H3C S6825-54HF User manual

i
Contents
1 Preparing for installation··········································································1-1
Safety recommendations ································································································································1-1
Examining the installation site·························································································································1-1
Temperature/humidity·····························································································································1-1
Cleanliness··············································································································································1-2
EMI··························································································································································1-2
Laser safety·············································································································································1-3
Installation tools ··············································································································································1-3
Installation accessories···································································································································1-3
2 Installing the switch··················································································2-5
Installing the switch in a 19-inch rack··············································································································2-6
Accessories for switch rack-mounting·····································································································2-6
Rack-mounting procedure at a glance····································································································2-7
Chassis dimensions and rack requirements ···························································································2-7
Attaching the mounting brackets, chassis rails, and grounding cable to the chassis······························2-8
Connecting the grounding cable to the chassis ····················································································2-11
Attaching the slide rails to the rack ·······································································································2-12
Mounting the switch in the rack·············································································································2-13
Grounding the switch by using a grounding strip··························································································2-15
Installing and removing a fan tray·················································································································2-16
Installing a fan tray································································································································2-16
Removing a fan tray······························································································································2-17
Installing and removing a power supply········································································································2-17
Precautions···········································································································································2-17
Installing a power supply·······················································································································2-18
Removing a power supply·····················································································································2-19
Connecting the power cord···························································································································2-21
Connecting the power cord for a PSR450-12A/PSR450-12A1 power supply·······································2-21
Connecting the power cord for a PSR450-12AHD power supply··························································2-22
Connecting the DC power cord for a PSR450-12D power supply ························································2-23
Verifying the installation································································································································2-23
3 Accessing the switch for the first time····················································3-24
Setting up the configuration environment ·····································································································3-24
Connecting the serial console cable ·····································································································3-24
Connecting a mini USB console cable··································································································3-25
Setting terminal parameters··················································································································3-27
Starting the switch·········································································································································3-27
4 Setting up an IRF fabric·········································································4-29
IRF fabric setup flowchart ·····························································································································4-29
Planning IRF fabric setup······························································································································4-30
Planning IRF fabric size and the installation site···················································································4-30
Identifying the master switch and planning IRF member IDs································································4-30
Planning IRF topology and connections································································································4-31
Identifying physical IRF ports on the member switches········································································4-32
Planning the cabling scheme················································································································4-32
Configuring basic IRF settings······················································································································4-34
Connecting the physical IRF ports················································································································4-34
Accessing the IRF fabric to verify the configuration······················································································4-34
5 Maintenance and troubleshooting··························································5-35
Power supply failure······································································································································5-35
Symptom···············································································································································5-35
Solution·················································································································································5-35
Fan tray failure··············································································································································5-35

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Symptom···············································································································································5-35
Solution·················································································································································5-35
Configuration terminal display issues············································································································5-35
No display on the configuration terminal·······························································································5-35
Garbled display on the configuration terminal·······················································································5-36

1-1
1 Preparing for installation
This document is applicable to the H3C S6825-54HF switch (BOM code: 0235A2LJ, product code:
LS-6825-54HF).
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 FRUs, including power supplies 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 flowingout 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.

1-2
•
Lasting low relative humidity can cause washer contraction and ESD and cause problems
including loose 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 the hardware
information and specifications for the switch.
Cleanliness
Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of
metal components and contact points. In the worst case, electrostatic adsorption can cause
communication failure.
Table1-1 Dust concentration limit in the equipment room
Substance Particle diameter Concentration limit
Dust particles ≥ 0.5 µm ≤ 3.5 x 106particles/m3
Dust particles ≥5 µm ≤ 3 x 104particles/m3
Dust (suspension) ≤75 µm ≤0.2 mg/m3
Dust (sedimentation) 75 µm to 150 µm ≤1.5 mg/(m2h)
Corrosive gases can accelerate corrosion and aging of components. Make sure the corrosive gases
in the equipment room do not exceed the concentration limits as shown in Table1-2.
Table1-2 Corrosive gas concentration limits in the equipment room
Gas Average concentration
(mg/m3) Maximum concentration (mg/m3)
SO20.3 1.0
H2S 0.1 0.5
Cl20.1 0.3
HCI 0.1 0.5
HF 0.01 0.03
NH31.0 3.0
O30.05 0.1
NOX0.5 1.0
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the switch and application
system, adversely affect the switch in the following ways:
•
A conduction pattern of capacitance coupling.
•
Inductance coupling.
•
Electromagnetic wave radiation.
•
Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:

1-3
•
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.
The switch is a Class 1M laser device.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself:
•
Phillips screwdriver.
•
Flathead screwdriver.
•
ESD wrist strap.
•
Marker.
Installation accessories
Before installation, make sure you have all the required installation accessories. If any accessory is
damaged or missing, use the part No. provided in this table to purchase a new one.
Table1-3 Installation accessories
Part No. Description Quantity
0223A19T
Mounting brackets
1 kit (provided)
2150A050
1U rack mounting rail kit A (long slide rails)
1 kit (provided)
2150A0CP
1U rack mounting rail kit B (super-short slide rails)
Optional
N/A M6 screw and cage nut User supplied

1-4
Part No. Description Quantity
0404A0KM
Grounding cable
1 (provided)
N/A Grounding screw 2 (provided)
2114A09C
Power supply filler panel
1 (provided)
N/A Releasable cable tie User supplied
04042967
Serial console cable
1 (provided)
14990101
SFP port dust plug
Same number as
the SFP28 ports
1499A01G
QSFP port dust plug
Same number as
the QSFP28 ports

2-5
2 Installing the switch
CAUTION:
Keep the tamper
-
proof seal on a mounting screw on the chassis cover intact, and if you want to open
the chassis, contact
H3C for permission. Otherwise, H3C shall not be liable for any consequence
caused thereby.
CAUTION:
When installing the switch, always wear an ESD wrist strap and
make sure the wrist strap makes
good skin contact and is reliably grounded.
Figure2-1 Installation flow
Start
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
Yes
No
End
Install fan trays
Install power supplies

2-6
Installing the switch in a 19-inch rack
Accessories for switch rack-mounting
Table2-2 Accessories for switch rack-mounting
Mounting brackets Rack mounting rail kit
1U high, one pair
(provided). See Figure2-2.
•1U rack mounting rail kitA, including one pair of chassis rails and one
pair of long slide rails (provided). See Figure2-3.
•1U rack mounting rail kit B, including one pair of chassis rails and one
pair of super-short slide rails (optional). See Figure2-4.
Figure2-2 Mounting brackets
Figure2-3 1U rack mounting rail kit A (long slide rails)
(1) Chassis rail
(2) Long slide rail
Figure2-4 1U rack mounting rail kit B (super-short slide rails)
(1) Chassis rail
(2) Super-short slide rail
12
12

2-7
Rack-mounting procedure at a glance
Figure2-5 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.
Chassis dimensions and rack requirements
Figure2-6 Chassis dimensions with the mounting brackets installed at the port side
(1) Power supply handle
(2) Mounting bracket
Figure2-7 Chassis dimensions with the mounting brackets installed at the power supply side
(1) Power supply handle
(2) Mounting bracket
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 Table2-3.
•
To secure the switch to the rack, you must install not only mounting brackets, but also chassis
rails and slide rails.
Select an installation
position for the mounting
brackets (near the power
supply side or port side)
Attach the
mounting
brackets to the
switch
Attach the
chassis rails to
the switch
Connect the
grounding cable to a
grounding point
Attach the slide
rails to the rack Mount the switch
in the rack

2-8
Table2-3 Distance requirements between the front and rear rack posts
Installation method Distance between the front and rear rack posts
Using mounting brackets and rack
mounting rail kit A (long slide rails) 621 mm to 793 mm (24.45 in to 31.22 in)
Using mounting brackets and rack
mounting rail kit B (super-short slide rails,
narrow-spacing installation) 330 mm to 505 mm (12.99 in to 19.88 in)
Using mounting brackets and rack
mounting rail kit B (super-short slide rails,
wide-spacing installation) 438 mm to 632 mm (17.24 in to 24.88 in)
Table2-4 Chassis dimensions and rack depth requirements
Chassis dimensions Rack depth requirement
•Height—44 mm (1.73 in) (1 RU)
•Width—440 mm (17.32 in).
•Total depth—425 mm (16.73 in)
25 mm (0.98 in) for the power
supply or fan tray handle
400 mm (15.75 in) for the
chassis.
To ensure that the rack door can be closed easilyafter cables are
connected,make sure the rack meets the following requirements:
•A minimum of 800 mm (31.50 in) in depth (recommended)
•A minimum of 130 mm (5.12 in) from the front rack post to
the front door
•A minimum of 449 mm (17.68 in) from the front rack post to
the rear door
Attaching the mounting brackets, chassis rails, and
grounding cable to the chassis
The switch has two mounting bracket installation positions on its two side panels: one near the
network port side and one near the power supply side.
The switch provides a primary grounding point (with a grounding sign) and an auxiliary grounding
point.

2-9
Figure2-8 Mounting bracket installation positions and grounding point positions
(1) Mounting bracket installation position near the power supply side
(2) Primary grounding point
(3) Auxiliary grounding point
(4) Mounting bracket installation position near the port side
Attaching the mounting brackets and chassis rails to the chassis
IMPORTANT:
M4 screws are used to secure the mounting brackets and chassis rails to the switch.
As a best
practice, use a torque of 12 kgf-cm (1.18 Nm) to fasten M4 screws.
To attach the mounting brackets and chassis rails to the chassis:
1. Place the wide flange of a mounting bracket against a side panel of the chassis and align the
round holes in the wide flange of the front mounting bracket with the screw holes in the side
panel. Then use M4 screws (provided) to attach the mounting bracket to the chassis.
To install the mounting brackets at the port side, see Figure2-9, Figure2-10, and Figure2-11.
To install the mounting brackets at the power supply side, see Figure2-12,Figure2-13, and
Figure2-14.
2. Determine the chassis rail installation position based on the mounting bracket installation
position.
3. Place the chassis rail against the side panel of the chassis and align the installation holes in the
chassis rail with rail mounting holes in the chassis. Then use M4 screws (provided) to attach the
chassis rail to the chassis.
For installation of chassis rails of rack mounting rail kit A(long slide rails), see Figure2-9 and
Figure2-12.
The chassis rails of rack mounting rail kit B (super-short slide rails) support narrow-spacing
installation and wide-spacing installation. Select narrow-spacing (as shown in Figure2-10
and Figure2-13) or wide-spacing (as shown in Figure2-11 and Figure2-14) installation
based on the distance between the front and rear rack posts.
4. Follow the same procedure to attach another mounting bracket and chassis rail to the opposite
side.

2-10
Figure2-9 Attaching the mounting brackets and chassis rails to the chassis (mounting
brackets installed near the port side, rack mounting rail kit A)
Figure2-10 Attaching the mounting brackets and chassis rails to the chassis (mounting
brackets installed near the port side, rack mounting rail kit B, narrow-spacing installation)
Figure2-11 Attaching the mounting brackets and chassis rails to the chassis (mounting
brackets installed near the port side, rack mounting rail kit B, wide-spacing installation)

2-11
Figure2-12 Attaching the mounting brackets and chassis rails to the chassis (mounting
brackets installed near the power supply side, rack mounting rail kit A)
Figure2-13 Attaching the mounting brackets and chassis rails to the chassis (mounting
brackets installed near the power supply side, rack mounting rail kit B, narrow-spacing
installation)
Figure2-14 Attaching the mounting brackets and chassis rails to the chassis (mounting
brackets installed near the power supply side, rack mounting rail kit B, wide-spacing
installation)
Connecting the grounding cable to the chassis
IMPORTANT:
The primary and auxiliary grounding point
s are located on the left side panel of the
chassis. The two
grounding points might be not reachable after the switch is mounted in the rack. Connect the

2-12
grounding cable to a grounding point before you mount the switch in the rack.
Select the primary or auxiliary grounding point as required. The procedure is the same for connecting
the grounding cable to the primary and auxiliary grounding points. The following procedure connects
the grounding cable to the primary grounding point (near the power supply side).
To connect the grounding cable to a grounding point:
1. Unpack the grounding cable and grounding screws (applicable to both the primary and auxiliary
grounding points).
2. Use the grounding screws to attach the two-hole grounding lug to the grounding point and then
fasten the screws, as shown in Figure2-15.
As a best practice, use a torque of 20 kgf-cm (1.96 Nm) to fasten the grounding screws.
Figure2-15 Attaching the grounding cable to the primary grounding point
Attaching the slide rails to the rack
IMPORTANT:
M
6 screws and cage nuts are used to attach the slide rails to the rack. P
repare M6 screws and cage
nuts yourself. As a best practice, use a torque of 30 kgf-cm (2.94 Nm) to fasten the M6 screws.
Before mounting the switch in the rack, you must attach slide rails to the rack.
The installation procedure is the same for different types of slide rails. The following procedure
attaches 1U long slide rails to the rack.
To attach the slide rails to the rack:
1. Identify the slide rail installation position on the rack based on the switch installation position.
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 a rear rack post, and then use M6
screws (user-supplied) to attach the slide rail to the rack, as shown in Figure2-16.
4. Attach the other slide rail to the rear rack post on the opposite side.
Make sure the two slide rails are at the same height and can slide into the chassis rails
smoothly.

2-13
Figure2-16 Installing the 1U long slide rails
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 reliably 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. Attach cage nuts (user-supplied) to the front rack posts and make sure they are at the same
level as the slide rails.
5. One person performs the following operations:
a. Supporting the bottom of the switch, aligns the chassis rails with the slide rails on the rack
posts.
b. Pushes the switch slowly for the slide rails to slide into the chassis rails smoothly until the
mounting brackets are flush against the front rack posts.
−For long slide rails of rack mounting rail kit A and slide rails of rack mounting rail kit C,
make sure the front ends of the slide rails reach out of the chassis rails.
−For super-short slide rails of rack mounting rail kit B, make sure the slide rails slide a
minimum length of 90 mm (3.54 in) into the chassis rails.
6. The other person uses screws (user-supplied, rust-proofed) to attach the mounting brackets to
the rack.

2-14
Figure2-17 Mounting the switch in the rack (mounting brackets installed near the power
supply side)
Figure2-18 Mounting the switch in the rack (mounting brackets installed near the port side)

2-15
Grounding the switch by using a grounding strip
CAUTION:
•
Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.
•
Do not connect the grounding cable to a fire main or lightning rod.
•
To guarantee the grounding effect and avoid switch damage, use the grounding cable provided
with the switch to connect the switch to a grounding strip in the equipment room.
•For information about lightning protection for the switch, see H3C Lightning Protection Guide.
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.
To ground the switch by using a grounding strip:
1. Attach the two-hole grounding lug at one end of the grounding cable to a grounding point on the
switch chassis. For more information, see "Connecting the grounding cable to the chassis."
2. Remove the hex nut of a grounding post on the grounding strip.
3. Attach the ring terminal at the other end of the grounding cable to the grounding post on the
grounding strip, and secure the ring terminal to the grounding post with the hex nut.
Figure2-19 Connecting the grounding cable to a grounding strip
(1) Hex nut
(2) Ring terminal
(3) Grounding post
(4) Grounding strip
1 2 34

2-16
Installing and removing a fan tray
CAUTION:
•
For adequate heat dissipation, you must install five fan trays of the same model for the switch.
•
Make sure all slots have a module installed when the switch is operating.
•
If more than one fan tray fails during switch operation, do not remove the failed fan trays
simultaneously. Replace the fan trays one by one and finish replacing each
fan tray within three
minutes.
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 fan trays for the switch as needed. For the fan trays available for the switch and their
specifications, see the hardware information and specifications for the switch.
The installation procedure is the same for fan trays of all models.
To install a fan tray:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Unpack the fan tray and verify that the fan tray model is correct.
3. Orient the fan tray with the "TOP" mark facing upward. 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 is fully seated in the slot and has a firm contact with the backplane.
Figure2-20 Installing a fan tray (LSPM1FANSA)

2-17
Removing a fan tray
WARNING
!
•
Ensure electricity safety and never touch the rotating fans when you hot-swap a fan tray.
•
To prevent an unbalanced fan from causing loud noise, do not touch the fans, even if they are not
rotating.
•
Do not touch any bare wires and terminals on a fan tray.
•
Do not place a fan tray in a moist location or let liquid flow into it.
•
Contact H3C Support if the circuits or components on a fan tray are faulty. Do not remove any
fan
tray components.
The removal procedure is the same for fan trays of all models.
To remove a fan tray:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Press the fan tray handles towards each other to release the fan tray and slowly pull the fan tray
out of the slot along the guide rails.
3. Place the removed fan tray in an antistatic bag.
Figure2-21 Removing a fan tray (LSPM1FANSA)
Installing and removing a power supply
The switch comes with power supply slot PWR1 empty and power supply slot PWR2 installed with a
filler panel. As a best practice, install two power supplies of the same model for the switch.
Select power supplies for the switch as required. For the power supplies available for the switch and
their specifications, see the hardware information and specifications for the switch.
Precautions
•
Provide a separate circuit breaker for each power supply.
•
Do not install power supplies of different model on the same switch.
•
To avoid device damage and body injury, strictly follow procedures in Figure2-22 and
Figure2-23 to install and remove a power supply, respectively.
Figure2-22 Installation procedure
Install the power
supply Connect the power cord Turn on the circuit breaker

2-18
Figure2-23 Removal procedure
•
If a power supply slot is empty, install a filler panel in it to ensure adequate heat dissipation.
Installing a power supply
The installation procedure is the same for different models of power supplies. The following
procedure installs a PSR450-12A power supply.
To install a power supply:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Unpack the power supply and verify that the power supply model is correct.
3. Correctly orient the power supply with the lettering on it upward. Grasp the handle of the power
supply with one hand and support its bottom with the other, and slide the power supply slowly
along the guide rails into the slot. Make sure the power supply has good contact with the
backplane.
To prevent connector damages, insert the power supply gently. The power supply and power
supply slot have disorientation rejection designs. If you encounter a hard resistance while
inserting the power supply, pull out the power supply and insert it again.
Figure2-24 Installing a power supply
IMPORTANT:
If the target power supply slot has a filler panel installed, first remove the filler panel from the slot (as
shown Figure2-25).
Figure2-25 Removing the filler panel from a power supply slot
Turn off the circuit
breaker Disconnect the power
cord Remove the power
supply