Power-up, Sequence, Powering-up, Switch | 3Com DUA1770-0AAA04

26CHAPTER 2: INSTALLING THE SWITCH

existing unit. If you do not initialize the unit, problems may be caused by conflicting Switch configurations.

■ When the Switch units are interconnected they are assigned a unit

	number dependent on which XRN Interconnect Cable end is
	connected to which Switch. That is, the Switch with the blue cable
	end will be assigned the identity of Unit 1 and the Switch with the
	yellow cable end will be assigned the identity of Unit 2.
	For a detailed description of how XRN Technology operates and
	implementation guidelines, please refer to the Implementation Guide on
	the CD-ROM that accompanies your Switch or on the 3Com Web site.

The Power-up	The following sections describe how to get your Switch powered-up and
Sequence	ready for operation.
Powering-up the	Use the following sequence of steps to power-up the Switch.
Switch

1Plug the power cord into the power socket at the rear of the Switch.

2Plug 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 During the Power On Self Test, all ports on the Switch are disabled and Operation of LEDs the LEDs light in a rapid 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

Color	State

Green	The Switch is powered-up and operating
	normally.
Yellow	The Switch has failed its Power On Self Test
	(POST) because of an internal problem.
Off	The Switch is not receiving power.

Image 26

3Com DUA1770-0AAA04 Power-up, Sequence, For a detailed description of how XRN Technology operates, Powering-up, Switch

Contents

SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Setting UP for Management PIN-OUTS Page About this Guide Convention Description ConventionsIcon Description Documentation documentation RelatedDocumentation 3Com recommends that you copy the Docs/referenceguide Please include the following information when commentingSuperStack 3 Switch 4900 Series Getting Started Guide Directory as a whole to maintain the structure of the files Introducing Introducing the Superstack 3 Switch 4900 Series Hardware Features Switches Switch Front View Detail Switch 4900 front view Switch 4924 front view Ports cross-over Module Status LEDs Power/Self Test LEDColor Indicates Port Status LEDs Unit LEDs Switch Rear Switch 4900 rear view Power Socket Switch 4924 rear view Switch units, it is returned to these defaults Default SettingsSupported by your Switch Installing the Switch Site Package ContentsChoosing a Suitable Desk, or attach it to a wall Flow through the side panels of the SwitchRack-mounting Have been fitted Repeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack-mounting Interconnecting two Switch 4900 units Switch Power-upPowering-up Sequence Power System output Your Switch RJ-45 connector is now a grounded portThat contain alignment pins can cause damage to your Switch Options Approved Gbic Switch 4950 GbicOperation Transceivers Fiber SC connector Type 4 Gbic with internal Eeprom fitted Inserting a Gbic Transceiver into a Switch Switch 4950 Gbic Operation Installing the Switch Setting UP for Management Setting Up Overview Manual IP Configuration Automatic IP Configuration Setting UP for Management Manually Configuring IP Information Pre-requisites Setting Up the Switch with IP Information Connecting the Workstation to the SwitchConfiguring the Workstation with IP Information Using Command Line Interface via Telnet Example top-level command line interface menu Connecting a workstation to the Switch via the console port 19,200 baud Data bits Setting Up the Switch with IP Information Automatically Configured IPViewing Pre-requisites Viewing IP Information via the Console Port Example top-level command line interface menu Refer to Setting Up Command Line Interface Management on Interface Management Command LineNetwork Using Telnet CLI Management via Choosing a Browser Setting Up WebInterface Over the Network Http//xxx.xxx.xxx.xxx Passwords Setting Up SnmpDefault Users User Default Name Password Access Level Security Device User Modify operation on the web interface Problem Solving For Technical Support information, see Appendix D Power LED does not light Solving ProblemsSolutions below On powering-up, the Power/Self Test LED lights yellow Fan failure warning message is received ProblemsSolving Hardware For further information about RMON, refer to Status Error message indicating that the Gbic transceiver is faulty Unit fails, no Snmp fan failure message is received Solving Communication Problems IP Addressing How do you obtain a registered IP Address? Safety Information Important Safety Information This must be approved for the country where it is used Important Safety Information 3CGBIC91 Gbic SX 3CGBIC92 Gbic LX ’information de Sécurité Importante Schko Appendix a Safety Information 3CGBIC91 Gbic SX 3CGBIC92 Gbic LX Wichtige Sicherheitsinformationen Der Netzstecker muß die Norm CEE 7/7 erfüllen Schuko Wichtige Sicherheitsinformationen Appendix a Safety Information Pin to 9-pin PC-AT Serial CableNull Modem Cable 9-pin to RS-232 25-pin RJ-45 Pin ConnectorsModem Cable Assignments Pin Number 10/100BASE-T 1000BASE-T Appendix B PIN-OUTS Power Consumption Physical DimensionsSafety Same unless otherwise stated Heat Dissipation Power SupplyProtocols Used for Administration Standards Supported Services Online Technical Username anonymous Europe, Middle East and Africa Asia, Pacific RimFrom this region, email From this region, enter the URL Asia, Pacific Rim Europe, Middle East and Africa Country Telephone Number Asia, Pacific Rim Country Telephone Number Latin America Index Numbers Passwords Regulatory Notices