User Guide

1-17
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Chapter 1 Product Overview
Chassis Card Cages
For additional information about troubleshooting DC PEMs, see the
“Troubleshooting the DC-Input Power Subsystem” section on page 5-10.
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.