TP-Link JetStream T2700G-28TQ User manual

Installation Guide
Stackable L2+ Managed Switch
T2700G-28TQ
Business Networking Solution
Stackable L3 Managed Switch
T3700G-28TQ

I
COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. is a registered trademark of TP-LINK
TECHNOLOGIES CO., LTD. Other brands and product names are trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make any derivative such
as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES CO., LTD. Copyright
© 2015 TP-LINK TECHNOLOGIES CO., LTD. All rights reserved.
http://www.tp-link.com
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
CE Mark Warning
This is a class A product. In a domestic environment, this product may cause radio interference, in which case the
user may be required to take adequate measures.
Copyright & Trademarks

II
Related Document
Related Document
The User Guide and CLI Reference Guide of the product are provided on the resource
CD.
To obtain the latest product information, please visit the Official Website:
http://www.tp-link.com
About this Installation Guide
This Installation Guide describes the hardware characteristics, installation methods and
the points that should be attended to during installation.
This Installation Guide is structured as follows:
Chapter 1 Introduction. This chapter describes the External Components of the
switch.
Chapter 2 Preparing For Installation. This chapter illustrates the safety precautions
before installing the switch.
Chapter 3 Installation. This chapter illustrates how to install the switch.
Chapter 4 Lightning Protection. This chapter illustrates how to prevent lightning
damage.
Chapter 5 Connection. This chapter illustrates how to do the physical connection of
the switch.
Chapter 6 Configuration. This chapter instructs you to configure the switch via Web
Interface and CLI commands.
Appendix A Troubleshooting.
Appendix B Hardware Specifications.

III Audience
Audience
This Installation Guide is for:
Network Engineer
Network Administrator
Conventions
Due to the similarity in structure of TP-LINK Jetstream Stackable Managed Switch
Series, in this Installation Guide we take T3700G-28TQ as an example to illustrate
Chapter 2 Preparing for Installation, Chapter 3 Installation, Chapter 4 Lightening
Protection and Chapter 5 Connection.
This guide uses the specific formats to highlight special messages. The following table
lists the notice icons that are used throughout this guide.
Remind to be careful. A caution indicates a potential which may
result in device damage.
Remind to take notice. The note contains the helpful
information for a better use of the product.

IV
Contents
Contents
Chapter 1 Introduction ———————————— 01
1.1 Product Overview.........................................01
1.2 Appearance .................................................01
Chapter 2 Preparing For Installation —————— 05
2.1 Package Contents.........................................05
2.2 Safety Precautions........................................05
2.3 Installation Tools ..........................................07
2.4 Installation & Connection Flow ......................07
Chapter 3 Installation ————————————— 09
3.1 Installing the Switch on a Desktop ....................09
3.2
Installing the Switch Into a 19-inch Rack ...........09
3.3
Installing & Removing the Power Supply Module ...10
3.4
Installing & Removing the Interface Card ........11
3.5
Stacking Using Interface Card on Rear Panel ....12
Chapter 4 Lightning Protection ———————— 14
4.1 Cabling Reasonably ......................................14
4.2 Connect to Ground .......................................16
4.3 Equipotential Bonding...................................17
4.4 Use Lightning Arrester ..................................18
Chapter 5 Connection ————————————— 19
5.1 Ethernet Port ...............................................19
5.2 SFP/SFP+ Port .............................................19
5.3 Console Port ................................................19
5.4 Verify Installation .........................................20
5.5 Power on via Power Supply Module .............20
5.6 Power on via Redundant Power Supply .........21
5.7 Initialization.................................................22
Chapter 6 Conguration———————————— 23
6.1 Congure the Switch via GUI ........................23
6.2 Congure the Switch Using CLI .....................24
Appendix A Troubleshooting —————————— 29
Appendix B Hardware Specications —————— 30

01
Stackable L2+/L3 Managed Switch
Chapter 1 Introduction
1.1 Product Overview
T2700G-28TQ/T3700G-28TQ is TP-LINK’s JetStream Stackable L2+/L3 Managed
Switch, supporting up to 4 SFP+ slots. T2700G-28TQ/T3700G-28TQ is ideal for
large businesses, campuses or SMB networks requiring an outstanding, reliable and
affordable 10 Gigabit solution.
T2700G-28TQ/T3700G-28TQ supports stacking of up to 8 units, thus providing flexible
scalability and protective redundancy for your networks. Moreover, aiming to better
protect your network, T2700G-28TQ/T3700G-28TQ’s main power is removable. With the
help of TP-LINK’s RPS, administrators can easily change its main power if it encounters
some problems without shutting down the switch, thus enabling your network to really
enjoy the benefit of uninterrupted operation.
Supporting advanced features such as OSPF, VRRP, IGMP and PIM DM/SM, T3700G-
28TQ can fully implement resilient scalable networks, and T2700G-28TQ can be
upgraded with the addition of a layer 3 license to provide these layer 3 routing features
as well.
Note:
Obtain the T2700G-28TQ Layer 3 License T2700G-28TQ-L1000 via the following steps：
1. Buy a license key from a TP-LINK authorized distributor.
2. Go to T2700G-28TQ page on TP-LINK website, use the license key together with the
switch S/N and the MAC address for authentication to download the license T2700G-
28TQ-L1000.
1.2 Appearance
■Front Panel
The front panel of T3700G-28TQ is shown as the following figure.
Console Port
LEDs
SFP Port
10/100/1000Mbps RJ45 Port
SFP+ Port
Unit ID LED
Figure 1-1 Front Panel of T3700G-28TQ
Console Port
Designed to connect with the serial port of a computer or terminal for monitoring
and configuring the switch.
Introduction

02
Stackable L2+/L3 Managed Switch
LEDs
LED Status Indication
Power
On The switch is powered on
Off The switch is powered off or power supply is abnormal
Flashing Power supply is abnormal
System Flashing The switch works properly
On/Off The switch works improperly
RPS
On
Green Both the Power Supply Module and the redundant
power supply work properly
Yellow
The Power Supply Module works improperly, but the
redundant power supply works properly
Off The switch is not connected to any redundant power
supply
FAN Green All the fans work properly
Yellow Not all the fans work properly
Master On The switch works as master in the stack system, or
does not join any stack system
Off The switch works as slave in the stack system
Module
On(green) An Interface Card is connected to the switch and works
properly
Flashing(yellow) An Interface Card is connected to the switch, but
works improperly
Off No Interface Card is connected to the switch
Link/Act
(Port 1-24)
Green On A 1000Mbps device is connected to the corresponding
port, but no activity
Flashing Data is being transmitted or received
Yellow On
A 10/100Mbps device is connected to the corresponding
port, but no activity
Flashing Data is being transmitted or received
Off No device is connected to the corresponding port
21F-24F
On An SFP transceiver is connected to the corresponding
port, and it is connected to a device, but no activity
Flashing A 1000Mbps device is connected to the corresponding
port and transmitting data
Off
An SFP transceiver is connected to the corresponding
port, but it is not connected to a device, or no SFP
transceiver is connected
25, 26
On
An SFP+ transceiver/cable is connected to the
corresponding port, and it is connected to a 10Gbps
device, but no activity
Flashing A 10Gbps device is connected to the corresponding
port and transmitting data
Off
An SFP+ transceiver/cable is connected to the
corresponding port, but it is not connected to a device,
or no SFP+ transceiver/cable is connected
Introduction

03
Stackable L2+/L3 Managed Switch
LED Status Indication
M1,M2
On
An SFP+ transceiver/cable is connected to the
corresponding port of the Interface Card, and it is
connected to a 10Gbps device, but no activity
Flashing A 10Gbps device is connected to the corresponding
port of the Interface Card
and transmitting data
Off
1. No Interface Card is connected
2. No SFP+ transceiver/cable is connected to the
installed Interface Card
3. An SFP+ transceiver/cable is connected to the
corresponding port of the Interface Card, but it is
not connected to a device
Port Feature
Model 10/100/1000Mbps
RJ45 Port
Console
Port
1000Mbps
SFP Port
10Gbps SFP+
Port
T2700G-28TQ 24 14 (Combo) 4 (2 fixed + 2
optional)
T3700G-28TQ 24 14 (Combo) 4 (2 fixed + 2
optional)
10/100/1000Mbps Port
Port 1-24, designed to connect to the device with a bandwidth of 10Mbps, 100Mbps
or 1000Mbps. Each has a corresponding Link/Act LED.
SFP Port
Port 21F-24F, designed to install the SFP transceiver. These four SFP transceiver slots
are shared with the associated RJ45 ports. The associated two ports are referred as
a “Combo”port, which means they cannot be used simultaneously, otherwise only
RJ45 port works. The SFP ports support 1000M SFP module connection only.
SFP+ Port
Port 25-26, designed to install the 10Gbps SFP+ transceiver or SFP+ cables.
T3700G-28TQ also provides an interface card slot on the rear panel to install the
expansion card (TX432 of TP-LINK for example). If TX432 is installed, you get
another two 10Gbps SFP+ ports.
Unit ID LED
Designed to display the stack Unit ID of the switch. For the switch that does
not join any stack system, it displays its default Unit ID. To modify the default
unit number, please logon to the GUI of the switch and go to Stack→Stack
Management→Switch Renumber page.
Introduction

04
Stackable L2+/L3 Managed Switch
Introduction
■Rear Panel
The rear panel of T3700G-28TQ is shown as the following figure.
Power
PS OK
Fault
PSM150-AC
100-240V~ 50/60Hz 2.5A
Grounding Terminal
RPS Input Connector
Interface Card Slot
Power Supply Module
Figure 1-2 Rear Panel of T3700G-28TQ (1)
Note: The Interface Card Slot and RPS Input Connector are shipped with protective
covers.
Interface Card Slot
Designed to extend the interfaces. You can select a TP-LINK Interface Card (TX432
for example) for your switch if needed. For how to install an Interface Card, please
refer to 3.4 Installing & Removing the Interface Card.
Grounding Terminal
The switch already comes with lightning protection mechanism. You can also ground
the switch through the PE (Protecting Earth) cable of AC cord or with Ground Cable.
For detailed information, please refer to Chapter 4 Lightning Protection.
RPS Input Connector
Designed to connect the RPS (Redundant Power Supply). You can selected an RPS of
TP-LINK (RPS150 for example) for your switch if needed. For how to install an RPS,
please refer to 5.6 Power on via Redundant Power Supply.
Power Supply Module
The AC Power Supply Module PSM150-AC is installled in the switch. The
malfunctioned PSM150-AC can be replaced with a TP-LINK power supply module of
the same model. Its input voltage is 100-240V~ 50/60Hz.
The AC Power Supply Module is fully hot swappable, helping to ensure no system
interruption during installation or replacement. For how to install/remove the Power
Supply Module, please refer to 3.3 Installing & Removing the Power Supply
Module.
Caution: Please use the provided power cord.
With all the protective covers removed and the Interface Card (TX432 for example)
inserted, the rear panel of T3700G-28TQ is shown as the following figure.
M1
SFP+
M2
SFP+
CLASS 1 LASER PRODUCT
TX432
Module
Power
PS OK
Fault
PSM150-AC
100-240V~ 50/60Hz 2.5A
Figure 1-3 Rear Panel of T3700G-28TQ (2)

05
Stackable L2+/L3 Managed Switch
Chapter 2 Preparing For Installation
2.1 Package Contents
Make sure that the package contains the following items. If any of the listed items is
damaged or missing, please contact your distributor.
One Power Supply Module
Slot Cover
One Resource CD
One Switch (One PSM150-AC
included)
One Power Cord and one
Console Cable
This Installation Guide
Two mounting brackets and
the ttings
2.2 Safety Precautions
To avoid any device damage and bodily injury caused by improper use, please observe
the following rules.
■Safety Precautions
■Keep the power off during the installation.
■Wear an ESD-preventive wrist strap, and make sure that the wrist strap has a good
skin contact and is well grounded.
■Use only the power cord provided with the switch.
■Make sure that the supply voltage matches the specifications indicated on the rear
panel of the switch.
■Ensure the vent hole is well ventilated and unblocked.
■Do not open or remove the cover of the switch.
■Before cleaning the device, cut off the power supply. Do not clean it by the waterish
cloth, and never use any other liquid cleaning method.
■Site Requirements
To ensure normal operation and long service life of the device, please install it in an
environment that meets the requirements described in the following subsection.
Temperature/Humidity
ȭ
ȭ
Preparing For Installation

06
Stackable L2+/L3 Managed Switch
Please keep a proper temperature and humidity in the equipment room. Too high/low
humidity may lead to bad insulation, electricity leakage, mechanical property changes
and corrosions. Too high temperature may accelerate aging of the insulation materials
and can thus significantly shorten the service life of the device. For normal temperature
and humidity of the device, please check the following table.
Environment Temperature Humidity
Operating 0℃~ 40℃10% ~ 90%RH Non-condensing
Storage -40℃~ 70℃5% ~ 90%RH Non-condensing
Clearness
L5428E
The dust accumulated on the switch can be absorbed by static electricity and result
in poor contact of metal contact points. Some measures have been taken for the
device to prevent static electricity, but too strong static electricity can cause deadly
damage to the electronic elements on the internal circuit board. To avoid the effect of
static electricity on the operation of the switch, please attach much importance to the
following items:
■Dust the device regularly, and keep the indoor air clean.
■Keep the device well grounded and ensure static electricity has been transferred.
Electromagnetic Interference
Electronic elements including capacitance and inductance on the device can be affected
by external interferences, such as conducted emission by capacitance coupling,
inductance coupling, and impedance coupling. To decrease the interferences, please
make sure to take the following measures:
■Use the power supply that can effectively filter interference from the power grid.
■Keep the device far from high-frequency, strong-current devices, such as radio
transmitting station.
■Use electromagnetic shielding when necessary.
Lightening Protection
Extremely high voltage currents can be produced instantly when lightning occurs and
the air in the electric discharge path can be instantly heated up to 20,000℃. As this
Preparing For Installation

07
Stackable L2+/L3 Managed Switch
instant current is strong enough to damage electronic devices, more effective lightning
protection measures should be taken.
■Ensure the rack and device are well earthed.
■Make sure the power socket has a good contact with the ground.
■Keep a reasonable cabling system and avoid induced lightning.
■Use the signal SPD (Surge Protective Device) when wiring outdoor.
Note: For detailed lightning protection measures, please refer to Chapter 4
Lightning Protection.
Installation Site
When installing the device on a rack or a flat workbench, please note the following
items:
■The rack or workbench is flat and stable, and sturdy enough to support the weight of
5.5kg at least.
■The rack or workbench has a good ventilation system. The equipment room is well
ventilated.
■The rack is well grounded. Keep the power socket less than 1.5 meters away from the
device.
2.3 Installation Tools
■Phillips screwdriver
■ESD-preventive wrist wrap
■Cables
Note: These tools are not provided with our product. If needed, please self purchase
them.
2.4 Installation & Connection Flow
The switch provides two interfaces to install the swappable Power Supply Module and
Interface Card, and one interface to connect to Redundant Power Supply. The switch
has already been installed with a Power Supply Module PSM150-AC, and you can also
self-purchase the Interface Card/Redundant Power Supply if needed.
Preparing For Installation

08
Stackable L2+/L3 Managed Switch
The Installation & Connection flow is shown as the following figure.
Start
Install the switch to the
specified position
Connect to the ground
Install Interface Card? No
Yes
Install the Interface Card
Verify installation
Connect to SFP/SFP+
transceivers and cables
Also power on via
RPS?
Connect to RPS
Yes
No
Power on via Power
Supply Module
End
Figure 2-1 Installation & Connection Flow
Caution: Make sure the power supply of RPS150 is cut off when connecting or
disconnecting RPS150 and the switch, otherwise both RPS150 and the switch may work
abnormally or even be damaged.
Note: The switch can be powered by the Power Supply Module and Redundant Power
Supply simultaneously or individually. If simultaneously, the Power Supply Module and
Redundant Power Supply together will enable your network to enjoy the benefit of
uninterrupted operation.
Preparing For Installation

09
Stackable L2+/L3 Managed Switch
Chapter 3 Installation
3.1 Installing the Switch on a Desktop
To install the switch on the desktop, please follow the steps below:
1. Set the switch on a flat surface strong enough to support the entire weight of the
device with all fittings.
2. Remove the adhesive backing papers from the rubber feet.
3. Turnover the switch and attach the supplied rubber feet to the recessed areas on
the bottom at each corner of the switch.
Feet
Bottom of the Device
Notch
Figure 3-1 Desktop Installation
3.2 Installing the Switch Into a 19-inch Rack
To install the switch in an EIA standard-sized, 19-inch rack, follow the instructions
described below:
1. Check the grounding and stability of the rack.
2. Secure the supplied rack-mounting brackets to each side of the switch with supplied
screws, as illustrated in the following figure.
Rack-mounting Bracket
Screw
Figure 3-2 Bracket Installation
Installation

10
Stackable L2+/L3 Managed Switch
3. After the brackets are attached to the switch, use suitable screws (not provided) to
secure the brackets to the rack, as illustrated in the following figure.
Rack
Figure 3-3 Rack Installation
Caution:
■Please set 5~10cm gaps around the device for air circulation.
■Please avoid any heavy thing placed on the switch.
■Please mount switches in sequence from the bottom to top of the rack and ensure a
certain clearance between switches for the purpose of heat dissipation.
3.3 Installing & Removing the Power Supply Module
The Power Supply Module has already been installed in the switch. Operate as the
following steps if you need to replace the Power Supply Module.
■Removing the Power Supply Module
1. Wear an ESD-preventive wrist strap, and make sure that it has good skin contact and
is well grounded.
2. Remove the power cord from the power module and the external power supply
system.
3. Use a Phillips screwdriver to loosen the captive screws at both sides of the power
supply module until all spring pressure is released.
4. Pull the handle by one hand towards you along the guide rails, and hold the bottom
of the module by the other hand, until it completely comes out of the switch chassis.
5. In order to better protect the removed power supply module, it is recommended to
package it by an antistatic bag.
6. After removing the PSM150-AC, please install the protective cover as soon as
possible to prevent dust from entering and ensure the normal ventilation in the
switch.
■Installing the Power Supply Module
1. Wear an ESD-preventive wrist strap, and make sure that it has good skin contact and
is well grounded.
Installation

11
Stackable L2+/L3 Managed Switch
2. If the protective cover has been installed on the power supply module slot of the
switch, use a Phillips screwdriver to loosen the mounting screws of the protective
cover and remove the protective cover, as shown in the following figure.
Figure 3-4 Removing the Protective Cover
3. Grip the handle of the module by one hand, and hold the bottom of the module by
the other hand, as shown in the following figure. Then gently push the module in
along the slot guide rail until the module is flush with the switch.
Note: Do not use too much force in the operation. If resistance is encountered or
positions of the power supply module appear larger deflection in the operation of
installation, you must first remove the module and then reinstall the module.
Switch
PSM150-AC
Power
PSOK
Fault
Figure 3-5 Installing the Power Supply Module
4. Tighten the captive screws with a Phillips screwdriver to fix the power supply module
in place. If the screws cannot be tighten, probably because the power supply module
is not installed properly due. Please check carefully.
3.4 Installing & Removing the Interface Card (Optional)
■Installing the Interface Card
1. Wear an ESD-preventive wrist strap, and make sure that it has good skin contact and
is well grounded.
2. Use a Phillips screwdriver to loosen the mounting screws of the protective cover on
the interface card slot of the switch and remove the protective cover, similar to the
procedure shown in Figure 3-4.
Installation

12
Stackable L2+/L3 Managed Switch
3. Hold the captive screws on the front panel of the interface card, and gently push
the interface card in along the slot guide rail until the interface card is flush with the
switch, as shown in the following figure.
Switch
Figure 3-6 Installing the Interface Card
4. Tighten the captive screws with a Phillips screwdriver to fix the interface card in
place.
■Removing the Interface Card
1. Wear an ESD-preventive wrist strap, and make sure that it has good skin contact and
is well grounded.
2. Use a Phillips screwdriver to loosen the captive screws at both sides of the interface
card until all spring pressure is released.
3. Pull the interface card towards you along the guide rails, until it completely comes
out of the switch chassis.
4. After removing an interface card, if no new interface card is to be installed, please
install the protective cover as soon as possible to prevent dust from entering and
ensure the normal ventilation in the switch.
Note:
■TX432 supports hot plug, so if necessary you can install or remove the interface card
when the switch is operating. However, it is recommended that the power be turned
off during installation.
■Do not touch the surface-mounted components directly with your hand while the
switch is in operation.
3.5 Stacking Using Interface Card on Rear Panel
You can connect up to 8 switches to form a stack with a single management IP address.
Follow the steps below to connect the switches and configure the stack ports, then the
switches will automatically elect a master unit and establish a stack. Once the stack
is established, you can use any port of any switch in the stack to manage the stack
system.
You can use either the SFP+ ports on the front panel or the Interface Card on the rear
panel to create a stack. These two pairs of stack ports cannot be mixedly used in the
stack connection.
Here we take stacking using Interface Card for example.
1. Install an Interface Card (TX432 for example) into the Interface Card Slot of each
switch, see 3.4 Installing & Removing the Interface Card.
Installation

13
Stackable L2+/L3 Managed Switch
Installation
2. Log on to the GUI of each switch, go to Stack→Stack Management→Stack
Cong page to enable the stack mode of port M1 and M2 (port 1/1/1 and 1/1/2 on
the GUI). Remember to click Save Cong after the configuration.
3. Power off the switches, and then connect a 10G SFP+ cable (TXC432-CU1M/TXC432-
CU3M of TP-LINK for example) between each pair of Interface Cards among the
switches, thus forming a ring topology as the following figure shows. A ring topology
system provides redundancy and resiliency to the stack.
M1
SFP+
M2
SFP+
CLASS 1 LASER PRODUCT
TX432
Module
Power
PS OK
Fault
PSM150-AC
100-240V~ 50/60Hz 2.5A
M1
SFP+
M2
SFP+
CLASS 1 LASER PRODUCT
TX432
Module
Power
PS OK
Fault
PSM150-AC
100-240V~ 50/60Hz 2.5A
M1
SFP+
M2
SFP+
CLASS 1 LASER PRODUCT
TX432
Module
Power
PS OK
Fault
PSM150-AC
100-240V~ 50/60Hz 2.5A
M1
SFP+
M2
SFP+
CLASS 1 LASER PRODUCT
TX432
Module
SFP+ cable
Figure 3-7 Stacking Using Interface Card
4. Power on the switches, then the switches will automatically select a master unit. The
Master LED of the selected switch will be on.
5. You can access to any member of the stack via Web/SSH/Telnet/Console connection,
thus to manage all the switches in the stack.
Caution: In the process of using TP-LINK SFP+ Cables, please never bend them into
a radius of 45mm (1.77 inch) or less, because it may permanently damage the SFP+
Cables.

14
Stackable L2+/L3 Managed Switch
Lightning Protection
Chapter 4 Lightning Protection
4.1 Cabling Reasonably
In the actual network environment, you may need cable outdoors and indoors, and
the requirements for cabling outdoors and indoors are different. A reasonable cabling
system can decrease the damage of induced lightning to devices.
Note: It’s not recommended using Ethernet cables outdoors. When cabling outdoors,
please use a signal lightning arrester.
■Requirements for Cabling Outdoors
■Aerial cabling without safeguard is not allowed.
■It’s not allowed cabling down the building to connect network devices in different
floors.
■Outdoor cables should be buried and paved to the indoor through basement. A piece
of steel wire should be paved underground along the pipe and connected to the
lightning protection terminal of the building for shielding. Before connecting the cable
to the device, install a signal lightning arrester on the corresponding port.
■When an aerial cable is set up, the cable should be through a metal pipe (15m long
at least) before coming into the building. The two ends of this metal pipe should be
grounded. Before connecting the cable to the device, install a signal lightning arrester
on the corresponding port.
■It’s not necessary to pave STP cables through pipes. The shielded layer of STP cable
should be well grounded. Before connecting the cable to the device, install a signal
lightning arrester on the corresponding port.
■Requirements for Cabling Indoors
When cabling indoors, keep a certain distance away from the devices that may cause
high-frequency interferences, such as down-conductor cable, powerline, power
transformer and electromotor.
■The main cable should be paved in the metal raceway of the access shaft. When
cabling, keep the loop area formed by the cable itself as small as possible.

15
Stackable L2+/L3 Managed Switch
■Requirements for the distance between Ethernet cable and other pipelines are shown
in the table.
Other Pipelines
Ethernet Cable
Min Parallel Net Length
L (mm)
Min Parallel-overlapping Net Height
H (mm)
Down-conductor 1000 300
PE 50 20
Service pipe 150 20
Compressed air pipe 150 20
Thermal pipe (not wrapped) 500 500
Thermal pipe (wrapped) 300 300
Gas pipe 300 20
The two diagrams below demonstrate parallel net length and parallel-overlapping net
height.
Note: The above minimum net length/height is required when metal raceway is not
used. If any requirements cannot be met, you can add a steel tube or metal raceway
for shielding.
■Requirements for the distance between Ethernet cable and high-power electric
devices are in following tables.
Cable Pave Way Min Parallel
Length (mm)
<2kVA
powerline
Parallel cabling 130
One is in the grounded metal raceway or metal pipe 70
The both are in the grounded metal raceway or metal pipe 10
2~5kVA
powerline
Parallel cabling 300
One is in the grounded metal raceway or metal pipe 150
The both are in the grounded metal raceway or metal pipe 80
>5kVA
powerline
Parallel cabling 600
One is in the grounded metal raceway or metal pipe 300
The both are in the grounded metal raceway or metal pipe 150
Device Min Distance (m)
Switch case 1.00
Transformer room 2.00
Elevator tower 2.00
Air-conditioner room 2.00
Lightning Protection