H3C S5850 Series User manual

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Contents
1 Preparing for installation··········································································1-1
Safety recommendations ································································································································1-1
Examining the installation site·························································································································1-1
Temperature/humidity·····························································································································1-1
Cleanliness··············································································································································1-2
Corrosive gas limit···································································································································1-2
EMI··························································································································································1-3
Laser safety·············································································································································1-3
Installation tools ··············································································································································1-4
Installation accessories···································································································································1-4
2 Installing the switch··················································································2-1
Installing the switch in a 19-inch rack··············································································································2-1
Installation methods································································································································2-2
Rack mounting accessories····················································································································2-2
Rack-mounting by using front and rear mounting brackets·····································································2-4
Rack-mounting by using front mounting brackets and rack mounting rail kit··········································2-6
Mounting the switch on a workbench············································································································2-10
Grounding the switch ····································································································································2-10
Grounding the switch with a grounding strip·························································································2-10
Grounding the switch with a grounding conductor buried in the earth ground······································2-11
Installing/removing a fan tray························································································································2-12
Installing a fan tray································································································································2-13
Removing a fan tray······························································································································2-13
Installing/removing a power module ·············································································································2-14
Installing a power module ·····················································································································2-14
Removing a power module ···················································································································2-15
Connecting the power cord···························································································································2-16
Connecting the power cord for a PSR150-A1 power module ·······························································2-16
Connecting the power cord for a PSR150-D1 power module·······························································2-17
Verifying the installation································································································································2-18
3 Accessing the switch for the first time······················································3-1
Setting up the configuration environment ·······································································································3-1
Connecting a console cable····························································································································3-1
Connecting a DB9-to-RJ45 console cable······························································································3-1
Connecting a USB-to-RJ45 console cable······························································································3-2
Connecting a Mini USB console cable············································································································3-4
Setting terminal parameters····························································································································3-6
Powering on the switch···································································································································3-6
4 Setting up an IRF fabric···········································································4-1
IRF fabric setup flowchart ·······························································································································4-1
Planning IRF fabric setup································································································································4-2
Planning IRF fabric size and the installation site·····················································································4-2
Identifying the master switch and planning IRF member IDs··································································4-2
Planning IRF topology and connections··································································································4-2
Identifying physical IRF ports on the member switches··········································································4-3
Planning the cabling scheme··················································································································4-4
Configuring basic IRF settings························································································································4-5
Connecting the physical IRF ports··················································································································4-5
Verifying the IRF fabric setup··························································································································4-6
5 Maintenance and troubleshooting····························································5-1
Power module failure ······································································································································5-1
Symptom·················································································································································5-1
Solution···················································································································································5-1

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Fan tray failure················································································································································5-1
Symptom·················································································································································5-1
Solution···················································································································································5-1
Configuration terminal display problems·········································································································5-2
No display ···············································································································································5-2
Garbled display·······································································································································5-2

1-1
1 Preparing for installation
H3C S5850 Switch Series includes only the S5850-54QS switch model.
Safety recommendations
To avoid any equipment damage or bodily injury caused by improper use, read the following safety
recommendations before installation. Note that the recommendations do not cover every possible
hazardous condition.
•
Before cleaning the switch, 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.
•
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. You can mount your switch in a rack or on a workbench, but make
sure:
•
Adequate clearance is reserved at the air inlet and outlet vents for ventilation.
•
The rack or workbench 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 device from entering the device.
•
The rack is sturdy enough to support the switch and its accessories.
•
The rack or workbench 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
For correct operation and long service life of your switch, maintain the temperature and humidity in
the equipment room at acceptable ranges.
•
Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical
property change of materials, and metal corrosion.

1-2
•
Lasting low relative humidity can cause washer contraction and ESD and cause issues
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 the switch, see technical specifications in
Hardware Information and Specifications.
Cleanliness
Dust buildup on the chassis might cause electrostatic adsorption and dust corrosion, resulting in
poor contact of metal connectors and contact points. This might shorten the device's lifetime and
even cause device failure in the worst case. Table1-1 describes the dust concentration limits in the
equipment room.
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)
To maintain cleanliness in the equipment room, follow these guidelines:
•
Keep the equipment room away from pollution sources. Do not smoke, eat, or drink in the
equipment room.
•
Use double-layer glass in windows and seal doors and windows with dust-proof rubber strips.
Use screen doors and window screens for doors and windows open to the outside and make
sure the external windows are air tight.
•
Use dustproof materials for floors, walls, and ceilings and use wallpaper or matt paint that does
not produce powders.
•
Clean the equipment room regularly and clean the air filters of the rack each month.
•
Wear ESD clothing and shoe covers before entering the equipment room, keep the ESD
clothing and shoe covers clean, and change them frequently.
Corrosive gas limit
Corrosive gases can accelerate corrosion and aging of metal 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

1-3
Gas Average concentration (mg/m3) Maximum concentration (mg/m3)
O30.05 0.1
NOX0.5 1.0
CAUTION:
As a best practice, control the
corrosive gas concentrations in the equipment room at their
average
values
. Make sure the corrosive gas concentrations do not exceed 30 minutes per day at their
maximum values.
To control corrosive gases, use the following guidelines:
•
As a best practice, do not build the equipment room in a place with a high concentration of
corrosive gases.
•
Make sure the equipment room is not connected to sewer, vertical shaft, or septic tank pipelines
and keep it far away from these pipelines. The air inlet of the equipment room must be away
from such pollution sources.
•
Use environmentally friendly materials to decorate the equipment room. Avoid using organic
materials that contains harmful gases, such as sulfur or chlorine-containing insulation cottons,
rubber mats, sound-proof cottons, and avoid using plasterboards with high sulfur concentration.
•
Place fuel (diesel or gasoline) engines separately. Do not place them in the same equipment
room with the device. Make sure the exhausted air of the engines will not flow into the
equipment room or towards the air inlet of the air conditioners.
•
Place batteries separately. Do not place them in the same room with the device.
•
Employ a professional company to monitor and control corrosive gases in the equipment room
regularly.
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.
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.

1-4
The switch is a Class 1M laser device.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself as required:
•
Flat-head screwdriver
•
Phillips screwdriver
•
Needle-nose pliers
•
Diagonal pliers
•
ESD wrist strap
•
Marker
Installation accessories
Table1-3 Installation accessories
Item Product code Quantity
Front mounting bracket kit
2150A03X 1 kit, including one pair of front mounting
brackets and eight M4 screws
Rear mounting bracket kit
2150A0BP 1 kit, including one pair of rear mounting
brackets and two shoulder screws
Slide rail and chassis rail
2150A050 1 kit
M6 screw
N/A 8, user-supplied
Cage nut
N/A 8, user-supplied
Rubber feet 63200063 1 kit

1-5
Item Product code Quantity
Grounding cable
0404A06S 1
Grounding screw
26010550 1
AC power cord
NOTE:
The AC power cord in this figure is for
illustration only. The AC power cord for
your country or region might differ from this
one.
04041104 1, provided with the PSR150-A1 power
module
DC power cord
0404A04V 1, provided with the PSR150-D1 power
module
AC power cord retainer clip
N/A 1, provided with the PSR150-A1 power
module
DB9-to-RJ45 console cable
04042967 1, optional
USB-to-RJ45 console cable
0404A1EE 1, optional
Mini USB console cable N/A 1, user-supplied

1-6
Item Product code Quantity

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.
Figure2-1 Hardware installation flow
Installing the switch in a 19-inch rack
IMPORTANT:
As a best practice, use a torque of 12 kgf
-cm (1.18 Nm), 30 kgf-cm (2.94 Nm), and 12 kgf-cm (
1.18
Nm) to fasten M4, M6, and shoulder screws, respectively.
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 transceiver modules and
cables
Yes
Install the switch

2-2
Installation methods
Table2-2 Installation methods
Installation
methods Installation requirements Installation procedure
Using front and rear
mounting brackets
•Install the front mounting brackets at the
port side or power module side.
•Install the rear mounting brackets
according to the rack depth.
If the rack depth is in the range of 329
to 495 mm (12.95 to 19.49 in), orient
the bracket with the wide flange inside
the rack.
If the rack depth is in the range of 174
to 341 mm (6.85 to 13.43 in) and the
distance from the rear rack posts to the
inner surface of the cabinet door is
longer than 153 mm (6.02 in), orient
the bracket with the wide flange
outside the rack.
As a best practice, use this method for
enterprise networks.
See "Rack-mounting by using
front and rear mounting
brackets."
Using front mounting
brackets and mounting
rail assemblies
•Install the front mounting brackets at the
port side or power module side.
•The distance between the front rack post
and the rear rack post must bein the range
of 561 to 772 mm (22.09 to 30.39 in).
As a best practice, use this method to
rack-mount a switch in data centers.
See "Rack-mounting by using
front mounting brackets and
rack mounting rail kit."
Figure2-2 Rack-mounting procedure by using the front and rear mounting brackets
Figure2-3 Rack-mounting procedure by using front mounting brackets and rack mounting
rail kit
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 by using the mounting brackets.
Rack mounting accessories
Table2-3 Rack mounting accessories
Installation accessories S5850-54QS
Front mounting brackets (Figure2-4) Provided
Identify the mounting position
(port side or power module side)
for the mounting brackets
Attach the front mounting
brackets to the two sides
of the switch
Attach the shoulder
screws to the switch
Attach the rear
mounting brackets to
the rack posts
Mount the switch in
the rack
Identify the mounting position
(port side or power module side)
for the mounting brackets
Attach the chassis
rails to the two sides
of the switch
Attach the slide rails
to the rack Mount the switch in the rack

2-3
Installation accessories S5850-54QS
Rear mounting brackets and shoulder screws
(Figure2-5) Provided
Chassis rails and slide rails (Figure2-6) Optional
Figure2-4 Front mounting bracket
(1) Hole for attaching the bracket to a rack
(2) Hole for attaching the bracket to the switch chassis
(3) M4 screw
Figure2-5 Rear mounting bracket and shoulder screw
(1) Hole for attaching the bracket to a rack
(2) Shoulder screw
Figure2-6 Rack mounting rail kit
(1) Chassis rail
(2) Slide rail
1
2
3
12
1 2

2-4
Rack-mounting by using front and rear mounting brackets
You can install the front mounting brackets at the port-side or power-side mounting position as
needed. The following takes port-side mounting as an example. The power-side mounting is similar.
This task requires two people.
To install the switch in a 19-inch rack by using the front and rear mounting brackets:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Attach the front mounting brackets and shoulder screws to the chassis:
a. Unpack the front mounting brackets and the M4 screws for attaching the brackets to the
switch chassis.
b. Align the round holes in the wide flange of one front mounting bracket with the screw holes
in the port-side mounting position on one side of the chassis (see Figure2-7).
c. Use M4 screws (supplied with the switch) to attach the mounting bracket to the chassis.
d. Repeat the proceeding two steps to attach the other mounting bracket to the chassis.
e. Unpack the shoulder screws.
f. Install the shoulder screws. Attach the shoulder screw to one of the two installation positions
as red-marked in Figure2-7.
Figure2-7 Attaching the front mounting brackets and shoulder screws to the chassis
3. Attach the rear mounting brackets to the rack:
Orient the rear mounting brackets with the wide flange inside or outside the rack as required.
a. Install cage nuts (user-supplied) in the mounting holes in the rear rack posts. Make sure the
corresponding cage nuts on the left and right rear rack posts are at the same height.
b. Attach the rear mounting brackets to the rear posts with M6 screws (user supplied), as
shown in Figure2-8.
Do not fully tighten the M6 screws before mounting the switch in the rack.

2-5
Figure2-8 Attaching the rear mounting brackets to a rack with the wide flange inside the
rack
Figure2-9 Attaching the rear mounting brackets to a rack with the wide flange outside
the rack
4. Mount the switch chassis in the rack:
a. One person supports the chassis bottom with one hand, holds the front part of the chassis
with the other hand, and pushes the chassis into the rack gently.
Make sure the shoulder screws closely contact with the upper edges of the rear mounting
brackets, as shown in Figure2-10.
b. The other person attaches the front mounting brackets with M6 screws (user-supplied) and
cage nuts to the front rack posts.

2-6
Make sure the front and rear mounting brackets have securely attached the switch to the
rack.
Figure2-10 Mounting the switch in the rack (with the wide flange of the mounting
brackets inside the rack)
Figure2-11 Mounting the switch in the rack (with the wide flange of the mounting brackets
outside the rack)
Rack-mounting by using front mounting brackets and rack
mounting rail kit
You can install the front mounting brackets at the port-side or power-side mounting position as
needed. The following procedure installs the front mounting brackets to the port side of the switch.
The power-side mounting is similar.
This task requires two people.

2-7
To install the switch in a 19-inch rack by using the front mounting brackets and mounting rail
assemblies:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Attach the front mounting brackets and the chassis rails to the chassis (see Figure2-12):
a. Unpack the front mounting brackets and the M4 screws for attaching the brackets to the
switch chassis.
b. Align the round holes in the wide flange of one front mounting bracket with the screw holes
in the power-side mounting position on one side of the chassis.
c. Use M4 screws (supplied with the switch) to attach the mounting bracket to the chassis.
d. Align one chassis rail with the screw holes in the chassis rail mounting position.
e. Use M4 screws (supplied with the switch) to attach the chassis rail to the chassis.
f. Repeat the proceeding steps to attach the other mounting bracket and chassis rail to the
other side of the chassis.
Figure2-12 Attaching the front mounting brackets and chassis rails to the chassis
3. Attach the slide rails to the rack:
a. Identify the rack attachment position for the slide rails.
b. Install cage nuts (user-supplied) in the mounting holes in the rack posts.
c. Align the screw holes in one slide rail with the cage nuts in the rack post on one side, and
use M6 screws (user supplied) to attach the slide rail to the rack, as shown in Figure2-13.
d. 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.

2-8
Figure2-13 Installing the slide rails
4. Mount the switch in the rack:
a. Verify that the front mounting brackets and chassis rails have been securely attached to the
switch chassis.
b. Verify that the slide rails have been correctly attached to the rear rack posts.
c. Install cage nuts (user-supplied) to the front rack posts and make sure they are at the same
level as the slide rails.
d. Supporting the bottom of the switch, align the chassis rails with the slide rails on the rack
posts, as shown in Figure2-14. Work with another person to slide the chassis rails along the
slide rails until the mounting brackets are flush with the rack posts.
e. Use M6 screws (user-supplied) to attach the mounting brackets to the rack, as shown in
Figure2-15.
To secure the switch in the rack, make sure the front ends of the slide rails reach out of the
chassis rails.

2-9
Figure2-14 Mounting the switch in the rack (1)
Figure2-15 Mounting the switch in the rack (2)

2-10
Mounting the switch on a workbench
IMPORTANT:
•
Ensure good ventilation and 10 cm (3.9 in) of clearance around the chassis for heat dissipation.
•Avoid placing heavy objects on the switch.
To mount the switch on a workbench:
1. Verify that the workbench is sturdy and reliably grounded.
2. Place the switch with bottom up, and clean the round holes in the chassis bottom with dry cloth.
3. Attach the rubber feet to the four round holes in the chassis bottom.
4. Place the switch with upside up on the workbench.
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 the switch in one of the following ways, depending on the grounding conditions
available at the installation site:
•
Grounding the switch with a grounding strip
•
Grounding the switch with a grounding conductor buried in the earth ground
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.
Connecting the grounding cable to the chassis
1. Remove the grounding screw from the rear panel of the switch chassis.
2. Use the grounding screw to attach the ring terminal of the grounding cable to the grounding
screw hole. Fasten the screw. The recommended torque is 12 kgf-cm (1.18 Nm).
IMPORTANT:
Orient the grounding cable as shown in
Figure2-16 so you can easily install or remove the
fan
tray.

2-11
Figure2-16 Connecting the grounding cable to the chassis
(1) Grounding screw
(2) Ring terminal
(3) Grounding sign
(4) Grounding hole
(5) Grounding cable
3. Verify that the grounding cable has been securely connected to the rear grounding point.
Connecting the grounding cable to a grounding strip
1. Use needle-nose pliers to bend the bare metal part to the shape as shown in Figure2-17. Make
sure the bended part can securely attached to the grounding post on the grounding strip.
2. Attach the bended part of the grounding cable to the grounding post and use the hex nut to
fasten the bended part to the post.
Figure2-17 Connecting the grounding cable to the grounding strip
(1) Grounding post
(2) Grounding strip
(3) Grounding cable
(4) Hex nut
Grounding the switch with a grounding conductor buried in
the earth ground
If the installation site has no grounding strips, but earth ground is available, hammer a 0.5 m (1.64 ft)
or longer angle iron or steel tube into the earth ground to serve as a grounding conductor.
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2-12
The dimensions of the angle iron must be a minimum of 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in). The
steel tube must be zinc-coated and its wall thickness must be a minimum of 3.5 mm (0.14 in).
Weld the yellow-green grounding cable to the angel iron or steel tube and treat the joint for corrosion
protection.
Figure2-18 Grounding the switch by burying the grounding conductor into the earth ground
(1) Grounding screw
(2) Chassis rear panel
(3) Grounding cable
(4) Earth
(5) Grounding conductor
Installing/removing a fan tray
CAUTION:
•
Install two fan trays of the same model on the switch. Do not power on the switch when it does
not have a fan tray or has only one fan tray installed.
•
Make sure slots are installed with fan trays or blank filler panels for the device to operate.
•
If both fan trays fail during operation, replace them within 2 minutes while the switch is operating.
•
If one fan tray fails, perform either of the following tasks:
If the ambient temperature is not higher than 27°C (80.6°F), replace the fan tray within 24 hours and
make sure the failed fan tray is in position before the replacement.
If the ambient temperature is higher than 27°C (80.6°F), replace the fan tray immediately.
The switch comes with empty fan tray slots. Choose the fan tray models based on the ventilation
requirement of the site. The air flow direction varies by fan tray model.
•
The LSPM1FANSA-SN has a blue handle and provides power-to-port air flow.
•
The LSPM1FANSB-SN has a red handle and provides port-to-power air flow.
For more information about the fan trays, see removable fan trays in Hardware Information and
Specifications.
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