Allied Telesis GS910/XST Series User manual

613-003021 Rev. B
GS910/XST Series
10 GIGABIT ETHERNET UNMANAGED SWITCHES
GS910/10XST
GS910/18XST
GS910/26XST
Installation and User’s Guide

Copyright  2023 Allied Telesis, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
Microsoft and Internet Explorer are registered trademarks of Microsoft Corporation. Netscape Navigator is a registered
trademark of Netscape Communications Corporation. All other product names, company names, logos or other
designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesis, Inc. reserves the right to make changes in specifications and other information contained in this document
without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied
Telesis, Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited
to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesis, Inc. has
been advised of, known, or should have known, the possibility of such damages.

3
Electrical Safety and Emissions
Standards
This section contains the following:
“US Federal Communications Commission”
“Industry Canada”
“Safety, Electro Magnetic interference, and Electro Magnetic Susceptibility” on page 4
“Translated Safety Statements” on page 4
US Federal Communications Commission
Radiated Energy
Note
This equipment has been tested and found to comply with the limits for a Class A digital device
pursuant to Part 15 of 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 this 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.
Note
Modifications or changes not expressly approved of by the manufacturer or the FCC, can void
your right to operate this equipment.
Industry Canada
Radiated Energy
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

4
Safety, Electro Magnetic interference, and Electro Magnetic
Susceptibility
Safety UL62368-1 (cULus)
IEC62368-1
EN62368-1
CE
RoHS
Electro Magnetic Interference (EMI) FCC Class A
ICE-003: 2020, Issue 7, Class A
EN55032: 2015+A11:2020, Class A
CISPR 32: 2012 Class A
VCCI-CISPR 32: 2016, Class A
AS/NZS CISPR 32: 2015+A1:2020, Class A
Electro Magnetic Susceptibility (EMS) EN55024: 2010
EN55035: 2017
EN61000-4-2: 2009
EN61000-4-3: 2006 + A1: 2008 + A2: 2010
EN61000-4.4: 2012
EN61000-4.5: 2014
EN61000-4-6: 2014
EN61000-4-8: 2010
EN61000-4-11: 2004
EN61000-3.2: 2014
EN61000-3.3: 2013
Warning
In a domestic environment this product may cause radio interference in which case the user
may be required to take adequate measures.  E84
Translated Safety Statements
Important: The  indicates that translations of the safety statement are available in the PDF
document Translated Safety Statements posted on the Allied Telesis website at
alliedtelesis.com/support.

5
Preface ..................................................................................................................................................................................7
Safety Symbols Used in this Document ..........................................................................................................................8
Contacting Allied Telesis .................................................................................................................................................9
Chapter 1: Product Description ........................................................................................................................................11
Overview .......................................................................................................................................................................12
Key Features..........................................................................................................................................................12
Components ..................................................................................................................................................................14
Front Panels...........................................................................................................................................................14
Back Panel .............................................................................................................................................................15
10/100/1000 Base-T Twisted Pair Ports ................................................................................................................15
100Base-TX, 1G/2.5G/5G/10G Base-T Twisted Pair Ports ...................................................................................16
SFP/SFP+ Slot .......................................................................................................................................................17
LEDs ......................................................................................................................................................................19
DIP Switches..........................................................................................................................................................22
Power Connector ...................................................................................................................................................23
Loop Prevention ............................................................................................................................................................24
Root Switch ............................................................................................................................................................ 24
Non-root Switch......................................................................................................................................................24
Examples with Multiple Loop Prevention Switches ................................................................................................25
Examples with Loop Prevention and Regular Switches.........................................................................................26
Examples within a Loop Prevention Switch............................................................................................................27
Guidelines for Loop Prevention ..............................................................................................................................27
Enabling Loop Protection .......................................................................................................................................27
Disabling Loop Protection ......................................................................................................................................27
Energy Efficiency Ethernet (EEE) .................................................................................................................................28
Ethernet Switching Basics .............................................................................................................................................29
Duplex Mode ..........................................................................................................................................................29
Store-and- Forward ................................................................................................................................................29
Backpressure and Flow Control .............................................................................................................................29
Chapter 2: Installation ....................................................................................................................................................... 31
Reviewing Safety Precautions.......................................................................................................................................32
Selecting a Site for the Switch.......................................................................................................................................34
Unpacking the Switch....................................................................................................................................................36
Installing the Switch on a Table or Desktop ..................................................................................................................37
Guidelines for Installing the Switch on a Table or Desktop ....................................................................................37
Installing the Switch Flat on a Table or Desktop .................................................................................................... 38
Installing the Switch on a Wall.......................................................................................................................................39
Wall-Mount Bracket Kits.........................................................................................................................................39
Guidelines for Installing the Switch on a Wall ........................................................................................................39
Installing the Switch in an Equipment Rack...................................................................................................................41
Rack Mount Kits ..................................................................................................................................................... 41
Cabling Twisted Pair Ports ............................................................................................................................................42
Guidelines to Connecting Twisted Pair Cables ......................................................................................................42
Installing an SFP Transceiver .......................................................................................................................................43
Guidelines to Handling SFP Transceivers..............................................................................................................43
Installing an SFP Transceiver ................................................................................................................................43
Powering On the Switch ................................................................................................................................................46
Chapter 3: Wall Installation Using the BRKT-J22 Kit .....................................................................................................47
Unpacking the BRKT-J22 Wall Mount Kit......................................................................................................................48
Contents

Contents
6
Installing a Switch Using the BRKT-J22 Wall Mount Kit ................................................................................................49
What to Prepare .....................................................................................................................................................49
Installing a Switch with the Front Panel Facing Sideways......................................................................................49
Installing a Switch Facing Up .................................................................................................................................54
Chapter 4: Wall Installation Using the BRKT-J24 Kit .....................................................................................................57
Unpacking the BRKT-J24 Wall Mount Kit ......................................................................................................................58
Installing the Switch on a Wall Using the BRKT-J24 Brackets ......................................................................................59
What to Prepare for Wall Installation ......................................................................................................................59
Installing the Switch on a Wall................................................................................................................................59
Chapter 5: Rack Installation Using the RKMT-J09 Kit ....................................................................................................63
Unpacking the RKMT-J09 Rack Mount Kit ....................................................................................................................64
Installing a Switch Using the RKMT-J09 Rack Mount Kit ..............................................................................................65
What to Prepare .....................................................................................................................................................65
Installing a Switch Using the Rack Mount Kit .........................................................................................................65
Chapter 6: Rack Installation Using the RKMT-J14 Kit ....................................................................................................67
Unpacking the RKMT-J14 Rack Mount Kit ....................................................................................................................68
Installing a Switch Using the RKMT-J14 Rack Mount Kit ..............................................................................................69
What to Prepare .....................................................................................................................................................69
Installing a Switch Using the Rack Mount Kit .........................................................................................................69
Chapter 7: Rack Installation Using the RKMT-J15 Kit ....................................................................................................71
Unpacking the RKMT-J15 Rack Mount Kit ....................................................................................................................72
Installing Two Switches in a Row of the Equipment Rack .............................................................................................73
What to Prepare .....................................................................................................................................................73
Installing Two Switches in a Row of the Equipment Rack......................................................................................73
Chapter 8: Troubleshooting ..............................................................................................................................................77
Appendix A: Technical Specifications .............................................................................................................................79
Physical Specifications ..................................................................................................................................................79
Power Specifications .....................................................................................................................................................79
Environmental Specifications.........................................................................................................................................80
RJ-45 Twisted Pair Port Connectors .............................................................................................................................81

7
Preface
This manual is the installation and user’s guide for the GS910/XST Series
10 Gigabit Ethernet Unmanaged Switches. The switch models included in
this manual are:
GS910/10XST
GS910/18XST
GS910/26XST
This Preface contains the following sections:
“Safety Symbols Used in this Document” on page 8
“Contacting Allied Telesis” on page 9

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
8
Safety Symbols Used in this Document
This document uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.

Preface
9
Contacting Allied Telesis
If you need Allied Telesis technical support, visit
www.alliedtelesis.com/support.

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
10

11
Chapter 1
Product Description
This chapter contains the follows sections:
“Overview” on page 12
“Components” on page 14
“Loop Prevention” on page 24
“Energy Efficiency Ethernet (EEE)” on page 28
“Ethernet Switching Basics” on page 29

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
12
Overview
The GS910/XST Series Switches are eco-friendly unmanaged switches
with one SFP/SFP+ uplink port, one 100M/1G/2.5G/5G/10Gigabit uplink
port, and 8, 16 or 24 ports of 10/100/1000Mbps. The switch provides a
simple solution to integrate 10, 100, and 1000Mbps devices that exist in
your network and expand the network to up to 10Gigabit speed. The
GS910/XST series switches are shown in Figure 1.
x
Figure 1. GS910/XST Series Switches
Key Features The GS910/XST series switch has the following key features:
8 10/100/1000Mbps twisted pair ports with RJ-45 connectors for
the GS910/10XST model
16 10/100/1000Mbps twisted pair ports with RJ-45 connectors for
the GS910/18XST model
24 10/100/1000Mbps twisted pair ports with RJ-45 connectors for
the GS910/26XST model
One 100M/1G/2.5G/5G/10Gbps twisted pair port with RJ-45
connector
One 1G/10Gbps SFP/SFP+ slot
IEEE802.3 compliant for 10Base-T
GS910/18XST
GS910/26XST
GS910/10XST

Chapter 1: Product Description
13
IEEE802.3u compliant for 100Base-TX
IEEE802.3ab compliant for 1000Base-T
IEEE802.3bz compliant for 2.5GBase-T and 5GBase-T
IEEE802.3an compliant for 10Gbps Ethernet
Auto-Negotiation (IEEE 802.3u-compliant) on all ports
Store-and-forward switching method
Jumbo frames of 12K bytes without frame loss
Up to 16,384 MAC address entries
Link down power saving on 10/100/1000Mbps twisted pair ports
Auto MDI/MDI-X on all twisted pair ports
Head-of-Line (HOL) Blocking Prevention
IEEE 802.3x flow control for full-duplex operation
Back pressure flow control for half-duplex operation
EAP/BPDU pass through
Loop Prevention, which can be enabled or disabled from the DIP
switch
IEEE 802.3az Energy Efficient Ethernet on 10/100/1000Mbps
copper ports when operating at 100/1000Mbps speed, which can
be enabled or disabled from the DIP switch
RoHS compliant
Wall mounting and equipment rack mounting with optional
brackets. See Table 1.
Table 1. Wall-mount and Rack-Mount Brackets
Model Wall Mounting Rack Mounting
GS910/10XST BRKT-J24 RKMT-J14
RKMT-J15
GS910/18XST
BRKT-J22 RKMT-J09
GS910/26XST

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
14
Components
This section describes the components of the GS910/XST series
switches.
Front Panels The components of the front panels are shown in Figure 2, Figure 3, and
Figure 4.
x
Figure 2. GS910/10XST Front Panel
x
Figure 3. GS910/18XST Front Panel
x
Figure 4. GS910/26XST Front Panel
100Base-TX, 1/2.5/5/10GBase-T Port
SFP/SFP+ Slot
DIP Switches
Switch LEDs
GS910/10XST Switch
10/100/1000Base_T Ports
10/100/1000Base_T Ports
100Base-TX, 1/2.5/5/10GBase-T Port
SFP/SFP+ Slot
DIP Switches
Switch LEDs
GS910/18XST Switch
10/100/1000Base_T Ports
100Base-TX, 1/2.5/5/10GBase-T Port
SFP/SFP+ Slot
DIP Switches
Switch LEDs
GS910/26XST Switch

Chapter 1: Product Description
15
Back Panel The GS910/XST series switch has an internal power supply with a single
AC power supply socket on the rear panel. Figure 6 shows the rear panel
of the GS910/10XST switch. The rear panel for the GS910/18XST and
GS910/26XST is as shown in Figure 6.
x
Figure 5. Rear Panel for the GS910/10XST Switch
x
Figure 6. Rear Panel for the GS910/18XST and GS910/26XST Switches
10/100/1000
Base-T Twisted
Pair Ports
The GS910/10XST switch has eight 10/100/1000Base-TX twisted pair
ports, from port 1 to port 8; the GS910/18XST switch has 16, from port 1 to
port 16; the GS910/26XST switch has 24, from port 1 to port 24.
Connector
All the twisted pair ports feature 8-pin RJ-45 connectors. For the port
pinouts, see “RJ-45 Twisted Pair Port Connectors” on page 81.
Speed
The ports are 10Base-T, 100Base-TX, and 1000Base-T compliant and
capable of 10 Mbps, 100 Mbps, and 1000 Mbps speeds.
The ports are IEEE 802.3u Auto-Negotiation compliant. With
Auto-Negotiation, the switch automatically matches the highest possible
common speed between the switch port and its end-node.
For example, if an end-node is capable of only 10 Mbps, the switch sets
the port connected to the end-node to 10 Mbps.
AC Power Connector
AC Power Connector

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
16
Duplex Mode
Each twisted pair port on the switch can operate in either half- or
full-duplex mode. The twisted pair ports are IEEE 802.3u-compliant and
automatically negotiate the duplex mode setting.
Note
In order for the switch to set the duplex mode for each port correctly,
the end-nodes that you connect to the switch ports also need to be
configured for Auto-Negotiation. Otherwise, a duplex mode
mismatch can occur, affecting network performance. For further
information, refer to “Duplex Mode” on page 29.
Cabling
Table 2 contains the cabling specifications for the twisted pair ports.
Auto MDI/MDI-X
All of the twisted pair ports on the switch feature auto-MDI to automatically
configure themselves as MDI or MDI-X when connected to an end-node.
Consequently, you can use a straight-through twisted pair cable to
connect any network device to a port.
100Base-TX,
1G/2.5G/5G/10G
Base-T Twisted
Pair Ports
Port 9 on the GS910/10XST switch, port 17 on the GS910/18XST switch,
and port 25 on the GS910/26XST switch are 100M/1G/2.5G/5G/10G
Base-T twisted pair ports.
Connector
The port feature 8-pin RJ-45 connector. For the port pinouts, see “RJ-45
Twisted Pair Port Connectors” on page 81.
Table 2. Twisted Pair Cabling and Distances
Speed Type of Cable Maximum Operating
Distance
10 Mbps Two-pair Category 3 or better
unshielded twisted pair cable
100 m (328 ft)
100 Mbps Two-pair Category 5
unshielded twisted pair cable
100 m (328 ft)
1000 Mbps Four-pair Category 5e
unshielded twisted pair cable
100 m (328 ft)

Chapter 1: Product Description
17
Speed
Port 9 on the GS910/10XST switch, port 17 on the GS910/18XST switch,
and port 25 on the GS910/26XST switch are capable of 100Mbps, 1Gbps,
2.5Gbps, 5Gbps, and 10Gbps speeds. The ports are IEEE802.3u
Auto-Negotiation compliant. With Auto-Negotiation, the switches
automatically match the highest possible common speed between the
switch port and its end-node.
Duplex Mode
These twisted pair ports operate in the full-duplex mode.
Auto MDI/MDI-X
These twisted pair ports feature auto-MDI to automatically configure
themselves as MDI or MDI-X when connected to an end-node.
Consequently, you can use a straight-through twisted pair cable to
connect any network device to a port.
SFP/SFP+ Slot The switch supports 1G and 10G speed on one SFP/SFP+ slot. Port 10 on
the GS910/10XST switch, port 18 on the GS910/18XST switch, and port
26 on the GS910/26XST switch are SFP/SFP+ ports.
Table 3 on page 17 shows a list of supported SFP transceivers:
Table 3. Supported SFP Transceivers
Supported Model Maximum Operating Temperature
AT-SP10SR/I 85° C (185° F)
AT-SP10LR/I 85° C (185° F)
AT-SP10LR20/I 85° C (185° F)
AT-SP10ER40/I 85° C (185° F)
AT-SP10ZR80/I 85° C (185° F)
AT-SPSX 70° C (158° F)
AT-SPSX/I 85° C (185° F)
AT-SPEX 70° C (158° F)
AT-SPLX10 70° C (158° F)
AT-SPLX10/I 85° C (185° F)
AT-SPLX10a 70° C (158° F)
AT-SPLX40 70° C (158° F)

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
18
*1Only 10G is supported.
Guidelines for SFP Transceivers
Here are guidelines for SFP transceivers:
You must purchase an SFP transceiver separately.
An SFP model attached to the switch affects the switch’s maximum
operating temperature. For the switch’s maximum operating
temperatures, see Table 19 on page 80.
For more information about each SFP transceiver, go to
www.alliedtelesis.com/library.
AT-SPZX80 70° C (158° F)
AT-SP10BD10/I-12 85° C (185° F)
AT-SP10BD10/I-13 85° C (185° F)
AT-SP10BD40/I-12 85° C (185° F)
AT-SP10BD40/I-13 85° C (185° F)
AT-SPBD10-13 70° C (158° F)
AT-SPBD10-14 70° C (158° F)
AT-SPBD20-13/I 85° C (185° F)
AT-SPBD20-14/I 85° C (185° F)
AT-SPBD40-13/I 85° C (185° F)
AT-SPBD40-14/I 85° C (185° F)
AT-SPTX 70° C (158° F)
AT-SP10-LRa/I 85° C (185° F)
AT-SP10T*185° C (185° F)
AT-SP10TM*185° C (185° F)
AT-SP10SR 70° C (158° F)
AT-SP10LR 70° C (158° F)
AT-SP10BD20-12 70° C (158° F)
AT-SP10BD20-13 70° C (158° F)
Table 3. Supported SFP Transceivers (Continued)
Supported Model Maximum Operating Temperature

Chapter 1: Product Description
19
LEDs The switch has LEDs to display status information on the switch and ports.
Switch LEDs
The LEDs on the front panel of the switch display status information. See
Figure 7.
x
Figure 7. Switch LEDs
Table 4 describes the switch LEDs.
LEDs for the 10/100/1000Mbps Ports
The LEDs on port 1 to port 8 on the GS910/10XST switch, port 1 to port 16
on the GS910/18XST switch, and port 1 to port 24 on the GS910/26XST
switch display Link/Activity and Speed and Loop Prevention status on
each port. See Figure 8 on page 20.
Table 4. Switch LEDs
LED State Description
SYSTEM Red The system is booting up.
Off The system operating normally.
LOOP Green The Loop Prevention is enabled.
Blinking
Green
A loop has been detected and the switch
blocks the looped port to stop the loop.
Off The Loop Prevention is disabled.
POWER Green The switch is powered on.
Off The switch is not receiving power.

GS910/XST Series 10 Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
20
Figure 8. LEDs on 10/100/1000Mbps Ports
Table 5 describes the switch LEDs.
Table 5. 10/100/1000Mbps Port LEDs
LED State Description
Link/Activity Green The port has established a link to a network
device at 1Gbps speed.
Blinking
Green
The port is transmitting or receiving frames
at 1Gbps speed.
Amber The port has established a link to a network
device at 10M or 100Mbps speed.
Blinking
Amber
The port is transmitting or receiving frames
at 10M or 100Mbps speed.
Off The port has not established a link with a
network device.
Duplex/Port
Loop
Green The port is operating in full duplex mode.
Amber The port is operating in half duplex mode.
Blinking
Green
A loop is detected while the port is operating
at 1Gbps. The switch blocks the looped port
to stop the loop.
Blinking
Amber
A loop is detected while the port is operating
at 10M or 100Mbps. The switch blocks the
looped port to stop the loop.
Off No link is established at the port.
Link/Activity Duplex/Loop
Link/Activity Duplex/Loop