Nortel Networks 5625HD Using Shielded Twisted Pair Cables

Using the Model 5625HD EtherSpeed Switch Module

B-6 206208-A

Using Shielded Twisted Pair Cables

Type 1 shielded twisted pair (STP) cabling also o pera tes with 10B ASE-T Et hernet

and 100BASE-TX Fast Ethernet. Type 1 STP cable consists of tinned-copper

braided shield surrounding two data-grade twisted pairs of #22 A WG solid coppe r

conductors that have individual or S-shaped shields of aluminum-backed

insulating tape or metallized Mylar foil.

Type 1 cable generally is used between wiring closets or from the wiring closet

patch panel to the work area wall outlet.

Type 1 cable generally is terminated with an IBM four-position (MIC) data

connector. Nortel Networks Fast Ethernet supports 100BAS E-TX Fast Ethernet

over STP media through the application of a specialized balun media adapter, also

referred to as a Type 1 balun (Figure B-4). When adapting 150-ohm STP cable

plants for Fast Ethernet applications, balun media adapters are r equired at bo th the

hub and station ends of the STP cable plant. Media adapters (such as AMP part

number 558421-1) are available that plug into the RJ-45 patch cable connectors,

allowing the patch cable to connect with an IBM data connector. The media

adapter and patch cable provide impedance matching between UTP (100-ohm)

and STP (150-ohm) cabling.

Figure B-4. Fast Ethernet Type 1 Balun Media Adapter

Note: A balun media adapter is required when connecting 100-ohm RJ-45

100BASE-TX ports to a 150-ohm STP cable plant. This adapter provides

impedance matching between UTP (100-ohm) and STP (150-ohm) cabling.

Note: For additional information about AMP Type 1 balun media adapters

(part number 558421-1), contact your AMP reseller or distributor. The user

should verify that the combination of the STP cable plant and the impedance-

matching baluns meets the requirements of the applicable LAN standard.

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Contents

Main ii Copyright 1999 Nortel Networks Trademarks Statement of Conditions USA Requirements Only European Requirements Only Japan/Nippon Requirements Only Taiwan Requirements Canada Requirements Only Nortel Networks Software License Agreement iv Page Page Contents Page Page Page Figures Page Page Page Preface Before You Begin Related Publications Page How to Get Help Chapter 1 Overview of the Model 5625HD Switch Module Overview of the EtherSpeedII Switch Module Page Features of the Model 5625HD Switch Module Page Overview of the Model 5625HD Switch Module 206208-A 1-5 Physical Description Figure 1-2. Model 5625HD EtherSpeedII 24-Port Autonegotiating Switch Module Switch Configuration and Management Spanning Tree Protocol 802.1d Support Support for Virtual LANs Filtering Hot-Swapping Capability About the Model 500xBH/BHC Backplane 1-10 LEDs Port LEDs Figure 1-5. LEDs on the Model 5625HD Switch Module 10/100 Mb/s UTP Autonegotiation Ports 5625HD Page Connecting to Ethernet Hubs and Network Devices Network Configuration Examples 2-4 Figure 2-1. Network Example Giving a Server a Dedicated Port 2-6 Replacing a Bridge Figure 2-3. Replacing a Bridge Desktop Switch with ATM Uplinks 2-8 Figure 2-4. Desktop Switch with ATM Uplinks Segment Switch in an Enterprise Network Desktop Switch and Frame-to-Cell Converter Multi-Link Trunking Default Port Configuration Predefined SpeedView Configurations Chapter 3 Installing the Model 5625HD Switch Module Arranging Modules in a Model 500xBH/BHC Chassis Page Page Required Tools and Equipment Installing the Switch Module Page Checking LEDs Making 10/100 Mb/s Connections Connecting Terminals and Management Stations Page Checking the Module Connection to the Backplane Removing and Replacing the Switch Module Conditions for Replacing a Switch Module Removing a Switch Module Installing the Replacement Switch Module Reconfiguring the Replacement Switch Module Page Chapter 4 Troubleshooting Preliminary Steps Previous Module Configuration Incompatibility Model 5625HD Switch Module Startup Failure Port Connection Problems Page Page Appendix A Technical Specifications Using the Model 5625HD EtherSpeed Switch Module A-2 Technical Specifications Page Appendix B Cables and Connectors UTP Cable Length Limitations UTP Cabling 10BASE-T/100BASE-TX MDI Ports and MDI-X Ports Page B-4 UTP Cables and Connectors Figure B-3. 10BASE-T/100BASE-TX Ethernet UTP Crossover Cable TableB-1. 10BASE-T/100BASE-TX MDI-X Port Pin Assignments Using Category 5 Unshielded Twisted Pair Cables Using Shielded Twisted Pair Cables 206208-A C-1 Port LEDs Appendix C LEDs Figure C-1. LED Display for the Model 5625HD Switch Module 5625HD 10/100 Switch Host Port Status C-2 TableC-1. LEDs on the Model 5625HD Switch Module RJ-45 LEDs Page Index Numbers A B C D E F H I R S T U V