HP 5920 User manual

HP 5920 & 5900 Switch Series
Installation Guide
Part number: 5998-2852
Document version:
A
W100-20111117

Legal and notice information
© Copyright 2011 Hewlett-Packard Development Company, L.P.
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.
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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.

i
Contents
Product overview·························································································································································· 1
HP 5920AF-24XG panel views·······································································································································1
HP 5900AF-48XG-4QSFP+ panel views························································································································2
Preparing for installation ············································································································································· 4
Safety recommendations ··················································································································································4
Examining the installation site ·········································································································································4
Temperature/humidity ·············································································································································4
Cleanness··································································································································································5
EMI·············································································································································································5
Laser safety································································································································································6
Installation tools·································································································································································6
Installing the switch······················································································································································ 7
Installing the switch in a 19-inch rack·····························································································································7
Installation prerequisites ··········································································································································7
Mounting bracket and rack mounting rail kits ······································································································8
Rack-mounting procedures at a glance··················································································································8
Attaching the mounting brackets, chassis rails, and grounding cable to the chassis·······································9
Attaching the slide rails to the rack ····················································································································· 11
Mounting the switch in the rack··························································································································· 12
Grounding the switch ···················································································································································· 13
Grounding the switch with a grounding strip····································································································· 14
Grounding the switch by using the AC power cord·························································································· 15
Installing/removing a fan tray······································································································································ 16
Installing a fan tray ··············································································································································· 16
Removing a fan tray·············································································································································· 17
Installing/removing a power supply ···························································································································· 17
Installing a power supply ····································································································································· 18
Removing a power supply···································································································································· 19
Connecting the power cord ·········································································································································· 20
Connecting the 650W AC power supply ·········································································································· 20
Connecting the 650W DC power supply··········································································································· 21
Verifying the installation················································································································································ 21
Accessing the switch for the first time·······················································································································23
Setting up the configuration environment···················································································································· 23
Connecting the console cable ······································································································································ 23
Console cable························································································································································ 23
Connection procedure ·········································································································································· 23
Setting terminal parameters ·········································································································································· 24
Powering on the switch·················································································································································· 27
Verification before power-on ······························································································································· 27
Powering on the switch········································································································································· 27
Changing the startup mode·································································································································· 29
Setting up an IRF fabric ·············································································································································32
IRF fabric setup flowchart·············································································································································· 32
Planning IRF fabric setup··············································································································································· 33
Planning IRF fabric size and the installation site································································································ 33
Identifying the master switch and planning IRF member IDs ············································································ 33

ii
Planning IRF topology and connections ·············································································································· 34
Identifying physical IRF ports on the member switches ····················································································· 35
Planning the cabling scheme ······························································································································· 35
Configuring basic IRF settings······································································································································· 37
Connecting the physical IRF ports ································································································································ 37
Accessing the IRF fabric to verify the configuration ··································································································· 37
Maintenance and troubleshooting····························································································································39
Password loss ································································································································································· 39
Console login password loss ······························································································································· 39
Boot ROM password loss ····································································································································· 39
Power supply failure ······················································································································································ 39
Fan failure······································································································································································· 40
Configuration terminal problems·································································································································· 40
Appendix A Technical specifications························································································································41
Appendix B FRUs and compatibility matrixes··········································································································43
Hot swappable power supplies···································································································································· 43
Hot swappable fan trays··············································································································································· 43
Appendix C Ports and LEDs ······································································································································45
Ports ················································································································································································· 45
Console port ·························································································································································· 45
Management Ethernet port··································································································································· 45
USB port ································································································································································· 45
SFP+ port································································································································································ 46
QSFP+ port ···························································································································································· 47
LEDs ················································································································································································· 49
System status LED··················································································································································· 49
SFP+ port LED ························································································································································ 49
QSFP+ port LED····················································································································································· 49
Management Ethernet port LEDs·························································································································· 50
Appendix D Cooling system······································································································································51
HP 5920AF-24XG cooling system ······························································································································· 51
HP 5900AF-48XG-4QSFP+ cooling system················································································································ 52
Index ···········································································································································································54

1
Product overview
Table 1 HP 5920 and 5900 Switch Series models and power supplies
Product code HP description Alias
JG296A HP 5920AF-24XG Switch HP 5920AF-24XG
JC772A HP 5900AF-48XG-4QSFP+ Switch HP 5900AF-48XG-4QSFP+
JC680A A58x0AF 650W AC Power Supply 650W AC power supply
JC681A A58x0AF 650W DC Power Supply 650W DC power supply
IMPORTANT:
•For regulatory identification purposes, the HP 5920AF-24XG switch is assigned a regulatory model
number (RMN) BJNGA-AC0007. This regulatory number should not be confused with the marketing
name HP 5920AF, or product code JG296A.
•For regulatory identification purposes, the HP 5900AF-48XG-4QSFP+ switch is assi
g
ned a re
g
ulatory
model number (RMN) BJNGA-AD0016. This regulatory number should not be confused with the
marketing name HP 5900AF, or product code JC772A.
HP 5920AF-24XG panel views
Figure 1 HP 5920AF-24XG front panel
(1) SFP+ port (2) SFP+ port LED
(3) Management Ethernet port (4) Console port
(5) System status LED (SYS) (6)
A
CT LED for the mana
g
ement Ethernet port
(7) LINK LED for the mana
g
ement Ethernet port

2
Figure 2 HP 5920AF-24XG rear panel
(1) Power supply slot 1 (2) Power supply slot 2
(3) Fan tray slot 1 (4) Fan tray slot 2
NOTE:
•The HP 5920AF-24XG switch comes with the power supply slots empty and the filler modules for the slots
as accessories. You can install one or two power supplies for the switch as needed. In this figure, two
650W AC power supplies are installed.
•The HP 5920AF-24XG switch also comes with the fan tray slots empty. You must install two fan trays for
the 5920AF-24XG for adequate heat dissipation, and their models must be the same. In this figure, two
LSVM124SFAN fan trays are installed.
Figure 3 HP 5920AF-24XG left side panel
(1) Primary grounding point (2) Auxiliary grounding point 1
HP 5900AF-48XG-4QSFP+ panel views
Figure 4 HP 5900AF-48XG-4QSFP+ front panel
(1) SFP+ port (2) SFP+ port LED
(3) QSFP+ port (4) QSFP+ port LED
(5) System status LED (SYS)

3
Figure 5 HP 5900AF-48XG-4QSFP+ rear panel
(1) Groundin
g
screw (auxiliary
g
roundin
g
point 2) (2) Mana
g
ement Ethernet port
(3) Console port (4) Fan tray slot 1
(5) Fan tray slot 2 (6) Power supply slot 1
(7) Power supply slot 2 (8) LINK LED for the mana
g
ement Ethernet port
(9) ACT LED for the management Ethernet port (10) USB port
NOTE:
•The HP 5900AF-48XG-4QSFP+ switch comes with the power supply slots empty and the filler modules
for the slots as accessories. You can install one or two power supplies for the switch as needed. In this
figure, two 650W AC power supplies are installed.
•The HP 5900AF-48XG-4QSFP+ switch also comes with the fan tray slots empty. You must install two fan
trays for the 5900AF-48XG-4QSFP+ for adequate heat dissipation, and their models must be the same.
In this figure, two LSWM1FANSC fan trays are installed.
Figure 6 HP 5900AF-48XG-4QSFP+ left side panel
(1) Primary
g
roundin
g
point (2) Auxiliary
g
roundin
g
point 1

4
Preparing for installation
Safety recommendations
To avoid any equipment damage or bodily injury caused by improper use, read the following safety
recommendations before installation. Note that the recommendations do not cover every possible
hazardous condition.
•Before cleaning the switch, unplug all power cords from the switch. Do not clean the switch with 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 proper ventilation of the equipment room and keep the air inlet and outlet vents of the switch
free of obstruction.
•Connect the yellow-green protection grounding cable before power-on.
•Make sure that 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.
•When replacing FRUs, including power supplies and fan trays, wear an ESD-preventive wrist strap
to avoid damaging the units.
Examining the installation site
The HP 5920AF-24XG and 5900AF-48XG-4QSFP+ switches must be used indoors.
Mount your switch in a rack and make sure:
•Adequate clearance is reserved at the air inlet and exhaust vents for ventilation.
•The rack has a good ventilation system.
•Identify the hot aisle and cold aisle at the installation site, and make sure that ambient air flows into
the switch from the cold aisle and exhausts to the hot aisle.
•Identify the airflow designs of neighboring devices, and prevent hot air flowing out of the bottom
device from entering the top device.
•The rack is sturdy enough to support the switch and its accessories.
•The rack is well earthed.
To ensure normal 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 appropriate temperature and humidity in the equipment room.

5
•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.
For the temperature and humidity requirements of different switch models, see “Appendix A Technical
specifications.”
Cleanness
Dust buildup on the chassis may 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
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 a conduction pattern of capacitance coupling, inductance coupling,
electromagnetic wave radiation, or common impedance (including the grounding system) coupling. To
prevent EMI, take the following actions:
•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, for example, shielded interface cables, when necessary.
•Route interface cables only indoors to prevent signal ports from getting damaged by overvoltage or
overcurrent caused by lightning strikes.

6
Laser safety
The HP 5920 and 5900 series switches are Class 1 laser devices.
W
ARNING!
Do not stare into any fiber port when the switch has power. The laser light emitted from the optical fiber
may hurt your eyes.
Installation tools
•Phillips screwdriver
•ESD-preventive wrist strap
All these installation tools are user supplied.

7
Installing the switch
CAUTION:
Keep the tamper-proof seal on a mounting screw on the chassis cover intact, and if you want to open the
chassis, contact HP for permission. Otherwise, HP shall not be liable for any consequence caused thereby.
Figure 7 Hardware installation flow
Installing the switch in a 19-inch rack
Installation prerequisites
The rack depth for the HP 5920AF-24XG and 5900AF-48XG-4QSFP+ Switches must be 1000 mm
(39.37 in).

8
Mounting bracket and rack mounting rail kits
The HP 5920AF-24XG and 5900AF-48XG-4QSFP+ switches come with a pair of mounting brackets
(see Figure 8) and a pair of chassis rails and a pair of slide rails (see Figure 9).
Figure 8 1U mounting bracket kit
Figure 9 Rack mounting rail kit
(1) Chassis rail (2) Slide rail
Rack-mounting procedures at a glance
Figure 10 Rack-mounting procedure
NOTE:
If a rack shelf is available, you can put the switch on the rack shelf, slide the switch to an appropriate
location, and attach the switch to the rack with the mounting brackets.

9
Attaching the mounting brackets, chassis rails, and grounding
cable to the chassis
The HP 5920AF-24XG and 5900AF-48XG-4QSFP+ switches have one front mounting position (near the
network ports) and one rear mounting position (near the power supplies).
The HP 5920AF-24XG has one primary grounding point (with a grounding sign) and one auxiliary
grounding point, and the HP 5900AF-48XG-4QSFP+ switch has one primary grounding point (with a
grounding sign) and two auxiliary grounding points. Use the primary grounding point whenever
possible. If the primary grounding point fails or is not suitable for the installation site, use one of the
auxiliary grounding points.
Figure 11 Identifying the mounting and grounding positions of the HP 5920AF-24XG
(1) Rear mounting position (2) Primary grounding point
(3) Auxiliary
g
roundin
g
point 1 (4) Front mountin
g
position
Figure 12 Identifying the mounting and grounding positions of the HP 5900AF-48XG-4QSFP+
(1)
A
uxiliary
g
roundin
g
point 2 (2) Rear mountin
g
position
(3) Primary grounding point (4) Auxiliary grounding point 1
(5) Front mountin
g
position

10
Attaching the mounting brackets and chassis rails to the chassis
To attach the mounting brackets and chassis rails to the switch chassis:
1. Align the mounting brackets with the screw holes in the rear mounting position (see Figure 13) or
front mounting position (see Figure 14).
2. Use M4 screws (supplied with the switch) to attach the mounting brackets to the chassis.
3. Align the chassis rails with the rail mounting holes in the chassis:
{If the mounting brackets are in the rear mounting position, align the chassis rails with the screw
holes at the front of the side panels (see Figure 13).
{If the mounting brackets are in the front mounting position, align the chassis rails with the screw
holes at the rear of the side panels (see Figure 14).
4. Use M4 screws (supplied with the switch) to attach the chassis rails to the chassis.
NOTE:
Secure the mounting brackets and chassis rails to both sides of the chassis in the same way.
Connecting the grounding cable to the chassis
CAUTION:
The primary grounding point and auxiliary grounding point 1 are located on the left side panel. If you use
one of these grounding points, you must connect the grounding cable to the grounding point before you
mount the switch in the rack.
NOTE:
•HP recommends that you use the primary grounding point or auxiliary grounding point 1 because the
grounding cable and grounding screw that come with the switch are suitable only for these two
grounding points.
•To use auxiliary grounding point 2 on the HP 5900AF-48XG-4QSFP+ switch, you must prepare a
grounding cable yourself.
To connect the grounding cable to a chassis grounding point, for example, the primary grounding point:
1. Choose a grounding point.
2. Unpack the grounding cable and grounding screws.
You can use the cable and screws shipped with the switch only for connecting to the primary
grounding point or auxiliary grounding point 1.
3. Align the two-hole grounding lug at one end of the cable with the grounding holes of the
grounding point, insert the grounding screws into the holes, and tighten the screws with a
screwdriver to attach the grounding lug to the chassis, as shown in Figure 13.

11
Figure 13 Attaching the rear mounting brackets/chassis rails/grounding cable to the chassis
Figure 14 Attaching the front mounting brackets/chassis rails to the chassis
Attaching the slide rails to the rack
To attach the slide rails to the rack:
1. Identify the rack attachment position for the slide rails.
2. Install cage nuts (user-supplied) in the mounting holes in the rack posts.
3. Align the screw holes in one slide rail with the cage nuts in the rack post on one side, and use
screws (user supplied) to attach the slide rail to the rack, as shown in Figure 15.
4. Repeat the preceding step to attach the other slide rail to the rack post on the other side.
Keep the two slide rails at the same height so the slide rails can attach into the chassis rails.

12
Figure 15 Installing the slide rails
Mounting the switch in the rack
This task requires two people. To mount the switch in the rack:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Check that the mounting brackets and chassis rails have been securely attached to the switch
chassis.
3. Check that the slide rails have been correctly attached to the rear rack posts.
4. Install cage nuts (user-supplied) to the front rack posts and make sure they are at the same level as
the slide rails.
5. Supporting the bottom of the switch, align the chassis rails with the slide rails on the rack posts, as
shown in Figure 16. Work with another person to slide the chassis rails along the slide rails until
the mounting brackets are flush with the rack posts.
6. Use screws (user-supplied) to attach the mounting brackets to the rack, as shown in Figure 17.
To secure the switch in the rack, make sure that the front ends of the slide rails reach out of the
chassis rails.

13
Figure 16 Mounting the switch in the rack (I)
Figure 17 Mounting the switch in the rack (II)
Grounding the switch
W
ARNING!
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.

14
The power input end of the switch has a noise filter, whose central ground is directly connected to the
chassis to form the chassis ground (commonly known as PGND). You must securely connect this chassis
ground to the earth so the faradism and leakage electricity can be safely released to the earth to
minimize EMI susceptibility of the switch.
You can ground a switch by using a grounding strip at the installation site or the AC power cord
connected to the switch.
NOTE:
The power and grounding terminals in this section are for illustration only.
Grounding the switch with a grounding strip
W
ARNING!
Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a fire
main or lightning rod.
If a grounding strip is available at the installation site, connect the grounding cable to the grounding
strip.
To connect the grounding cable:
1. Attach the two-hole grounding lug at one end of the grounding cable to a grounding point on the
switch chassis (see “Connecting the grounding cable to the chassis”).
2. Remove the hex nut of a grounding post on the grounding strip.
3. Attach the OT terminal at the other end of the grounding cable to the grounding strip through the
grounding post, and fasten the OT terminal with the removed hex nut.
Figure 18 Connecting the grounding cable to a grounding strip
(1) Hex nut (2) OT terminal
(3) Groundin
g
post (4) Groundin
g
strip

15
NOTE:
•HP recommends that you use the primary grounding point or auxiliary grounding point 1, because the
grounding cable and grounding screw provided with the switch are applicable only to these two
grounding points.
•To use auxiliary grounding point 2 on the HP 5900AF-48XG-4QSFP+ switch, you must prepare a
grounding cable yourself. The connection method is the same as connectin
g
to the other two
g
roundin
g
points.
Grounding the switch by using the AC power cord
If the installation site has no grounding strips, you can ground an AC-powered switch through the
protective earth (PE) wire of the power cord, but must make sure:
•The power cord has a PE terminal.
•The ground contact in the power outlet is securely connected to the ground in the power distribution
room or on the AC transformer side.
•The power cord is securely connected to the power outlet.
NOTE:
If the
g
round contact in the power outlet is not connected to the
g
round, report the problem and reconstruc
t
the grounding system.
Figure 19 Grounding through the PE wire of the AC power cord
(1) Three-wire AC power cable (2) Chassis rear panel
NOTE:
To guarantee the grounding effect, use the grounding cable provided with the switch to connect to the
grounding strip in the equipment room as long as possible.
12

16
Installing/removing a fan tray
CAUTION:
The HP 5920AF-24XG and 5900AF-48XG-4QSFP+ switches require two same direction air flow fan
trays to function properly.
•Do not operate the system with only one fan tray for more than 24 hours.
•Do not operate the system without any fan tray for more than 2 minutes.
•Do not operate the system outside of the temperature range 0°C to 45°C (32°F to 113°F) degrees.
Failure to comply with these operating requirements may void the warranty.
Installing a fan tray
CAUTION:
To prevent damage to the fan tray or the connectors on the backplane, insert the fan tray gently. If you
encounter a hard resistance while inserting the fan tray, pull out the fan tray and insert it again.
To install a fan tray:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Unpack the fan tray and check that the fan tray model is correct.
3. Grasp the handle of the fan tray with one hand and support the fan tray bottom with the other, and
slide the fan tray along the guide rails into the slot until the fan tray seats in the slot and has a firm
contact with the backplane (see callout 1 in Figure 20 or Figure 21).
4. Fasten the captive screw on the fan tray with a Philips screwdriver until the fan tray is securely
attached in the chassis (see callout 2 in Figure 20 or Figure 21).
If the captive screw cannot be tightly fastened, check the installation of the fan tray.
Figure 20 Installing an LSWM1FANSC or LSWM1FANSCB fan tray
1
2