3Com 3C16987 manual Configuration Rules with Full Duplex

Page 21

Configuration Rules with Full Duplex

21

The key topology rules are:

■Maximum UTP cable length is 100m (328ft) over Category 5 cable.

■A 412m (1352ft) fiber run is allowed for connecting switch-to-switch, or endstation-to-switch, using half-duplex 100BASE-FX.

■A total network span of 325m (1066ft) is allowed in single-repeater topologies (one hub stack per wiring closet with a fiber run to the collapsed backbone). For example, a 225m (738ft) fiber link from a repeater to a router or switch, plus a 100m (328ft) UTP link from a repeater out to the endstations.

Configuration Rules The Switch provides full duplex support for all its ports. Full duplex allows

with Full Duplex packets to be transmitted and received simultaneously and, in effect,

doubles the potential throughput of a link.

With full duplex, the Ethernet topology rules are the same, but the Fast

Ethernet rules are:

■Maximum UTP cable length is 100m (328ft) over Category 5 cable.

■A 2km (6562ft) fiber link is allowed for connecting switch-to-switch, or endstation-to-switch.

Image 21

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 Conventions Icon DescriptionConvention Description Documentation RelatedCompliance YearComments ProductIntroducing the Switch 3300 SM Summary of Features About SuperStack Switch 3300 SM10BASE-T / 100BASE-TX Ports Switch 3300 SM Front View DetailPower/Self Test LED Color Indicates Port Status LEDsUnit LEDs Power Socket Switch 3300 SM Rear View DetailUnits on Switch 3300 SM as a ConfigurationNetwork ExamplesUsing the Switch as a collapsed backbone SwitchSwitch Fast Ethernet configuration rules Configuration Rules with Full Duplex Configuration Rules for Gigabit Ethernet Installing the Switch Rack-mounting Fitting a bracket for rack mounting Repeat steps 2 and 3 for the other side of the SwitchStacking Units Treated as a single manageable unit with one IP address3C16965. Contact your supplier for details You need only one SuperStack II Switch 3300 MM per stack Stack of three units Powered-up and ready for operation Power-upSwitch 3300 SM SequenceCorrect Cables ChoosingPort, you need a cross-overcable. Most of the 10BASE-T Color StateProblem Network. For information on managing the Switch using SwitchManaging GuideSafety Information Important Safety InformationPersonnel only Important Safety Information Sécurité Importante ’information dePersonnel qualifié Plus étroites’information de Sécurité Importante Wichtige Sicherheitsinformat ionen Warnhinweis Faseroptikanschlüsse Optische Sicherheit Appendix a Safety Information Null Modem Cable PIN-OUTSPC-AT Serial Cable Pin to RS-232 25-pinPin Number Signal Function ConnectorsModem Cable RJ45 PinPin Number Signal Function Appendix B PIN-OUTS Technical Specifications Vlan MIB RFC Services ServicesTechnical Support Online Technical408 727 Username anonymousCountry Telephone Number Asia, Pacific Rim Europe, South Africa, and Middle EastCountry Telephone Number Fax Number Glossary Collision BroadcastEndstation EthernetLine speed See baud Multicast LoopProtocol RepeaterSTP See Spanning Tree Protocol STP Glossary Index Index 3Com Corporation Limited Warranty Included Services Limitation of Liability EMC Statements