Gigabit-Ethernet
================

.. admonition:: Galvanic Isolation

    The Gigabit-Ethernet interface is **galvanically isolated** to prevent ground-loops and increases overall system resilience.

.. note::

    Per default the Gigabit-Ethernet interface is configured for `DHCP <https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol>`_.

Configure Gigabit-Ethernet (1000BASE-T) for static IP using ``nmcli``:

* Configure a static IP (on host computer)

.. code:: bash

    sudo ifconfig eth0 192.168.1.2 netmask 255.255.255.0

* Check current IP configuration on X8.

.. code:: bash

    ip addr show eth0
    ...
    3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
      link/ether ee:89:d5:98:e7:01 brd ff:ff:ff:ff:ff:ff

* Delete ``nmcli`` configuration for DHCP (on X8)

.. code:: bash

    nmcli con del 'Wired connection 1'

* Add ``nmcli`` configuration for a static IP (on X8)

.. code:: bash

    nmcli con add type ethernet con-name 'static' ifname eth0
    nmcli con mod 'static' ipv4.addresses 192.168.1.8/24
    nmcli con mod 'static' ipv4.gateway 192.168.2.1
    nmcli con mod 'static' ipv4.dns 8.8.8.8
    nmcli con mod 'static' ipv4.method manual
    nmcli con up 'static'

.. code:: bash

    ip addr show eth0
    ...
    ip addr show eth0
    3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
        link/ether ee:89:d5:98:e7:01 brd ff:ff:ff:ff:ff:ff
        inet 192.168.1.8/24 brd 192.168.1.255 scope global noprefixroute eth0
           valid_lft forever preferred_lft forever
        inet6 fe80::9361:a0f:f192:6199/64 scope link noprefixroute
           valid_lft forever preferred_lft forever