Thresholds, Alarms, And Abnormal Acoustic Conditions; Power Supply Module Overview - Cisco Catalyst 9600 Series Hardware Installation Manual

Thresholds, Alarms, and Abnormal Acoustic Conditions

• If two or more fans fail, the entire fan tray operates at full speed after one minute. Further, the fan tray
• If the temperature sensor fails or communication with the temperature sensor fails, the worst case operating
• If the pressure sensor fails or communication with the pressure sensor fails, the worst case operating
Thresholds, Alarms, and Abnormal Acoustic Conditions
Under normal operating conditions, when none of the temperature alarms have been triggered, hardware
controls fan speed. If any of the system temperature alarms are triggered, software displays a syslog message
indicating that the temperature is high and the fans are operating at higher speed. Refer to the System
Management section of the software configuration guide for more information.
In case of a fan failure, you must replace the fan tray within 120 seconds or power down the system. If the
temperature exceeds the shutdown threshold, software powers the system down.
When the fan tray operates at full speed, increased noise levels may be expected. The fan tray may operate
at full speed in these circumstances:
• If two or more fans have failed
• If the STATUS LED remains red for more than one minute
• If there is a hardware failure
• If the software watchdog timer is triggered

Power Supply Module Overview

The switch chassis has four redundant power supply slots that operates with one to four power supply modules.
The chassis supports field-replaceable AC-input and DC-input power supply modules.
The power supply modules generates 12Vdc output power and distributes it to the line cards and supervisor
modules. The power supplies distribute power to all slots using an internal bus-bar based power distribution
mechanism. All power supply modules have internal fans and support front-to-rear airflow.
The following are the supported power supply modules:
Table 2: Power Supply Modules Supported on Cisco Catalyst 9600 Series Switches
Part Number
C9600-PWR-2KWAC (=)
C9600-PWR-2KWDC (=)
Cisco Catalyst 9600 Series Switches Hardware Installation Guide
6
must be replaced. The individual fans are not field replaceable, you must replace the fan tray.
temperature is assumed.
pressure is assumed.
Description
Cisco Catalyst 9600 Series 2000W AC Power Supply
Cisco Catalyst 9600 Series 2000W DC Power Supply
Product Overview