Asus RT-N12 D1, ethernet issue.

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aser
DD-WRT Novice


Joined: 27 May 2019
Posts: 6

PostPosted: Mon May 27, 2019 3:40    Post subject: Asus RT-N12 D1, ethernet issue. Reply with quote
First time poster here and first time working with DD-WRT.

I have a small network at home that suffers from buffer bloat, in particular for wireless traffic. Sadly I can't replace the router given by my ISP.

I was interested in using SQM and DNS level ad blocking, so I decided to try out Open-WRT, which was successful but unfortunately the wireless component would not work due to proprietary drivers a warning that I've missed when confirming my device's compatibility with Open-WRT.

From there on I flashed DD-WRT and was unable to reach the router via ethernet. I thought that the router was bricked somehow. After a few minutes of frustration I noticed that it was broadcasting a wifi signal. I connected to wifi and I was able to communicate with the router. I finished the initial setup, then tried to connect to it via ethernet.

After extensive debugging of my laptop, I was lead to believe that the issue is not with my laptop because when I connected an ethernet coming directly from the ISP's router it worked.

TLDR: I can connect to my DD-WRT flashed router over WiFi but not over Ethernet. Thanks
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mrjcd
DD-WRT Guru


Joined: 31 Jan 2015
Posts: 5023
Location: Texas

PostPosted: Mon May 27, 2019 15:05    Post subject: Reply with quote
There is lots of info about the RT-N12 D1 in this forum if you search.
jwh7 had my good notes about installing dd-wrt on this unit in the wiki without using any Asus Firmware Restoration program mess but someone changed it.
There is a known problem with some of its ports being disabled when first install dd-wrt. Usually ports 1 & 4 get bad. I'm thinking port 4 becomes the WAN port..... but don't matter if you just reinstall same build a second time then ports are sorted out fine.
Be sure you are plugged into LAN port 2 or 3 to install.

here is a bit of old good info ---> https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1094747#1094747

The r25974 is of course and old build now and I have NO idea if new builds still work but the r25974 is a working build and at least an excellent starting place Razz
eibgrad
DD-WRT Guru


Joined: 18 Sep 2010
Posts: 8034

PostPosted: Mon May 27, 2019 17:36    Post subject: Reply with quote
I have this router, and iirc, that's the one where the port assignments are messed up, and you have to reassign them from the command line.

Code:
nvram set vlan0ports=”0 1 2 3 5*”
nvram set vlan1ports=”4 5”
nvram commit


Then reboot.

_________________
DD-WRT: DNS Leak Detection w/ VPNs (updated 6/5/19)
NEW SCRIPT!: ddwrt-mount-usb-drives.sh
NEW SCRIPT!: ddwrt-blacklist-domains.sh
NEW SCRIPT!: ddwrt-ovpn-remote-access.sh
NEW SCRIPT!: ddwrt-pptp-policy-based-routing.sh
aser
DD-WRT Novice


Joined: 27 May 2019
Posts: 6

PostPosted: Thu May 30, 2019 13:33    Post subject: Reply with quote
eibgrad wrote:
I have this router, and iirc, that's the one where the port assignments are messed up, and you have to reassign them from the command line.

Code:
nvram set vlan0ports=”0 1 2 3 5*”
nvram set vlan1ports=”4 5”
nvram commit


Then reboot.


First of all thanks for trying to help out. Unfortunately I was still unable to connect to it via Ethernet even after inputting these commands over wifi.
aser
DD-WRT Novice


Joined: 27 May 2019
Posts: 6

PostPosted: Thu May 30, 2019 14:01    Post subject: Reply with quote
mrjcd wrote:
There is lots of info about the RT-N12 D1 in this forum if you search.
jwh7 had my good notes about installing dd-wrt on this unit in the wiki without using any Asus Firmware Restoration program mess but someone changed it.
There is a known problem with some of its ports being disabled when first install dd-wrt. Usually ports 1 & 4 get bad. I'm thinking port 4 becomes the WAN port..... but don't matter if you just reinstall same build a second time then ports are sorted out fine.
Be sure you are plugged into LAN port 2 or 3 to install.

here is a bit of old good info ---> https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1094747#1094747

The r25974 is of course and old build now and I have NO idea if new builds still work but the r25974 is a working build and at least an excellent starting place Razz


Unfortunately I can't connect to it over ethernet ports 2 or 3 either. I can't connect to it over any of the ether net ports at all, tried this on two devices my PC and laptop. I tried eibgrad's suggestion for the Ethernet ports but sadly that also did not work.

After following your instructions to flash the 25974_NEWD-2_K2.6_mini successfully, I was able to connect to it over Ethernet. Though once I tried to upgrade to v24-37305_NEWD-2_K3.x_mega the same occurrence happened again. The same happened when I tried to do this process for v24-33215_NEWD-2_K3.x_mega the one suggested in the thread you linked.

So I guess the only one that worked is the oldest version out of the three the 25974_NEWD-2_K2.6_mini. :/

Thanks for your efforts by the way. If you have any further feedback I'd be glad to hear it. Smile
mrjcd
DD-WRT Guru


Joined: 31 Jan 2015
Posts: 5023
Location: Texas

PostPosted: Thu May 30, 2019 14:21    Post subject: Reply with quote
aser wrote:
So I guess the only one that worked is the oldest version out of the three the 25974_NEWD-2_K2.6_mini. :/
I assume you installed the r25974 twice like I suggested????
Can't really tell you much about newer builds but according to my old post the K3.x r33215 worked fine.

I also assume yours is in fact a RTN12D1
I remember some euro models that were labled RTN12D that would not work. I have two RTN12D1 units in the closet ---- might getem out later and see what newer dd-wrt firmware might do......... but please don't wait on me.

You might go back to ASUS firmware such as I did in that post and go from there exactly as I done Wink

Here is the back label of one of mine


Some other junk about that router here:
http://mrjcd.com/junk/dd-wrt/ASUS_RT-N12D1/
Looks like I got its MTD parts for someone back in March of this year for some reason Rolling Eyes
eibgrad
DD-WRT Guru


Joined: 18 Sep 2010
Posts: 8034

PostPosted: Thu May 30, 2019 14:48    Post subject: Reply with quote
I also specifically have the RT-N12/D1.
_________________
DD-WRT: DNS Leak Detection w/ VPNs (updated 6/5/19)
NEW SCRIPT!: ddwrt-mount-usb-drives.sh
NEW SCRIPT!: ddwrt-blacklist-domains.sh
NEW SCRIPT!: ddwrt-ovpn-remote-access.sh
NEW SCRIPT!: ddwrt-pptp-policy-based-routing.sh
aser
DD-WRT Novice


Joined: 27 May 2019
Posts: 6

PostPosted: Thu May 30, 2019 15:27    Post subject: Reply with quote
mrjcd wrote:

Here is the back label of one of mine



I think I'll give that a shot and yes, I did flash the r25974 twice as suggested. Sorry if that wasn't clear.

Though I'm encountering a very interesting issue at the moment. I set things up, no DHCP server, using WAN as a switch, so I currently can connect to the internet using the router with the DD-WRT firmware. Though half the pages time out, I can access google, amazon, facebook, but for example duckduckgo times out, Ubuntu's main site times out, pi-hole as well and the image you have in your post. I guess I'll switch back to my phone's network to resolve this for the time being. Very Happy

Edit 1: After checking the backlabel you've attached, it is pretty similar to mine, mine has a different format on the left hand side but that shouldn't be an issue I believe. I believe you sent it to show the H/W Version and we do have the same version exactly.

Edit 2: When attempting to redo all the steps and going back to the stock, I downloaded the latest version of the software. After this I was unable to SSH into the router completely to be able to use TFTP and using the GUI to install an older firmware or DD-WRT fails.


Last edited by aser on Thu May 30, 2019 17:06; edited 1 time in total
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 3598
Location: Texas, USA

PostPosted: Thu May 30, 2019 16:34    Post subject: Reply with quote
Just for giggles, and hopefully yours is a Broadcom unit, and not a MediaTek:

https://wikidevi.com/wiki/ASUS_RT-N12_series

I think all the Broadcom N12 series units are supported by FreshTomato, but I will have to verify. I haven't been keeping up as much as I should.
aser
DD-WRT Novice


Joined: 27 May 2019
Posts: 6

PostPosted: Thu May 30, 2019 17:04    Post subject: Reply with quote
kernel-panic69 wrote:
Just for giggles, and hopefully yours is a Broadcom unit, and not a MediaTek:

https://wikidevi.com/wiki/ASUS_RT-N12_series

I think all the Broadcom N12 series units are supported by FreshTomato, but I will have to verify. I haven't been keeping up as much as I should.


No worries mate, mine is a broadcom unit indeed. The D1 to be exact.
mrjcd
DD-WRT Guru


Joined: 31 Jan 2015
Posts: 5023
Location: Texas

PostPosted: Thu May 30, 2019 23:08    Post subject: Reply with quote
I wish you good luck Very Happy
Since I'm just tinkering around I just installed [dd-wrt.v24-39884_NEWD-2_K3.x_mega.bin] on the RT-N12-D1
Seems to be working ok with newest r39884
Reset after GUI install over r36104 mega
Put him into 'Repeater' mode connected to main router's guest net.
The only weird thing I seen was when I created the VAP it thru me to --
'Broadcom - CFE miniWeb Server' ..... I just thought WTH and pushed its power switch
Left it powered off 'bout 15 seconds and pushed power back on. It all came back with what I was doing,
so I finised seting up the VAP (security). Connected my phone to its VAP and all worked very good.

Note: this is a very short term test but looks good so far
Note2: after first installed the K2.6 r25974 twice to correct ports I have never had a problem with them again

Here's a couple pics -- and yea, The RT-N12D1 always showed as a RT-N12B ...AFAIK BS never had this router Razz



EDIT: yea, tomato firmware works very nice on this unit but I ain't used one since last Shibby tomato Wink
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 3598
Location: Texas, USA

PostPosted: Fri May 31, 2019 1:42    Post subject: Reply with quote
Wouldn't take much to fix the model detection, but it might take months for the commits to hit the repo lol
aser
DD-WRT Novice


Joined: 27 May 2019
Posts: 6

PostPosted: Sun Jun 02, 2019 14:05    Post subject: Reply with quote
mrjcd wrote:
I wish you good luck Very Happy


Thank you mate, I appreciate all your help. Sadly looks like my luck ran out. I decided to go back to factory firmware and start the process from the beginning. Though I made an amateur mistake, I went with the newest firmware from Asus. For some reason I can't FTP with all FTP connections being rejected and it refuses to flash anything that isn't certified by Asus.

This leaves the only option is to do this over a serial connection which I don't have the means to do at the moment.
eibgrad
DD-WRT Guru


Joined: 18 Sep 2010
Posts: 8034

PostPosted: Sun Jun 02, 2019 20:18    Post subject: Reply with quote
aser wrote:
mrjcd wrote:
I wish you good luck Very Happy


Thank you mate, I appreciate all your help. Sadly looks like my luck ran out. I decided to go back to factory firmware and start the process from the beginning. Though I made an amateur mistake, I went with the newest firmware from Asus. For some reason I can't FTP with all FTP connections being rejected and it refuses to flash anything that isn't certified by Asus.

This leaves the only option is to do this over a serial connection which I don't have the means to do at the moment.


I'm a little surprised that tftp wouldn't work. But I now seem to recall this being a problem a long time ago, and if you went back to earlier ASUS firmware, it didn't have this check. Not sure which version, or if even ASUS removed it from their website for this very reason. I *think* we might have even gotten around the problem by renaming the file, and *maybe* using a hex editor to change the internal name. It's been so long ago, I just can't remember the details.

_________________
DD-WRT: DNS Leak Detection w/ VPNs (updated 6/5/19)
NEW SCRIPT!: ddwrt-mount-usb-drives.sh
NEW SCRIPT!: ddwrt-blacklist-domains.sh
NEW SCRIPT!: ddwrt-ovpn-remote-access.sh
NEW SCRIPT!: ddwrt-pptp-policy-based-routing.sh
fibreonic
DD-WRT Novice


Joined: 02 Jun 2019
Posts: 3

PostPosted: Sun Jun 02, 2019 21:31    Post subject: Reply with quote
Hello,

the r26125 firmware works on the ASUS RT-N12D1 Router:
http://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2015/02-02-2015-r26125/broadcom_K26/dd-wrt.v24-26125_NEWD-2_K2.6_mini.bin
http://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2015/02-02-2015-r26125/broadcom_K26/dd-wrt.v24-26125_NEWD-2_K2.6_mega.bin
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