3Com 3C16987 manual Stacking Units, Treated as a single manageable unit with one IP address

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26CHAPTER 2: INSTALLING THE SWITCH

Stacking Units	Units in the Switch 1100/3300 family can be stacked together and then
	treated as a single manageable unit with one IP address.
	The Matrix Port on the rear of the Switch allows you to connect two
	Switch units back-to-back. For this you need a Matrix Cable (part number
	3C16965). Contact your supplier for details.
	The Switches in a stack are numbered 1 to 4, from the bottom up, for
	management purposes. The SuperStack II Switch 3300 MM will always be
	identified as Unit 1 and should therefore be positioned at the bottom of
	the stack.

Stacking Two Units You can stack two Switch units with a single Matrix Cable. To do this:

1Power-off both units.

2Arrange the units as required. They can be rack-mounted or free-standing; if you choose to have them free-standing, remember to position the rubber feet as detailed in “Placing Units On Top of Each Other” on page 25. When positioning the units, note that Matrix Cables are 1m (3.28ft) long.

3Connect one end of the Matrix Cable to the Matrix Port of the top Switch, and the other end to the Matrix Port of the lower Switch (See Figure 8).

4If you use the management software of the units:

■Ensure that both units have the same version of management software

■Ensure that you re-configure the stack-wide features on both units

For more information about management software, see “Managing the

Switch” on page 32.

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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