CentOS

This Artical is to help with setting up a bonded and bridged network on CentOS 7.

Most documentation I found was incorrect and thought I'll share this.

To setup bonded interfaces you would also need to configure your switch. This is usually by truncating two ports. The protocol I use on my bonding is 803.3ad / mode=4.

Goto /etc/sysconfig/network-scripts

I renamed my interfaces back to ifcfg-eth0 and ifcfg-eth1

We first need to setup a working bond0 interface and install a few tools before we can continue with setting up a bridge interface.

ifcfg-eth0

NOTE:If you renamed your interface name you would need to update the "NAME=" to the same name used. I my case I made both eth0

ifcfg-eth1

NOTE:If you renamed your interface name you would need to update the "NAME=" to the same name used. I my case I made both eth1

Create file ifcfg-bond0

ifcfg-bond0

NOTE: IPADDR0 and PREFIX0 use "0" but GATEWAY should not have a "0".I understand this 0 as identifying the entering of multiple IP address for an interface. The next IP address you would like to enter on the interface could be IPADDR1=x.x.x.x and PREFIX1=25

Restart your network:

Status of your network

Confirm your default gateway is correct

Test


If all is working install:


Now we can continue to setting up a bridge interface: Create file ifcfg-br0

ifcfg-br0


Make changes to ifcfg-bond0

NOTE:I removed IPADDR0, PREFIX0, GATEWAY, DNS1, DOMAIN, DEFROUTE. Added "BRIDGE=br0"

Restart your network:

Status of your network

Confirm your default gateway is correct

Test


Hope this will help.