RB2011-UAS RouterBrick

RouterOS Beginner Basics
1

Hey guys, I recently purchased a RB2011UAS-2HnD-IN, this is it here if your interested
http://i.mt.lv/routerboard/files/RB2011UAS_2HnD.pdf. Anyway I pulled it out of the box. I then followed the setup guide listed here http://i.mt.lv/routerboard/files/rb2011U-qg.pdf and gave the route a new static IP, created a SSID and assigned dhcp to that, I made a couple of other suerficial changes like hostname abd the like, don’t ask me to elbaorate because this all happened some time ago and I cannot actually remember, however I have no doubt that one of the things that I did under the banner of “bit & pieces” certainly caused the end result.

So anyway I rebooted my the router and the pretty little displays comes up and says that its looking for netboot, then loading the kernel and then finally it loads the final dashboard, but I cannot connect to the ip addresses that I defined, nor is there a SSID to connect to as there was before I rebooted it.

Steps I have done to resolve:

The reset button on the back of the case doesn’t really work, so I pulled off the case and used the jumpers on the board to reset the device in the following process.

  1. Pushed and Held the reset button before powering on the device, then and at power up release the button will force load the backup boot loader. Result, nothing noticeably changed in the boot process.

  2. I then tried again and held the button and released it only when the green LED starts flashing, to reset RouterOS configuration. To tell you the truth I tried a million times to get the lights to flash but once again the reset button seemed to have no impact on the boot process.

  3. Connect to device using serial over usb connection. Now I couldn’t find a definitive guide on how to go about this is I simply used minicom, aa linux utilitie to scan all of the /dev/ttyS[0123] and /dev/tty[$(seq 60)] ports and once again nothing.

I only run Linux so I have no access to the Windows based utilities that configure a network boot loader for RouterBoard devices. I have tried to run these under wine and while they seem to work, there has been no determinable change in the device boot process, so either they don’t work under wine or the router is koozed.

I’m stuck with a rather expensive RotuerBrick at the moment and any advice yo guys can give me would be much appreciated.

Thanks and look forward to any advice you might have.

2

There was a bug that left some RouterBoard models with no default config after upgrading to ROS v6. My RB493G didn’t get a default IP at least, so I had to log in via the serial connection to get everything up and running again. That might be what has happened to you.

I think most modern Linux distros assign USB serial adapters to /dev/ttyUSBx instead of /dev/ttySx. Mine gets assigned to /dev/ttyUSB0 at least.

I’m not familiar with minicom, I use cu or PuTTY to connect to my RouterBoard devices. Try installing cu and run it like this: cu -l /dev/ttyUSB0 -s 115200. That connects to the /dev/ttyUSB0 device with a baud rate of 115200 and using default values for the other settings.

3

Try to run Winbox and click the […] button. This will only work from ports 2-10. See if it finds the router. Probably the router is reset to defaults, and as a coincidence, your minicom is incorrectly configured.