Nortel Networks 70 Series manual RJ-45 10BASE-T/100BASE-TX Ethernet Ports

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Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches

RJ-45 10BASE-T/100BASE-TX Ethernet Ports

The RJ-45 10BASE-T/100BASE-TX Ethernet ports connect the switch to network devices using standard unshielded twisted-pair (UTP) cable. The BayStack 70 Series 10/100 Ethernet Switches does not support shielded twisted-pair (STP) cable. Each port adapts to the correct network speed of 10 Mb/s or 100 Mb/s through autonegotiation with the network interface card (NIC), hub, or other switch connected to the BayStack 70 Series 10/100 Ethernet Switches. By default, each Ethernet port is wired as an MDI-X port to connect end stations without using a crossover cable.

MDI/MDI-X Button

The MDI/MDI-X push button converts port 1 from an MDI-X (normal) port to an MDI (uplink) port to allow you to connect the switch to another Ethernet switch without a crossover cable.

Note: Observe standard networking guidelines when installing or connecting a BayStack 70 Series 10/100 Ethernet Switches to additional devices.

Refer to Appendix B, “Cables and Connectors,” for more information about MDI/MDI-X ports and cabling.

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Contents Installation and Reference for Copyright 1999 Nortel Networks Iii Restricted Rights Legend Statement of ConditionsNortel Networks NA Inc. Software License Agreement 206375-A Contents Chapter Troubleshooting Figures 206375-A Tables Xii Preface PurposeAudience Hard-Copy Technical ManualsHow to Get Help Technical Solutions Center Telephone NumberPage BayStack 70 Series 10/100 Ethernet Switches Overview Chapter IntroductionPhysical Description Front PanelFront Panel of the BayStack 70-8T 10/100 Ethernet Switch RJ-45 10BASE-T/100BASE-TX Ethernet Ports LEDs Description of Switch and Port Status LEDs Type Label Color Activity DescriptionRear Panel of the BayStack 70-24T 10/100 Ethernet Switch DC Power Adapter Model MAC Addresses in Information Table FeaturesMAC Address Quantities Buffer Sizes Model Buffer SizeExternal Power Adapters Model External Power AdapterPage Chapter Network Configuration Benefits of Using Switching TechnologyTypes of Ethernet Switches Desktop Switching BeforeSegment Switching Before After Extending a Network Bridging from 10BASE-T to 100BASE-TX Networks Bridging 10 Mb/s Networks to 100 Mb/s NetworksPower Workgroups Power Workgroup ConnectionsChapter Installation Package ContentsPower Specifications Operating EnvironmentInstalling the Switch Set the switch on a desktop or any other flat surfaceAttach any additional devices to the ports in your switch Connecting Devices to the Switch Installing the Switch in a RackConnecting Power Verifying Installation Checking the Diagnostic Displays BayStack 70-24T 10/100 Ethernet Switch LED DisplayDescription of Switch and Port Status LEDs Page Chapter Troubleshooting Using the LED DisplayPage Table A-1 Technical Specifications Appendix a Technical SpecificationsProduct Specifications Electromagnetic Emissions Physical SpecificationsEnvironmental Specifications Electromagnetic Susceptibility Safety Agency ApprovalsPerformance Specifications Page Appendix B Cables and Connectors Table B-1 RJ-45 Connector Pin Assignments10BASE-T/100BASE-TX UTP Cable RJ-45Straight-Through and Crossover Cables Figure B-1. Straight-Through Twisted-Pair CableIndex NumbersIndex-2