on everything - i.e. everything has it own MAC - eth0, wan, wan6, etc.
The cloned MAC should be set only on eth0 or also on WAN?
(anyway, I've tried both but there was still no Internet, but I'm asking to know, when making a new attempt)

2

Did you clone the old MAC address to the EA7300v2?

If not you can first try the following:

Power down ISP Modem and power down EA7300
Wait 30 sec
Power up ISP modem
Wait 5 min
Power up EA7300

Some ISP modems can learn a new MAC address by doing this sequence of power down/up

3

In my case there is no modem. All I have is a UDP (lan) cable, coming into my appartment, it comes through the building's wiring and goes down, then underground. I suppose there is a router somewhere on the way, but the immediate connection on the other side is just a "dump" switch device, that is locked behind a provider's metal box, and I am not supposed to touch there.

so, I have the cable only.

But no issues with any stock firmware router so far - the moment you set the correct mac, there is Internet, no problem.

4

Yes to both questions.
You clearly have a misconfiguratin on the WAN port. In your case you are using the router behind another one. You may have IP ranges issues. What are the working parameters (MAC, IP, IP range) from the old tp-link router?

Triple routing? No way, forget this.

5

And what would be the proper way to configure the WAN?
At the moment the router is not behind another one, it is directly connected to the ISP's cable.

The tp-link was just an idea, I haven't tried the Linksys with the tp-link.
All of my attempts were made with the Linksys directly attached to the ISP cable on its WAN.

My network settings can work 2 ways - configured to obtain via DHCP or as Static configuration, both should work with my ISP.

6

I know these, I have the IP, the subnet mask (it ends in .248) and gateway (the gateway ends in the same subnet, ending in .1
I also have the working mac, I know it.
I just don't want to post my info for privacy, but if I have to do some config manually I can do that, no problem. I can even ssh to the router and use vi - I have no problem to do that either.

I just need to know on principal level, what is the limiting factor, the issue that is not allowing me to have Internet?

7

If it is a public IP address you should not disclose it but you can safely show RFC1918 address.

If you share the following output we might see something amiss:

Please connect to your OpenWRT device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button:

Remember to redact passwords, MAC addresses and any public IP addresses you may have:

ubus call system board
cat /etc/config/network
cat /etc/config/dhcp
cat /etc/config/firewall
ip ro

P.S. have to do other things so will not be available for some time

8

So I would assume that you will only need to copy/paste MAC adress, IP, mask and gateway from the working tp-link. In fact your new router will mimic the old one. May be a missing VLAN?

9

Yes, that is how I've set it up, but there is no Internet connection.
There are no VLANs specifically configured. If I need one mandatory in order to have Internet, please clarify?

Other than that, when I give it a new try I will post back again.

10

Ok so you have done what seems obvious.

Some providers require a VLAN for WAN. This is a technical choice from your ISP. So I can't tell if you need one or not.
As requested previously, post your settings (redacted), and those from the tp-link to compare.