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

HP 1920 Gigabit Ethernet Switch Series

Getting Started Guide

5998-5626

Part number: 5998-5626

Document version: 6W101-20140820

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Contents

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.

1

p

g

• 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

SO

2

H2S 0.006

mits in the equipment room

/m3)

0.2

2

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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