HP 1920-16G, 1920-24G, 1920-48G, 1920-8G, 1920-8G-PoE+ User Manual

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HP 1920 Gigabit Ethernet Switch Series

Getting Started Guide

5998-5626

Part number: 5998-5626

Document version: 6W101-20140820

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Legal and notice information

No part of this documentation may be reproduced or transmitted in any form or by any means without prior written consent of Hewlett-Packard Development Company, L.P.

The information contained herein is subject to change without notice.

HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

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Preparing for installation ············································································································································· 1

Safety recommendations ·················································································································································· 1 Examining the installation site ········································································································································· 2

Temperature/humidity ············································································································································· 2 Cleanness ·································································································································································· 2 EMI ············································································································································································· 3

Installing the switch ······················································································································································ 4

Mounting the switch in a 19-inch rack by using mounting brackets ··········································································· 4 Mounting the switch on a workbench ····························································································································· 7 Mounting the switch on a wall ········································································································································ 7 Connecting cables ···························································································································································· 9

Connecting network cable ······································································································································ 9 Installing the SFP transceiver module and optical fibers ······················································································ 9 Connecting the console cable ······························································································································ 10 Connecting the AC power cord ··························································································································· 10 Connecting the DC power cord ··························································································································· 11

Verifying the installation ················································································································································ 12

Accessing the switch for the first time ······················································································································· 13

Setting up the configuration environment ···················································································································· 13 Connecting the console cable ······································································································································ 13

Console cable ························································································································································ 13

Connection procedure ·········································································································································· 14 Setting terminal parameters ·········································································································································· 14 Powering on the switch·················································································································································· 17

Verification before power-on ······························································································································· 17

Powering on the switch ········································································································································· 17

Support and other resources ····································································································································· 19

Contacting HP ································································································································································ 19

Subscription service ·············································································································································· 19 Related information ························································································································································ 19

Documents ······························································································································································ 19

Websites ································································································································································· 19 Conventions ···································································································································································· 20

Appendix A Chassis views and technical specifications ························································································ 22

Chassis views ································································································································································· 22

1920-8G ································································································································································ 22

1920-16G ······························································································································································ 22

1920-24G ······························································································································································ 23

1920-48G ······························································································································································ 23

1920-8G-PoE+ (65W) ·········································································································································· 24

1920-8G-PoE+ (180W) ······································································································································· 24

1920-24G-PoE+ (180W) ····································································································································· 25

1920-24G-PoE+ (370W) ····································································································································· 25 Physical specifications ··················································································································································· 26

Chassis dimensions and weights ························································································································· 26

Ports and interface card slots ······························································································································· 26 Environmental specifications ········································································································································· 27

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Power specifications ······················································································································································ 27

AC input voltage specifications ··························································································································· 27

RPS DC input voltage specifications and RPS compatibility ············································································· 27

Power consumption specifications for non-PoE switches ··················································································· 27

Power consumption specifications for PoE switches ·························································································· 27 Cooling system ······························································································································································· 28

Appendix B LEDs ························································································································································ 29

Power LED ······························································································································································ 29

Copper port LEDs ·················································································································································· 29

Fiber port LEDs ······················································································································································· 29

RPS LED ··································································································································································· 30

Appendix C Troubleshooting ···································································································································· 31

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Preparing for installation

The HP 1920 Gigabit Ethernet Switch Series includes models listed in Table 1.

Table 1 HP 1920 Gigabit Ethernet Switch Series models

Product code HP description Alias RMN

Non-PoE

JG920A HP 1920-8G Switch 1920-8G HNGZA-HA0008

JG923A HP 1920-16G Switch 1920-16G HNGZA-HA0011

JG924A HP 1920-24G Switch 1920-24G HNGZA-HA0012

JG927A HP 1920-48G Switch 1920-48G HNGZA-HA0015

PoE

JG921A HP 1920-8G-PoE+ (65W) Switch 1920-8G-PoE+ (65W) HNGZA-HA0009

JG922A HP 1920-8G-PoE+ (180W) Switch 1920-8G-PoE+ (180W) HNGZA-HA0010

JG925A HP 1920-24G-PoE+ (180W) Switch 1920-24G-PoE (180W) HNGZA-HA0013

JG926A HP 1920-24G-PoE+ (370W) Switch 1920-24G-PoE (370W) HNGZA-HA0014

IMPORTANT:

For regulatory identification purposes, the switches are assigned Regulatory Model Numbers (RMNs). The RMNs should not be confused with the marketing name HP 1920, or the product codes.

Safety recommendations

To avoid any equipment damage or bodily injury, read the following safety recommendations before installation. The recommendations do not cover every possible hazardous condition.

• To avoid damage to the electrolytic capacitor in the switch, do not store the switch without power for

more than one year.

• Before cleaning the switch, remove all power cords from the switch. Do not clean the switch with a

wet cloth or liquid.

• Do not place the switch near water or in a damp environment. Prevent water or moisture from

entering the switch chassis.

• Do not place the switch on an unstable case or desk. The switch might be severely damaged in case

of a fall.

• Ensure good ventilation of the equipment room and keep the air inlet and outlet vents of the switch

free of obstruction.

• Make sure the operating voltage is in the required range.

• To avoid electrical shocks, do not open the chassis while the switch is operating or when the switch

is just powered off.

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• The accessories shipped with the switch, including but not limited to power cables, are intended

only for the switch. Please do not use them for other products.

Examining the installation site

The switches must be used indoors. You can mount your switch in a rack or on a workbench, but make sure:

• A minimum clearance of 5 cm (1.97 in) is reserved at the air inlet and exhaust vents for ventilation.

• The rack or workbench has a good ventilation system.

• The rack or workbench is sturdy enough to support the switch and its accessories.

• The rack or workbench is reliably grounded.

To ensure correct operation and long service life of your switch, install it in an environment that meets the requirements described in the following subsections.

Temperature/humidity

Maintain temperature and humidity in the equipment room as described in "Environmental

specifications."

• Lasting high relative humidity can cause poor insulation, electricity creepage, mechanical property

change of materials, and metal corrosion.

• Lasting low relative humidity can cause washer contraction and ESD and bring problems including

loose captive screws and circuit failure.

• High temperature can accelerate the aging of insulation materials and significantly lower the

reliability and lifespan of the switch.

Cleanness

Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of metal components and contact points, especially when indoor relative humidity is low. In the worst case, electrostatic adsorption can cause communication failure.

Table 2 Dust concentration limit in the equipment room

Substance Concentration limit (

Dust

NOTE:

Dust diameter ≥ 5 μm

The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table 3.

articles/m³)

≤ 3 x 104 (no visible dust on the tabletop over three days)

Table 3 Harmful gas li

Gas Maximum concentration (m

H2S 0.006

mits in the equipment room

/m3)

0.2

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EMI

Gas Maximum concentration (mg/m3)

NH3 0.05

Cl2 0.01

All electromagnetic interference (EMI) sources, from outside or inside of the switch and application system, adversely affect the switch in the following ways:

• A conduction pattern of capacitance coupling.

• Inductance coupling.

• Electromagnetic wave radiation.

• Common impedance (including the grounding system) coupling.

To prevent EMI, use the following guidelines:

• If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to

filter interference from the power grid.

• Keep the switch far away from radio transmitting stations, radar stations, and high-frequency

devices.

• Use electromagnetic shielding when necessary. For example, use shielded interface cables.

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Installing the switch

ARNING!

Before installing or moving the switch, remove the power cord.

You can install an HP 1920 switch in a 19-inch rack, on a workbench, or on a wall.

Mounting the switch in a 19-inch rack by using mounting brackets

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Verify that the rack is securely grounded and is stable.

3. Select mounting brackets for the switch.

{ The HP 1920-8G switch uses Type-A mounting brackets, as shown in Figure 1.

{ The HP 1920-8G-PoE+ (65W) and 1920-8G-PoE+ (180W) switches use Type-B mounting

brackets, as shown in Figure 2.

{ The HP 1920-16G, 1920-24G, 1920-24G-PoE+ (180W), 1920-24G-PoE+ (370W) and

1920-48G switches use Type-C mounting brackets, as shown in Figure 3.

4. Attach the mounting brackets to both side

NOTE:

Mounting brackets are used only for securing the switch to the rack. A rack shelf on the rack is used to bear the switch weight.

Figure 1 Attaching Type-A mounting brackets to the switch

Figure 2 Attaching Type-B mounting brackets to the switch

s of the chassis with screws.

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Figure 3 Attaching Type-C mounting brackets to the switch

5. Place the switch on a rack shelf in the rack. Push the switch in until the oval holes in the brackets

align with the mounting holes in the rack posts.

6. Attach the mounting brackets to the rack posts with screws. Figure 4 Attaching Type-A mounting brackets to the rack post

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Figure 5 Attaching Type-B mounting brackets to the rack post

Figure 6 Attaching Type-C mounting brackets to the rack post

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Mounting the switch on a workbench

IMPORTANT:

• Reserve a clearance of 10 cm (3.9 in) around the chassis for heat dissipation.

• Do not place heavy objects on the switch.

To mount the switch on a workbench:

1. Verify that the workbench is sturdy and reliably grounded.

2. Place the switch bottom up, and clean the round holes in the chassis bottom with a dry cloth.

3. Attach the rubber feet to the four round holes in the chassis bottom.

4. Place the switch upside up on the workbench.

Figure 7 Attaching rubber feet (HP 1920-24G-PoE+ Switch)

Mounting the switch on a wall

Only the HP 1920-8G switch can be installed on a wall. The type of screws used to mount the switch on the wall depends on the wall type. This section uses a concrete wall as an example.

Wall-mounting anchor kits are user supplied. The screws must be a minimum of 3 mm (0.12 in) in diameter, and the screw head must be a minimum of 6 mm (0.24 in) in diameter.

Figure 8 Wall-mounting anchor kit

To install the switch on a concrete wall:

1. Drill two holes at the same height. Make sure the spacing in between is 160 mm (6.30 in), as

shown in Figure 9.

he hole depth and diameter depend on the wall anchors and screws you use. Make sure you can

T push the anchors to their full depth in the holes.

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Figure 9 Hole spacing

2. Insert one wall anchor into each hole until the anchors are flush with the wall surface.

3. Drive one screw into each wall anchor, and tighten the screws just enough to keep it secure in the

wall anchor.

Leave a minimum clearance of 1.5 mm (0.06 in) between the base of the screw head and the wall anchor so the switch can hang on the screws securely.

Figure 10 Driving a screw into a wall anchor

4. Align the two mounting holes in the switch chassis bottom with the two screws on the wall and

hang the switch.

Make sure the Ethernet ports are facing downwards and the chassis side panels are perpendicular to the ground.

Figure 11 Wall mounting

(1) Mounting hole in the switch chassis bottom

Page 13

Connecting cables

Connecting network cable

Use crossover cable or straight through cable to connect a PC or other network devices to the Ethernet port of the switch.

Figure 12 Connecting network cable

Installing the SFP transceiver module and optical fibers

CAUTION:

• Hold the SFP transceiver module by its two sides when you install or remove the module. Do not touch

the golden finger of the module.

• Remove the optical fiber, if any, from a transceiver module before installing it.

To install an SFP transceiver module and optical fibers:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Pivot the clasp of the module up. Holding the module, gently push the module into the slot until it

has firm contact with the slot (when the top and bottom spring tabs catch in the slot).

3. Remove protective sleeves from optical fibers, and the dust plug from the transceiver module.

4. Connect the LC connectors of the optical fibers to the transceiver module.

NOTE:

Keep the protective sleeves for future use.

Page 14

Figure 13 Installing the SFP transceiver module and optical fibers

Connecting the console cable

To connect a terminal (for example, a PC) to the switch:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Connect the DB-9 female connector of the console cable to the serial port of the PC.

3. Connect the RJ-45 connector to the console port of the switch.

Figure 14 Connecting the console cable

NOTE:

To disconnect the console cable, remove the RJ-45 connector of the cable and then the DB-9 female connector.

Connecting the AC power cord

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Connect one end of the grounding cable to the grounding screw on the rear panel, and connect

the other end to the ground.

3. Make sure the correct power source is used.

Page 15

4. Connect one end of the AC power cord to the AC power receptacle on the switch.

5. Connect the other end of the AC power cord to the AC power outlet.

6. Examine the power LED. If it is ON, the power connection is correct.

Figure 15 Connecting the AC power cord to the AC power receptacle

Connecting the DC power cord

IMPORTANT:

Make sure the DC power cord is shorter than 3 m (9.84 ft).

Only the HP 1920-24G-PoE+ (370W) supports DC RPS power.

If only the DC power cord is connected, the switch operates correctly when the DC input voltage is in the range of –47 VDC to –57 VDC. If both AC and DC power cords are connected, the switch chooses the power supply based on the DC input voltage, as shown in Table 4.

Table 4 Power supply selection criteria

DC in

ut voltage

–54 VDC to –57 VDC DC

< –54 VDC AC

Power supply

To connect the DC power cord:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Connect one end of the grounding cable to the grounding screw on the rear panel, and connect

the other end to the ground.

3. Insert the DC connector to the DC power receptacle.

If you cannot insert the connector into the receptacle, do not force it. Re-orient the connector and try to insert it again.

4. Use a flathead screwdriver to fasten screws on both sides of the connector.

5. Connect the other end of the DC power cord to the RPS. Make sure the RPS is supplying a minimum

of 876 W power.

6. View the RPS LED to verify that the DC power cord is installed correctly.

Page 16

Figure 16 Connecting the DC power cord to the DC power receptacle

Verifying the installation

After you complete the installation, verify the following items:

• There is enough space for heat dissipation around the switch.

• The rack or workbench is stable.

• The grounding cable is securely connected.

• The correct power source is used.

• The power cords are correctly connected.

• All the interface cables are cabled indoors. If any cable is routed outdoors, verify that the socket

strip with lightning protection and lightning arresters for network ports have been correctly connected.

Page 17

Accessing the switch for the first time

Setting up the configuration environment

The first time you access the switch you must use a console cable to connect a console terminal, for example, a PC, to the console port on the switch.

Figure 17 Connecting the console port to a terminal

Connecting the console cable

Console cable

A console cable is an 8-core shielded cable. It has a crimped RJ-45 connector at one end for connecting to the console port of the switch, and a DB-9 female connector at the other end for connecting to the serial port on the console terminal.

Figure 18 Console cable

A side

Pos.9

Pos.1

Main label

B side

Page 18

Connection procedure

CAUTION:

The serial ports on PCs do not support hot swapping. To connect a PC to an operating switch, first connec the PC end. To disconnect a PC from an operating switch, first disconnect the switch end.

To connect a terminal (for example, a PC) to the switch:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Connect the DB-9 female connector of the console cable to the serial port of the PC.

3. Connect the RJ-45 connector to the console port of the switch.

Identify the mark on the console port and make sure you are connecting to the correct port.

Setting terminal parameters

To configure and manage the switch, you must run a terminal emulator program on the console terminal.

The following terminal settings are required:

• Bits per second—38400.

• Data bits—8.

• Parity—None.

• Stop bits—1.

• Flow control—None.

• Emulation—VT100.

To set terminal parameters (for example, on a Windows XP HyperTerminal):

1. Select Start > All Programs > Accessories > Communications > HyperTerminal.

The Connection Description dialog box appears.

2. Enter the name of the new connection in the Name field and click OK. Figure 19 Connection description

Page 19

3. Select the serial port to be used from the Connect using list, and click OK. Figure 20 Setting the serial port used by the HyperTerminal connection

4. Set Bits per second to 38400, Data bits to 8, Parity to None, Stop bits to 1, and Flow control to

None, and click OK.

Figure 21 Setting the serial port parameters

5. Select File > Properties in the HyperTerminal window.

Page 20

Figure 22 HyperTerminal window

6. On the Settings tab, set the emulation to VT100 and click OK. Figure 23 Setting terminal emulation in Switch Properties dialog box

Page 21

Powering on the switch

Verification before power-on

Before powering on the switch, verify the following items:

• The power cord is correctly connected.

• The input power voltage meets the requirement of the switch.

• The console cable is correctly connected.

• The terminal (for example, a PC) has started, and its configuration parameters have been correctly

set.

Powering on the switch

Power on the switch (for example, an HP 1920-24G switch), and the following information is displayed:

Starting......

**************************************************************************** * * * HP 1920-24G Switch JG924A BootWare, Version 1.09 * * * **************************************************************************** Copyright (c) 2010-2014 Hewlett-Packard Development Company, L.P.

Compiled Date : Mar 20 2014 17:00:53 CPU Type : MIPS4kec CPU L1 Cache : 16KB CPU Clock Speed : 500MHz Memory Type : DDR3 SDRAM Memory Size : 128MB Memory Speed : 300MHz BootWare Size : 3MB Flash Size : 32MB

BootWare Validating... Press Ctrl+B to enter extended boot menu...

Starting to get the main application file--flash:/ 1920-24G.bin!........

..............

The main application file is self-decompressing.............................

............................................................................

Page 22

............................................................................

........................................................Done!

System application is starting...

User interface aux0 is available.

Press ENTER to get started.

Press Enter and the system displays the following prompt:

<Hp> This prompt indicates that the switch is ready to configure.

Page 23

Support and other resources

Contacting HP

For worldwide technical support information, see the HP support website:

http://www.hp.com/support

Before contacting HP, collect the following information:

• Product model names and numbers

• Technical support registration number (if applicable)

• Product serial numbers

• Error messages

• Operating system type and revision level

• Detailed questions

Subscription service

HP recommends that you register your product at the Subscriber's Choice for Business website:

http://www.hp.com/go/wwalerts

After registering, you will receive email notification of product enhancements, new driver versions, firmware updates, and other product resources.

Related information

Documents

To find related documents, browse to the Manuals page of the HP Business Support Center website:

http://www.hp.com/support/manuals

• For related documentation, navigate to the Networking section, and select a networking category.

• For a complete list of acronyms and their definitions, see HP FlexNetwork Technology Acronyms.

Websites

• HP.com http://www.hp.com

• HP Networking http://www.hp.com/go/networking

• HP manuals http://www.hp.com/support/manuals

• HP download drivers and software http://www.hp.com/support/downloads

• HP software depot http://www.software.hp.com

• HP Education http://www.hp.com/learn

HP 1920-16G, 1920-24G, 1920-48G, 1920-8G, 1920-8G-PoE+ User Manual

Contents

Preparing for installation

Safety recommendations

Examining the installation site

Temperature/humidity

Cleanness

Installing the switch

Mounting the switch in a 19-inch rack by using mounting brackets

Mounting the switch on a workbench

Mounting the switch on a wall

Connecting cables

Connecting network cable

Installing the SFP transceiver module and optical fibers

Connecting the console cable

Connecting the AC power cord

Connecting the DC power cord

Verifying the installation

Accessing the switch for the first time

Setting up the configuration environment

Connecting the console cable

Console cable

Connection procedure

Setting terminal parameters

Powering on the switch

Verification before power-on

Powering on the switch

Support and other resources

Contacting HP

Subscription service

Related information

Documents

Websites