
Chapter 5 Maintaining the Router
Powering Off the Router
Powering Off the Router
Unless otherwise noted, the maintenance tasks described in this chapter can be performed while the router remains powered on. Most Cisco XR 12404 router field replaceable units (FRUs) support online insertion and removal (OIR), which means they can be removed and installed
•Line cards and the fan tray assembly are
•PEMs and RPs also support OIR, but are
•The power distribution unit (PDU) and CSF card do not support OIR.
Use the following procedure to power off an AC- or a
Step 1 Turn off the power switches (AC) or circuit breaker switches (DC) on the PEMs. Step 2 Turn off the facility circuit breakers for power source lines connected to the PDU. Step 3 When the procedure requires that the router be disconnected from source power:
•
•
Step 4 Verify the following conditions:
•LEDs on the PEMs are off.
•LEDs on the RP, all line cards, and CSF are off.
•The fans in the fan module tray are off.
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