3Com 3C16980 User Guide - Page 29
The Power-up Sequence, Connecting a Redundant Power System, Powering-up the Switch 3300
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The Power-up Sequence 29 The Power-up Sequence The following sections describe how to get your Switch 3300 powered-up and ready for operation. Connecting a Redundant Power System You can connect a SuperStack II Advanced Redundant Power System (part number 3C16071) 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 unit requires one Type 2 Power Module (part number 3C16074). For full redundancy, the unit requires two Type 2 Power Modules combined using a Type 2 Y-Cable (part number 3C16078). CAUTION: The Switch can only use a SuperStack II Advanced Redundant Power System output. Powering-up the Switch 3300 Use the following sequence of steps to power-up the Switch. CAUTION: The Switch has no ON/OFF switch; the only method of connecting or disconnecting main power is by connecting or disconnecting the power cord. 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 12 seconds. Checking for Correct Operation During the Power On Self Test, all ports on the Switch are disabled and the LEDs light in the following sequence: s All unit LEDs light s Module LEDs light s Port Status LEDs light in a rapid cycle When the POST has completed, check the Power/Self Test LED to check that your Switch is operating correctly. Table 4 shows possible colors for the LED.