Routerboard support page
RouterOS SupportAll Routerboard RB133 come with RouterOS and a level 4 license, while RB133/C come with RouterOS and a level 3 license. Level 3 allows client operation and level 4 allows client and AP operation. For more customisation, at the price of more effort there is also the open source OpenWRT linux distribution. Routerboards come pre-bundled with your choice of RouterOS or OpenWRT, however you can always go back to RouterOS since the software license is bundled with the board from the factory.
Basic Setup Guide for RouterOS 2.9
Default RouterOS login: admin
Default RouterOS password:
- Serial Null-modem Cable with Loopback
- Telnet or SSH
- Winbox
- Webbox
For RB133 series, the default serial port settings are 115200 bits/s, 8 data bits, 1 stop bit, no parity, hardware (RTS/CTS) flow control. Flow control may need to be disabled, as it is not implemented properly. The pinout diagram for the cable is show below.

If you are connecting to the router for the first time, it may not have an IP address. You can still telnet to the device with MAC-Telnet as part of the Neighbour Viewer utility. The client must be on the same broadcast segment of the network for MAC-Telnet to work. Once an IP address is set up, you can connect to the IP with a standard Telnet or SSH client such as PuTTy

Winbox is a graphic user interface utility for accessing RouterOS. You can connect by IP or by MAC address. You may need to use Neighbour Viewer to find out the MAC address, then type that into Winbox. Alternatively you could use telnet or neighbour viewer to set up an IP address before connecting with Winbox. Download Winbox here or you can download it from your router if it has an IP address http://your.router.ip/winbox/winbox.exe


Using a web browser put the IP address of your Routerboard into the address bar and you will be able to login and manage via the web interface called Webbox
OpenWrt Support
Installing OpenWrt is done at your own risk. Functionality is not guaranteed. To install OpenWrt on your RB1xx you will need the following files.
You will also need:
- DB9f to DB9f/DB25f serial null-modem cable
- Serial console program such as Hyperterminal
- DHCP or BootP and TFTP server such as DNSMasq or DHCPD
- HTTP or FTP server
- Network cable
Credits for this go to: Andrea Conti, David Goodenough and the friendly and helpful yaffs2 development community, as well as Ozonet. The original source for this is here. I take no credit for the information and files found below. This is based on OpenWrt SVN r8440.
- Export your RouterOS license key using Winbox, Webbox, or command line, in case you want to go back to RouterOS later.
- Set up your BOOTP server with openwrt-adm5120-2.6-vmlinux.elf ready to be served over TFTP.
- Plug in the serial cable and power up the Routerboard. The default port settings are 115200 8-N-1. RouterBOOT should appear immediately, press Enter within 2 seconds to get into the RouterBOOT menu
- Format the nand from the RouterBOOT menu
- Press "o" to select boot device and then press "e" to boot over Ethernet, then "x" to exit the menu and boot from Ethernet. The RAMDISK image should boot over the network.


- This has set up the environment needed to download and install the OpenWrt kernel and filesystem structure on to the NAND. First get the network settings correct for your network using ifconfig.
- Put kernel on your web or ftp server then mount /dev/mtdblock2 /mnt; cd /mnt; wget
/kernel - Put openwrt-adm5120-2.6-rootfs.tgz on your web or ftp server then cd /; umount /mnt; mount /dev/mtdblock3 /mnt; cd /mnt; wget
/openwrt-adm5120-2.6-rootfs.tgz - gzip -d openwrt-adm5120-2.6-rootfs.tgz; tar xvf openwrt-adm5120-2.6-rootfs.tar; rm openwrt-adm5120-2.6-rootfs.tar; cd /; umount /mnt; sync; reboot
- Enter the RouterBOOT menu again and press "o" to select boot device, press "n" to select NAND again then "x" to exit and the Routerboard should now boot into OpenWrt
- The default IP is 192.168.1.1 as per OpenWrt, however you can change this from the serial console. You can then telnet in to OpenWrt, and set a root password which will then disable telnet and enable SSH.
Packages
Non-kernel specific packages (kamikaze)
Packages and modules for kernel 2.6.22.1-adm5120 (r8440)
Also see: OpenWrt wiki page on RB1xx
Reverting to RouterOS- Download MikroTik Netinstall and the RouterOS-##.npk for Routerboard 100 from www.mikrotik.com/download.html
- Unzip netinstall.zip and run netinstall.exe in Windows or Linux + Wine
- Using the same serial console method as above, select boot from Ethernet (using BOOTP)
- In Netinstall select the package RouterOS-##.npk that you downloaded
- Press the "Net Booting" button in Netinstall and select Boot Server Enable, put in any free IP address on your network
- In the serial console, press "x" to exit the menu to boot from Ethernet
- After booting, the MAC address should appear in Netinstall. Select the MAC address and press the "Install" button
- When installation is finished, exit Netinstall
- Press Enter in the serial console to reboot the new RouterOS. Make sure you switch back to boot from NAND
- Import your license key into RouterOS.
Other Utilities
The Dude freeware network monitor by MikroTik.
An interesting network scanner/monitor application. Runs in Windows or Linux Wine environment. Supports client/server operation, background maps, SNMP and more.


