Chapter1 Product Overview
Cisco 7600 Internet Router Components
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Cisco7609 Internet Router Installation Guide
OL-5079-04

Component Hot Swapping

You can hot swap all modules (including the supervisor engine if you have a
redundant supervisor engine) and fans. You can add, replace, or remove modules
without interrupting the system power or causing other software or int erfaces to
shut down.
Note Although the FlexWAN module supports hot swapping, individual port
adapters do not. To replace port adapters, you must first remove the FlexWAN
module from the chassis and then install or replace port adapters as required.
Cisco 7600 Internet Router Components
This section describes the major hardware components for the C isco 7609
Internet Router.

Fan Assembly

The system fan assembly provides cooling air for the supervisor engine and the
switching modules. The fan assembly is located in the chassis. Figure1-2 shows
the direction of airflow into and out of the Cisco 7609 Internet Router. Sensors on
the supervisor engine monitor the internal air temperatures. If the air temperature
exceeds a preset threshold, the environmental monitor displays warning
messages.
If an individual fan within the assembly fails, the FAN STATUS LED turns red.
To replace a fan assembly, see the “Removing and Replacing the Fan Assembly”
section on page 5-12.
Note Refer to the Cisco 7600 Series Internet Router Software Configuration Guide
for information on environmental monitoring.