Connect MK - Linux laptop Serial

aarango · Thu Mar 30, 2017 4:00 pm

Hi,

Recently I bought this:
https://www.amazon.es/RS232-Serial-DB9- ... usb+serial

I connected to port serial and usb to my laptop, how could I get console? I tried using "Minicom" but not luck. Too I read manual but I hadnd't success

Thanks.

null31 · Thu Mar 30, 2017 9:29 pm

Hi.

Does appear some ttyUSB or ttyACM on /dev/tty*?
Also can be some ttySx.
This depend of serial controller from cable.

You can use the "screen" command to access the serial console.
A time ago, i used this tutorial to unbrick a tp-link router and i had success.
> http://blog.hajma.cz/2014/02/tp-link-tl ... cking.html

**From blog
Then I connected to the serial link:
$ screen /dev/ttyUSB1 115200,cs8,-parenb,-cstopb

idlemind · Thu Mar 30, 2017 11:41 pm

Just to make sure, the MikroTik device you are trying to connect to has a serial port right? If not you can likely use the USB port on the MikroTik to connect another one of those USB adapters and then connect to the 2 serial adapters.

The settings are the same as what you'd use to connect to a Cisco device except the baud which is 115200 instead of 9600.

I've attached an image showing me serial consoling into my new hEX.

You may have to add a console on your MikroTik w/the /system console add port=<usb#> term=<name> command.

DadoSa · Fri Mar 31, 2017 12:47 am

Hi,

Please check /var/log/syslog for adapter chipset and ttyUSBx.
If your chipset is Profilic it should work fine, but if you have something like
ch341-uart listed in syslog then you can try to compile driver for device

http://blog.xentoo.info/2015/12/31/ubun ... from-ebay/

I had ch341 adapter, but couldn't make it work.

Regards,

aarango · Fri Mar 31, 2017 7:47 am

Hi,

Thanks you all. In dmesg I see /dev/ttyUSB0.

My router is this: https://routerboard.com/CCR1016-12G

Should I change any value on Minicom to connect router MK?

Thanks again.

DadoSa · Fri Mar 31, 2017 4:23 pm

Hello,

on ubuntu You can try:
sudo minicom
1. CTRL+A O
2. Serial port setup
3. Press A and modify /dev/ttyS0 (default value) to /dev/ttyUSB0, then press enter
4. Press E and set Bps/par/Bits to 9600 8/N/1
5. Under F and G set HW/SW flow control (if needed)

Save setup as dfl, exit and restart minicom

This should be regular setup, working fine with Cisco,...

kevintitus81 · Sat Apr 01, 2017 3:45 am

In ubuntu I usually use "screen" to console in via serial. Usually it goes something like this...

user# sudo screen /dev/ttyUSB0 19200 <--(my particular usb to serial dongle) and then see if you get console.

aarango · Wed Apr 05, 2017 11:57 am

Sorry for late reply. I tried with 9200, 115200... but when I connect -> minicom -o /dev/ttyUSB0 I can't see anything, screen is locked.

Have I enable any option on MK?

Thanks.

idlemind · Wed Apr 05, 2017 4:57 pm

Hit enter at least 1 time to bring up login screen.

If it's not that then look at my previous post about configuring the MikroTik to use the /system console correctly. Does your model have a bit in serial port or are you doing a USB to Serial on the MikroTik as well as the computer like my picture?

DadoSa · Wed Apr 05, 2017 8:19 pm

What is output of lsusb?

aarango · Thu Apr 06, 2017 9:10 am

Hit enter at least 1 time to bring up login screen.

If it's not that then look at my previous post about configuring the MikroTik to use the /system console correctly. Does your model have a bit in serial port or are you doing a USB to Serial on the MikroTik as well as the computer like my picture?

Sorry, not luck. I tried but I can't see any on screen. My router has a serial connection and other point is a USB. I connect serial to Router and USB to my laptop, after setup bps, and use:
#minicom -o /dev/ttyUSB0

My lsusb yes detect it:
#:~$ lsusb
Bus 001 Device 010: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter

Thanks.

DadoSa · Thu Apr 06, 2017 10:13 am

As I wrote before, You have usb-to-serial adapter that is not working out of the box on linux.
You could try to compile driver, https://www.linux.org.ru/forum/linux-hardware/11965571,
for procedure look at the last post .

IMHO, best option for You is to sell current adapter and buy adapter based on PL23xx chipset,
adapters based on 340/341 chipsets are working fine under Windows.

Regards

aarango · Thu Apr 06, 2017 12:10 pm

As I wrote before, You have usb-to-serial adapter that is not working out of the box on linux.
You could try to compile driver, https://www.linux.org.ru/forum/linux-hardware/11965571,
for procedure look at the last post .

IMHO, best option for You is to sell current adapter and buy adapter based on PL23xx chipset,
adapters based on 340/341 chipsets are working fine under Windows.

Regards

I just installed driver for usb-serial to Windows and Windows can identify the cable. Now I run putty, mark serial but I cant connect. What values should I use on putty? where should I connect?
I attach two pictures.

Thanks

sid5632 · Thu Apr 06, 2017 12:13 pm

Fairly obviously, COM8.

aarango · Thu Apr 06, 2017 1:24 pm

Fairly obviously, COM8.

thanks, it was stupid for my side

I connected to COM8 but I can't see anything on screen, putty keep on blank screen (I setup 115200 bps)

Ayn idea?

Thanks.

DadoSa · Thu Apr 06, 2017 10:02 pm

If you reboot mikrotik box is there any startup messages?
Can you login via winbox, open terminal and check serial port config with

[admin@MikroTik] system serial-console> /port print detail

kevintitus81 · Fri Apr 07, 2017 1:12 am

I would advise using "screen" if you are running linux, I have had issues with putty on serial connections in the past.

screen /dev/ttyUSB0 19200

then hit enter once and see if you get anything.

You may need to winbox to the device and check serial settings too.

aarango · Fri Apr 07, 2017 9:00 am

If you reboot mikrotik box is there any startup messages?
Can you login via winbox, open terminal and check serial port config with

[admin@MikroTik] system serial-console> /port print detail

[admin@MikroTik] /system console> /port print detail
Flags: I - inactive
0 name="serial0" used-by="Serial Console" device="" channels=1 baud-rate=auto data-bits=8 parity=none stop-bits=1 flow-control=none

1 name="serial1" used-by="Serial Console" device="" channels=1 baud-rate=115200 data-bits=8 parity=none stop-bits=1 flow-control=none

This is my output.
I tried it with screen but I don't receive anything.
Maybe I need a cable null modem between both sides?

Thanks.

DadoSa · Fri Apr 07, 2017 4:45 pm

Do you have any cisco box to try that adapter, maybe it's just not working?
Default settings are 9600 8N1

aarango · Wed Apr 12, 2017 10:15 am

Do you have any cisco box to try that adapter, maybe it's just not working?
Default settings are 9600 8N1

Hi, thanks. I have requested a adapter, when I receive it I will test it.

aarango · Mon Jun 26, 2017 12:51 pm

Hi, after some months without re-open post I have to say that I can't connect using serial.

My windows recognize the cable (COM4), and I have enabled serial0 and 1 in router MK but when I open putty with COM4 and baudios I can't connect.

[admin@MikroTik] /port> print
Flags: I - inactive 
 #   DEVICE NAME                                                                                                   CHANNELS USED-BY                                                                                                BAUD-RATE
 0          serial0                                                                                                       1 Serial Console                                                                                         115200   
 1          serial1                                                                                                       1 Serial Console                                                                                         115200

[admin@MikroTik] /system console> print
Flags: X - disabled, U - used, F - free 
 #   PORT                                                                                                                TERM                                                                                                               
 0 F serial0                                                                                                             vt102                                                                                                              
 1 F serial1                                                                                                             vt102

Why can't I connect to my router using COM port?

Thanks

Connect MK - Linux laptop Serial

Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Re: Connect MK - Linux laptop Serial

Who is online