18 Installation ELS100-24TXG
Powering the Switch
To supply power to the switch, do the following:
1. Connect the power cord to the swi tch and to a gr ounde d thre e-pron g
wall outlet (Figure 2-4). See Appendix A, “Power Cord Set
Requirements,” for more information regarding spe cific international
power cord requirements.
Figure 2-4. Connecting the Power Cord to the Switch
2. Turn on the power switch.
The Power LED lights gr een (see Figure 1-1). If it does not, check to
make sure that the power cable is plugged in correctly and that the
power source is good.

Power-Up

When you turn the power on, the switch conducts a series of hardware
and software tests to verify correct operation. If a terminal or computer is
connected to the console por t, the r esults of the tes ts are di splayed on the
screen. If you want to display the results of the tests after the switch has
already been turned on, turn the power switch off and then back on.
The switch performs two basic types of tests at power-up. During this
time, the Test LED (see Figure 1-1) lights steady green. These tests are:
•Serial port
The serial console port test is the first test performed. If the switch
fails this test, no further tests ar e perform ed, and the con sole displ ays
no information.