H3C S9820-8M User manual

H3C S9820-8M Switch
Installation Guide
New H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 5W100-20220614

Copyright © 2022, New H3C Technologies Co., Ltd. and its licensors
All rights reserved
No part of this manual may be reproduced or transmitted in any form or by any means without prior written
consent of New H3C Technologies Co., Ltd.
Trademarks
Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this
document are the property of their respective owners.
Notice
The information in this document is subject to change without notice. All contents in this document, including
statements, information, and recommendations, are believed to be accurate, but they are presented without
warranty of any kind, express or implied. H3C shall not be liable for technical or editorial errors or omissions
contained herein.
Environmental protection
This product has been designed to comply with the environmental protection requirements. The storage, use,
and disposal of this product must meet the applicable national laws and regulations.

Preface
H3C S9820-8M Switch Installation Guide describes the installation, power-on, maintenance, and
troubleshooting of the H3C S9820-8M Switch.
This preface includes the following topics about the documentation:
•
Audience.
•
Conventions.
•
Documentation feedback.
Audience
This documentation is intended for:
•
Network planners.
•
Field technical support and servicing engineers.
•
Network administrators working with the S9820-8M switch.
Conventions
The following information describes the conventions used in the documentation.
Command conventions
Convention
Description
Boldface Bold text represents commands and keywords that you enter literally as shown.
Italic Italic text represents arguments that you replace with actual values.
[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.
{ x | y | ... }
Braces enclose a set of required syntax choices separated by vertical bars, from which
you select one.
[ x | y | ... ]
Square brackets enclose a set of optional syntax choices separated by vertical bars,
from which you select one or none.
{ x | y | ... } *
Asterisk marked braces enclose a set of required syntax choices separated by vertical
bars, from which you select a minimum of one.
[ x | y | ... ] *
Asterisk marked square brackets enclose optional syntax choices separated by vertical
bars, from which you select one choice, multiple choices, or none.
&<1-n> The argument or keyword and argument combination before the ampersand (&) sign
can be entered 1 to n times.
# A line that starts with a pound (#) sign is comments.
GUI conventions
Convention
Description
Boldface Window names, button names, field names, and menu items are in Boldface. For
example, the New User window opens; click OK.
>
Multi-level menus are separated by angle brackets. For example, File > Create >

Convention
Description
Folder.
Symbols
Convention
Description
WARNING! An alert that calls attention to important information that if not understood or followed
can result in personal injury.
CAUTION:
An alert that calls attention to important information that if not understood or followed
can result in data loss, data corruption, or damage to hardware or software.
IMPORTANT:
An alert that calls attention to essential information.
NOTE:
An alert that contains additional or supplementary information.
TIP:
An alert that provides helpful information.
Network topology icons
Convention
Description
Represents a generic network device, such as a router, switch, or firewall.
Represents a routing-capable device, such as a router or Layer 3 switch.
Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that
supports Layer 2 forwarding and other Layer 2 features.
Represents an access controller, a unified wired-WLAN module, or the access
controller engine on a unified wired-WLAN switch.
Represents an access point.
Represents a wireless terminator unit.
Represents a wireless terminator.
Represents a mesh access point.
Represents omnidirectional signals.
Represents directional signals.
Represents a security product, such as a firewall, UTM, multiservice security
gateway, or load balancing device.
Represents a security module, such as a firewall, load balancing, NetStream, SSL
VPN, IPS, or ACG module.
T
T
T
T

Examples provided in this document
Examples in this document might use devices that differ from your device in hardware model,
configuration, or software version. It is normal that the port numbers, sample output, screenshots,
and other information in the examples differ from what you have on your device.
Documentation feedback
You can e-mail your comments about product documentation to [e-mail].
We appreciate your comments.

i
Contents
1 Preparing for installation··········································································1-1
Safety recommendations ································································································································1-1
Examining the installation site·························································································································1-1
Temperature/humidity·····························································································································1-1
Cleanliness··············································································································································1-2
EMI··························································································································································1-2
Laser safety·············································································································································1-3
Installation tools ··············································································································································1-3
Installation accessories···································································································································1-3
2 Installing the switch··················································································2-1
Installing the switch in a 19-inch rack··············································································································2-2
Rack-mounting procedure at a glance····································································································2-2
Rack requirements··································································································································2-2
Installation accessories···························································································································2-3
Attaching the mounting brackets to the chassis······················································································2-4
Attaching cage nuts and bottom support rails to the rack·······································································2-5
Mounting the switch in the rack···············································································································2-6
Attaching the cable management frame to the rack················································································2-6
Connecting the grounding cable to the chassis ······················································································2-7
Grounding the switch ······································································································································2-8
Installing/removing fan trays ···························································································································2-9
Installing a fan tray··································································································································2-9
Removing a fan tray······························································································································2-10
Installing and removing power supplies········································································································2-11
Installing a power supply·······················································································································2-11
Removing a power supply·····················································································································2-12
Connecting the power cord for a power supply·····························································································2-13
Installing and removing interface modules····································································································2-14
Installing an interface module ···············································································································2-14
Removing an interface module ·············································································································2-16
Verifying the installation································································································································2-16
3 Accessing the switch for the first time······················································3-1
Connecting the serial console cable ···············································································································3-1
Connecting a mini USB console cable············································································································3-2
Setting terminal parameters····························································································································3-4
Powering on the switch···································································································································3-4
4 Maintenance and troubleshooting····························································4-1
Power supply failure········································································································································4-1
Symptom·················································································································································4-1
Solution···················································································································································4-1
Fan tray failure················································································································································4-1
Symptom·················································································································································4-1
Solution···················································································································································4-1
Configuration terminal display issues··············································································································4-1
No output·················································································································································4-1
Garbled output ········································································································································4-2

1-1
1 Preparing for installation
This document is applicable to the S9820-8M switch model (BOM part number 0235A2SM, product
code LS-9820-8M).
Safety recommendations
To avoid any equipment damage or bodily injury caused by incorrect use, read the following safety
recommendations before installation. Note that the recommendations do not cover every possible
hazardous condition.
•
Before cleaning the switch, remove 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 good ventilation in 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. As a best
practice, do not open the chassis even if the switch is powered off.
•
To avoid ESD damage, always wear an ESD wrist strap when replacing power supplies, fan
trays, and interface modules.
Examining the installation site
The switch must be used indoors. Make sure the installation site meets the following requirements:
•
Adequate clearance is reserved at the air inlet and outlet vents for ventilation.
•
The rack has a good ventilation system.
•
Identify the hot aisle and cold aisle at the installation site, and make sure 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
neighboring devices from entering the top device.
•
The rack is sturdy enough to support the switch and its accessories.
•
The rack 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 the temperature and humidity in the equipment room in the acceptable ranges.
•
Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical
property change of materials, and metal corrosion.
•
Lasting low relative humidity can cause washer contraction and ESD and cause problems
including loose mounting screws and circuit failure.

1-2
•
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, see H3C S9820-8M Switch Hardware Information
and Specifications.
Cleanliness
Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of
metal components and contact points. In the worst case, electrostatic adsorption can cause
communication failure.
Table1-1 Dust concentration limits in the equipment room
Substance Particle diameter Concentration limit
Dust particles ≥ 0.5 µm ≤ 3.5 × 106particles/m3
Dust particles ≥ 5 µm ≤ 3 × 104particles/m3
Dust (suspension) ≤75 µm ≤0.2 mg/m3
Dust (sedimentation) 75 µm to 150 µm ≤1.5 mg/(m2h)
Corrosive gases can accelerate corrosion and aging of components. Make sure the corrosive gases
in the equipment room do not exceed the concentration limits as shown in Table1-2.
Table1-2 Corrosive gas concentration limits in the equipment room
Gas Average concentration (mg/m3) Maximum concentration (mg/m3)
SO20.3 1.0
H2S 0.1 0.5
Cl20.1 0.3
HCI 0.1 0.5
HF 0.01 0.03
NH31.0 3.0
O30.05 0.1
NOX0.5 1.0
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.

1-3
•
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.
•
To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning
strikes, route interface cables only indoors.
Laser safety
WARNING
!
Disconnected optical fibers or transceiver modules might emit invisible laser light. Do not stare into
beams or view directly with optical instruments when the switch is operating.
The switch is a Class 1M laser device.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself:
•
Phillips screwdriver.
•
ESD wrist strap.
•
Marker.
Installation accessories
Before installation, make sure you have all the required installation accessories. If an accessory is
damaged or lost, use its BOM code to purchase a new one. You can find the BOM codes for the
accessories in Table1-3.
Table1-3 Installation accessories
BOM code Description Quantity
0223A1B0
Mounting brackets
1 kit (provided)
0231A2VL
Bottom support rails
1 kit. You must purchase bottom support
rails for rack-mounting the switch.
0231ACWW Cable management frame 1 or 2 (optional)
N/A M6 screw and cage nut As required (user supplied)
0404A162 Grounding cable 1 (provided)

1-4
BOM code Description Quantity
26010553 Grounding screw
2 (provided)
2113A2TU
Interface module filler panel
8 (provided)
2114A0CK
Power supply filler panel
2 (provided)
N/A Releasable cable tie As required (user supplied)
04042967
Console cable
1 (provided)
14990101
SFP port dust plug
1 (provided)

2-1
2 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
H3C for permission. Otherwise, H3C shall not be liable for any consequence
caused thereby.
CAUTION:
When installing the switch, always wear an ESD wrist strap and
make sure the wrist strap makes
good skin contact and is reliably grounded.
Figure2-1 Installation flow
Start
Ground the switch
Install fan trays
Install power modules
Connect power cords
Verify the installation
Turn on the circuit breakers Troubleshoot the
switch
Operating correctly?
End
No
Yes
Turn off the circuit
breakers
Install the switch
Install interface modules?
Install interface modules
Operating correctly? Troubleshoot the
switch
No
No
Yes
Yes

2-2
Installing the switch in a 19-inch rack
Rack-mounting procedure at a glance
Figure2-2 Rack-mounting procedure
NOTE:
If a rack shelf is available, you can put the switch on the rack shelf and slide the switch to a position
so that the mounting brackets make close contact with the front
rack posts. Then use screws to
secure the mounting brackets to the rack.
Rack requirements
To mount the switch in a 19-inch rack, the rack must meet the requirements in Table2-2.
Figure2-3 S9820-8M chassis dimensions
(1) Fan tray handle
(2) Interface module ejector lever
Table2-2 Rack requirements
Switch model Chassis dimensions Distance between the front and rear
rack posts Rack requirements
S9820-8M
•Height—130.5 mm (5.14
in)/3 RU
•Width—440 mm (17.32 in)
•Depth—837 mm (32.95 in)
760 mm (29.92 in) for the
chassis
27 mm (1.06 in) for the
interface module ejector
levers
50 mm (1.97 in) for the
fan tray handles
630 to 900 mm
(24.80 to 35.43 in)
•A minimum of 1200
mm (47.24 in) in depth
(recommended)
•A minimum of 150 mm
(5.91 in) between the
front rack post and the
front door.
•A minimum of 840 mm
(33.07 in) between the
front rack post and the
rear door.
IMPORTANT:
To reserve enough cabling space and close the rack
door easily, make sure the rack meets the
depth requirements.
Attach the mounting
brackets to both
sides of the switch
Attach the bottom
support rails to the
rack
Mount the switch in
the rack Connect the grounding cable
760 mm
(29.92 in)
130.5 mm (5.14 in)
1
2
27 mm (1.06 in)
50 mm (1.97 in)

2-3
Installation accessories
Table2-3 Installation accessories for rack-mounting the switch
Item Quantity and requirements
Mounting bracket (provided) 1 kit. See Figure2-4.
Cable management frame (optional) You can purchase one or two cable management frames for the
switch as required. See Figure2-5.
Bottom support rails (not provided) 1 kit. You must purchase bottom support rails for rack-mounting the
switch. See Figure2-6.
Figure2-4 Mounting brackets
Figure2-5 Cable management frame

2-4
Figure2-6 Bottom support rails
(1) Installation hole
(2) Guide rail
(3) Front end mark (FRONT)
Attaching the mounting brackets to the chassis
As shown in Figure2-7, the switch provides one installation position for mounting brackets.
Figure2-7 Installation position for mounting brackets
(1) Installation position for mounting brackets
To attach the mounting brackets to the chassis:
1. Place the wide side of a mounting bracket against its installation position on the chassis. Align
the mounting holes in the mounting bracket with the screw holes in the chassis.
2. Use the provided M4 screws to attach the mounting bracket to the chassis (recommended
torque: 12 kgf-cm).
2
1
3
1

2-5
3. Attach the other mounting bracket to the other side of the chassis in the same way.
Figure2-8 Attaching the mounting brackets to the switch
Attaching cage nuts and bottom support rails to the rack
1. Identify and mark the cage nut installation holes on the rack for securing mounting brackets and
bottom support rails.
2. Install cage nuts (user-supplied) in the marked mounting holes in the rack posts.
3. Align the screw holes in one bottom support rail with the installation holes in the rack posts at
one side. Use the user-supplied M6 screws to attach the bottom support rail to the posts
(recommended torque: 30 kgf-cm), as shown in Figure2-9.
4. Perform the same procedure to attach the other bottom support rail to the rack posts at the
other side.
Make sure the two bottom support rails are at the same height so that the bottom support rails
can slide into the chassis rails steadily.
Figure2-9 Installing bottom support rails
1
2
Attach bottom support rails
to the rack
Attach cage nuts
to the rack

2-6
Mounting the switch in the rack
This task requires two people.
To mount the switch in the rack:
1. Verify that the mounting brackets have been securely attached to the switch chassis.
2. Verify that the bottom support rails and cage nuts have been correctly attached to the rack
posts.
3. One person performs the following operations:
a. Supporting the bottom of the switch, aligns the chassis with the bottom support rails.
b. Pushes the switch slowly into the rack so that the mounting brackets are flush against the
rack posts.
4. Another person uses screws of appropriate size to attach the mounting brackets to the rack.
You need to prepare these screws yourself. Make sure the screws are anti-corrosive.
Figure2-10 Mounting the switch in the rack
Attaching the cable management frame to the rack
You can purchase one cable management frame for the switch and install it on the rack posts
immediately above or below the switch as required. For more organized cabling, you can purchase
two cable management frames so that the switch has a cable management frame installed both
above and below it.
To attach a cable management frame to the switch:
1. Verify that the cage nuts for securing the cable management frame have been correctly
attached to the rack posts. For more information, see "Attaching cage nuts and bottom support
rails to the rack."
2. Determine to install the cable management frame above or below the switch based on the
cabling requirements.
3. Use screws of appropriate size to attach the cable management frame securely to the front rack
posts.

2-7
Figure2-11 Attaching a cable management frame to the front rack posts
Connecting the grounding cable to the chassis
As shown in Figure2-12, the switch provides one grounding point at the rear panel.
Figure2-12 Grounding point
(1) Grounding point
To connect the grounding cable to the chassis:
1. Unpack the grounding cable and grounding screws.
2. Use the two grounding screws to attach the two-hole grounding lug of the grounding cable to
the grounding point (recommended torque: 20 kgf-cm), and then fasten the screws.
1

2-8
Figure2-13 Attaching the grounding cable to the grounding point on the switch
Grounding the switch
WARNING
!
•
Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.
•
Connect the grounding cable to the grounding system in the equipment room. Do not connect it
to a fire main or lightning rod.
CAUTION:
To
guarantee the grounding effect, connect the switch to a grounding strip in the equipment room
by
using the grounding cable provided with the switch.
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 to minimize the potential for system damage, maximize the safety at the
site, and minimize EMI susceptibility of the system.
You can ground a switch by using a grounding strip at the installation site.
NOTE:
The grounding terminals in this section are for illustration only.
To ground the switch by using a grounding strip:
1. Attach the two-hole grounding lug of the grounding cable to the grounding point on the chassis.
For more information, see "Connecting the grounding cable to the chassis."
2. Remove the hex nut of a grounding post on the grounding strip.
3. Attach the ring terminal at the other end of the grounding cable to the grounding post on the
grounding strip, and secure the ring terminal to the grounding post with the hex nut.

2-9
Figure2-14 Connecting the grounding cable to a grounding strip
(1) Hex nut
(2) Ring terminal
(3) Grounding post
(4) Grounding strip
Installing/removing fan trays
CAUTION:
The
switch has five fan tray slots. For adequate heat dissipation, follow these guidelines:
•
The switch is provided with the fan tray slots empty. Before powering on the switch, make sure
it
has five fan trays of the same model installed.
•
Make sure each slot has a module or filler panel installed when the switch is operating.
•
If multiple fan trays fail on the operating switch, do not remove the fan trays at the same time.
Replace the fan trays one after another and finish replacing a fan tray within 3 minutes.
The switch uses a front-rear air aisle and supports the FAN-80B-1-B fan tray. The FAN-80B-1-B fan
tray provides port side-intake and power supply side-exhaust airflow and its handle is red. For more
information about the FAN-80B-1-B fan tray, see H3C S9820-8M Switch Hardware Information and
Specifications.
Before installing a fan tray, make sure the airflow direction provided by the fan tray meets the
ventilation requirements.
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.
1234

2-10
IMPORTANT:
Before
powering on the switch, make sure the fan tray airflow direction and the preferred airflow
direction
of the switch are the same. If they are not the same, the system generates traps and logs.
Y
ou can use the fan prefer-direction command to configure the
preferred airflow direction
for
the switch. By default, the preferred airflow direction of the switch is from the port side to the
pow
er supply side. For more information about the fan prefer-direction command, see
device management in H3C S9820-8M Switch Fundamentals Command Reference.
To install a fan tray:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Unpack the fan tray and verify that the fan tray model is correct.
3. Orient the fan tray with the adapter facing upwards. Grasp the handle of the fan tray with one
hand and support the fan tray bottom with the other. Slide the fan tray along the guide rails into
the slot until the fan tray is fully seated in the slot and has a firm contact with the backplane. See
Figure2-15.
The fan tray and the fan tray slot each have an alignment hole. Orient the fan tray as indicated
by alignment holes. Ensure that the alignment hole in the fan tray is aligned with that in the
switch after the fan tray installation.
Figure2-15 Installing a FAN-80B-1-B fan tray
Removing a fan tray
WARNING
!
•
Ensure electricity safety and never touch the rotating fans when you hot-swap a fan tray.
•
To prevent a fan from causing loud noise, do not touch the fan blades and rotation axis, even if
the fan is not rotating.
To remove a fan tray:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Press the red part of the handle with one hand and pull the fan tray part way out of the slot.
Supporting the fan tray bottom with the other, pull the fan tray completely out of the slot along
the guide rails.
3. Put the removed fan tray in an antistatic bag.
12
Alignment hole of the fan tray