30 CHAPTER 2: INSTALLING THE SWITCH
The Power-up
Sequence
The following sections describe how to get your Switch 4400
powered-up and ready for operation.
Powering-up the
Switch 4400
Use the following sequence of steps to power-up the Switch.
1 Plug the power cord into the power socket at the rear of the Switch.
2 Plug the other end of the power cord into your power outlet.
The Switch powers-up and runs through its Power On Self Test (POST),
which takes approximately 10 seconds.
Checking for Correct
Operation of LEDs
During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light in a set sequence.
When the POST has completed, check the Power/Self Test LED to make
sure that your Switch is operating correctly. Table 6
shows possible colors
for the LED.
Table 6 Power/Self Test LED colors
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 56.
Connecting a
Redundant Power
System
You can connect a SuperStack 3 Advanced Redundant Power System
(3C16071B) to the Switch. This unit, which is also known as an RPS, is
designed to maintain the power to your Switch if a power supply failure
occurs.
For normal redundancy, the Switch 4400 and Switch 4400 SE require one
Type 2A Power Module (part number 3C16074A). For full redundancy,
the Switch 4400 and Switch 4400 SE require two type 2A Power Modules
combined using a Type 2 Y-Cable. The Switch 4400 PWR (3C17205)
requires one Type 3 Power Module (3C16075) for normal redundancy
and two Type 3 Power Modules for full redundancy.
Color State
Green The Switch is powered-up and operating normally.
Yellow The Switch has failed its Power On Self Test.
Off The Switch is not receiving power.
DUA1720-3AAA05.book Page 30 Friday, March 7, 2003 11:53 AM
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