7–Linux Configuration for Bonding Mode and Virtual LAN (VLAN)Linux Bonding ModeNE0154601-00 A 7-5arp_intervalThis parameter specifies the ARP link monitoring frequency in milliseconds. WhenARP monitoring is used in an etherchannel compatible mode (modes 0 and 2), theswitch must be configured in a mode that evenly distributes packets across alllinks.When the switch is configured to distribute the packets in an XOR fashion, allreplies from the ARP targets are received on the same link, which could cause theother team members to fail. ARP monitoring should not be used with miimon. Avalue of 0 disables ARP monitoring. The default value is 0.arp_ip_targetThis parameter specifies the IP addresses to use as ARP monitoring peers whenarp_interval is greater than 0. These are the targets of the ARP request sentto determine the health of the link to the targets.Specify these values in ddd.ddd.ddd.ddd format. Multiple IP addresses mustbe separated by a comma. At least one IP address must be given for ARPmonitoring to function. The maximum number of targets that can be specifiedis 16. The default value is no IP addresses.downdelayThis parameter specifies the time, in milliseconds, to wait before disabling a slaveafter a link failure has been detected. This option is valid only for the miimon linkmonitor. The downdelay value must be a multiple of the miimon value;otherwise, the value will be rounded down to the nearest multiple. The defaultvalue is 0.lacp_rateThis parameter specifies the rate at which the link partner transmits LACPDUpackets in 802.3ad mode. Possible values are: Slow or 0: Request partner to transmit LACPDUs every 30 seconds(default). Fast or 1: Request partner to transmit LACPDUs every 1 second.QLogic Adapter Bonding Modes Under LinuxThere are several modes that can be used for bonding the QLogic adapter underLinux. Note that there are variations in support and usage with respect to thehardware and Linux distributions, and that not all the modes are favorable for agiven system and network topology.
