Linux system under the two-card configuration Practice Summary _ Networking Tutorials

Premise:

1. Do not configure on the virtual machine. Whether it is VM5 or VM6, I have tried many times, each is seemingly successful, but the machine ping do break the network test will find the truth;


2. Must use the same brand with the model card. Two different network cards, according to the document configured, even from the local ping external address, you will find that the network seems to be completely broken;


3. Use service network restart carefully. After the completion of the test, avoid the operation of network restart on the dual NIC machine, otherwise you will find that the network is not working, even if you manually perform Ifenslave eth0 eth1 can only activate a network card.


Let's say the configuration:


1. Network card Configuration

#cd/etc/sysconfig/network-scripts/

#cp Ifcfg-eth0 ifcfg-bond0

#vi ifcfg-bond0

Change the first line into device=bond0

# Cat Ifcfg-bond0

Device=bond0

Bootproto=static

ipaddr=192.168.1.100

netmask=255.255.255.0

broadcast=192.168.1.255

Onboot=yes

Type=ethernet

The other network adapters are configured as follows:

# Cat Ifcfg-eth0

Device=eth0

Onboot=yes

Bootproto=none

# Cat Ifcfg-eth1

Device=eth0

Onboot=yes

Bootproto=none


2. Module configuration

Edit/etc/modules.conf or/etc/moprobe.conf files

Join the following line

Alias Bond0 Bonding

Options Bond0 miimon=100 mode=1


3. Start configuration

# vi/etc/rc.d/rc.local

Join

Ifenslave bond0 eth0 eth1


Restart the machine, use IFCONFIG-A to view the network card configuration information, if found bond0,eth0,eth1 three network card MAC address and IP address are the same, then the description is good.


4. Test verification


With the outside of the same network segment of a machine to ping test, the dual network card machine manually unplug any of them (or use ifup eth0&&ifdown eth1), ping machine terminal should not interrupt information, or have a "timeout" Soon after the recovery, the test proved successful