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This article shows how to configure the network on the Nexcom NISE50 running Ubuntu 16.04.

Setting a static IP

To set up an static IP follow this steps

Edit the /etc/network/interfaces file

azeti@Nexcom-Master:~$ sudo vi /etc/network/interfaces

Set the IP, gateway and DNS for each interface (enp2s0 for Ethernet 1 and enp3s0 for Ethernet 2)

allow-hotplug enp3s0
iface enp3s0 inet static
        address 10.0.0.1
        netmask 255.255.255.0
		gateway 10.0.0.100
		dns-nameservers 8.8.8.8 8.8.4.4

Start the connection

root@Nexcom-Master:~#sudo ifdown enp3s0 ;sudo ifup enp3s0

Creating a 3G Connection

To create a mobile connection, execute this commands with the proper information

The exact command to create a new connection depends on the 3G card model used and the sim card provider. Different cards will use different interfaces (ifname) and different sim providers will use different apn, user an password.

To check the port to be used execute the command 'sudo mmcli -m 0' and check the System / Primary Port

root@Nexcom-Master:~# mmcli -m 0

/org/freedesktop/ModemManager1/Modem/0 (device id '09bb10c02c0912032e41d6402c4178eac5ee9594')
  -------------------------
  Hardware |   manufacturer: 'QUALCOMM INCORPORATED'
           |          model: '0'
           |       revision: 'UC20GQBR03A07E1G  1  [2014/05/05 9:00:00]'
           |      supported: 'gsm-umts'
           |        current: 'gsm-umts'
           |   equipment id: '861075021729728'
  -------------------------
  System   |         device: '/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.2'
           |        drivers: 'qmi_wwan, option1'
           |         plugin: 'Generic'
           |   primary port: 'cdc-wdm0'
           |          ports: 'wwp0s29u1u2i4 (net), ttyUSB0 (qcdm), ttyUSB2 (at), ttyUSB3 (at), cdc-wdm0 (qmi)'

Create a new connection

Sierra Wireless MC8090

root@Nexcom-Master:~# nmcli con add type gsm ifname ttyUSB3 con-name TELEKOM_GSMDEMO apn internet.t-mobile user t-mobile password tm
Connection 'TELEKOM_GSMDEMO' (e2321f56-3d77-46c0-8e52-a7dcda87b0d8) successfully added.

Quectel UC20GB

root@Nexcom-Master:~# nmcli con add type gsm ifname cdc-wdm0 con-name TELEKOM_QUACTEL apn internet.t-mobile user t-mobile password tm
Connection 'TELEKOM_QUACTEL' (2f98d139-2442-4f51-b554-b13da3216a3c) successfully added.

Quectel UC20GB

Activate the connection

admin@localhost:~$ nmcli con up TELEKOM_GSMDEMO
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/6)

OpenVPN

For openvpn setup follow the procedure explained here:

OpenVPN Client on Ubuntu 16.04

Troubleshooting

To check the assigned IP used "ifconfig"

To list the created connections use "network-manager.nmcli con"

root@Nexcom-Master:~$ nmcli con
NAME                UUID                                  TYPE            DEVICE
TELEKOM_GSMDEMO     d472ed41-113a-4a37-972c-6517e335f3cf  gsm             ttyACM3

To check the configuration of each connection use the command "nmcli con show connection-name"