H3C S6520-EI Series User manual

H3C S6520-EI Switch Series
Installation Guide
New H3C Technologies Co., Ltd.
http://www.h3c.com.hk
Document version: 6W100-20180115

Copyright © 2018, 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
H3C, , H3CS, H3CIE, H3CNE,Aolynk, , H3Care, , IRF, NetPilot, Netflow, SecEngine,
SecPath, SecCenter, SecBlade, Comware, ITCMM and HUASAN are trademarks of New H3C Technologies
Co., Ltd.
All other trademarks that may be mentioned in this manual are the property of their respective owners
Notice
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
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 S6520-EI Switch Series Installation Guide describes the appearance, installation, power-on,
maintenance, and troubleshooting of the H3C S6520-EI Switch Series.
This preface includes the following topics about the documentation:
•Audience.
•Conventions
•Obtaining documentation
•Technical support
•Documentation feedback
Audience
This documentation is intended for:
•Network planners.
•Field technical support and servicing engineers.
•Network administrators working with the S6520-EI 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.

Convention Description
> 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.
Wireless terminator unit.
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.
Obtaining documentation
To access the most up-to-date H3C product documentation, go to the H3C website at
http://www.h3c.com.hk
To obtain information about installation, configuration, and maintenance, click
http://www.h3c.com.hk/Technical_Documents
To obtain software version information such as release notes, click
http://www.h3c.com.hk/Software_Download
Technical support
[e-mail]
http://www.h3c.com.hk
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
Mounting brackets and rack mounting rail kit ·············································································5
Rack-mounting procedures at a glance ····················································································5
Attaching the mounting brackets, chassis rails, and grounding cable to the chassis ···························6
Attaching the slide rails to the rack ··························································································8
Mounting the switch in the rack ······························································································9
Grounding the switch ················································································································ 10
Grounding the switch with a grounding strip ············································································ 10
Grounding the switch by using the AC power cord ···································································· 11
Installing/removing a fan tray ······································································································ 12
Installing a fan tray ············································································································ 12
Removing a fan tray··········································································································· 13
Installing/removing a power module ····························································································· 13
Installing a power module···································································································· 14
Removing a power module ·································································································· 15
Connecting the power cord ········································································································ 17
Connecting the AC power module ························································································· 17
Connecting the DC power module························································································· 17
Verifying the installation············································································································· 18
Accessing the switch for the first time ················································· 19
Setting up the configuration environment ······················································································ 19
Connecting the console cable ····································································································· 19
Console cable··················································································································· 19
Connection procedure ········································································································ 19
Setting terminal parameters ······································································································· 20
Powering on the switch ············································································································· 23
Setting up an IRF fabric ···································································24
IRF fabric setup flowchart ·········································································································· 24
Planning IRF fabric setup··········································································································· 25
Planning IRF fabric size and the installation site······································································· 25
Identifying the master switch and planning IRF member IDs ······················································· 25
Planning IRF topology and connections·················································································· 25
Identifying physical IRF ports on the member switches ······························································ 26
Planning the cabling scheme ······························································································· 27
Configuring basic IRF settings ···································································································· 28
Connecting the physical IRF ports ······························································································· 29
Accessing the IRF fabric to verify the configuration ········································································· 29
Maintenance and troubleshooting ······················································30
Power module failure ················································································································ 30
Symptom ························································································································· 30
Solution··························································································································· 30
Fan tray failure ························································································································ 30
Symptom ························································································································· 30
Solution··························································································································· 30

ii
No display on the configuration terminal························································································ 31
Symptom ························································································································· 31
Solution··························································································································· 31
Garbled display ······················································································································· 31
Symptom ························································································································· 31
Solution··························································································································· 31
Appendix A Chassis views and technical specifications ··························32
Chassis views ························································································································· 32
S6520-42QF-EI················································································································· 32
S6520-48S-EI··················································································································· 33
S6520-52QF-EI················································································································· 34
Technical specifications············································································································· 35
Appendix B FRUs and compatibility matrixes ······································· 37
Power modules ······················································································································· 37
Fan trays································································································································ 37
Appendix C Ports and LEDs ····························································· 39
Ports ····································································································································· 39
Console port····················································································································· 39
Management Ethernet port ·································································································· 39
USB port ························································································································· 39
SFP+ port ························································································································ 40
QSFP+ port······················································································································ 41
System status LED ············································································································ 43
SFP+ port LED ················································································································· 43
QSFP+ port LED ··············································································································· 44
Management Ethernet port LEDs ·························································································· 44
Appendix D Cooling system······························································ 45
Index ···························································································46

1
Preparing for installation
The H3C S6520-EI Switch Series includes the following models:
•S6520-42QF-EI.
•S6520-48S-EI.
•S6520-52QF-EI.
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.
•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 good ventilation of the equipment room and keep the air inlet and outlet vents of the
switch free of obstruction.
•Make sure the operating voltage is in the required range.
•To avoid electrical shocks, do not open the chassis while the switch is operating or when the
switch is just powered off.
•When replacing 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 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 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 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.
•Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical
property change of materials, and metal corrosion.

2
•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 of different switch models, 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 x 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.

3
Laser safety
WARNING!
Do not stare into any fiber port when the switch has power. The laser light emitted from the optical
fiber might hurt your eyes.
The switch is a Class 1 laser device.
Installation tools
The installation tools are not provided with the switch. Prepare them yourself.
•Phillips screwdriver
•ESD wrist strap

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

5
Installing the switch in a 19-inch rack
Mounting brackets and rack mounting rail kit
The switch comes with a pair of mounting brackets (see Figure 2) and a rack mounting kit that
includes a pair of chassis rails and a pair of slide rails (see Figure 3).
Figure 2 Mounting brackets
Figure 3 Rack mounting rail kit
(1) Chassis rail (2) Slide rail
Rack-mounting procedures at a glance
Figure 4 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 3.
•To secure the switch to the rack, you must install not only mounting brackets, but also chassis
rails and slide rails.

6
Table 3 Distance requirements between the front and rear rack posts
Switch model Installation method Minimum
distance Maximum distance
•S6520-42QF-EI
•S6520-48S-EI
•S6520-52QF-EI
Using mounting brackets and short
slide rails (supplied with the switch) 401 mm (15.79 in) 654 mm (25.75 in)
Using mounting brackets and long
slide rails (optional) 621 mm (24.45 in) 874 mm (34.41 in)
Attaching the mounting brackets, chassis rails, and
grounding cable to the chassis
The switch has two mounting positions for mounting brackets: network port-side mounting position
and power module-side mounting position.
The 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 5 Mounting bracket installation positions and grounding points
(1) Auxiliary grounding point 2 (2) Power module-side mounting position for mounting brackets
(3) Primary grounding point (4) Auxiliary grounding point 1
(5) Network port-side mounting position for mounting brackets
Attaching the mounting brackets and chassis rails to the chassis
1. Align the mounting brackets with the screw holes in the power module-side mounting position
(see Figure 6) or network port-side mounting position (see Figure 7).
2. Use M4 screws (supplied with the switch) to attach the mounting brackets to the chassis.
3. Align the chassis rails with the mounting holes in the chassis:
{If the mounting brackets are in the power module-side mounting position, align the chassis
rails with the screw holes at the front of the side panels (see Figure 6).
{If the mounting brackets are in the network port-side mounting position, align the chassis
rails with the screw holes at the rear of the side panels (see Figure 7).
4. Use M4 screws (supplied with the switch) to attach the chassis rails to the chassis.

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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.
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.
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 6.
Figure 6 Attaching the mounting brackets/chassis rails/grounding cable to the chassis
(power module-side mounting position for mounting brackets)

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Figure 7 Attaching the mounting brackets/chassis rails to the chassis (network port-side
mounting position for mounting brackets)
NOTE:
As a best practice, 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.
Attaching the slide rails to the rack
1. Identify the rack attachment position for the slide rails, and mark cage nut installation positions
on the rack posts.
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 8.
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.
Figure 8 Installing the slide rails

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Mounting the switch in the rack
This task requires two people.
To mount the switch in the rack:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is well grounded.
2. Verify that the mounting brackets and chassis rails have been securely attached to the switch
chassis.
3. Verify 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 9. 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 10.
To secure the switch in the rack, make sure the front ends of the slide rails reach out of the
chassis rails.
Figure 9 Mounting the switch in the rack (1)

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Figure 10 Mounting the switch in the rack (2)
Grounding the switch
WARNING!
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.
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
WARNING!
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:

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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 ring terminal at the other end of the grounding cable to the grounding strip through
the grounding post, and fasten the ring terminal with the removed hex nut.
Figure 11 Connecting the grounding cable to a grounding strip
(1) Hex nut (2) Ring terminal
(3) Grounding post (4) Grounding strip
NOTE:
•As a best practice, 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 switch, prepare a grounding cable yourself. The
connection method is the same as connecting to the other two grounding 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 ground contact in the power outlet is not connected to the ground, report the problem and
reconstruct the grounding system.

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Figure 12 Grounding through the PE wire of the AC power cord
(1) Three-wire AC power cord (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.
Installing/removing a fan tray
CAUTION:
To ensure good ventilation for the switch:
•Install two fan trays of the same model on the switch.
•Do not operate the system with one failed fan tray for more than 24 hours.
•Do not remove the failed fan tray until you are ready for replacing it.
•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.
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.
Select appropriate fan trays as needed. For the optional fan trays and their specifications, see "Fan
trays."

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To install a fan tray:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is well grounded.
2. Unpack the fan tray and verify 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 13).
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 13).
If the captive screw cannot be tightly fastened, verify the installation of the fan tray.
Figure 13 Installing an LSWM1FANSC/LSWM1FANSCB/LSWM1HFANSC/LSWM1HFANSCB
fan tray (on the S6520-52QF-EI)
Removing a fan tray
WARNING!
•Take out the fan tray after the fans completely stop rotating.
•To avoid an unbalanced fan causing loud noise, do not touch the fans, even if they are not
rotating.
To remove a fan tray:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is well grounded.
2. Loosen the captive screw of the fan tray with a Philips screwdriver until it is fully disengaged
from the switch chassis.
3. Grasp the handle of the fan tray with one hand and pull the fan tray part way out the slot.
Support the fan tray bottom with the other hand, and pull the fan tray slowly along the guide rails
out of the slot.
4. Put away the removed fan tray in an antistatic bag for future use.
Installing/removing a power module
WARNING!
In power redundancy mode, you can replace a power module without powering off the switch but
must strictly follow the installation and procedures in Figure 14 and Figure 15 to avoid any bodily
injury or damage to the switch.