Bonding

Netplan example

network:
  version: 2
  renderer: networkd
  bonds:
    bond0:
      dhcp4: yes
      interfaces:
        - enp3s0
        - enp4s0
      parameters:
        mode: active-backup
        primary: enp3s0

network:
  version: 2
  renderer: networkd
  bonds:
    bond0:
      interfaces:
        - ens3f0
        - ens3f1
      parameters:
        mode: active-backup
        primary: ens3f0

https://netplan.io/examples

See also

• ifconfig, ethtool or obsolete mii-tool (mii-tool -v eth0) nmcli device show, eth0, Network manager
• Ethernet: MII, MDI, bonding, etherchannel, STP, ARP, MAC, STP, Jumbo frames, 802.1X, MTU, Ethernet In-Band Access (IBA), LACP, Multicast, Broadcast, SPI