Cooling - Cisco ASR 5500 Installation Manual

ASR 5500 Hardware Platform Overview

Cooling

The ASR 5500 uses two types of fan tray units and a total of four fan trays per chassis – two front fan trays and two rear
fan trays. Air is drawn from the front and sides of the chassis and exhausted out the top rear and sides. Two fan trays are
mounted at the bottom of the chassis with another two at the top. The bottom fan trays incorporate replaceable
particulate air filters.
Slot Numbering
The rear slots are numbered 1 through 10 with slots 5 and 6 used for the chassis management cards. The front slots are
numbered 11 through 20. Lower slot numbers begin at the left side. There are no direct relationships between front and
rear cards.
The figure below shows the slot numbering sequence and the general layout of other components in the ASR 5500
chassis.
Figure 3. ASR 5500 Slot Numbering
Chassis ▀
ASR 5500 Installation Guide ▄
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