HP 1920 Gigabit Ethernet Switch Series User manual

HP 1920 Gigabit Ethernet Switch Series
Getting Started Guide
Part number: 5998-5626
Document version: 6W101-20140820
5998-5626

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© Copyright 2014 Hewlett-Packard Development Company, L.P.
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HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
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additional warranty. HP shall not be liable for technical or editorial errors or omissions contained
herein.

i
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

1
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.

2
•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 (
p
articles/m³)
Dust ≤3 x 104 (no visible dust on the tabletop over three days)
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.
Table 3 Harmful gas limits in the equipment room
Gas Maximum concentration (m
g
/m3)
SO20.2
H2S 0.006

3
Gas Maximum concentration (m
g
/m3)
NH30.05
Cl20.01
EMI
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.

4
Installing the switch
W
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 sides of the chassis with screws.
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

5
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

6
Figure 5 Attaching Type-B mounting brackets to the rack post
Figure 6 Attaching Type-C mounting brackets to the rack post