Gigabit-Ethernet#

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.

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

  • Configure a static IP (on host computer)

sudo ifconfig eth0 192.168.1.2 netmask 255.255.255.0
  • Check current IP configuration on X8.

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)

nmcli con del 'Wired connection 1'
  • Add nmcli configuration for a static IP (on X8)

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'
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