Bonding

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Current revision as of 14:44, 2 February 2011

Interface bonding

It is possible to use one IP address for one or more interfaces. It is possible to join wireless and LAN interface together. First of all you have to test both interfaces if they work. To set up wireless interface see steps in Wifi on station. Wireles and Ethernet interface can be bonded in case that both networks are bridged.

To set up bonding of eth0 and wlan0 interfaces in backup mode follow these steps:

1) create configuration of bond0 interface in /etc/sysconfig/network-scripts/ifcfg-bond0

ONBOOT=yes
DEVICE=bond0
BONDING_OPTS="miimon=100 mode=active-backup primary=wlan0"
BOOTPROTO=none
TYPE=Bonding
USERCTL=no
IPV6INIT=no
PEERDNS=no
DNS1="x.x.x.x
GATEWAY="x.x.x.x"
IPADDR="x.x.x.x"
NETMASK="x.x.x.x"

2) backup original /etc/sysconfig/network-scripts/ifcfg-eth0 and edit it

ONBOOT=yes
SLAVE=yes
MASTER=bond0
TYPE=Ethernet
DEVICE=eth0
BOOTPROTO=none
PEERDNS=yes
USERCTL=no
IPV6INIT=no

3) backup original /etc/sysconfig/network-scripts/ifcfg-wlan0 and edit it

ONBOOT=yes
SLAVE=yes
MASTER=bond0
TYPE=Wireless
DEVICE=wlan0
BOOTPROTO=none
PEERDNS=yes
USERCTL=no
IPV6INIT=no

ESSID="xx"
RATE=auto
MODE=Managed

4) restart network

service network restart

5) check your interfaces

ifconfig

To check which interface is in use you can use:

cat /proc/net/bonding/bond0

In this configuration is wlan0 master and eth0 backup. I you have access to your wireless network based on MAC addresses check MAC address of bond0 interface. This interface takes MAC address from first bonded interface. It means that in this case it could have MAC of eth0 interface.

Related articles

Wifi on station