Chapter 5 Maintaining the Router
Powering Off the Router
5-2
Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide
OL-17440-01
Prerequisites and Preparation
Before you perform any of the procedures in this chapter, be sure that you:
•
Review the
“Safety Guidelines” section on page 2-2
.
•
Read the safety and ESD-prevention guidelines described in the
“Preventing
Electrostatic Discharge Damage” section on page 2-4
.
•
Ensure that you have all of the necessary tools and equipment before
beginning the procedure.
•
Have access to the following documents during the installation:
–
Regulatory Compliance and Safety Information for Cisco 12000 Series
Routers
publication that shipped with the router.
Powering Off the Router
Most field-replaceable units (FRUs) can be removed and replaced with the power
on and the system operating. This is known as online insertion and removal (OIR).
Power supplies, line cards, the RP, CSCs, SFCs, and alarm cards all support OIR.
Unless otherwise noted, the maintenance tasks described in this chapter can be
performed while the router remains powered on.
In some cases it may be necessary to power off the router, for example, to upgrade
power supplies or to replace a power shelf. Use the following procedure to power
off the router.
Step 1
Set the power switch on each power supply to the off (0) position.
Step 2
Power off all circuit breakers for the source power lines connected to the power
supplies.
Step 3
Verify that the PWR OK indicator on each power supply is off.
Step 4
Verify that the OK indicator on each blower module is off.