Table of Contents

Chapter 1 Product Overview.. 1-1

1.1 Overview. 1-1

1.2 Introduction to S3100 Series Ethernet Switches. 1-2

1.2.1 S3100-26TP-EI-W.. 1-2

1.2.2 S3100-16TP-EI-W.. 1-4

1.2.3 S3100-8TP-EI-W.. 1-7

1.3 Introduction to Front Panel LEDs. 1-9

1.3.1 Power LED. 1-9

1.3.2 Auto-Sensing 10/100BASE-TX Ethernet Port Status LED. 1-10

1.3.3 1000 Mbps Uplink Port Status LED. 1-12

1.4 Technical Specifications. 1-12

1.5 SFP Modules Supported by S3100 Series Ethernet Switches. 1-14

Chapter 2 Installation Preparation. 2-1

2.1 Precautions. 2-1

2.2 Requirements on Environment 2-1

2.2.1 Temperature/Humidity Requirements. 2-2

2.2.2 Cleanness Requirements. 2-3

2.2.3 Anti-interference Requirements. 2-4

2.2.4 Laser Usage Security. 2-5

2.3 Installation Tools. 2-5

Chapter 3 Installation. 3-1

3.1 Installing a Switch. 3-1

3.1.1 Cabinet Mounting. 3-1

3.1.2 Desk Mounting. 3-9

3.1.3 Wall Mounting. 3-9

3.1.4 Magnet Mounting. 3-12

3.2 Connection of Power Cord and Grounding Cable. 3-16

3.2.1 Connecting AC Power Cord. 3-16

3.2.2 Connecting DC Power Cable. 3-17

3.2.3 Connecting Grounding Cable. 3-19

3.3 Connecting Optical Fiber 3-24

3.4 Connection of Console Cable. 3-25

3.4.1 Console Cable. 3-25

3.4.2 Connecting Console Cable. 3-26

3.5 Installation Verification. 3-27

Chapter 4 Lightning Protection of the Switch. 4-1

4.1 Installation of Lightning Arrester for AC Power (Socket Strip with Lightning Protection) 4-1

4.2 Installation of Lightning Arrester for Network Port 4-4

 

Chapter 1  Product Overview

1.1  Overview

H3C S3100 Series Ethernet Switches are high-performance, high-density, easy-to-install, NMS-manageable intelligent Ethernet switches which support wire-speed Layer 2 switching.

Table 1-1 lists the models of H3C S3100 Series Ethernet Switches.

Table 1-1 Models of H3C S3100 Series Ethernet Switches

Model	Power supply	Number of 10/100M electrical ports	1000M uplink ports	Number of console ports
S3100-26TP-EI-W	AC input or 12V-RPS DC input	24	2 Combo ports	1
S3100-16TP-EI-W	AC input	16	2 Combo ports	1
S3100-8TP-EI-W		8	1 Combo port	1

 

1.2  Introduction to S3100 Series Ethernet Switches

1.2.1  S3100-26TP-EI-W

I. Front panel

S3100-26TP-EI-W Ethernet switches each provide twenty-four auto-sensing 10/100/1000Base-TX Ethernet ports, two 10/100/1000BASE-T Ethernet ports, two 100/1000Base-X SFP ports, and one console port. Each SFP port and the corresponding 10/100/1000BASE-T Ethernet port form a Combo port. For each Combo port, either the SFP port or the corresponding 10/100/1000BASE-T Ethernet port can be used at a time.

Figure 1-1 shows the front panel of an S3100-26TP-EI-W Ethernet switch.

(1) Auto-sensing 10/100Base-TX Ethernet port status LED
(2) Link LED for Combo port	(3) Console port
(4) Power LED (PWR)	(5) RPS DC power LED
(6) A/L LED	(7) D/S LED
(8) Mode button	(9) Active LED for Combo port

Figure 1-1 Front panel of an S3100-26TP-EI-W Ethernet switch

 

 

II. Rear panel

Figure 1-2 shows the rear panel of an S3100-26TP-EI-W Ethernet switch.

(1) AC power socket	(2) RPS DC power socket
(3) Grounding screw

Figure 1-2 Rear panel of an S3100-26TP-EI-W Ethernet switch

III. Power system

S3100-26TP-EI-W Ethernet switches can adopt AC input, or RPS 12 VDC input, or both to provide backup. Only the recommended RPS can be used.

1)         AC input:

l           Rated voltage range: 100 VAC to 240 VAC, 50 Hz/60 Hz

l           Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz

2)         RPS DC input:

l           Rate voltage range: 10.8 VDC to 13.2 VDC

IV. Cooling system

S3100-26TP-EI-W Ethernet switches cool off naturally.

1.2.2  S3100-16TP-EI-W

I. Front panel

S3100-16TP-EI-W Ethernet switches each provide sixteen auto-sensing 10/100Base-TX Ethernet ports, two 10/100/1000Base-T Ethernet ports, two 100/1000Base-X SFP ports, and one console port. Each SFP port and the corresponding 10/100/1000BASE-T Ethernet port form a Combo port. For each Combo port, either the SFP port or the corresponding 10/100/1000BASE-T Ethernet port can be used at a time.

Figure 1-3 shows the front panel of an S3100-16TP-EI-W Ethernet switch.

(1) Auto-sensing 10/100Base-TX Ethernet port status LED
(2) Link LED for Combo port	(3) Console port
(4) Power LED (PWR)	(5) A/L LED
(6) D/S LED	(7) Mode button
(8) Active LED for Combo port

Figure 1-3 Front panel of an S3100-16TP-EI-W Ethernet switch

 

 

II. Rear panel

Figure 1-4 shows the rear panel of an S3100-16TP-EI-W Ethernet switch.

(1) AC power socket

(2) Grounding screw

Figure 1-4 Rear panel of an S3100-16TP-EI-W Ethernet switch

III. Side panel

Each S3100-16TP-EI-W Ethernet switch provides a security slot, through which you can lock the device together with an irremovable object to prevent theft.

The security slot is located at the rear end of the left side panel, as shown in Figure 1-5.

(1) Security slot

Figure 1-5 Security slot on left side panel of an S3100-16TP-EI-W Ethernet switch

 

 

IV. Power system

S3100-16TP-EI-W Ethernet switches:

l           Rated voltage range: 100 VAC to 240 VAC, 50/60Hz

l           Input voltage range: 90 VAC to 264 VAC, 47Hz to 63Hz

V. Cooling system

S3100-16TP-EI-W Ethernet switches cool off naturally.

1.2.3  S3100-8TP-EI-W

I. Front panel

S3100-8TP-EI-W Ethernet switches each provide eight auto-sensing 10/100Base-TX Ethernet ports, one 10/100/1000Base-T Ethernet port, one 100/1000Base-X SFP port, and one console port. The SFP port and the 10/100/1000BASE-T Ethernet port form a Combo port. Either the SFP port or the 10/100/1000BASE-T Ethernet port can be used at a time.

Figure 1-6 shows the front panel of an S3100-8TP-EI-W Ethernet switch.

(1) Auto-sensing 10/100Base-TX Ethernet port status LED
(2) Link LED for Combo port	(3) Console port
(4) Power LED (PWR)	(5) A/L LED
(6) D/S LED	(7) Mode button
(8) Active LED for Combo port

Figure 1-6 Front panel of an S3100-8TP-EI-W Ethernet switch

 

 

II. Rear panel

Figure 1-7 shows the rear panel of an S3100-8TP-EI-W Ethernet switch.

(1) AC power socket

(2) Grounding screw

Figure 1-7 Rear panel of an S3100-8TP-EI-W Ethernet switch

III. Side panel

Each S3100-8TP-EI-W Ethernet switch provides a security slot, through which you can lock the device together with an irremovable object to prevent theft.

The security slot is located at the rear end of the left side panel, as shown in Figure 1-5.

 

 

IV. Power system

S3100-8TP-EI-W Ethernet switches:

l           Rated voltage range: 100 VAC to 240 VAC, 50/60Hz

l           Input voltage range: 90 VAC to 264 VAC, 47Hz to 63Hz

V. Cooling system

S3100-8TP-EI-W Ethernet switches cool off naturally.

1.3  Introduction to Front Panel LEDs

1.3.1  Power LED

Table 1-2 Description of the power LED on S3100 series

LED	Mark on the panel	Status	Description
Power LED	PWR	ON	The switch is powered on.
		OFF	The switch is powered off.
RPS DC power LED	RPS	ON	DC input is normal.
		OFF	There is no DC input.

 

 

1.3.2  Auto-Sensing 10/100BASE-TX Ethernet Port Status LED

There are two port status LEDs on both sides (yellow LED on the left and green LED on the right) of each 10/100BASE-TX Ethernet port of S3100 series. They indicate the active, link, duplex, and speed statuses of the port.

In addition, there are an A/L LED and a D/S LED on each model of S3100 series. These two LEDs indicate the mode of the port status LEDs. When the A/L LED is on, the port status LEDs respectively indicate the active status and link status of ports. When the D/S LED is on, the port status LEDs respectively indicate the duplex status and speed status of ports. Either the A/L LED or the D/S LED is on at a specific time. For details, see Table 1-3.

Table 1-3 Description of port status LEDs on S3100 series

Port status mode LED	Port status LED		Description
The A/L LED is on	Yellow LED (left)	BLINKING	The port is in the active state and there is traffic on the port.
		OFF	The port is in the active state but there is no traffic on the port.
	Green LED (right)	ON	The port is connected properly.
		OFF	The port is not connected or is incorrectly connected.
The D/S LED is on	Yellow LED (left)	ON	The port operates in the full duplex mode.
		OFF	The port operates in the half duplex mode.
	Green LED (right)	ON	The port rate is 100 Mbps.
		OFF	The port rate is 10 Mbps.

 

You can switch the mode of the port status LEDs by pressing the Mode button. After a switch is powered on, the A/L LED is on initially. If you press the Mode button, the D/S LED will be on. After that, if you press the Mode button again within 45 seconds, the A/L LED will be on again. Otherwise, the A/L LED will automatically be on 45 seconds later.

1.3.3  1000 Mbps Uplink Port Status LED

Table 1-4 Description of 1000 Mbps uplink port status LED on S3100 series

LED	Mark on the panel	Status	Description
1000 Mbps uplink port link LED	LINK	ON	The port is connected properly.
		OFF	The port is not connected or is incorrectly connected.
1000 Mbps uplink port active LED	ACT	BLINKING	The port is in the active state and there is traffic on the port.
		OFF	The port is in the active state but there is no traffic on the port.

 

1.4  Technical Specifications

Table 1-5 Technical specifications for S3100 Series Ethernet switches

Model	S3100-26TP-EI-W	S3100-16TP-EI-W	S3100-8TP-EI-W
Physical dimensions (H x W x D)	43.6 x 440 x 260 mm (1.7 x 17.2 x 10.2 in)	43.6 x 300 x 220 mm (1.7 x 11.8 x 8.7 in)	43.6 x 230 x 200 mm (1.7 x 9.1 x 7.9 in)
Weight	<3.5 kg (7.7 lb)	<2.5 kg (5.5 lb)	<1.8 kg (4 lb)
Number of fixed ports	24 x auto-sensing 10/100BASE- TX Ethernet port 2 x 1000M Combo port	16 x auto-sensing 10/100BASE- TX Ethernet port 2 x 1000M Combo port	8 x auto-sensing 10/100BASE- TX Ethernet port 1 x 1000M Combo port
Number of management port	1 x console port
Power system	S3100-16TP-EI-W/S3100-8TP-EI-W Ethernet switches support only AC input. S3100-26TP-EI-W AC-powered switches support AC input and RPS DC input. AC input: l      Rated voltage range: 100 VAC to 240 VAC, 50 Hz /60 Hz l      Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63Hz RPS DC input: l      Input voltage range: 10.8 VDC to 13.2 VDC
PoE (as powered device)	Not supported	Not supported	Not supported
System power consumption (full load)	22 W	17 W	14 W
Fan	None	None	None
Operating temperature	0°C to 45°C (30°F to 113°F)
Relative humidity (non- condensing)	10% to 90%

 

 

1.5  SFP Modules Supported by S3100 Series Ethernet Switches

The front panel of S3100 Series Ethernet switches provides one or two 1000M SFP ports in which you can select the required small form-factor pluggable (SFP) modules to insert. For the models of SFP modules, see Table 1-6.

Table 1-6 SFP modules supported by S3100 Ethernet switches

Type		Model
SFP module	100 Mbps SFP module	l      SFP-FE-SX-MM1310-A l      SFP-FE-LX-SM1310-A
	1000 Mbps SFP module	l      SFP-GE-SX-MM850-A l      SFP-GE-LX-SM1310-A
	SFP stack module	SFP-STACK-Kit
	100 Mbps bidirectional (BIDI) module	l      SFP-FE-LX-SM1310-BIDI l      SFP-FE-LX-SM1550-BIDI
	1000 Mbps BIDI module	l      SFP-GE-LX-SM1310-BIDI l      SFP-GE-LX-SM1490-BIDI

 

 

Chapter 2  Installation Preparation

2.1  Precautions

To avoid any device impairment and body injury resulting from improper use, please take the following precautions:

l           Before cleaning the switch, disconnect the power. Do not clean the switch with wet cloth or liquid.

l           Keep the switch away from water or dampness. Prevent water or moisture from entering the switch chassis.

l           Do not place the switch on an unstable case or desk, because the switch might be damaged severely in case of a fall.

l           Keep the switch room drafty and the switch ventilation hole free of obstruction.

l           The switch can operate normally only under correct voltage input. Make sure that the operating voltage is consistent with that labeled on the switch.

l           To prevent electric shock, do not open the chassis while the switch is operating, and do not open the chassis arbitrarily even when the switch is powered off.

l           Before changing interface cards, wear an ESD-preventive wrist strap to prevent the cards from being damaged by electrostatic discharge.

2.2  Requirements on Environment

S3100 Series Ethernet Switches must be used indoors. When you install your switch in a cabinet or on a desk, you must ensure:

l           Enough space is reserved near the air-intake hole and the ventilation hole of the switch for heat dissipation of the switch chassis.

l           The cabinet or the workbench takes good ventilation and heat dissipation system.

l           The cabinet or the desk is solid enough to bear the weight of the switch and the accessories.

l           The cabinet or the desk is well grounded.

To ensure normal operation and to prolong the life span of the switch, the following requirements on the installation site must also be satisfied.

2.2.1  Temperature/Humidity Requirements

You should keep your equipment room within the proper temperature and humidity ranges to ensure the normal operation and working life of your switch. If the humidity in the equipment room is too high for a long time, it may decrease the insulation attribute of insulating material or even cause electric leakage of insulating material, and, sometimes, may change the mechanical performance of material and cause the rustiness and corrosion of metal parts. If the relative humidity is too low, the captive screws may become loose due to the shrinking of insulation washers; in addition, electrostatic is more likely to be produced in a dry environment, which may damage the circuit of the switch. High temperature may cause even greater damage to the switch. High temperature for a long time will speed up the aging of insulation material, greatly lower the reliability of the switch and greatly reduce the life span of the switch.

For the temperature and humidity requirements of different models, refer to section 1.4  “Technical Specifications”.

2.2.2  Cleanness Requirements

Dust is a potential hazard to the safe operation of the switch. Falling on the equipment, it may cause electrostatic adsorption, and hence result in poor contact of the metal connectors or connection points. This is more likely to happen when the indoor relative humidity is low; in this case, it may not only shorten the device’s working life, but also incur communication failure. The requirements on dust content and particle diameter in the equipment room are shown in the following table.

Table 2-1 Requirements on dust content in the equipment room

Physical active substance	Unit	Content
Dust particle	particle/m³	≤ 3 x 104 (No visible dust on desk in three days)
Note: Dust particle diameter ≥ 5µm

 

Besides the requirements on dust, rigorous requirements are also set on the content of chloride, acid, and sulfide in the air of the equipment room. These kinds of harmful gas will accelerate metal corrosion and aging of certain parts. The equipment room should be protected from the intrusion of harmful gases such as SO₂, H₂S, NH₃ and Cl₂. The limits of these kinds of harmful gas are shown in the following Table.

Table 2-2 Limits on harmful gas in the equipment room

Gas	Max content (mg/m³)
SO2	0.2
H2S	0.006
NH3	0.05
Cl2	0.01

 

2.2.3  Anti-interference Requirements

A switch in use may be affected by the interference from outside the system by way of capacitance coupling, inductance coupling, electromagnetic radiation, public impedance (including the grounding system) coupling or conducting line (power line, signaling line and transmission line). Therefore, you should pay attention to the following:

l           If AC supply system is TN system, AC power socket should be a single-phase three-line power socket with Protection Earth (PE) so that the filter circuit on the equipment can effectively filter out the interference coming from the power supply system.

l           Keep the switch far away from high-power radio transmitters, radars, and high-frequency heavy-current devices.

l           Adopt electromagnetic shielding measure if necessary. For example, you can adopt shielded interface cable.

l           Wire interface cables indoors. Do not wire cables outdoors in case that overvoltage and overcurrent damage the device.

2.2.4  Laser Usage Security

S3100 series are category-1 laser equipment.

When an optional optical interface card of the S3100 series is operating, it is prohibited to stare into the optical interface because the laser beam emitted from the optical fiber takes high energy and may hurt your retina.

 

 

2.3  Installation Tools

l           Phillips screwdriver

l           Flat-blade screwdriver

l           ESD-preventive wrist strap

 

 

Chapter 3  Installation

 

 

3.1  Installing a Switch

3.1.1  Cabinet Mounting

You can install a switch into a 19-inch standard cabinet in one of the following ways:

l           Use front mounting ears

l           Use front mounting ears and a tray

l           Use front mounting ears and guide rails

The installation methods of a switch depend on the depth and width of the switch. For the specific installation methods, see Table 3-1.

Table 3-1 Installation methods for a S3100 switch

Model	Use front mounting ears	Use front mounting ears and a tray	Use front mounting ears and guide rails
S3100-26TP-EI-W	√	√	√
S3100-16TP-EI-W	√	√	—
S3100-8TP-EI-W	√	√	—

 

I. Introduction to mounting ear

Figure 3-1 shows the appearance of a front mounting ear.

 

(1) Screw hole used to fix the mounting ear to the cabinet (Use one M6 screw)

(2) Screw hole used to fix the switch to the mounting ear

Figure 3-1 Appearance of a front mounting ear

When you install S3100 Series Ethernet Switches into 19-inch standard cabinets, you should select front mounting ears with a proper length (L1 as shown in Figure 3-1) according to the physical dimensions of switches. For the selection of front mounting ears, see Table 3-2.

Table 3-2 Selection of mounting ear for S3100 Series Ethernet Switches

Model	Physical dimensions (H x W x D)	Configuration type of front mounting ear
S3100-26TP-EI-W	43.6 x 440 x 260 mm (1.7 x 17.3 x 10.2 in)	Standard
S3100-16TP-EI-W	43.6 x 300 x 220 mm (1.7 x 11.8 x 8.7 in)	Optional
S3100-8 TP-EI-W	43.6 x 230 x 200 mm (1.7 x 9.1 x 7.9 in)	Optional

 

 

II. Use front mounting ears to install a switch

Follow these steps to mount a switch into a 19-inch standard cabinet:

1)         Wear an ESD-preventive wrist strap to check the grounding and stability of the cabinet.

2)         Take out the screws which are packed together with the front mounting ears, and fix one end of mounting ears to the switch, as shown in Figure 3-2.

Figure 3-2 Fix front mounting ears (1)

3)         Place the switch horizontally in a proper position, and fix the other end of mounting ears to the front brackets with screws and captive nuts, as shown in Figure 3-3.

Figure 3-3 Fix front mounting ears (2)

III. Use front mounting ears and a tray

Follow these steps to install a switch into a 19-inch standard cabinet:

1)         Wear an ESD-preventive wrist strap to check the grounding and stability of the cabinet.

2)         Fix the delivered tray horizontally in a proper position.

3)         Take out the screws which are packed together with the front mounting ears, and fix one end of mounting ears to the switch, as shown in Figure 3-2.

4)         Place the switch on the tray horizontally, slide the tray into the cabinet, and fix the other end of mounting ears to the front brackets with crews and captive nuts, as shown in Figure 3-3.

IV. Use front mounting ears and guide rails

l           Introduction to guide rail

Figure 3-4 shows the appearance of a guide rail.

 

Slotted hole 1: Used to fix the guide rail to the rear bracket. You can adjust the screw hole position according to the position of the switch.

Cooling hole: Used for heat dissipation between switch and cabinet

Slotted hole 2: Used to fix the guide rail to the front bracket

Figure 3-4 Appearance of a guide rail

 

 

l           Installation procedure

Follow these steps to install a switch into a 19-inch standard cabinet

1)         Wear an ESD-preventive wrist strap to check the grounding and stability of the cabinet.

2)         Take out the screws packed together with the front mounting ears and fix one end of the front mounting ears to the switch, as shown in Figure 3-2.

3)         Install guide rails on the brackets on both sides of the cabinet with M5 self-tapping screws. Figure 3-5 is for reference only.

Figure 3-5 Install guide rails

4)         Hold the two sides of the switch and slide it gently along the guide rails into the cabinet until it is located in a proper position, as shown in Figure 3-6. Ensure that the bottom side of the guide rails and the switch are in close contact.

Figure 3-6 Install front mounting ears and guide rails

5)         Fix the other end of front mounting ears to the front brackets of the cabinet with M6 screws and captive nuts and ensure that the front mounting ears and guide rails have fixed the switch in the cabinet securely, as shown in Figure 3-7.

Figure 3-7 Effect diagram of front mounting ear and guide rail installation

 

 

3.1.2  Desk Mounting

When a 19-inch standard cabinet is not available, you can simply place the switch on a clean desk. When doing so, you should ensure that:

l           The desk is stable and well grounded.

l           A clearance about 10 cm (3.9 in) is reserved around the switch for heat dissipation.

l           No heavy object is placed on the switch.

l           S3100-SI and S3100-TP-EI-W Series Ethernet Switches are designed with no fan. Therefore, you should install them in a drafty environment, and keep at least a vertical distance of 1.5 cm (0.6 in) between devices if you need to stack switches one upon another.

3.1.3  Wall Mounting

You can mount some models of S3100 Series Ethernet Switches on concrete walls or wood walls. Table 3-3 lists the models that support wall mounting.

Table 3-3 Models supporting wall mounting

Subseries	Models supporting wall mounting	Hole distance (mm)
S3100 Ethernet switches	S3100-8TP-EI-W	170 mm (6.69 in.)
	S3100-16TP-EI-W

 

I. Introduction to screw and anchor kit

Figure 3-8 and Figure 3-9 show the recommended sizes (in mm) of screws and anchor kits used for mounting:

Figure 3-8 Screw

(1) Outside edge of anchor kit

Figure 3-9 Anchor kit

II. Installation procedure

The wall-mounting procedure is as follows:

1)         As shown in Figure 3-10, drill two holes 5 mm across in the wall on the same horizontal line, with a distance of X=170 mm (6.69 in.).

 

 

2)         Insert anchor kits into the holes and keep only the edges outside the wall.

3)         Drive screws into the anchor kits, keeping the inside of screw head at least 1.5 mm (0.06 in) away from the edge of the anchor kit so that the switch could hang on the screws securely.

Figure 3-10 Wall mounting

4)         Align the two installation holes at the bottom of the switch with these two screws to hang the switch.

 

 

3.1.4  Magnet Mounting

The following four models support magnet mounting:

l           S3100-8TP-EI-W

l           S3100-16TP-EI-W

I. Introduction to magnetic accessories

A set of magnetic mounting accessories consists of one permanent magnets and one M3*6 countersunk head screws, as shown in Figure 3-11. Four sets of magnetic mounting accessories are needed for each S3100 switch.

(1) Permanent magnet

(2) M3*6 countersunk head screw

Figure 3-11 Magnets and countersunk head screws

II. Installation procedure

Follow these steps to complete magnet mounting:

1)         As shown in Figure 3-12, use a Phillips screwdriver to pass the countersunk head screw through the round hole at the center of the permanent magnet, fasten it to a blind nut in the dent of the switch bottom, and ensure that the permanent magnet and the switch are fastened reliably.

 

 

2)         Attach the magnet-mounted device to the specified location. Take care not to get your fingers stuck between because the magnetism is very huge.

(1) Blind nut in the dent of the switch bottom
(2) Permanent magnet	(3) M3*6 countersunk head screw

Figure 3-12 Magnet mounting

 

 

3.2  Connection of Power Cord and Grounding Cable

3.2.1  Connecting AC Power Cord

I. AC power socket (recommended)

You are recommended to use a mono-phase three-core power socket with a neutral point or a multi-function power socket for computers. The neutral point of the power in your building must be well grounded. Normally, the neutral point of the power supply system in your building has already been grounded during the construction and wiring; but you should make sure this is the fact.

 

Figure 3-13 Recommended AC power socket

II. Connecting AC power cord

1)         Connect one end of the chassis grounding cable (coming with the switch) to the grounding screw on the rear of the chassis and the other end to the ground nearby.

2)         Connect one end of the power cord to the power socket on the rear panel of the chassis and the other end to an outside AC power socket.

3)         Check whether the PWR LED on the front panel of the switch is ON. If the LED is ON, it shows the power cord is properly connected.

 

 

3.2.2  Connecting DC Power Cable

I. 12V-RPS DC power cable connection for S3100-26TP-EI-W AC-powered Ethernet switch

Pin Number	Designation	Pin Number	Designation
1	GND	8	GND
2	—	9	—
3	12V	10	RPS_pres
4	12V	11	—
5	12V	12	—
6	12V	13	Control Pin
7	GND	14	GND

Figure 3-14 12V-RPS DC power socket

1)         Connect one end of the grounding cable (delivered with the switch) to the grounding screw and the other end to the ground nearby.

2)         Connect the 12V-RPS DC power supply as follows:

l           As shown in Figure 3-15, loosen the fastening screws and remove the air filter from the 12V-RPS DC power socket. (In the case of no 12V-RPS DC power supply, re-install the air filter.)

(1) Air filter

(2) Fastening screw

Figure 3-15 12V-RPS power socket for an S3100-26TP-EI-W AC-powered Ethernet switch

l           Connect one connector (in A direction) of the 12V-RPS DC power cable (Figure 3-16 shows a recommended 12V-RPS DC power cable) to the RPS DC power socket of the switch, and the other connector (in B direction) to the corresponding 12 V power output socket of the RPS power module.

Figure 3-16 12V-RPS DC power cable

l           Connect one end of the delivered AC power cable to the power socket of the RPS power module and the other end to the socket of an external AC power supply.

3)         Check whether the PWR LED on the front panel of the switch is ON. If yes, the power is properly connected.

 

 

3.2.3  Connecting Grounding Cable

 

 

The power input end of the switch is connected with a noise filter, whose central ground is directly connected to the chassis, forming the so-called chassis ground (commonly known as PGND). This chassis ground must be securely connected to the earth so that the faradism and leakage electricity can be safely released to the earth, enhancing the EMS capability of the switch.

Ground your switch as follows:

l           When a grounding strip is available at the installation site, attach one end of the yellow-green grounding cable of the switch to the grounding screw on the grounding strip and fasten the captive nut. (Note that the fire main and lightning rod of your building are not suitable for grounding the switch. The grounding cable of the switch should be connected to the construction engineering ground of the equipment room.)

(1) Power input	(2) Grounding screw
(3) Grounding cable	(4) Grounding strip

Figure 3-17 Grounding the switch through a grounding strip

l           When there is no grounding strip but there is cement floor nearby where a grounding body is allowed to be buried, hammer an angle steel/steel pipe no shorter than 0.5 m (19.7 in.) into the earth, with the yellow-green grounding cable of the switch welded onto the angle steel/steel pipe and the jointing point being processed against erosion.

(1) Power input	(2) Grounding screw
(3) Grounding cable	(4) Earth
(5) Angle steel

Figure 3-18 Grounding the switch by burying the grounding body into the earth

l           For an AC-powered switch, if none of the above two conditions is available, ground it through the PE cable of the AC power supply. In this case, make sure this PE cable is well connected to the ground at the power distribution room or AC transformer.

(1) AC power input	(2) Grounding screw
(3) Power transformer	(4) PE cable
(5) 3-core cable for AC power input	(6) Ethernet switch

Figure 3-19 Grounding the switch through AC PE cable

l           For a DC-powered switch (–48 VDC), if none of the first two conditions is available, ground it through the return cable (RTN) of the DC power supply. In this case, make sure this RTN cable is well connected to the ground at the DC output of the DC power cabinet.

(1)AC/DC power cabinet	(2) –48V strip	(3) –48V
(4) RTN strip	(5) RTN	(6) PGND strip
(7) Grounding to the earth	(8) Grounding cable	(9) screw
(10) Ethernet switch	(11) DC power input

Figure 3-20 Grounding the switch through the PGND of the power cabinet

3.3  Connecting Optical Fiber

 

 

 

Step 1: Remove the protective cap from the optical connector of the fiber.

Step 2: Remove the protective cap from the PON interface of the ONU card.

Step 3: Plug the optical connector into the PON interface of the ONU subcard.

3.4  Connection of Console Cable

3.4.1  Console Cable

The console cable is an 8-core shielded cable. At one end of the cable is a crimped RJ45 connector to be connected to the console port of the switch; at the other end of the cable is a DB-9 (female) connector to be connected to the 9-core (pin) serial port on the console terminal. See the following figure.

Figure 3-21 Console cable

Table 3-4 Console cable connector pinouts and mapping relation

RJ-45	Signal	Direction	DB-9
1	RTS	←	7
2	DTR	←	4
3	TXD	←	3
4	CD	→	1
5	GND	—	5
6	RXD	→	2
7	DSR	→	6
8	CTS	→	8

 

3.4.2  Connecting Console Cable

Follow these steps to connect a terminal device, a PC for example, to the switch:

Step 1: Connect the DB-9 female connector of the console cable to the serial port of the PC or the terminal device used to configure the switch.

Step 2: Connect the RJ-45 connector of the console cable to the console port of the switch.

 

 

 

3.5  Installation Verification

After completing the installation, check that:

l           The correct power is used.

l           The grounding cable is connected.

l           Both console cable and power cord are properly connected.

l           All the interface cables are wired indoors. If there is any cable wired outdoors, verify that socket strip with lightning protection and lightning arresters for network ports have been properly connected.

 

Chapter 4  Lightning Protection of the Switch

4.1  Installation of Lightning Arrester for AC Power (Socket Strip with Lightning Protection)

 

 

If an outdoor AC power cord should be directly led to the switch, please serially connect the lightning arrester for AC power (Socket Strip with Lightning Protection) before you plug AC power cord into the switch, thus to prevent the possible damage to the switch due to lightning strike. You can use cable clips and screws to fasten the lightning arrester for AC power on the cabinet, workbench or the wall of equipment room.

Figure 4-1 Diagram of lightning arrester

 

 

4.2  Installation of Lightning Arrester for Network Port

 

 

 

If an outdoor network cable should be led to the switch, please serially connect the lightning arrester for network port before you plug this cable into the interface on the switch, in case of the possibility that the switch may be damaged due to lightning strike.

I. Required tools

l           Phillips screwdriver or Flat-blade screwdriver

l           Multimeter

l           Tilted cable cutter

II. Installation procedure

Step 1: Tear the protection paper at one side of the double faced adhesive tape apart from the tape, and stick the tape on the surface of the arrester. Tear the protection paper at another side apart from the tape, and stick the arrester onto the chassis of the switch. The arrester should be attached on the chassis as close to the grounding screw as possible.

Step 2: According to the distance to the grounding screw of the switch, cut the ground cable of the arrester, and securely tightening its ground cable to the grounding screw of the switch.

Step 3: Use the multimeter to measure whether the ground cable of the arrester contacts well with the grounding screw of chassis.

Step 4: According to the instruction of arrester for network port, connect the arrester with switch by the cables (be carefully with the cable direction. Outdoor network cable should be inserted into the arrester‘s IN end, and the cable connected to the switch should be inserted into the arrester’s OUT end). When you do that, observe whether the arrester indicators normally display.

 

 

Step 5: Use the nylon ties to bundle the cables neatly.

Figure 4-2 Installation diagram of lightning arrester for network port

III. Installation precautions

Fully consider the following items in the installation process, otherwise, the performance of the lightning arrester for network port will be affected:

l           Lightning arrester for network port is installed in reverse direction. In practice, the “IN” end should be connected to the outdoor network cable and the “OUT” end to the network port on the switch.

l           Lightning arrester for the network port is not well grounded. The ground cable for the arrester should be as short as possible, so to ensure its good contact with the grounding screw of the switch. After the connection, use the multimeter to confirm that.

l           The lightning arrester for the network port is not installed completely. If the switch has more than one network ports to interconnect with other devices via cables outdoor, you should install lightning arresters for all these network ports for protection.