The USB port on the device like a PC, can be used for additional storage media like USB flash disk. It can also function as an interface to connect the modem 3G/EVDO. Mikrotik
making devices more flexible in installation, especially in a location
that has not been affordable Internet connections typically use wired or
wireless.
The
device has support RouterBoard USB interface has a discrete code "U" as
RB411U, RB411UAHR, RB433UAH, RB751U-2HnD, RB751G-2HnD, RB750UP and so
on. (Note: For the USB power injector RB411UAHR needed to turn a USB device).
Topology
In this article will be given a step by step tutorial to use the USB port for the modem, as the picture of the network, this tutorial uses the RouterBoard Indoor RB751U-2HnD and 3G sierra 881U modem, which forms the topology like the one in the image below:Here are some steps we have to do in the configuration:
IP Address
The first step we add our router is the IP address on the interface that will be used for the local network.
Wireless Access Point
The next wlan1 enable interface as an access point for the distribution of wireless connection to a local network.
DNS
For the DNS settings we need to enable the parameter "allow remote request" so that our client can request the DNS to our router.
USB Devices
If the IP interface (Ethernet and wireless) and DNS is configured, we pair our 3G modem into the USB port on the router. Things we need to check the return is the "/ system resource usb".For devices that are supported Mikrotik, usually a new USB device will appear automatically. Mikrotik also will build a new interface "ppp-out1".PPP Dial-OutTo enter the Username, Password and APN from our provider, our input interface ppp-out1 that have been made by Mikrotik.
NAT Masquerade
The last step, we have to add srcnat masquerade for ppp-out1 interface so that the client can access to the internet.Note: Make sure that the modem you are using is sikenali by Mikrotik OS. A complete list of modems that have been recognized by the OS Mikrotik at:
Topology
In this article will be given a step by step tutorial to use the USB port for the modem, as the picture of the network, this tutorial uses the RouterBoard Indoor RB751U-2HnD and 3G sierra 881U modem, which forms the topology like the one in the image below:Here are some steps we have to do in the configuration:
IP Address
The first step we add our router is the IP address on the interface that will be used for the local network.
Wireless Access Point
The next wlan1 enable interface as an access point for the distribution of wireless connection to a local network.
DNS
For the DNS settings we need to enable the parameter "allow remote request" so that our client can request the DNS to our router.
USB Devices
If the IP interface (Ethernet and wireless) and DNS is configured, we pair our 3G modem into the USB port on the router. Things we need to check the return is the "/ system resource usb".For devices that are supported Mikrotik, usually a new USB device will appear automatically. Mikrotik also will build a new interface "ppp-out1".PPP Dial-OutTo enter the Username, Password and APN from our provider, our input interface ppp-out1 that have been made by Mikrotik.
The last step, we have to add srcnat masquerade for ppp-out1 interface so that the client can access to the internet.Note: Make sure that the modem you are using is sikenali by Mikrotik OS. A complete list of modems that have been recognized by the OS Mikrotik at:
