3Com 3226 Getting Started - Page 23
Placing Units On Top of Each Other, The Power-up Sequence, Powering-up the Switch - software upgrade
UPC - 662705470511
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Placing Units On Top of Each Other 23 Placing Units On Top of Each Other If the Switch units are free-standing, up to eight units can be placed one on top of the other. If you are mixing a variety of 3Com Switch and Hub units, the smaller units must be positioned at the top. If you are placing Switch units one on top of the other, you must use the self-adhesive rubber pads supplied. Apply the pads to the underside of each Switch, sticking one in the marked area at each corner. The Power-up Sequence The following sections describe how to get your Switch powered-up and ready for operation. Powering-up the Use the following sequence of steps to power-up the Switch. 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. 3 The Power / Self Test LED will flash green for approximately 60 seconds. 4 When the unit is ready, the Power / Self Test LED lights green. The Switch powers-up and runs through its Power On Self Test (POST), which takes approximately 60 seconds. Checking for Correct Operation of LEDs During the Power On Self Test, all ports on the Switch are disabled. When the POST has completed, check the Power and Self Test LEDs to make sure that your Switch is operating correctly. Table 6 shows possible colors for the LED. Table 6 Power / Self Test LED colors Color Green Green flashing Yellow Off State The Switch is powered-up and operating normally. The Switch is starting up or the Switch software is being upgraded. The Switch is reporting a fault (see Chapter 4, "Problem Solving"). The Switch is not receiving power or there is a fault with the Power Supply Unit. If there is evidence of a problem, see "Solving Problems Indicated by LEDs" on page 46.