H3C S6820 Series User manual

H3C S6820 Switch Series
Installation Guide
New H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 6W106-20190710

Copyright © 2019, 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 S6820 Switch Series Installation Guide describes the appearance, installation, power-on,
maintenance, and troubleshooting for the H3C S6820 Switch Series.
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 S6820 switch series.
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 >
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.
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.
T
T
T
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Documentation feedback
You can e-mail your comments about product documentation to [e-mail].
We appreciate your comments.

i
Contents
Preparing for installation ····································································1
Safety recommendations ·············································································································1
Examining the installation site·······································································································1
Temperature/humidity ··········································································································1
Cleanliness ························································································································2
EMI ··································································································································2
Laser safety ·······················································································································3
Installation tools·························································································································3
Installing the switch ··········································································4
Installing the switch in a 19-inch rack ·····························································································5
Installation accessories·········································································································5
Mounting brackets, chassis rails, and grounding cable installation positions ·····································7
Rack-mounting procedures at a glance ····················································································9
Attaching the mounting brackets and chassis rails to the chassis················································· 10
Connecting the grounding cable to the chassis ········································································ 14
Attaching the slide rails to the rack ························································································ 15
Mounting the switch in the rack ···························································································· 16
Grounding the switch ················································································································ 18
Installing/removing fan trays ······································································································· 19
Installing a fan tray ············································································································ 19
Removing a fan tray··········································································································· 20
Installing/removing power modules ······························································································ 21
Installing a power module···································································································· 21
Removing a power module ·································································································· 22
Connecting the power cords ······································································································· 24
Connecting an AC power cord······························································································ 24
Connecting a DC power cord ······························································································· 24
Installing/removing expansion cards ······················································································ 25
Verifying the installation············································································································· 27
Accessing the switch for the first time ················································· 28
Setting up the configuration environment ······················································································ 28
Connecting the console cable ····································································································· 28
Connecting the mini USB console cable························································································ 29
Setting terminal parameters ······································································································· 31
Powering on the switch ············································································································· 31
Setting up an IRF fabric ···································································33
IRF fabric setup flowchart ·········································································································· 33
Planning IRF fabric setup··········································································································· 34
Planning IRF fabric size and the installation site······································································· 34
Identifying the master switch and planning IRF member IDs ······················································· 34
Planning IRF topology and connections·················································································· 34
Identifying physical IRF ports on the member switches ······························································ 36
Planning the cabling scheme ······························································································· 36
Configuring basic IRF settings ···································································································· 38
Connecting the physical IRF ports ······························································································· 38
Accessing the IRF fabric to verify the configuration ········································································· 38
Maintenance and troubleshooting ······················································39
Power module failure ················································································································ 39
Symptom ························································································································· 39
Solution··························································································································· 39
Fan tray failure ························································································································ 39
Symptom ························································································································· 39
Solution··························································································································· 39

ii
Configuration terminal display problems························································································ 40
No display························································································································ 40
Garbled display················································································································· 40
Appendix A Chassis views and technical specifications ··························41
Chassis views ························································································································· 41
S6820-32H ······················································································································ 41
S6820-56HF····················································································································· 42
S6820-4C ························································································································ 44
Technical specifications············································································································· 45
Appendix B FRUs··········································································· 47
Power modules ······················································································································· 47
Fan trays································································································································ 48
Expansion cards ······················································································································ 48
Appendix C Ports and LEDs ····························································· 50
Ports ····································································································································· 50
Console port····················································································································· 50
Management Ethernet port ·································································································· 50
FE SFP modules ··············································································································· 51
USB port ························································································································· 51
SFP+ port ························································································································ 51
SFP port·························································································································· 53
QSFP28 port ···················································································································· 53
QSFP+ port······················································································································ 56
SFP28 port ······················································································································ 56
LEDs····································································································································· 58
System status LED ············································································································ 58
QSFP28 port LED ············································································································· 58
SFP28 port LED················································································································ 58
SFP+ port LED ················································································································· 59
SFP port LED ··················································································································· 59
Management Ethernet port LEDs ·························································································· 59
Fan tray alarm LEDs ·········································································································· 60
Appendix D Cooling system······························································ 61
Index ···························································································63

1
Preparing for installation
The H3C S6820 Switch Series includes the following models:
•S6820-32H.
•S6820-56HF.
•S6820-4C.
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 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 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 field replaceable units (FRUs), including power modules and fan trays, wear an
ESD wrist strap to avoid damaging the units.
Examining the installation site
The switch must be used indoors.
Mount your switch in a rack and verify the following items:
•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 appropriate temperature and humidity in the equipment room.

2
•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.
•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 for the switch, see "Technical specifications."
Cleanliness
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 1 Dust concentration limit in the equipment room
Substance Concentration limit (particles/m³)
Dust ≤3 × 104 (no visible dust on the tabletop over three days)
NOTE:
Dust diameter ≥5 μm
The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and
premature aging of components, as shown in Table 2.
Table 2 Harmful gas limits in the equipment room
Gas Maximum concentration (mg/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 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, 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.

3
Laser safety
WARNING!
•The switch is a Class 1M laser device.
•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.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself:
•Phillips screwdriver.
•ESD wrist strap.
•Marker.

4
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.
Figure 1 Hardware installation flow
Start
Install the switch
Ground the switch
Connect power cords
Verify the installation
Turn on the circuit
breakers
Operating correctly? Turn off the circuit
breakers
Troubleshoot the
switch
Install expansion
cards?
Yes
Yes
No
No
Install expansion cards
Operating correctly?
Yes
No Resolve the
problem
End
Install power modules
Install fan trays

5
Installing the switch in a 19-inch rack
IMPORTANT:
To install the switch in a 19-inch rack, make sure the rack has a minimum depth of 1000 mm (39.37
in) so that the rack door can be closed easily.
Installation accessories
Table 3 Installation accessories
Switch
model
Mounting
brackets
(provided)
Cable management
brackets Rack mounting rail kit
S6820-32H 1U high, one pair.
See Figure 2. N/A
•1U high, including one pair of long slide
rails and one pair of chassis rails
(provided). See Figure 7.
•1U high, including one pair of short
slide rails and one pair of chassis rails
(optional). See Figure 6.
S6820-56HF 1U high, one pair.
See Figure 3.N/A
•1U high, including one pair of long slide
rails and one pair of chassis rails
(provided). See Figure 7.
•1U high, including one pair of
super-short slide rails and one pair of
chassis rails (optional). See Figure 5.
S6820-4C 2U high, one pair.
See Figure 4.
One pair (provided).
See Figure 4.
•2U high, including one pair of slide rails
and one pair of chassis rails (provided).
See Figure 8.
Figure 2 Mounting brackets provided with the S6820-32H switch

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Figure 3 Mounting brackets provided with the S6820-56HF switch
Figure 4 Mounting brackets provided with the S6820-4C switch
(1) Cable management bracket (2) Mounting bracket
Figure 5 1U super-short slide rail and chassis rail
(1) Chassis rail (2) Super-short slide rail
1 2

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Figure 6 1U short slide rail and chassis rail
(1) Chassis rail (2) Short slide rail
Figure 7 1U long slide rail and chassis rail
(1) Chassis rail (2) Long slide rail
Figure 8 2U slide rail and chassis rail
(1) Chassis rail (2) Slide rail
Mounting brackets, chassis rails, and grounding cable
installation positions
The switch has one mounting position near the network ports and one mounting position near the
power modules for mounting brackets.
1 2

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The S6820-4C switch provides three grounding points: primary grounding point (with a grounding
sign), auxiliary grounding point 1, and auxiliary grounding point 2. The S6820-32H and S6820-56HF
switches provide two grounding points: primary grounding point (with a grounding sign) and auxiliary
grounding point. See Figure 9, Figure 10, and Figure 11.
Select installation positions for the mounting brackets, chassis rails, and grounding cable as
required.
Figure 9 Mounting brackets and grounding cable installation positions on the S6820-32H
switch
(1) Power module-side mounting position (2) Primary grounding point
(3) Auxiliary grounding point (4) Port-side mounting position
Figure 10 Mounting brackets and grounding cable installation positions on the S6820-56HF
switch
(1) Power module-side mounting position (2) Primary grounding point
(3) Auxiliary grounding point (4) Port-side mounting position

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Figure 11 Mounting brackets and grounding cable installation positions on the S6820-4C
switch
(1) Auxiliary grounding point 2 (2) Power module-side mounting position
(3) Primary grounding point (4) Port-side mounting position
(5) Auxiliary grounding point 1
Rack-mounting procedures at a glance
Figure 12 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.
Follow these guidelines when you install the switch in a 19-inch rack:
•The distance between the front and rear posts of the rack must meet the requirements
described in Table 4.
•To secure the switch to the rack, you must install not only mounting brackets, but also chassis
rails and slide rails.
Table 4 Distance requirements between the front and rear rack posts
Switch
model Installation method Minimum distance
between the front
and rear rack posts
Maximum distance
between the front
and rear rack posts
S6820-32H
Using the mounting brackets and
long slide rails (provided) 621 mm (24.45 in) 934 mm (36.77 in)
Using the mounting brackets and
short slide rails (optional) 401 mm (15.79 in) 714 mm (28.11 in)
1 2 34
5

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Switch
model Installation method Minimum distance
between the front
and rear rack posts
Maximum distance
between the front
and rear rack posts
S6820-56HF
Using the mounting brackets and
long slide rails (provided) 692 mm (27.24 in) 854 mm (33.62 in)
Using the mounting brackets and
super-short slide rails (optional,
with the chassis rails not reaching
out of the chassis)
401 mm (15.79 in) 565 mm (22.24 in)
Using the mounting brackets and
super-short slide rails (optional,
with chassis rails reaching out of
the chassis)
499 mm (19.65 in) 692 mm (27.24 in)
S6820-4C Using the mounting brackets and
slide rails (provided) 518 mm (20.40 in) 858 mm (33.78 in)
Attaching the mounting brackets and chassis rails to the
chassis
1. Place the wide flange of the mounting bracket against the chassis side panel. Align the
mounting bracket installation holes with the screw holes in the chassis. Use M4 screws
(provided) to attach the mounting bracket to the chassis.
{To install the mounting brackets at the power module-side mounting position, see Figure
13,Figure 14,Figure 15,Figure 16, and Figure 17.
{To install the mounting brackets at the port-side mounting position, see Figure 18,Figure
19, Figure 20,Figure 21, and Figure 22.
For the S6820-56HF and S6820-4C switches, to install the mounting brackets at the power
module-side mounting position, use the four screw holes nearest to the power module side. To
install the mounting brackets at the network port-side mounting position, use the four screw
holes nearest to the network port side.
2. Determine the chassis rail installation position:
{If the mounting brackets are installed at the power module-side mounting position, install
the chassis rails near the port side.
{If the mounting brackets are installed at the network port-side mounting position, install the
chassis rails near the power module side.
3. Place the chassis rail against the chassis side panel. Align the chassis rail installation holes with
the screw holes. Use M4 screws (provided) to attach the chassis rail to the chassis. See Figure
13 to Figure 22.
You can use super-short slide rails and long chassis rails to rack-mount the S6820-56HF switch.
Based on the rack depth, install the long chassis rails not reaching out of the chassis, as shown
in Figure 15 and Figure 20 or reaching out of the chassis, as shown in Figure 16 and Figure 21.

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Figure 13 Attaching the mounting brackets and chassis rails to the S6820-32H switch (power
module-side mounting position for the mounting brackets)
Figure 14 Attaching the mounting brackets and short chassis rails to the S6820-56HF switch
(power module-side mounting position for the mounting brackets)
Figure 15 Attaching the mounting brackets and long chassis rails to the S6820-56HF switch
(power module-side mounting position for the mounting brackets, chassis rails not reaching
out of the chassis)

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Figure 16 Attaching the mounting brackets and long chassis rails to the S6820-56HF switch
(power module-side mounting position for the mounting brackets, chassis rails reaching out
of the chassis)
Figure 17 Attaching the mounting brackets and chassis rails to the S6820-4C switch (power
module-side mounting position for the mounting brackets)
Figure 18 Attaching the mounting brackets and chassis rails to the S6820-32H switch
(network port-side mounting position for the mounting brackets)

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Figure 19 Attaching the mounting brackets and short chassis rails to the S6820-56HF switch
(network port-side mounting position for the mounting brackets)
Figure 20 Attaching the mounting brackets and long chassis rails to the S6820-56HF switch
(network port-side mounting position for the mounting brackets, chassis rails not reaching
out of the chassis)
Figure 21 Attaching the mounting brackets and long chassis rails to the S6820-56HF switch
(network port-side mounting position for the mounting brackets, chassis rails reaching out
of the chassis)