/sys$common/syshlp/LANCP$HELP.HLB — SET DEVICE Qualifiers (LAN Failover Devices), /ENABLE
Enables a Failover set, which activates the Logical LAN device.
The LAN Failover driver selects a LAN device from the LAN
Failover set as the active device and then allows I/O to the
Logical LAN device.