Router Installation Guide

Chapter 1 Product Overview
Chassis Card Cages
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Cisco XR 12416 Router Installation Guide
OL-13833-01
The status LEDs on a DC PEM provide information about the current operational
status of the power supply:
• PWR OK (green)—Indicates that the power supply module is operating
normally.
• FAULT (yellow)—Indicates that a fault is detected within the PEM.
• TEMP (yellow)—Indicates the PEM is in an overtemperature condition and
shutdown has occurred.
For additional information about troubleshooting DC PEMs, see the
“Troubleshooting a DC Power Supply” section on page 4-10.
Chassis Card Cages
There are three integral card cages in the chassis: the upper card cage, the lower
card cage, and the switch fabric card cage (see Figure 1-1).
Upper Card Cage
The upper card cage has eight user-configurable slots that support a combination
of line cards, an alarm card, and an RP.
• Alarm—The far left slot is a dedicated slot for an alarm card.
• Slots 0 through 6—Can be populated with any line cards supported by the
router.
• Slot 7—The far right slot is reserved for the RP.