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Figure 3- 6. Front Panel of DES-70011 RPS Unit and LED Indicators
LED Indicators for RPS Modules
AC OK
Power OK
AC Power Redundant Power Supplies
The chassis includes two pre-installed power supplies removable from the front with an additional RPS
slot available for a third module. The connector for each power supply is embedded on the rear panel.
The LED indicators for each power supply are located in the center of the front panel The LED
indicators will light green when the unit functioning normally. An amber LED indicator indicates the
RPS is not functioning properly.
Push Buttons
Two recessed push buttons are visible on the front panel of the DES-7003 CPU module a System
Buzzer and Hot Swap button. Each switch module, including DES-7003 CPU modules, has a Hot
Swap push button.
Push buttons are recessed to avoid accidental activation. They can be activated by gently depressing
them with a ballpoint pen or other suitable instrument. The functions activated by the buttons are
described as follows:
•
System Buzzer (DES-7003 CPU modules only) A warning sounds when any system fans fail
or when the fan tray unit has been removed. Depressing the System Buzzer button will silence
the fan fail alarm.
Hot Swap This is used to initiate a hot swap of the module (See the section on hot swapping modules
below).
Fans
For the DES-7000 chassis, there are a total of 8 system fans arranged on two plains. At the top of the
backside of the Switch chassis are four fans (dimensions = 92 x 92 x 25 mm) arranged in a single
horizontal row spanning the width of the Switch. The upper fans run any time power is supplied to the
chassis. The remaining 4 fans (dimensions = 172 x 150 x 51 mm) are located in a separate slide-in fan
tray module oriented horizontally below the module slots. The fan tray fans are positioned to maintain
adequate airflow between installed switch modules. The fan tray fans are power on or off as needed
automatically by the CPU using temperature information from built-in sensors.
The DES-7100 has a fan tray module with 6 fans (dimensions = 80 x 80 x 20 mm) oriented vertically
on the right side of the switch chassis. The fan tray fans power on or off as needed automatically by
the CPU using temperature information from built-in sensors. Fan trays may be replaced from the front
of the chassis while the switch is powered on.
Identifying External Components
DES-7000/DES-7100 Layer 2 Switch User's Guide
Steady green light indicates normal function.
A dark indicator means the unit is not receiving power or a problem
exists.
Steady green light indicates normal output level.
Amber light indicates abnormal output level.
An RPS failure will also trigger the system buzzer (alarm).
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