Problem with Dumb AP mode and impossible reset modem

Installing and Using OpenWrt
1

Modem: TP-Link TL- MR3020 / Driver: 17.01.5 / OS: Debian 9

Hi, i tried config my modem on Dumb AP mode, but i did the wrong things. I followed the official guide.

I do:

  • Select the checkbox "Ignore interface: Disable DHCP for this interface".

I don't:

  • Set an IP
  • Disable Firewall

Well, the thing no work and i tried return to defaults setting ... but now I can't access to Luci, my modem isn't recognize. And the BIG problem: I can't reset my modem, cuz I din't enable theReset Functionality of my modem, so it's impossible use the reset button.

Question: How to recovery my modem?

2

Try find it on network thru ipv6

3

Thanks, but i use Debian.

4

It was a link with generic instruction for various OS, buy anyway

https://manpages.debian.org/stretch/iproute2/ip.8.en.html

$ ip neighbour

5

well, i type ip neighbour and show me a list of ports (?):

192.168.0.22 dev wlp3s0 lladdr 50:85:69:8e:68:0f STALE
192.168.0.254 dev wlp3s0 FAILED
192.168.0.36 dev wlp3s0 FAILED
192.168.0.3 dev wlp3s0 lladdr 74:54:7d:e4:78:39 REACHABLE

Really the code show more entries, various STALE that don't work, and only REACHABLE that is my other modem.

6

Any chance you can test with an Ethernet cable connected directly between your PC and the modem

7

Configure static IP in the same subnet and try to ping the modem.

8

Excuse me @vgaetera but I'm newbie. How to know what is the same subnet number? and How to ping the modem?

9

You're going to have a very difficult time configuring your router without this knowledge.

Subnetting:

Ping:

10

Don't spook us like that :slight_smile:

https://en.m.wikipedia.org/wiki/Subnetwork

1 Like
11

Better post for a basic understanding!

:+1:

12

Well. I set for wire connect a static IP. I connect my latop to principal modem and my MR3020 too:

Latptop ---- cable --> Principal Modem <--cable--- MR3020

Then, i type ip neighbour command and out only info about ports of principal modem.

13

Latptop <----cable---> MR3020

14

With this scheme: Latptop <---cable---> MR3020
Command: ip neighbour
Out:

192.168.0.2 dev enp12s0 FAILED
fe80::1ad6:c7ff:fe43:365l dev enp12s0 lladdr 18:d6:c7:43:35:9c router REACHABLE

---UPDATE---
I install net-tools and use arp -a:

? (192.168.0.2) at < incomplete > on enp12s0

15

Ignore IPv4
Use the IPv6 address ip neighbour displays for router

fe80::1ad6:c7ff:fe43:3651

http://[fe80::1ad6:c7ff:fe43:3651]

1 Like
16

Nothing happens. White screen on Firefox 62

17

Try SSH with the same ipv6 addr

18

Weee! I can connect to my MR3020 modem via ssh.

But is neccesary add the name of net card, on terminal (more info):

ssh root@IPv6%net_card

ssh root@fe80::1ad6:c7ff:fe43:3651%enp12

And prompt appear and you input your password.

Now, I must rest the modem via terminal?

1 Like
19

You can either try to fix the configuration through UCI or just reset it:

1 Like
20

Thank you very much @vgaetera, I've followed that guide and I've restarted my modem and PC, and now I recovery LUCI.
Regards.

1 Like