On 24/09/2008, at 7:36 AM, James Cammarata wrote:

>
> On Tue, 23 Sep 2008 16:31:27 -0500, Dave Augustus <[EMAIL PROTECTED] 
> >
> wrote:
>> Just saw this in one of my servers in /etc/modprobe.conf
>>
>> alias bond0 bonding
>> alias bond1 bonding
>> options bonding mode=active-backup max_bonds=2
>>
>>
>> Here is the explanation of the bonding modes:
>>
>> # bonding modes:
>> #  0 sets a round-robin policy for fault tolerance (FT) and load
>> balancing (LB)
>> #  1 sets an active-backup policy for FT
>> #  2 sets an xor (exclusive-or) policy for FT and LB
>> #  3 sets a broadcast policy for FT
>> #  4 sets an IEEE 802.3ad dynamig link aggregation policy
>> #  5 sets a transmit load balancing (TLB) policy for FT and LB
>> #  6 sets an active load balancing (ALB) policy for FT and LB
>> #
>
> There are a few more options than even this, for instance in our  
> configs
> where we have active-backup we specifically set which nic is the  
> primary
> interface.  Not sure if we want to account for all possible options,  
> but
> there are more.
>

You can also add the options to the ifcfg-bond0 file as below:-

DEVICE=bond0
ONBOOT=yes
BOOTPROTO=static
IPADDR=<ip address>
NETMASK=255.255.255.0
BONDING_OPTS="mode=active-backup miimon=100"

Some documentation can be found here 
http://www.id.ethz.ch/about/sections/kom/dkid/themas/link-aggregation/bonding

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