How To Setup Bonded (bond0) and Bridged (br0) Networking On Ubuntu LTS Server

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To set up bonded (bond0) and bridged (br0) networking on Ubuntu LTS server, follow these steps:

  1. Install the necessary packages:
sudo apt-get update
sudo apt-get install ifenslave
  1. Configure network interfaces: Edit the network interface configuration file, /etc/network/interfaces, and configure the network interfaces you want to bond. Here is an example of two bonded interfaces, eth0 and eth1, that are also part of a bridge, br0:
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet manual
bond-master bond0

# The secondary network interface
auto eth1
iface eth1 inet manual
bond-master bond0

# The bonded interface
auto bond0
iface bond0 inet dhcp
bond-mode active-backup
bond-miimon 100
bond-slaves none

# The bridge interface
auto br0
iface br0 inet dhcp
bridge_ports bond0
bridge_stp off
bridge_fd 0

  1. Restart networking: Restart networking to apply the changes:
sudo /etc/init.d/networking restart
  1. Verify the setup: Verify the bond and bridge setup by checking the status of the interfaces:
cat /proc/net/bonding/bond0
brctl show

That’s it! You’ve successfully set up bonded (bond0) and bridged (br0) networking on Ubuntu LTS server. You should now have a more robust and flexible network configuration.

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