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iii

1 Introducing the Switch

Front of the Switch .............................................. 1-2

Network Ports ..............................................1-3

LEDs ...................................................... 1-3

Back of the Switch .............................................. 1-4

Power Connector ...........................................1-4

Switch Features ................................................1-5

2 Installing the Switch

Included Parts ..................................................2-1

Installation Precautions ......................................2-3

Installation Procedures ..........................................2-4

1. Prepare the Installation Site ................................ 2-5

2. Verify the Switch Passes Self Test ...........................2-6

LED Behavior ...........................................2-8

3. Mount the Switch ......................................... 2-8

Wall Mounting ........................................... 2-8

Horizontal Surface Mounting .............................. 2-9

4. Connect the Switch to a Power Source ......................2-11

5. Connect the Network Cables ...............................2-12

Using the RJ-45 Connectors .............................. 2-12

Sample Network Topologies ..................................... 2-13

3 Troubleshooting

Basic Troubleshooting Tips ......................................3-1

Diagnosing with the LEDs ........................................3-3

LED patterns for General Switch Troubleshooting ...............3-3

Hardware Diagnostic Tests .......................................3-5

Testing the Switch by Resetting It .............................3-5

Testing Twisted-Pair Cabling ..................................3-5

Contents

HP J9794A Installation And Getting Started Guide

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