HP J4903A User Manual - Page 5

1

Contents

1

Introducing the Switch

Front of the Switch

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

Network Ports

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

LEDs

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

LED Mode Select Button and Indicator LEDs . . . . . . . . . . . . . . . . . . . . 1-7

Reset Button

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Clear Button

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Back of the Switch

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Console Port

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Power Connector

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Switch Features

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

2

Installing the Switch

Included Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installation Procedures

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Installation Precautions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

1. Prepare the Installation Site

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2. Installing or Removing mini-GBICs

. . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

3. Verify the Switch Passes Self Test

. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

LED Behavior:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

4. Mount the Switch

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Rack or Cabinet Mounting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Rack Mounting the Switch 2848 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Rack Mounting the Switch 2824 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Horizontal Surface Mounting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

5. Connect the Switch to a Power Source

. . . . . . . . . . . . . . . . . . . . . . 2-17

6. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Using the RJ-45 Connectors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Connecting Cables to mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Section	Page
Installation and Getting Started Guide	1
Copyright and Disclaimer page	4
Contents	5
1. Introducing the Switch	9
Front of the Switch	11
Network Ports	11
LEDs	13
LED Mode Select Button and Indicator LEDs	15
Reset Button	16
Clear Button	16
Back of the Switch	17
Console Port	17
Power Connector	17
Switch Features	18
2. Installing the Switch	19
Included Parts	19
Installation Procedures	21
Summary	21
Installation Precautions:	22
1. Prepare the Installation Site	23
2. Installing or Removing mini-GBICs	25
3. Verify the Switch Passes Self Test	27
LED Behavior:	28
4. Mount the Switch	29
Rack or Cabinet Mounting	29
Rack Mounting the Switch 2848	30
Rack Mounting the Switch 2824	32
Horizontal Surface Mounting	35
5. Connect the Switch to a Power Source	35
6. Connect the Network Cables	36
Using the RJ-45 Connectors	36
Connecting Cables to mini-GBICs	36
7. (Optional) Connect a Redundant Power Supply to the Switch	37
8. (Optional) Connect a Console to the Switch	40
Terminal Configuration	40
Direct Console Access	41
Sample Network Topologies	42
As a Desktop Switch	42
As a Segment Switch	43
Connecting to a Backbone Switch	45
Stacking the Switch	46
The Switch in a Redundant Topology	47
3. Configuring the Switch	49
Recommended Minimal Configuration	49
Using the Console Setup Screen	50
Where to Go From Here	52
Using the IP Address for Remote Switch Management	53
Starting a Telnet Session	53
Starting a Web Browser Session	53
4. Troubleshooting	55
Basic Troubleshooting Tips	55
Diagnosing with the LEDs	58
Proactive Networking	62
Hardware Diagnostic Tests	63
Testing the Switch by Resetting It	63
Checking the Switch LEDs	63
Checking Console Messages	63
Testing Twisted-Pair Cabling	64
Testing Switch-to-Device Network Communications	64
Testing End-to-End Network Communications	64
Restoring the Factory Default Configuration	65
Downloading New Switch Software	66
HP Customer Support Services	66
Before Calling Support	66
A. Switch Specifications	67
Physical	67
Electrical	67
Environmental	67
Acoustic	68
Connectors	68
Safety	68
Lasers	68
B. Switch Ports and Network Cables	69
Switch Ports	69
Twisted-Pair Cables	69
Mode Conditioning Patch Cord for Gigabit-LX	71
Installing the Patch Cord	72
Recommended Patch Cords	72
Twisted-Pair Cable/Connector Pin-Outs	73
Straight-Through Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connections	74
Cable Diagram	74
Pin Assignments	74
Crossover Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connection	75
Cable Diagram	75
Pin Assignments	75
Straight-Through Twisted-Pair Cable for 1000 Mbps Network Connections	76
Cable Diagram	76
Pin Assignments	76
C. Safety and EMC Regulatory Statements	77
Safety Information	77
Informations concernant la sécurité	78
Hinweise zur Sicherheit	79
Considerazioni sulla sicurezza	80
Consideraciones sobre seguridad	81
Safety Information (Japan)	82
Safety Information (China)	83
EMC Regulatory Statements	84
U.S.A.	84
Canada	84
Australia/New Zealand	84
Japan	84
Korea	85
Taiwan	85
European Community	86

HP J4903A User Manual - Page 5

Contents, Introducing the Switch

Page 5 highlights