QLogic Adapter Bonding Modes Under Linux

9–Linux Configuration for Bonding Mode and Virtual LAN (VLAN) Linux Bonding Mode

arp_interval

This parameter specifies the ARP link monitoring frequency in milliseconds. When ARP monitoring is used in an etherchannel compatible mode (modes 0 and 2), the switch must be configured in a mode that evenly distributes packets across all links.

When the switch is configured to distribute the packets in an XOR fashion, all replies from the ARP targets are received on the same link, which could cause the other team members to fail. ARP monitoring should not be used with miimon. A value of 0 disables ARP monitoring. The default value is 0.

arp_ip_target

This parameter specifies the IP addresses to use as ARP monitoring peers when arp_interval is greater than 0. These are the targets of the ARP request sent to determine the health of the link to the targets.

Specify these values in ddd.ddd.ddd.ddd format. Multiple IP addresses must be separated by a comma. At least one IP address must be given for ARP monitoring to function. The maximum number of targets that can be specified is 16. The default value is no IP addresses.

downdelay

This parameter specifies the time, in milliseconds, to wait before disabling a slave after a link failure has been detected. This option is valid only for the miimon link monitor. The downdelay value must be a multiple of the miimon value; otherwise, the value will be rounded down to the nearest multiple. The default value is 0.

lacp_rate

This parameter specifies the rate at which the link partner transmits LACPDU packets 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 Linux

There are several modes that can be used for bonding the QLogic adapter under Linux. Note that there are variations in support and usage with respect to the hardware and Linux distributions, and that not all the modes work for a given system and network topology.

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3000, 3100 specifications

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