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Figure 42. 8260 with 4 Power Supplies
5.2 Power Class
Power class can be considered as a power priority which ranges from 1 to 10.
10 is the highest priority and 1 is the lowest priority.
You may may set the power class for each 8260 module using the following
management module command:
SET POWER SLOT {slot} CLASS {1 to 10}
In the event of failure of one or more power supplies which results in power
deficit (that is, the available power is less than the power requirements by all the
currently installed modules) the Controller module will power down a number of
8260 media modules with the lowest power class to bring down the level of
power consumption to the level of available power supplied by the remaining
operational power supply components.
When several modules have the same power class, the 8260 media modules will
be powered down from slot 17 to slot 1.
Note: Modules with power class 10 will not be powered down automatically
under any circumstances.
The power class is also used during the hub power-up. When an 8260 is
powered up, the Controller module will be powered up first, it will then power up
all the media modules with the highest power class (power class 10) starting
74 8260 Multiprotocol Intelligent Switching Hub