The MII monitoring periodically inspects the information provided by the Media Independent
Interface. If the interface reflects the failure of a certain network device, the bonding driver
interprets that this particular device is down. Options related to MII monitors are:
miimon
Specifies the MII link monitoring frequency in milliseconds. The default value is 0, and this
will disable the MII monitor. On Linux® on Z, it is often set
to 1000.
use_carrier
Specifies whether or not miimon should use MII or ETHTOOL
ioctls vs. netif_carrier_ok() to determine the
link status. The default value is 1, which enables the use of
netif_carrier_ok(). This is supported by the qeth device driver on Linux on Z.
updelay
Specifies the time, in milliseconds, to wait before enabling a slave after a link recovery has
been detected. The updelay value should be a multiple of the
miimon value.
downdelay
Specifies the time, in milliseconds, to wait before disabling a slave after a link failure has
been detected. The downdelay value should be a multiple of the
miimon value.