H3C WX3820X User manual

H3C WX3820X Access Controller
Installation Guide
New H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 5W102-20230704

Copyright © 2023 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
This installation guide describes the installation procedures for the H3C WX3820X access controller,
including preparing for installing the controller, installing and accessing the controller,
troubleshooting the controller, and maintaining the controller.
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 WX3820X access controller.
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 optionalsyntax choices separated byvertical
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 omnidirectional signals.
Represents directional signals.
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].
Your comments or suggestions would be highly appreciated.

i
Contents
1 Preparing for installation··········································································1-1
Safety recommendations ································································································································1-1
Safety symbols········································································································································1-1
General safety recommendations···········································································································1-1
Electrical safety·······································································································································1-1
Laser safety·············································································································································1-2
Examining the installation site·························································································································1-2
Temperature and humidity······················································································································1-2
Cleanliness··············································································································································1-2
Cooling····················································································································································1-3
ESD prevention·······································································································································1-3
EMI··························································································································································1-4
Lightning protection·································································································································1-5
Installation accessories···································································································································1-5
Installation tools ··············································································································································1-5
Pre-installation checklist··································································································································1-6

1-1
1 Preparing for installation
Safety recommendations
To avoid any equipment damage or bodily injury, read the following safety recommendations before
installation. Note that the recommendations do not cover every possible hazardous condition.
Safety symbols
When reading this document, note the following symbols:
WARNING means an alert that calls attention to important information that if not understood or
followed can result in personal injury.
CAUTION means 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.
General safety recommendations
•
Make sure the installation site is flat, vibration-free, and away from electromagnetic
interferences. Make sure ESD and anti-slip measures are in place.
•
Do not place the device on an unstable case or desk. The device might be severely damaged in
case of a fall.
•
Keep the chassis and installation tools away from walk areas.
•
Keep the chassis clean and dust-free.
•
Do not place the device near water or in a damp environment. Prevent water or moisture from
entering the device chassis.
•
Ensure good ventilation of the equipment room and keep the air inlet and outlet vents of the
device free of obstruction.
•
Make sure the operating voltage is in the required range.
•
Use a screwdriver to fasten screws.
•
After you move the device from a location below0°C (32°F) to the equipment room, follow these
guidelines to prevent condensation:
Wait a minimum of 30 minutes before unpacking the device.
Wait a minimum of 2 hours before powering on the device.
Electrical safety
•
Carefully examine your work area for possible hazards, such as moist floors, ungrounded
power extension cables, or missing safety grounds.
•
Locate the emergency power-off switch in the room before installation. Shut off the power
immediately if an accident occurs.
•
Unplug all the external cables (including power cords) before moving the chassis.
•
Do not work alone when you operate the device with the device powered on.
•
Always verify that the power has been disconnected when you perform operations that require
the device to be powered off.

1-2
Laser safety
WARNING!
Do not stare into any
open apertures of operating transceiver modules or optical fiber connectors.
The laser light emitted from these apertures might hurt your eyes.
CAUTION:
•
Before you remove the optical fiber connector from a fiber port, execute the shutdown
command in interface view to shut down the port.
•
Insert a dust cap into any open optical fiber connector and a dust plug into any open fi
ber port or
transceiver module port to protect them from contamination and ESD damage.
Examining the installation site
The device can only be used indoors. To ensure correct operation and a long lifespan for your device,
the installation site must meet the requirements in this section.
Temperature and humidity
Maintain the temperature and humidity in the equipment room at acceptable levels.
•
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 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 device.
To ensure correct operation of the device, the equipment room must meet the temperature and
humidity requirements listed in Table1-1.
Table1-1 Temperature/humidity requirements in the equipment room
Operating temperature
Operating humidity
0°C to 45°C (32°F to 113°F) 5% RH to 95% RH (noncondensing)
Cleanliness
Dust buildup on the chassis can 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. To ensure correct operation, the
equipment room must meet the dust concentration requirements listed in Table1-2.
Table1-2 Dust concentration limit in the equipment room
Substance
Concentration limit (particles/m
3
)
Dust particles ≤ 3 x 104
(No visible dust on desk in three days)
NOTE:
Dust particle diameter ≥ 5 µm

1-3
To eliminate corrosion and premature aging of components, the equipment room must also meet
limits on salts, acids, and sulfides, as shown in Table1-3.
Table1-3 Harmful gas limits in an equipment room
Gas
Max. (mg/m
3
)
SO20.2
H2S 0.006
NH30.05
Cl20.01
NO20.04
Cooling
The device uses left-to-right airflow. For adequate heat dissipation of the device, follow these
guidelines:
•
Plan the installation site for the device based on the airflow direction
•
Reserve a minimum clearance of 100 mm (3.94 in) around the air vents.
•
Make sure the rack or workbench has a good ventilation system.
Figure1-1 Heat dissipation
ESD prevention
On the communication network, ESD comes from the following sources:
•
External electric field such as outdoor high-voltage power lines and thunder and lightning.
•
Indoor environment, floor materials, device materials, and device components.
To prevent electrostatic discharge (ESD), follow these guidelines:
•
Ground the device reliably.
•
Take dust-proof measures for the equipment room. For more information, see "Cleanliness."
•
Maintain the humidity and temperature at acceptable levels. For more information, see
"Temperature and humidity."
•
Before working with the device, wear ESD gloves and ESD garment, and remove conductive
objects such as jewelry or watch. Make sure the wrist strap makes good skin contact and is
reliably grounded.
•
Always remember to wear an ESD wrist strap when working with a transceiver module.

1-4
No ESD wrist strap is provided with the device. Prepare one yourself.
To attach an ESD wrist strap:
1. Wear the wrist strap on your wrist.
2. Lock the wrist strap tight around your wrist to maintain good contact with the skin.
3. Secure the wrist strap lock and the alligator clip lock together.
4. Attach the alligator clip to the rack.
5. Make sure the rack is reliably grounded.
Figure1-2 Attaching an ESD wrist strap
(1) Alligator clip
(2) ESD wrist strap
(3) Lock
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the device and application
system, adversely affect the device 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, perform the following tasks:
•
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 device far away from radio transmitting stations, radar stations, and high-frequency
devices.

1-5
•
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. If you must route interface cables outdoors, install
network port lightning protectors.
Lightning protection
To better protect the device from lightning, follow these guidelines:
•
Make sure the grounding cable of the chassis is grounded reliably.
•
Make sure the grounding terminal of the AC power receptacle is grounded reliably.
•
Install a lightning protector at the input end of the power supply to enhance the lightning
protection capability of the power supply.
Installation accessories
Figure1-3 Installation accessories for the device
Installation tools
No installation tools are provided with the device. Prepare installation tools as required.
Figure1-4 Installation tools

1-6
Pre-installation checklist
Table1-4 Pre-installation checklist
Item
Requirements
Result
Installation
site
Ventilation
•There is a minimum clearance of 100 mm (3.94 in))
around the device for heat dissipation.
•A good ventilation system is available at the
installation site.
Temperature 0°C to 45°C (32°F to 113°F)
Humidity 5% RH to 95% RH (noncondensing)
Cleanliness •Dust concentration ≤ 3 × 104particles/m3
•No dust on desk within three days
ESD prevention
•The equipment and rack or workbench are reliably
grounded.
•The equipment room is dust-proof.
•The humidity and temperature are at acceptable
levels.
•When you install removable modules, wear an ESD
wrist strap and make sure the strap makes good skin
contact and is reliably grounded.
EMI prevention
•Effective measures are taken for filtering interference
from the power grid.
•The protection ground of the device is away from the
grounding facility of power equipment or lightning
protection grounding facility.
•The device is far away from radio transmitting
stations, radar stations, and high-frequency devices.
•Electromagnetic shielding is used as required.
Lightning
protection
•The device is reliably grounded.
•The AC power source is reliably grounded.
•(Optional.) Network port lightning protectors are
installed.
•(Optional.) A surge protected power strip is installed.
Electricity safety
•A UPS is available.
•The power-off switch in the equipment room is
identified and accessible so that the power can be
immediately shut off when an accident occurs.
Rack-mounting
requirements
•The rack has a good ventilation system.
•The rack is sturdy enough to support the weight of the
device and installation accessories.
•The size of the rack is appropriate for the device.
•The front and rearof the rack are a minimum of 0.8 m
(31.50 in) away from walls or other devices.
Safety
precautions
•The device is far away from any moist area and heat source.
•You have located the emergency power switch in the equipment room.
Accessories Accessories provided with the device are available.
Reference •Documents shipped with the device are available.
•Online documents are available.

i
Contents
2 Installing the device·················································································2-1
Confirming installation preparations················································································································2-1
Installation flowchart········································································································································2-2
Mounting the device on a workbench ·············································································································2-3
Installing the device in a 19-inch rack·············································································································2-3
Installing the device in a 19-inch rack·············································································································2-3
Mounting brackets···································································································································2-4
Installing the device by using front and rear mounting brackets·····························································2-4
Installing the device by using front mounting brackets and a rack shelf·················································2-6
Installing the device by using front mounting brackets and slide rails·····················································2-8
Grounding the device······································································································································2-9
(Optional) Installing network port lightning protectors···················································································2-12
(Optional) Installing a surge protected power strip························································································2-13
Connecting the device to the network···········································································································2-14
Connecting Ethernet cables··················································································································2-14
Installing an expansion module·····················································································································2-15
Installing an expansion module on the front panel················································································2-15
Installing a drive············································································································································2-16
Installing a power supply·······························································································································2-17
Connecting the power cord···························································································································2-17
Connecting an AC power cord:·············································································································2-18
Connecting a DC power cord················································································································2-18
Verifying the installation································································································································2-19
Powering on the device·································································································································2-19

2-1
2 Installing the device
WARNING!
Keep the tamper
-
proof seal on a mounting screw on the chassis cover intact, and if you want to open
the chassis, contact
H3C Support for permission. Otherwise, H3C shall not be liable for any
consequence caused thereby.
Confirming installation preparations
Before you install the device, verify that you have read "Preparing for installation" carefully and the
installation site meets all the requirements.

2-2
Installation flowchart
Figure2-1 Installation flowchart
Start
End
Determine the
installation position
Install the device on
a workbench
Ground the device
Power on the device Troubleshoot the
device
Power off the device
Operating
correctly?
No
Install the device in
a 19-inch rack
(Optional) Install
network port
lightning protectors
(Optional) Install a
surge protected
power strip
Connect the device
to the network
Installing a power
supply
Installing an
expansion module
Installing a drive
Connecting the
power cord

2-3
Mounting the device on a workbench
CAUTION:
Do not place heavy objects on the device.
If a standard 19-inch rack is not available, you can mount the device on an anti-static workbench in
the equipment room.
To mount the device on a workbench:
1. Place the device upside down. Clean the recessed areas on the chassis bottom.
2. Attach the four rubber feet to the recessed areas on the chassis bottom.
3. Place the device on the workbench with the upside up. Make sure the four rubber feet stand
firmly on the workbench.
Figure2-2 Mounting the device on a workbench
Installing the device in a 19-inch rack
IMPORTANT:
Keep
a minimum distance of 1 U (44.45 mm, or 1.75 in) between devices in a rack for good heat
dissipation.
Installing the device in a 19-inch rack
You can install the device in a 19-inch rack by using the following methods:
•
Installing the device by using front and rear mounting brackets.
•
Installing the device by using front mounting brackets and a rack shelf.

2-4
•
Installing the device by using front mounting brackets and slide rails.
Mounting brackets
Figure2-3 Front mounting bracket
Figure2-4 Rear mounting bracket
Installing the device by using front and rear mounting
brackets
1. Wear the ESD wrist strap and make sure the rack is sturdy and is reliably grounded.
2. Use a front mounting bracket to mark the cage nut installation position on the front rack posts.
Install cage nuts.
Figure2-5 Installing cage nuts
3. Use the M3 screws supplied with the front mounting brackets to secure the front mounting
brackets to both sides of the device. Attach the shoulder screws supplied with the rear
mounting brackets to both sides of the device.
The shoulder screws will be in close contact with the rear mounting brackets to support the
device.

2-5
Figure2-6 Attaching the front mounting brackets to the device
4. According to the device installation position in the rack, use screws and cage nuts to attach the
rear mounting brackets to the rear rack posts.
Figure2-7 Installing rear mounting brackets
5. Supporting the bottom of the device with one hand and holding the front of the device with the
other, place the device slowly in the rack. Attach the front mounting brackets on the device to
the front rack posts with screws and cage nuts, as shown in Figure2-8. Make sure the
load-bearing screws are in close contact with the upper edges of the rear mounting brackets.

2-6
Figure2-8 Installing the device in the rack
Installing the device by using front mounting brackets and a
rack shelf
The rack shelf is an optional component that needs to be separately ordered if needed. The rack
shelf in this example is for illustration only.
To install the device by using front mounting brackets and a rack shelf:
1. Wear the ESD wrist strap and verify that the rack is sturdy and is reliably grounded.
2. Use the M3 screws supplied with the front mounting brackets to attach the front mounting
brackets to the device, as shown in Figure2-6.
3. Attach the rack shelf to the desired position in the rack. See Figure2-9 for reference.

2-7
Figure2-9 Installing the rack shelf
4. Place the device on the rack shelf and push the device in the rack. Attach the front mounting
brackets on the device to the front rack posts by using M6 screws and cage nuts, as shown in
Figure2-10.
Figure2-10 Installing the device in the rack

2-8
Installing the device by using front mounting brackets and
slide rails
The slide rails are optional components that need to be separately ordered if needed. The slide rails
in this example are for illustration only.
To install the device by using front mounting brackets and slide rails:
1. Wear the ESD wrist strap and verify that the rack is sturdy and is reliably grounded.
2. Use the screws supplied with the front mounting brackets to attach the front mounting brackets
to the device, as shown in Figure2-6.
3. Attach the slide rails to the rack. See Figure2-11 for reference.
Figure2-11 Installing slide rails
4. Holding both sides of the device, push the device in the rack along the slide rails, as shown in
Figure2-12. Make sure the chassis bottom makes close contact with the bottom flanges of the
slide rails.