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Just wanted to share the linux bonding creation process. Bonding is creation of a single bonded interface by combining 2 or more ethernet interfaces. This helps in high availability and ...
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  1. #1
    Just Joined!
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    network bonding howto


    Just wanted to share the linux bonding creation process.

    Bonding is creation of a single bonded interface by combining 2 or more ethernet interfaces. This helps in high availability and performance improvement.

    Steps for bonding in Fedora Core and Redhat Linux

    Step 1.

    Create the file ifcfg-bond0 with the IP address, netmask and gateway. Shown below is my test bonding config file.

    $ cat /etc/sysconfig/network-scripts/ifcfg-bond0

    DEVICE=bond0
    IPADDR=192.168. 1.12
    NETMASK=255. 255.255.0
    GATEWAY=192. 168.1.1
    USERCTL=no
    BOOTPROTO=none
    ONBOOT=yes

    Step 2.

    Modify eth0, eth1 and eth2 configuration as shown below. Comment out, or remove the ip address, netmask, gateway and hardware address from each one of these files, since settings should only come from the ifcfg-bond0 file above.

    $ cat /etc/sysconfig/network-scripts/ifcfg-eth0

    DEVICE=eth0
    BOOTPROTO=none
    #HWADDR=00:12:17:5C:A7:9D
    #IPADDR=192.168.1.12
    #NETMASK=255.255.255.0
    #TYPE=Ethernet
    #GATEWAY=192.168.1.1
    #USERCTL=no
    #IPV6INIT=no
    #PEERDNS=yes
    ONBOOT=yes
    # Settings for Bond
    MASTER=bond0
    SLAVE=yes

    $ cat /etc/sysconfig/network-scripts/ifcfg-eth1

    DEVICE=eth1
    BOOTPROTO=none
    #HWADDR=01:12:18:5C:A79
    #IPADDR=192.168.1.13
    #NETMASK=255.255.255.0
    ONBOOT=yes
    #TYPE=Ethernet
    USERCTL=no
    #IPV6INIT=no
    #PEERDNS=yes
    #
    # Settings for bonding
    MASTER=bond0
    SLAVE=yes
    $ cat /etc/sysconfig/network-scripts/ifcfg-eth2

    DEVICE=eth2
    BOOTPROTO=none
    #HWADDR=00:12:27:5C:A7:9D
    #IPADDR=192.168.1.12
    #NETMASK=255.255.255.0
    ONBOOT=yes
    #TYPE=Ethernet
    #GATEWAY=192.168.1.1
    #USERCTL=no
    #IPV6INIT=no
    #PEERDNS=yes
    MASTER=bond0
    SLAVE=yes

    Step 3.

    Set the parameters for bond0 bonding kernel module. Add the following lines to /etc/modprobe. conf

    # bonding commands
    alias bond0 bonding
    options bond0 mode=balance- alb miimon=100

    Step 4.

    Load the bond driver module from the command prompt.

    $ modprobe bonding

    Step 5.

    Restart the network, or restart the computer.

    $ service network restart # Or restart computer

    When the machine boots up check the proc settings.

    $ cat /proc/net/bonding/bond0
    Ethernet Channel Bonding Driver: v3.0.2 (March 23, 2006)

    Bonding Mode: adaptive load balancing
    Primary Slave: None
    Currently Active Slave: eth2
    MII Status: up
    MII Polling Interval (ms): 100
    Up Delay (ms): 0
    Down Delay (ms): 0

    Slave Interface: eth2
    MII Status: up
    Link Failure Count: 0
    Permanent HW addr: 00:13:72:80: 62:f0

    Look at ifconfig -a and check that your bond0 interface is active. You are done! . More unix & linux stuffs at http://unixfoo.blogspot.com/

  2. #2
    Just Joined!
    Join Date
    Dec 2010
    Posts
    1
    thanks for the posting, its been a week I'm looking for this...

    hope you still active in this forum...

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