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Chapter 1 Product Overview
Power Subsystems
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
Note Cisco 12006 and Cisco 12406 routers can be either AC powered or DC powered;
the router cannot accept two different types of power modules at the same time.
For detailed handling and replacement instructions for the Cisco 12006 and
Cisco 12406 router power supplies or PEMs, see Chapter 6, “Maintaining the
Router,” or refer to the appropriate configuration note for the power supply or
PEM that is shipped from the factory as an FRU.
Note Cisco 12006 and Cisco 12406 routers operating from an AC power source can be
converted to operate from a DC power source, and vice versa. The conversion can
be done in the field, but the system must be powered down. For more information
about this conversion process, see the “Converting the Power System” section in
the Cisco 12006 and Cisco 12406 Router Power System Procedures Guide.
AC Power Subsystem
The AC power subsystem consists of the following system components:
• AC PDU (one)
• AC-input power supplies (one for nonredundant operation; two for redundant
operation)
Caution To ensure that the chassis configuration complies with the required power
budgets, use the on-line power calculator. Failure to properly verify the
configuration may result in an unpredictable state if one of the power units fails.
Contact your local sales representative for assistance.
AC PDU
Facility AC power connects to AC-powered Cisco 12006 and Cisco 12406 routers
though the AC PDU on the chassis rear panel. (See Figure 1-2 and Figure 1-12.)