Linux under the two-card binding __linux

If the server has two fast network card can bind it to a virtual network card, if a network card is broken another piece can continue to work, increased redundancy and load, the specific practices are as follows:

Create a new virtual network card with the following command:

Iv/etc/sysconfig/network-scripts/ifcfg-bond0

Enter in the file:

Device=bond0
Bootproto=static
ipaddr=192.168.0.231
netmask=255.255.255.0
Onboot=yes
Type=ethernet

Exit after saving

Then modify Ifcfg-eth0 and ifcfg-eth1 two files

Vi/etc/sysconfig/network-scripts/ifcfg-eth0

Modified to:

Device=eth0
Bootproto=static
Slave=yes
Master=bond0
Onboot=yes
Type=ethernet

Vi/etc/sysconfig/network-scripts/ifcfg-eth1

Modified to:

Device=eth1
Bootproto=static
Slave=yes
Master=bond0
Onboot=yes
Type=ethernet

To configure the gateway:

Vi/etc/sysconfig/network

Modified to:

Networking=yes
Hostname=name
gateway=192.168.0.1

In/etc/modprobe.conf (in some versions, this file is modules.conf), add the following lines:

Alias Bond0 Bonding
Options Bond0 miimon=1000 model=0
Alias Eth0 e1000
Alias Eth1 e1000

Vi/etc/modprobe.conf

Modified to:

Alias Bond0 Bonding
Options Bond0 miimon=1000 model=0
Alias Eth0 e1000
Alias Eth1 e1000
Alias Scsi_hostadapter Mptbase
Alias Scsi_hostadapter1 Mptscsih
Alias Scsi_hostadapter2 MegaRAID
Alias Usb-controller USB-UHCI
Alias Usb-controller1 EHCI-HCD

Save exit and restart the network.

Service Network restart

After reboot, unplug a network cable or stop a NIC, and does not affect Internet services.