Nortel Networks 70 Series manual Attach any additional devices to the ports in your switch

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

3.Attach any additional devices to the ports in your switch.

For instructions to connect to additional switches or other devices, refer to “ Connecting Devices to the Switch” on page 3-5.

Mounting the BayStack 70-24T 10/100 Ethernet Switch in a Rack

The BayStack 70-24T 10/100 Ethernet Switch occupies a 1.6 unit (1.6u) rack space and can be installed in most standard 19-inch equipment racks. The rack must be grounded to the same grounding electrode used by the power service in the area. The ground path must be permanent and must not exceed 1 ohm of resistance from the rack to the grounding electrode.

Caution: When mounting this device in a rack, do not place units directly on top of one another in the rack. Each unit must be individually secured to the rack with appropriate mounting brackets. Mounting brackets are not designed to support multiple units.

To mount the BayStack 70-24T 10/100 Ethernet Switch in a standard 19-inch equipment rack, you need these tools and materials:

Two mounting brackets supplied from the Rack Mount Kit

Eight screws supplied from the Rack Mount Kit to attach the mounting brackets to the switch

Four screws and nylon washers supplied from the Rack Mount Kit to attach the mounting brackets to the rack

#1 Phillips screwdriver

#2 Phillips screwdriver

To install the switch in a rack:

1.Attach the mounting brackets to the sides of the switch as illustrated in Figure 3-1.

Hold a mounting bracket against each side of the switch and align the countersunk screw holes in the bracket with the bracket mounting holes in the switch.

2.Insert the screws provided in the Rack Mount Kit through each bracket and into the bracket mounting holes in the switch.

3-4

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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 MAC Address Quantities FeaturesModel MAC Addresses in Information Table 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 Product Specifications Appendix a Technical SpecificationsTable A-1 Technical Specifications Environmental Specifications Physical SpecificationsElectromagnetic Emissions Performance Specifications Safety Agency ApprovalsElectromagnetic Susceptibility 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