Switch model	Product code (PID)
S3100V3-10TP-EI	LS-3100V3-10TP-EI LS-3100V3-10TP-EI-GL LS-3100V3-10TP-EI-H1
S3100V3-18TP-EI	LS-3100V3-18TP-EI LS-3100V3-18TP-EI-GL LS-3100V3-18TP-EI-H1
S3100V3-18TP-EI-DC	LS-S3100V3-18TP-EI-DC
S3100V3-28TP-EI	LS-3100V3-28TP-EI LS-3100V3-28TP-EI-GL LS-3100V3-28TP-EI-H1 LS-3100V3-28TP-EI-T
S3100V3-28TP-EI-DC	LS-S3100V3-28TP-EI-DC
S3100V3-52TP-EI	LS-3100V3-52TP-EI LS-3100V3-52TP-EI-GL LS-3100V3-52TP-EI-H1
S3100V3-10TP-PWR-EI	LS-3100V3-10TP-PWR-EI LS-3100V3-10TP-PWR-EI-GL LS-3100V3-10TP-PWR-EI-H1
S3100V3-20TP-PWR-EI	LS-3100V3-20TP-PWR-EI LS-3100V3-20TP-PWR-EI-GL LS-3100V3-20TP-PWR-EI-H1
S3100V3-20TP-PWR-EI-DC	LS-S3100V3-20TP-PWR-EI-DC
S3100V3-28TP-PWR-EI	LS-3100V3-28TP-PWR-EI LS-3100V3-28TP-PWR-EI-GL
S3100V3-28TP-PWR-EI-AC	LS-3100V3-28TP-PWR-EI-AC

NOTE:

Switches of the same model but different PIDs might differ in hardware and software features. You can view the PID of a switch on the label located on its rear panel or top panel.

Safety recommendations

To avoid 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, 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.

· Ensure good ventilation at the installation site 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 power source voltage is as required.

· To avoid electrical shocks, do not open the chassis while the switch is operating or when the switch is just powered off.

· To avoid ESD damage, always wear an ESD wrist strap during installation.

Examining the installation environment

To ensure correct operation of your switch, make sure the installation environment meets the requirements listed in Table1-2.

Table1-2 Checking list for the installation environment

Item	Requirements
Ventilation and heat dissipation	CAUTION: To ensure correct operation of your device, make sure the installation environment is adequately ventilated to prevent the switch from overheating. · Ensure a minimum clearance of 10 cm (3.94 in) around the chassis. · Do not install the device near a heat source, for example, a stove or heater. · Ensure air ventilation in the installation environment. · Do not block the ventilation holes in the device or power adapter.
Anti-moisture	CAUTION: Water or moisture might damage the circuits of the device. · Do not place the device near water or in a damp environment. · Install the switch in a clean, dry, and ventilated place where temperature is controlled in a stable range. · Make sure the installation environment is free from water leakage or condensation. If required, install a dehumidification device (such as an air conditioner with a dehumidification function or a dedicated dehumidifier). · Do not operate the device under or near the water source, such as the wash basin, laundry room, or areas with high humidity. · Do not touch the device with wet hands.
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. · 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 S3100V3-EI Switch Series Hardware Information and Specifications.
Lightning protection	CAUTION: Ground the switch correctly and verify the grounding. For more information, see "Grounding the switch." · If you ground the switch by using a grounding strip, make sure the grounding resistance of the grounding strip in the equipment room is less than 1W. · If you ground the switch by using a grounding conductor buried in the earth ground, make sure the grounding resistance of the grounding conductor in the ground is less than 10W. · Route the signal cables along indoor walls, bury the cables in the earth ground, or thread the cables through steel tubes. Install a signal lightning arrester with a nominal discharge current for a corresponding network interface. · Keep the signal cables far from power cords and lightning rod down conductors. · As a best practice, route power cords indoors. If an AC power cord is routed from outdoors, connect the AC power cord first to a power lightning arrester before leading it to the AC power port on the switch. Make sure the power lightning arrester has a nominal discharge current and the total length of the power cord from the power lighting arrester to the power port on the switch is less than 5 m (16.40 ft). · Ground the switch, rack, independent power supplies, and lightning arresters separately. · You must ground optical fibers with reinforcing metal stiffener from outdoors on an optical distribution frame (ODF) or fiber splice enclosure.
Cable routing	CAUTION: Do not run an Ethernet cable and power cord in parallel. · Route different types of cables separately. · Keep power cords a minimum of 5 cm (1.97 in) away from other cables.
ESD prevention	· Ground the switch correctly. · To avoid ESD damage to the device or components, always wear an ESD wrist strap when you install or remove the device or components. · Make sure the wrist strap has good skin contact and is reliably grounded.
Cleanliness	· For more information, see "Cleanliness."
Corrosive gas prevention	The installation site must be free from corrosive gases such as acid gases and alkaline gases. For more information, see "Corrosive gas limit."
EMI	· If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to filter interference from the power grid. · Keep the device far away from radio transmitting stations, radar stations, and high-frequency devices. · Use electromagnetic shielding, for example, shielded interface cables, when necessary.

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. Table1-3 describes the switch requirement for cleanliness.

Table1-3 Switch requirement for cleanliness

Substance	Particle diameter	Concentration limit
Dust particles	≥ 0.5 µm	≤ 1.8 × 107 particles/m3

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 do not exceed the concentration limits as shown in Table1-4.

Table1-4 Corrosive gas concentration limits

Gas	Average concentration (mg/m3)	Maximum concentration (mg/m3)
SO2	0.3	1.0
H2S	0.1	0.5
Cl2	0.1	0.3
HCI	0.1	0.5
HF	0.01	0.03
NH3	1.0	3.0
O3	0.05	0.1
NOX	0.5	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.

Examining the installation site

Before you install the switch, verify that the installation site meets the installation requirements. The switch can operate correctly in an A1 or A2 installation site. Availability issues might occur if you install the switch in an A3, B1, B2, or C installation site.

Table1-5 Installation sites

Category	Definition	Example
A1: indoor controlled environment	· Indoor environments where temperature and humidity are controlled. · Completely enclosed or shielded indoor environments.	Central equipment rooms, IDC equipment rooms, mobile cabins with air conditioners, outdoor air conditioner cabinets, and heat exchanger cabinets.
A2: indoor partially controlled environment	· Indoor environments where temperature and humidity are partially controlled. · Incompletely enclosed or shielded places. · Places far from pollution sources.	Simple equipment rooms, ordinary houses, garages, corridors, and direct ventilation cabinets far from pollution sources, houses without direct exposure to sunlight or rain, railway station platforms, and stadiums.
A3: indoor uncontrolled environment	· Indoor environments where temperature and humidity are uncontrolled. · Incompletely enclosed or shielded places. · Places near pollution sources.	Simple equipment rooms, ordinary houses, garages, corridors, and direct ventilation cabinets near pollution sources, houses without direct exposure to sunlight or rain, railway station platforms, stadiums, uncleaned rooms after decoration, and rooms under decoration.
B1: outdoor general environment	· Unshielded places where the temperature and humidity are not controlled. · Places far from pollution sources.	Completely exposed outdoor places far from pollution sources.
B2: harsh environment	· Unshielded places where the temperature and humidity are not controlled. · Sea environments or outdoor land environments near pollution sources.	Islands, ships, and completely exposed outdoor places near pollution sources.
C: special environments	Special application environments	Buried, underwater, or undersea environments and manholes.

Table1-6 Pollution sources

Category	Radius range
Saline water areas such as oceans and saline lakes	≤ 3.7 km (2.30 miles)
Serious pollution sources such as metallurgic plants, coal mines, and heat and power plants	≤ 3 km (1.86 miles)
Medium pollution sources such as chemical factories, rubber plants, and electroplating factories	≤ 2 km (1.24 miles)
Light pollution sources, such as food factories, tanneries, and heating boilers	≤ 1 km (0.62 miles)

Checking power distribution or power supply environment

Table1-7 Requirements for power distribution or power supply environment

Item	Requirements
Preparation	The power supply must be available before you install the switch.
Voltage	The voltage provided to the switch must be within the operating voltage range. For the operating voltage range, see S5130S-EI Switch Series Hardware Information and Specifications.
Power receptacle and cables	· If the external power supply system provides an AC power outlet, use a country-specific AC power cord. Make sure the PE wire of the AC power supply is grounded reliably. · If the external power supply system provides a DC distribution box, prepare DC power cords yourself. · Do not use the power cord provided with the switch on other devices.

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 S3100V3-EI switches are Class 1 laser devices.

Installation tools

No installation tools are provided with the switch. Prepare the installation tools yourself as required.

· Flat-blade screwdriver

· Phillips screwdriver

· ESD wrist strap

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

Mounting brackets

Table2-2 describes mounting brackets applicable to the switch.

Table2-2 Mounting brackets applicable to the switch

Switch model	Mounting brackets	Views
S3100V3-28TP-EI S3100V3-28TP-EI-DC S3100V3-52TP-EI S3100V3-28TP-PWR-EI S3100V3-28TP-PWR-EI-AC	Mounting brackets A (provided)	See A in Figure2-2.
S3100V3-10TP-PWR-EI S3100V3-20TP-PWR-EI S3100V3-20TP-PWR-EI-DC	Mounting brackets B with product code SOHO-SWITCH-FL-02 (optional)	See B in Figure2-2.
S3100V3-10TP-EI S3100V3-18TP-EI S3100V3-18TP-EI-DC	Mounting brackets C with product code SOHO-SWITCH-FL-01 (optional)	See C in Figure2-2.

Figure2-2 Mounting brackets

(1) Screw hole for attaching the bracket to the switch
(2 ) Screw hole for attaching the bracket to the rack post

Attaching the mounting brackets to the switch

1. Align one mounting bracket with the screw holes at the mounting position. Use M4 screws to attach the mounting bracket to the chassis. See Figure2-3 for installing mounting bracket A, Figure2-4 for installing mounting bracket B, and Figure2-5 for installing mounting bracket C.

M4 screws are provided only for switches shipped with mounting brackets. For switches not shipped with mounting brackets, you can order an optional mounting bracket kit, which contains M4 screws.

2. Repeat step 1 to attach the other mounting bracket to the chassis.

Figure2-3 Attaching mounting bracket A (S3100V3-28TP-PWR-EI switch)

Figure2-4 Attaching mounting bracket B (S3100V3-10TP-PWR-EI switch)

Figure2-5 Attaching mounting bracket C (S3100V3-10TP-EI switch)

Rack-mounting the switch

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 have been securely attached to the switch chassis.

3. Install cage nuts in the mounting holes in the rack posts.

4. One person holds the switch chassis and aligns the mounting brackets with the mounting holes in the rack posts, and the other person attaches the mounting brackets to the rack with M6 screws.

M6 screws are provided only for switches shipped with mounting brackets. For switches not shipped with mounting brackets, prepare M6 screws yourself.

5. Verify that the switch chassis is horizontal and secure.

Figure2-6 Mounting an S3100V3-28TP-PWR-EI switch in the rack

Figure2-7 Mounting an S3100V3-10TP-PWR-EI switch in the rack

Figure2-8 Mounting an S3100V3-10TP-EI switch in the rack

Mounting the switch on a workbench

IMPORTANT:

· Ensure 10 cm (3.9 in) of clearance around the chassis for heat dissipation.

· Do not place heavy objects on the switch.

If a standard 19-inch rack is not available, you can place you switch on a workbench.

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.

Mounting the switch on a wall

CAUTION:

· Before drilling holes in a wall, make sure no electrical lines exist in the wall.

· Leave a minimum clearance of 10 mm (0.39 in) around the chassis for heat dissipation.

Table2-3 describes the switch models that support wall mounting and installation holes distances required for wall-mounting the switch. Screw anchors and screws as shown in Figure2-9 are provided with these switches for wall-mounting.

Table2-3 Installation hole distances for switch models that support wall mounting

Switch model	Hole distance
S3100V3-10TP-EI	170 mm (6.69 in)
S3100V3-18TP-EI S3100V3-18TP-EI-DC	172 mm (6.77 in)
S3100V3-10TP-PWR-EI	102 mm (4.02 in)
S3100V3-20TP-PWR-EI S3100V3-20TP-PWR-EI-DC	116 mm (4.57 in)

Figure2-9 Screw anchor and screw

To mount the switch on a wall:

1. Mark two installation holes on the wall. Make sure the two holes are on the same horizontal line.

See Table2-2 for the distance requirement between the two holes.

Figure2-10 Installing the switch on a wall (1)

2. Drill two holes with a diameter of 6 mm (0.24 in) and a depth of 25 mm (0.98 in) at the marked locations. Hammer the screw anchors into the wall and use a Phillips screwdriver to fasten the screw into the screw anchor. Leave 1.5 mm (0.06 in) between the screw head and the wall for hanging the switch.

Figure2-11 Installing the switch on a wall (2)

3. Align the installation holes in the switch rear with the screws on the wall and hang the switch on the screws. Make sure the port side faces down and the left and right sides are perpendicular to the ground.

Figure2-12 Installing the switch on a wall (3)

Grounding the switch

WARNING!

Correctly connecting the switch grounding cable is crucial to lightning protection, ESD, and EMI protection. For information about lightning protection, see H3C Network Devices Lightning Protection Guide.

To protect against the following types of problems, use a grounding cable to connect the device to the earthing facility at the installation site:

· Bodily injury from electric shocks.

· Device and power and data line damages.

· Electrical fires, lightning strokes, electromagnetic coupling interferences, ESD damages.

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 chassis views and power module and grounding terminal positions in the following figures 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.

The grounding screw and grounding hole (with a grounding sign) are located at the rear panel of the switch.

To ground the switch by using a grounding strip:

1. Attach the ring terminal end of the grounding cable to the grounding hole in the switch.

a. Remove the grounding screw from the grounding hole in the rear panel of the switch.

b. Attach the grounding screw to the ring terminal of the grounding cable.

c. Use a screwdriver to fasten the grounding screw into the grounding hole.

Figure2-13 Attaching the grounding cable to the grounding hole of the switch (S3100V3-28TP-PWR-EI switch)

(1) Grounding screw	(2) Ring terminal
(3) Grounding sign	(4) Grounding hole
(5) Grounding cable

2. Connect the other end of the grounding cable to the grounding strip.

a. Cut the grounding cable to a length according to the distance between the switch and the grounding strip.

b. Peel 20 mm (0.79 in) of insulation sheath by using a wire stripper.

c. Use the needle-nose pliers to bend the bare wire.

d. Hook the grounding cable to the post on the grounding strip, and use the hex nut to secure the cable to the post.

Figure2-14 Connecting the grounding cable to a 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 does not have grounding strips, but earth ground is available, hammer a 2.5 m (8.20 ft) or longer angle iron or steel tube into the earth ground to act as a grounding conductor. Make sure a minimum of 0.7 m (2.30 ft) is left between the top of the grounding conductor and the ground. In cold areas, bury the grounding conductor below the frozen soil layer. In areas with thin soil or rocky gravel, determine the depth for burying the grounding conductor based on the actual condition.

If zinc-coated steel is used, the following dimensions requirements must be met:

· Angle iron—A minimum of 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in).

· Steel tube—A minimum of 3.5 mm (0.14 in) in thickness.

· Flat steel—A minimum of 40 × 4 mm (1.57 × 0.16 in).

· Round steel—A minimum of 10 mm (0.39 in).

Weld the yellow-green grounding cable to the angel iron or steel tube and treat the joint for corrosion protection.

Figure2-15 Grounding the switch by burying the grounding conductor into the earth ground

(1) Grounding screw	(2) Grounding cable	(3) Earth
(4) Joint	(5) Grounding conductor	(6) Chassis rear panel

Verifying the connection after grounding the switch

· If you ground the switch with a grounding strip:

a. Use a multimeter to measure the resistance between the switch grounding terminal and grounding point, and make sure the resistance is less than 0.1W.

b. Use a grounding resistance tester to measure the grounding resistance of the grounding strip, and make sure the grounding resistance is less than 1W.

· If you ground the switch with a grounding conductor buried in the earth ground:

a. Use a multimeter to measure the resistance between the switch grounding terminal and grounding point, and make sure the resistance is less than 0.1W.

b. Use a grounding resistance tester to measure the grounding resistance of the angle iron in the ground, and make sure the grounding resistance is less than 10W. For locations with high soil resistivity, sprinkle some resistance reducer to reduce soil resistivity or replace soil around the grounding strip with soil with lower resistance.

For information about resistance measurement, see H3C Network Devices Lightning Protection Guide.

Connecting the power cord

CAUTION:

· Provide a circuit breaker for each power cord.

· Before connecting the power cord, make sure the circuit breaker on the power cord is turned off.

Table2-4 Power cord connection procedures at a glance

Switch model	Available power source	Connection procedure reference
S3100V3-10TP-EI S3100V3-18TP-EI S3100V3-28TP-EI S3100V3-52TP-EI S3100V3-10TP-PWR-EI S3100V3-20TP-PWR-EI S3100V3-28TP-PWR-EI-AC	AC power source	Connecting the switch to an AC power source
S3100V3-28TP-PWR-EI	AC power source	Connecting the switch to an AC power source
S3100V3-28TP-PWR-EI	H3C RPS1600-A	Connecting the switch to an RPS
S3100V3-18TP-EI-DC S3100V3-28TP-EI-DC	–48 VDC power source in the equipment room or H3C RPS1600-A	Connecting the switch to an external DC power supply system
S3100V3-20TP-PWR-EI-DC	DC power supply system that provides voltage within the input voltage range of the switch or H3C RPS1600-A	Connecting the switch to an external DC power supply system

Connecting the switch to an AC power source

1. Connect the female connector of the AC power cord to the AC-input power receptacle on the switch. See Figure2-16.

2. Use a cable tie to secure the power cord to the handle near the AC power receptacle. See Figure2-17.

3. Connect the other end of the power cord to an AC power source.

Figure2-16 Connecting the AC power cord (1)

Figure2-17 Connecting the AC power cord (2)

Connecting the switch to an RPS

CAUTION:

To connect the switch to an RPS, you must use a power cord compatible with the RPS.

As a best practice, use an H3C RPS1600-A for the switch.

To connect the switch to an RPS:

1. Correctly orient the DC power cord connector, and align and insert the connector into the DC-input power receptacle on the switch. See callout 1 in Figure2-18.

If you cannot insert the connector into the receptacle, re-orient the connector rather than use excessive force to push it in.

2. Use a flat-blade screwdriver to fasten the screws on the connector to secure the connector to the power receptacle. See callout 2 in Figure2-18.

3. Connect the other end of the power cord to an RPS.

Figure2-18 Connecting the switch to an RPS (S3100V3-28TP-PWR-EI)

Connecting the switch to an external DC power supply system

CAUTION:

· To connect switch to an external power supply system, identify the positive (+) and negative (-) marks above the DC-input power receptacle to ensure correct connections.

· No DC power cord is provided with the switch. As a best practice, use a cable with a current carrying capacity over 6A for an S3100V3-20TP-PWR-EI-DC switch and a cable with a current carrying capacity over 1A for an S3100V3-18TP-EI-DC or S3100V3-28TP-EI-DC switch.

· The power cord wiring color codes vary by country and region. The wire colors in the figure are for illustration only.

To connect the switch to an external DC power supply system:

1. Insert the DC power wires into the terminal block.

2. Use a flat-blade screwdriver to fasten the screws on the terminal block plug to secure the DC power wires to the terminal block plug.

3. Correctly orient the terminal block, and align and insert the terminal block into the DC-input power receptacle on the switch. See callout 1 in Figure2-19.

If you cannot insert the terminal block into the receptacle, re-orient the terminal block rather than use excessive force to push it in.

4. Use a flat-blade screwdriver to fasten the screws on the terminal block to secure the terminal block to the power receptacle. See callout 2 in Figure2-19.

5. Connect the other end of the power cord to an external DC power supply system.

Figure2-19 Connecting the switch to an external DC power supply system (S3100V3-28TP-PWR-EI switch)

Verifying the installation

After you complete the installation, verify that:

· There is enough space for heat dissipation around the switch, and the rack or workbench is stable.

· The grounding cable is securely connected.

· The correct power source is used.

· The power cords are correctly connected.

· All the interface cables are cabled indoors. If any cable is routed outdoors, verify that the socket strip with lightning protection and lightning arresters for network ports have been correctly connected.

3 Accessing the switch for the first time

Connecting the switch to a configuration terminal

You can connect the switch to a configuration terminal by using the serial console port.

In Figure3-1, the switch is connected to a configuration terminal (PC as an example) from the serial console port.

Figure3-1 Connecting the switch to a configuration terminal

As shown in Table3-1, two types of console cables can be used for connecting the switch to a configuration terminal. No serial console cable is provided with the switch.

Table3-1 Connection methods and console cables

Connection method	Console cable type	Configuration terminal-side connector	Switch-side connector
Using the serial console port for connection	DB9-to-RJ45 console cable	DB-9 female connector	RJ-45 connector
Using the serial console port for connection	USB-to-RJ45 console cable	USB connector	RJ-45 connector

The signal pinout for the RJ-45 connector of a serial console cable varies by vendor. To avoid abnormal configuration terminal display, use a serial console cable provided by H3C. For more information, see Table3-2. To prepare a serial console cable yourself, make sure the signal pinout for the RJ-45 connector is the same as that shown in Table3-3.

Table3-2 Console cable views

Console cable type	Console cable view	Product code for the recommended H3C console cable
DB9-to-RJ45 console cable		04042967
USB-to-RJ45 console cable		0404A1EE

Connecting a DB9-to-RJ45 console cable

CAUTION:

Follow these guidelines when you connect a DB9-to-RJ45 console cable:

· Identify the mark on the serial console port and make sure you are connecting to the correct port.

· The serial ports on PCs do not support hot swapping. To connect a PC to an operating switch, first connect the PC end. To disconnect a PC from an operating switch, first disconnect the switch end.

A DB9-to-RJ45 serial console cable is an 8-core shielded cable, with a crimped RJ-45 connector at one end for connecting to the serial console port of the switch, and a DB-9 female connector at the other end for connecting to the serial port on a configuration terminal.

Figure3-2 DB9-to-RJ45 console cable

Table3-3 DB9-to-RJ45 console cable signal pinout

RJ-45	Signal	DB-9	Signal
1	RTS	8	CTS
2	DTR	6	DSR
3	TXD	2	RXD
4	SG	5	SG
5	SG	5	SG
6	RXD	3	TXD
7	DSR	4	DTR
8	CTS	7	RTS

To connect the switch to a configuration terminal (for example, a PC) by using a DB9-to-RJ45 console cable:

1. Plug the DB-9 female connector of the DB9-to-RJ45 console cable to the serial port on the PC.

2. Connect the RJ-45 connector to the serial console port on the switch.

Connecting a USB-to-RJ45 console cable

IMPORTANT:

· To use a USB-to-RJ45 console cable to connect the switch to a configuration terminal, first download and install the USB-to-RJ45 console driver on the configuration terminal and then connect the USB-to-RJ45 console cable to the configuration terminal.

· If you have connected a USB-to-RJ45 console cable to the configuration terminal before by using driver, remove and reconnect the USB-to-RJ45 console cable to the configuration terminal after driver installation.

For information about the signal pinout for the RJ-45 connector of a USB-to-RJ45 console cable, see Table3-3.

The following installs the driver on the Windows system. To install the driver on other operating systems, see the installation guide in the driver compression package named by using the corresponding operating system.

To connect the switch to a configuration terminal by using a USB-to-RJ45 console cable:

1. Click the following link, or copy it to the address bar on your browser and download the USB-to-RJ45 console driver.

http://www.h3c.com/en/home/USB_to_RJ45_Console/

2. View the TXT file Read me in the Windows folder to check whether the Windows system of the configuration terminal supports the driver.

3. If the Windows system supports the driver, install PL23XX-M_LogoDriver_Setup_v200_20190815.exe.

4. Click Next on the welcome page of the driver installation wizard.

Figure3-3 Driver installation wizard

5. Click Finish after the drive installation is completed.

Figure3-4 Finishing the driver installation

6. Connect the standard USB connector of the cable to the USB port of the configuration terminal.

7. Connect the RJ-45 connector of the cable to the console port of the switch.

Setting terminal parameters

To configure and manage the switch through the console port, you must run a terminal emulator program, such as TeraTermPro, on your configuration terminal. You can use the emulator program to connect a network device, a Telnet site, or an SSH site. For more information about the terminal emulator programs, see the user guides for these programs.

Configure the terminal parameters as follows:

· Bits per second—9,600.

· Data bits—8.

· Parity—None.

· Stop bits—1.

· Flow control—None.

Powering on the switch

1. Before powering on the switch, verify that the following conditions are met:

¡ The power cord is correctly connected.

¡ The input power voltage meets the requirement of the switch.

¡ The console cable is correctly connected.

¡ The configuration terminal (a PC, for example) has started, and its serial port settings are consistent with the console port settings on the switch.

2. Power on the switch.

During the startup process, you can access Boot ROM menus to perform tasks such as software upgrade and file management. The Boot ROM interface and menu options differ with software versions. For more information about Boot ROM menu options, see the software-matching release notes for the device.

3. After the switch starts up, you can access the CLI to configure the switch.

For more information about the configuration commands, see the configuration guides and command references for the switch series.

4 Setting up an IRF fabric

You can use H3C IRF technology to connect and virtualize S3100V3-EI switches into a large virtual switch called an "IRF fabric" for flattened network topology, and high availability, scalability, and manageability.

IRF fabric setup flowchart

Figure4-1 IRF fabric setup flowchart

To set up an IRF fabric:

Step	Description
1. Plan IRF fabric setup.	Plan the installation site and IRF fabric setup parameters: · Planning IRF fabric size and the installation site · Identifying the master switch and planning IRF member IDs · Planning IRF topology and connections · Identifying IRF physical ports on the member switches · Planning the cabling scheme
2. Install IRF member switches.	See "Installing the switch in a 19-inch rack" or "Mounting the switch on a workbench."
3. Connect grounding cables and power cords.	See "Grounding the switch" and "Connecting the power cord."
4. Power on the switches.	N/A
5. Configure basic IRF settings.	See the IRF configuration guide or virtual technologies configuration guide for the switch series, depending on the software version.
6. Connect the IRF physical ports.	Connect IRF physical ports on switches. All switches except the master switch automatically reboot, and the IRF fabric is established.

Planning IRF fabric setup

This section describes issues that an IRF fabric setup plan must cover.

Planning IRF fabric size and the installation site

Choose switch models and identify the number of required IRF member switches, depending on the user density and upstream bandwidth requirements. The switching capacity of an IRF fabric equals the total switching capacities of all member switches.

Plan the installation site depending on your network solution, as follows:

· Place all IRF member switches in one rack for centralized high-density access.

· Distribute the IRF member switches in different racks to implement the ToR access solution for a data center.

Identifying the master switch and planning IRF member IDs

Determine which switch you want to use as the master for managing all member switches in the IRF fabric. An IRF fabric has only one master switch. You configure and manage all member switches in the IRF fabric at the CLI of the master switch. IRF member switches automatically elect a master. You can affect the election result by assigning a high member priority to the intended master switch. For more information about master election, see the IRF configuration guide or virtual technologies configuration guide for the switch series, depending on the software version.

Prepare an IRF member ID assignment scheme. An IRF fabric uses member IDs to uniquely identify and manage its members, and you must assign each IRF member switch a unique member ID.

Planning IRF topology and connections

You can create an IRF fabric in daisy chain topology or more reliable ring topology. In ring topology, the failure of one IRF link does not cause the IRF fabric to split as in daisy chain topology. Instead, the IRF fabric changes to a daisy chain topology without interrupting network services.

You connect the IRF member switches through IRF ports, the logical interfaces for the connections between IRF member switches. Each IRF member switch has two IRF ports: IRF-port 1 and IRF-port 2. To use an IRF port, you must bind at least one physical port to it.

When connecting two neighboring IRF member switches, you must connect the physical ports of IRF-port 1 on one switch to the physical ports of IRF-port 2 on the other switch.

The S3100V3-EI switches can provide GE IRF connections through 10/100/1000BASE-T autosensing Ethernet ports and GE SFP ports.

You can bind multiple 10/100/1000BASE-T autosensing Ethernet ports or GE SFP ports to an IRF port for increased bandwidth and availability.

NOTE:

The following figures use the SFP ports on the S3100V3-28TP-PWR-EI switch as an example. For the ports that can be used for IRF connections, see Table4-1.

Figure4-2 IRF fabric in daisy chain topology

Figure4-3 IRF fabric in ring topology

Identifying IRF physical ports on the member switches

Identify the IRF physical ports on the member switches according to your topology and connection scheme.

Table4-1 shows the physical ports that can be used for IRF connection and the port use restrictions.

Table4-1 IRF physical ports and use restrictions

Chassis	Candidate IRF physical ports	Use restrictions
S3100V3-10TP-EI S3100V3-18TP-EI S3100V3-18TP-EI-DC S3100V3-28TP-EI S3100V3-28TP-EI-DC S3100V3-10TP-PWR-EI S3100V3-20TP-PWR-EI S3100V3-20TP-PWR-EI-DC S3100V3-28TP-PWR-EI S3100V3-28TP-PWR-EI-AC S3100V3-52TP-EI	All the 10/100/1000BASE-T autosensing Ethernet ports and SFP ports on the front panel	Only GE IRF connections are supported. For a 52-port switch model, the 20 GE ports are divided into the following groups: · Ports 51 to 52 in one group. · Ports 33 to 50 in another group. To bind multiple GE ports to an IRF port, make sure the ports are in the same group. GE ports in one group can be bound to different IRF ports.

Chassis

Candidate IRF physical ports

Use restrictions

S3100V3-10TP-EI

S3100V3-18TP-EI

S3100V3-18TP-EI-DC

S3100V3-28TP-EI

S3100V3-28TP-EI-DC

S3100V3-10TP-PWR-EI

S3100V3-20TP-PWR-EI

S3100V3-20TP-PWR-EI-DC

S3100V3-28TP-PWR-EI

S3100V3-28TP-PWR-EI-AC

S3100V3-52TP-EI

All the 10/100/1000BASE-T autosensing Ethernet ports and SFP ports on the front panel

Only GE IRF connections are supported.

For a 52-port switch model, the 20 GE ports are divided into the following groups:

· Ports 51 to 52 in one group.

· Ports 33 to 50 in another group.

To bind multiple GE ports to an IRF port, make sure the ports are in the same group. GE ports in one group can be bound to different IRF ports.

Planning the cabling scheme

Use the following cables to connect the IRF physical ports on the switches:

· 10/100/1000BASE-T autosensing Ethernet port—Category 5 or above twisted-pair cable.

· SFP port—GE SFP fiber transceiver module and optical fiber, GE SFP copper transceiver module and twisted pair cable or GE SFP cable. For the available transceiver models and cables, see ports in Hardware Information and Specifications.

If the IRF member switches are far away from one another, use SFP transceiver modules and optical fibers. If the IRF member switches are all in one equipment room, use twisted pair cables or SFP cables.

As a best practice, use ring topology to connect the switches. The following describes cabling schemes in ring topology.

Connecting the IRF member switches in one rack

Use SFP cables to connect the IRF member switches in a rack as shown in Figure4-4. The switches in the ring topology (see Figure4-5) are in the same order as connected in the rack.

Figure4-4 Connecting the switches in one rack

Figure4-5 IRF fabric topology

Connecting the IRF member switches in a ToR solution

You can install IRF member switches in different racks side by side to deploy a top of rack (ToR) solution.

Figure4-6 shows an example for connecting four top of rack IRF member switches by using SFP transceiver modules and optical fibers. The topology is the same as Figure4-5.

Figure4-6 ToR cabling

Configuring basic IRF settings

After you install the IRF member switches, power on the switches, and log in to each IRF member switch (see the fundamentals configuration guide for the switch series) to configure their member IDs, member priorities, and IRF port bindings.

Follow these guidelines when you configure the switches:

· Assign the master switch higher member priority than any other switch.

· Bind physical ports to IRF port 1 on one switch and to IRF port 2 on the other switch. You perform IRF port binding before or after connecting IRF physical ports depending on the software release.

· Execute the display irf configuration command to verify the basic IRF settings.

For more information about configuring basic IRF settings, see the IRF configuration guide or virtual technologies configuration guide for the switch series, depending on the software version.

Connecting the IRF physical ports

Use twisted pair cables, SFP cables, or SFP transceiver modules and fibers to connect the IRF member switches as planned.

Wear an ESD wrist strap when you connect twisted pair cables, SFP cables, or SFP transceiver modules and fibers. For how to connect them, see H3C Transceiver Modules and Network Cables Installation Guide.

Verifying the IRF fabric setup

To verify the basic functionality of the IRF fabric after you finish configuring basic IRF settings and connecting IRF ports:

1. Log in to the IRF fabric through the console port of any member switch.

2. Create a Layer 3 interface, assign it an IP address, and make sure the IRF fabric and the remote network management station can reach each other.

3. Use Telnet or SNMP to access the IRF fabric from the network management station. (See the fundamentals configuration guide for the switch series.)

4. Verify that you can manage all member switches as if they were one node.

5. Display the running status of the IRF fabric by using the commands in Table4-2.

Table4-2 Displaying and maintaining IRF configuration and running status

Task	Command
Display information about the IRF fabric.	display irf
Display all members’ IRF configurations that take effect at a reboot.	display irf configuration
Display IRF fabric topology information.	display irf topology

NOTE:

To avoid IP address collision and network issues, configure a minimum of one multi-active detection (MAD) mechanism to detect the presence of multiple identical IRF fabrics and handle collisions. For more information about MAD detection, see the IRF configuration guide or virtual technologies configuration guide for the switch series, depending on the software version.

5 Maintenance and troubleshooting

Power module failure

The S3100V3-EI switches use fixed power modules. The S3100V3-28TP-PWR-EI supports AC power input, DC power input, and concurrent AC and DC power inputs. The S3100V3-18TP-EI-DC, S3100V3-28TP-EI-DC, and S3100V3-20TP-PWR-EI-DC switches support only DC power input. The other switch models support only AC power input.

To identify a power failure on a switch with fixed power modules, examine the system status LED and the RPS status LED on the switch.

Table5-1 Description for the power failure indication LEDs

LED	Mark	Status	Description
System status LED	SYS	Off	The switch is powered off.
RPS status LED (available only on an S3100V3-28TP-PWR-EI switch)	RPS	Steady green	The AC input is normal, and the RPS is in position or working normally.
		Steady yellow	RPS power input is normal, but AC input has failed or AC input is not connected.
		Off	No RPS is connected.

AC input failure

Symptom

The system status LED is off.

Solution

To resolve the issue:

1. Verify that the AC power cord is securely connected to the switch, and the AC-input power receptacle on the switch and the connected AC power outlet are in good condition.

2. Verify that the AC power source is operating correctly.

3. Verify that the operating temperature of the switch is in the acceptable range, and the power module has good ventilation. Over-temperature can cause the power module to stop working and enter the protection state.

4. If the issue persists, contact H3C Support.

DC input failure

Symptom

The system status LED or RPS status LED is off

Solution

To resolve the issue:

1. Verify that the switch is securely connected to the DC power source.

2. Verify that the DC power source is operating correctly.

4. If the issue persists, contact H3C Support.

Concurrent DC and AC inputs failure

Symptom 1

The system status LED is off.

Solution

To resolve the issue:

1. Verify that the AC power cord is securely connected to the switch, and the AC-input power receptacle on the switch and the connected AC power outlet are in good condition.

2. Verify that the AC power source is operating correctly.

3. Verify that the switch is securely connected to the DC power source.

4. Verify that the DC power source is operating correctly.

5. Verify that the operating temperature of the switch is in the acceptable range, and the power module has good ventilation. Over-temperature can cause the power module to stop working and enter the protection state.

6. If the issue persists, contact H3C Support.

Symptom 2

The system status LED is on but the RPS status LED is steady yellow.

Solution

To resolve the issue:

1. Verify that the AC power cord is securely connected to the switch, and the AC-input power receptacle on the switch and the connected AC power outlet are in good condition.

2. Verify that the AC power source is operating correctly.

3. If the issue persists, contact H3C Support.

Symptom 3

The system status LED is on but the RPS status LED is off.

Solution

To resolve the issue:

1. Verify that the switch is securely connected to the DC power source.

2. Verify that the DC power source is operating correctly.

3. If the issue persists, contact H3C Support.

Symptom

The configuration terminal does not have display when the switch is powered on.

Solution

To resolve the issue:

1. Verify that the power system is operating correctly.

2. Verify that the switch is operating correctly.

3. Verify that the console cable has been connected correctly.

4. Verify that the following settings are configured for the terminal:

¡ Baud rate—9600.

¡ Data bits—8.

¡ Parity—None.

¡ Stop bits—1.

¡ Flow control—None.

5. Verify that the console cable is not faulty.

6. If the issue persists, contact H3C Support.

Garbled display on the configuration terminal

Symptom

The configuration terminal displays garbled text.

Solution

To resolve the issue:

1. Verify that the following settings are configured for the terminal:

¡ Baud rate—9600.

¡ Data bits—8.

¡ Parity—None.

¡ Stop bits—1.

¡ Flow control—None.

2. If the issue persists, contact H3C Support.

H3C S3100V3-EI Switch Series Installation Guide-6W107

1 Preparing for installation

Safety recommendations

Examining the installation environment

Attaching the mounting brackets to the switch

Grounding the switch

Grounding the switch with a grounding conductor buried in the earth ground

Connecting the power cord

Connecting the switch to an AC power source

Setting terminal parameters

Powering on the switch

IRF fabric setup flowchart

Planning IRF fabric setup

Connecting the IRF member switches in one rack

Connecting the IRF member switches in a ToR solution

Symptom

Solution

Symptom

Solution

Symptom 1

Solution

Symptom 2

Solution

Symptom 3

Solution

Symptom

Solution

Garbled display on the configuration terminal

Symptom

Solution

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