Transition Networks
CPSMP-205 User Guide
Two-position configuration switch explanation
The two-position configuration switch establishes PointSystem software or manual control of the power
supply.
When the configuration switch is in the management position, the power supply configuration can
be set to master or slave via software.
When the configuration switch is in the manual position, the power-supply configuration is set
manually to master or slave and cannot be changed via software.
When the configuration switch is in the master position, the power supply is the primary power
source for the chassis.
When the configuration switch is in the slave position (
additional power supply
), the power supply
is used for redundancy (
failover
) purposes, in the event of a master power-supply failure.
Configuring two power supplies in one chassis
To set up power supply redundancy, set one power supply to master that supplies power to the entire
chassis, and the other to slave for redundancy. In this mode, the slave power supply is in stand-by mode
and takes over in the event of a master (
primary
) power-supply failure. See Figure 3 below.
Figure 3: Two-Position Configuration Switch
IMPORTANT
:
In a chassis with multiple power supplies, one power supply must be set to master.
If both modules are set to slave neither will supply sufficient power to the chassis.
Power supply load sharing (
configuring two supplies as masters for load sharing in a chassis
) is
not recommended due to its unbalanced level of load sharing.
33xxx Rev. H
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