Configuring Network Interface Bonding

1. Abount Bonding

The Linux bonding driver provides a method for aggregating

Multiple network interfaces into a single logical "bonded" interface.

The behavior of the bonded interfaces depends upon the mode; Generally

Speaking, modes provide either hot standby or load balancing services.

Additionally, link integrity monitoring may be performed.

Requirements for bonding

1. Ethtool support on the base drivers for retrieving

The speed and duplex of each slave.

2. A switch that supports IEEE 802.3ad Dynamic link

Aggregation.

Most switches would require some type of configuration

To enable 802.3AD mode.

2. Persistent bonding Configuration

Add in the/etc/modprobe.d/dist.conf file

Alias Bond0 Bonding

Options Bond0 mode=1 miimon=30

[email protected] network-scripts]$ cat ifcfg-bond0

Device=bond0

Type=ethernet

Onboot=yes

Nm_controlled=no

Bootproto=none

ipaddr=192.168.1.100

Prefix=24

gateway=192.168.1.1

dns1=114.114.114.114

Defroute=yes

Ipv4_failure_fatal=yes

Ipv6init=no

Name= "System bond0"

[email protected] network-scripts]$ cat Ifcfg-eth0

Device=eth0

Type=ethernet

Onboot=yes

Nm_controlled=no

Bootproto=none

Master=bond0

Slave=yes

[email protected] network-scripts]$ cat Ifcfg-eth1

Device=eth1

Type=ethernet

Onboot=yes

Nm_controlled=no

Bootproto=none

Master=bond0

Slave=yes

Configuring Network Interface Bonding