3Com 3C16987 manual Color Indicates Port Status LEDs, Unit LEDs, Power/Self Test LED

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14CHAPTER 1: INTRODUCING THE SWITCH 3300 SM

Table 3	LED behavior

LED	Color	Indicates

Port Status LEDs
Packet	Yellow	Packets are being transmitted/received on the port.
	Off	No packets are being transmitted/received on the
		port.
Status	Green	A link is present, and the port is enabled.
	Green flashing	A link is present, but the port is disabled.
	Off	No link is present.
Unit LEDs
1–8	Green	The Switch forms a stack with other Switch units;
		the LED indicates the position of the Switch in the
		stack and that a link is present. Note that although
		there are eight LEDs, only four Switch units can be
		stacked at present.
	Off	The Switch is stand-alone.
Power/Self Test LED
	Green	The Switch is powered-up.
	Green flashing	The Switch is either downloading software or is
		initializing (which includes running a Power On Self
		Test).
	Yellow	The Switch has failed its Power On Self Test.
	Off	The Switch is not receiving power.

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Contents User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents PIN-OUTS Support from 3Com Returning Products for Repair Page About this Guide Convention Description ConventionsIcon Description Related DocumentationComments YearCompliance ProductIntroducing the Switch 3300 SM About SuperStack Switch 3300 SM Summary of FeaturesSwitch 3300 SM Front View Detail 10BASE-T / 100BASE-TX PortsUnit LEDs Power/Self Test LEDColor Indicates Port Status LEDs Switch 3300 SM Rear View Detail Power SocketUnits on Network ConfigurationSwitch 3300 SM as a ExamplesSwitch Using the Switch as a collapsed backboneSwitch Fast Ethernet configuration rules Configuration Rules with Full Duplex Configuration Rules for Gigabit Ethernet Installing the Switch Rack-mounting Repeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack mounting3C16965. Contact your supplier for details Stacking UnitsTreated as a single manageable unit with one IP address You need only one SuperStack II Switch 3300 MM per stack Stack of three units Switch 3300 SM Power-upPowered-up and ready for operation SequencePort, you need a cross-overcable. Most of the 10BASE-T ChoosingCorrect Cables Color StateProblem Managing SwitchNetwork. For information on managing the Switch using GuideSafety Information Personnel only Important SafetyInformation Important Safety Information Personnel qualifié ’information deSécurité Importante Plus étroites’information de Sécurité Importante Wichtige Sicherheitsinformat ionen Warnhinweis Faseroptikanschlüsse Optische Sicherheit Appendix a Safety Information PC-AT Serial Cable PIN-OUTSNull Modem Cable Pin to RS-232 25-pinModem Cable ConnectorsPin Number Signal Function RJ45 PinPin Number Signal Function Appendix B PIN-OUTS Technical Specifications Vlan MIB RFC Technical Support ServicesServices Online TechnicalUsername anonymous 408 727Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific RimCountry Telephone Number Fax Number Glossary Endstation BroadcastCollision EthernetLine speed See baud Protocol LoopMulticast RepeaterSTP See Spanning Tree Protocol STP Glossary Index Index 3Com Corporation Limited Warranty Included Services Limitation of Liability EMC Statements