Red Hat ENTERPRISE LINUX 3 Reference Manual page 307

Appendix A. General Parameters and Modules
— Sets an XOR (exclusive-or) policy for fault tolerance and load balancing. Using this method
2
•
the interface matches up the incoming request's MAC address with the MAC address for one of
the slave NICs. Once this link is established, transmissions are sent out sequentially beginning
with the first available interface.
— Sets a broadcast policy for fault tolerance. All transmissions are sent on all slave interfaces.
3
•
— Sets a IEEE 802.3ad dynamic link aggregation policy. Creates aggregation groups that share
4
•
the same speed and duplex settings. Transmits and receives on all slaves in the active aggregator.
Requires a switch that is 802.3ad compliant.
— Sets a Transmit Load Balancing (TLB) policy for fault tolerance and load balancing. The
5
•
outgoing traffic is distributed according to the current load on each slave interface. Incoming
traffic is received by the current slave. If the receiving slave fails another slave takes over the
MAC address of the failed slave.
— Sets a Active Load Balancing (ALB) policy for fault tolerance and load balancing. Includes
6
•
transmit and receive load balancing for IPV4 traffic. The receive load balancing is achieved by
ARP negotiation.
— Specifies (in milliseconds) how often MII link monitoring occurs. This is useful if
• miimon=
high availability is required because MII is used to verify that the NIC is active. To verify that the
driver for a particular NIC supports the MII tool, type the following command as root:
ethtool interface-name
In this command, replace
, not the a
eth0 bond
Link detected: yes
If using a bonded interface for high availability, the module for each NIC must support MII.
Setting the value to
starting point for this parameter is
— Specifies (in milliseconds) how long to wait after link failure before disabling the
• downdelay=
link. The value must be a multiple of the value specified in the
to by default, which disables it.
0
— Specifies (in milliseconds) how long to wait before enabling a link. The value must
• updelay=
be a multiple of the value specified in the
disables it.
• arp_interval=
If using this setting while in
configured to distribute packets evenly across the NICs. For more information on how to accomplish
this, refer to
/usr/src/linux-2.4/Documentation/networking/bonding.txt
The value is set to
• arp_ip_target=
parameter is enabled. Up to 16 IP addresses can be specified in a comma separated list.
— Specifies the interface name, such as
• primary=
device is the first of the bonding interfaces to be used and is not abandoned unless it fails. This
setting is particularly useful when one NIC in the bonding interface is faster and, therefore, able to
handle a bigger load.
This setting is only valid when the bonding interface is in active-backup mode. Refer to
/usr/src/linux-2.4/Documentation/networking/bonding.txt
2. This document is installed with the
2. This document is installed with the
| grep "Link detected:"
interface-name
interface. If MII is supported, the command returns:
(the default), turns this feature off. When configuring this setting, a good
0
.
100
— Specifies (in milliseconds) how often ARP monitoring occurs.
or
mode 0 2
by default, which disables it.
0
— Specifies the target IP address of ARP requests when the
kernel-source
kernel-source
with the name of the device interface, such as
parameter. The value is set to
miimon
(the two load-balancing modes) the network switch must be
, of the primary device. The
eth0
package.
package.
parameter. The value is set
miimon
by default, which
0
arp_interval
2 for more information.
289
2
.
primary