-
mode= —
Specifies one of four policies allowed for the bonding module. Acceptable
values for this parameter are:
0 — Sets a round-robin policy
for fault tolerance and load balancing. Transmissions are
received and sent out sequentially on each bonded slave
interface beginning with the first one available.
1 — Sets an active-backup policy
for fault tolerance. Transmissions are received and sent
out via the first available bonded slave
interface. Another bonded slave interface is only used if
the active bonded slave interface fails.
2 — Sets an XOR (exclusive-or)
policy for fault tolerance and load balancing. Using this
method, 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.
3 — Sets a broadcast policy for
fault tolerance. All transmissions are sent on all slave
interfaces.
4 — Sets an IEEE 802.3ad dynamic
link aggregation policy. Creates aggregation groups that
share the same speed and duplex settings. Transmits and
receives on all slaves in the active aggregator. Requires
a switch that is 802.3ad compliant.
5 — Sets a Transmit Load
Balancing (TLB) policy for fault tolerance and load
balancing. The 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.
6 — Sets an Active Load
Balancing (ALB) policy for fault tolerance and load
balancing. Includes transmit and receive load balancing
for IPV4 traffic. Receive load balancing is achieved
through ARP negotiation.
-
miimon= —
Specifies (in milliseconds) how often MII link monitoring
occurs. This is useful if 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> | grep
"Link detected:"
In this command, replace
<interface-name> with the
name of the device interface, such as eth0, not the bond interface. If MII is supported,
the command returns:
Link detected: yes
If using a bonded interface for high availability, the module
for each NIC must support MII.
Setting the value to 0 (the
default), turns this feature off. When configuring this
setting, a good starting point for this parameter is 100.
-
downdelay= —
Specifies (in milliseconds) how long to wait after link
failure before disabling the link. The value must be a
multiple of the value specified in the miimon parameter. The value is
set to 0 by default,
which disables it.
-
updelay= —
Specifies (in milliseconds) how long to wait before
enabling a link. The value must be a multiple of the
value specified in the miimon parameter. The value is
set to 0 by default,
which disables it.
-
arp_interval= —
Specifies (in milliseconds) how often ARP monitoring
occurs.
If using this setting while in mode 0 or 2 (the two load-balancing
modes), the network switch must be configured to
distribute packets evenly across the NICs. For more
information on how to accomplish this, refer to
/usr/share/doc/kernel-doc-<kernel-version>/Documentation/networking/
bonding.txt
The value is set to 0 by default,
which disables it.
-
arp_ip_target= —
Specifies the target IP address of ARP requests when the
arp_interval parameter
is enabled. Up to 16 IP addresses can be specified in a
comma separated list.
-
primary= —
Specifies the interface name, such as eth0, of the primary
device. The 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/share/doc/kernel-doc-<kernel-version>/Documentation/networking/
bonding.txt
for more information.
-
multicast= — Specifies an
integer value for the type of multicast support desired.
Acceptable values for this parameter are:
0 — Disables multicast support.
1 — Enables multicast support,
but only on the active slave.
2 — Enables
multicast support on all slaves (the default).