Chapter 5 Maintaining the Router
Removing and Replacing AC and DC Power Subsystem Components
5-14
Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide
OL-17440-01
Removing and Replacing AC and DC Power
Subsystem Components
The Cisco XR 12416 router supports online insertion and removal (OIR). If you
are replacing a redundant power supply, you can remove and install the power
supply while the system remains powered on without causing an electrical hazard
or damage to the system. This feature enables you replace a power supply while
the
system maintains all routing information and ensures session preservation.
However, to maintain operational redundancy, proper cooling, and meet EMI
compliance standards, you must have all three (standard) or four (optional)
working power supplies installed. When you remove a failed power supply with
the router in operation, perform the replacement as quickly as possible. Make sure
you have the tools and the replacement power supply ready before beginning the
removal and installation procedure.
Removing and Replacing an AC Power Supply
This section provides the procedure to remove an AC power supply from the
standard single-level AC power shelf. The procedure to remove an AC-input
power supply from the optional double-level AC-input power shelf are identical
to these; only the slot locations for AC-input power supplies are different.