Cisco Systems GSR12-CSC=, GSR12-SFC= manual Product Overview, Cisco 12012 Router-Front View

Product Overview

Product Overview

The Cisco 12012 has two card cages; the upper card cage and the lower card cage. (Refer to Figure 1.) The upper card cage has 12 user-configurable slots available for line cards and a route processor (RP). One additional slot (rightmost slot) in the upper card cage is non-configurable; it is reserved for an alarm card. The line cards and the RP are not slot dependent; you can install the line cards and the RP in any of the first 12 available slots.

Figure 1 Cisco 12012 Router—Front View

Top blower module	Frame
(behind front cover)

Upper card cage

Air filter tray

Power supply bay

Bottom blower module (behind front cover)

Lower card cage (behind air filter)

H10476

The lower card cage, located behind the air filter, has five horizontal keyed slots for cards containing the switch fabric circuitry. The cards provide the physical pathway for data packet exchange between the line cards in the upper card cage.

There are two types of cards installed in the lower card cage; the clock and scheduler card and the switch fabric card. The clock and scheduler card is keyed for installation in either of the upper two slots in the lower card cage. The switch fabric card is keyed for installation in the lower three slots of the lower card cage. The cards in the lower card cage are also color-coded; the clock and scheduler cards have a light blue label attached and the switch fabric cards have a magenta label attached. You match the label on the card with a similar color-coded label attached to the slot in the lower card cage.

2Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions