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using the bonding kernel module and a special network interface, called a channel bondinginterface. Channel bonding enables two or more network interfaces to act as one,simultaneously increasing the bandwidth and providing redundancy.To channel bond multiple network interfaces, the administrator must perform the following steps:1. Add the following line to /etc/modprobe.conf:alias bond bondingReplace with the interface number, such as 0. For each configured channel bondinginterface, there must be a corresponding entry in /etc/modprobe.conf.2. Configure a channel bonding interface as outlined in Section 2.3, “Channel BondingInterfaces”.3. To enhance performance, adjust available module options to ascertain what combinationworks best. Pay particular attention to the miimon or arp_interval and the arp_ip_targetparameters. Refer to Section 5.2.1, “bonding Module Directives” for a listing of availableoptions.4. After testing, place preferred module options in /etc/modprobe.conf.5.2.1. bonding Module DirectivesBefore finalizing the settings for the bonding module, it is a good idea to test which settingswork best. To do this, open a shell prompt as root and type:tail -f /var/log/messagesOpen another shell prompt and use the /sbin/insmod command to load the bonding modulewith different parameters while observing the kernel messages for errors.The /sbin/insmod command is issued in the following format:/sbin/insmod bondReplace with the number for the bonding interface. Replace with aspace separated list of desired parameters for the interface.Once satisfied that there are no errors and after verifying the performance of the bondinginterface, add the appropriate bonding module parameters to /etc/modprobe.conf.The following is a list of available parameters for the bonding module:The Channel Bonding Module391 |
