Creating a bridge
A network bridge is a logical device that forwards traffic between connected physical interfaces based on MAC addresses. This kind of bridge can be used to emulate a hardware bridge in virtualization applications, such as KVM, to share the NIC with multiple virtual NICs.
Getting ready
To bridge two physical networks, we need two network interfaces. Your physical interfaces should never be configured with any address as the bridge will be configured with the IP address(es).
How to do it…
For the sake of ease, the physical network interfaces we will bridge are eth1 and eth2. The IPv4 address will be 10.0.0.2 with a subnet mask of 255.0.0.0 and a default gateway of 10.0.0.1.
Creating a bridge using nmcli
Make sure that you activate the bridge after configuring the bridge and interfaces! Here are the steps that you need to perform for this:
- First, create the bridge connection via the following command:
~]# nmcli connection add type bridge ip4 10.0.0.2/8 gw4 10.0.0.1 Connection...
