Overheat Recovery Process; Saved Power Management Configurations - 3Com 4007 Implementation Manual

Saved Power
Management
Configurations

Overheat Recovery Process

Overheat recovery occurs when the temperature sensor that detected an
overheat condition reports that internal chassis temperature is at or
below the overheat threshold.
When overheat recovery is initiated, modules that were powered off to
alleviate the overheat condition power on to the limit of the current
power budget.
The overheat recovery process proceeds as follows:
The EME powers on modules, in order, from the lowest slot number to
the highest slot number.
The EME powers on modules with the highest power class setting
first. If two or more modules have the same power class setting, they
power on from the lowest slot number to the highest slot number.
The EME stores:
Saved power management configuration data for all installed network
modules in on-board EME non-volatile RAM (NVRAM).
Unmanaged power allocation data that describes the type (per
voltage) and the amount of power (watts) that are available to
installed modules.
When the chassis powers on or after a chassis reset:
The EME uses saved power management configuration data to verify
that power configurations for installed modules precisely match those
in effect prior to the chassis reset.
If necessary, the EME uses the saved data to restore lost module power
configurations.
The EME saves the power management configuration data that is listed in
Table 30.

Saved Power Management Configurations

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