All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis,
Inc.
Allied Telesis and the Allied Telesis logo are trademarks of Allied Telesis, Incorporated. 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.
Electrical Safety and Emissions Standards
This product meets the following standards.
U.S. 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
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
RFI EmissionsFCC Class A, EN55022 Class A, EN61000-3-2, EN61000-3-3, C-TICK,
CE
Warning: In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
ImmunityEN55024
Electrical SafetyEN60950 (TUV), UL 60950 (
CULUS
)
Laser SafetyEN60825
3
Translated Safety Statements
Important: The indicates that a translation of the safety statement is available in a PDF
document titled “Translated Safety Statements” on the Allied Telesis website at http://www.alliedtelesis.com/support.
Symbol Conventions .................................................................................................................................. 12
Chapter 1: Features ....................................................................................................................................... 16
Power Conservation ............................................................................................................................ 17
MAC Address Table ............................................................................................................................ 17
Front and Back Panels............................................................................................................................... 18
Reboot/Reset the Switch ..................................................................................................................... 34
Power Supply ............................................................................................................................................. 35
Unpacking the Switch................................................................................................................................. 43
Installing the Switch on a Desktop ............................................................................................................. 45
Installing the Switch in an Equipment Rack ............................................................................................... 46
Installing the Switch on a Wall ................................................................................................................... 48
Cabling the Switch ..................................................................................................................................... 54
Powering On the Switch............................................................................................................................. 55
Power Specifications.................................................................................................................................. 62
Safety and Electromagnetic Emissions Certifications ................................................................................ 63
Connectors and Port Pinouts ..................................................................................................................... 63
5
Contents
6
Figures
Figure 1: AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Front Panels............................................................. 18
Figure 2: AT-GS950/10PS Back Panel................................................................................................................................ 19
Figure 3: AT-GS950/16PS Back Panel................................................................................................................................ 19
Figure 4: AT-GS950/48PS Back Panel................................................................................................................................ 19
Figure 5: PWR LED on AT-GS950/10PS ............................................................................................................................ 24
Figure 6: SYSTEM LED on AT-GS950/16PS...................................................................................................................... 25
Figure 7: SYS LED on AT-GS950/48PS.............................................................................................................................. 25
Figure 8: AT-GS950/10PS Link/Activity and Speed LEDs................................................................................................... 26
Figure 10: AT-GS950/48PS Link/Activity/Speed Port LED.................................................................................................. 27
Figure 11: AT-GS950/10PS SFP Speed and Link/Activity LEDs......................................................................................... 28
Figure 12: AT-GS950/16PS SFP Status LEDs.................................................................................................................... 29
Figure 13: AT-GS950/48PS SFP Status LEDs.................................................................................................................... 29
Figure 14: AT-GS950/10PS PoE and PoE MAX LEDs........................................................................................................ 31
Figure 15: AT-GS950/16PS PoE and PoE MAX LEDs........................................................................................................ 31
Figure 16: AT-GS950/48PS PoE and PoE MAX LEDs........................................................................................................ 31
Figure 19: Attaching the Rubber Feet ................................................................................................................................. 45
Figure 20: Attaching the Rack-Mount Brackets to the Switch.............................................................................................. 46
Figure 21: Attaching the Rack-Mount Brackets to the Switch (Continued).......................................................................... 47
Figure 22: Mounting the Switch in an Equipment Rack ....................................................................................................... 47
Figure 23: Attaching the Brackets to Install the Switch on a Wall........................................................................................ 48
Figure 24: Marking the Screw Hole Locations....................................................................................
Figure 25: Securing the Switch to the Wall.......................................................................................................................... 50
Figure 26: Removing the Dust Plug from an SFP Slot ........................................................................................................ 51
Figure 27: Inserting the SFP................................................................................................................................................ 52
Figure 28: Positioning the SFP Handle in the Upright Position ........................................................................................... 52
Figure 29: Plugging in the AC Power Cord.......................................................................................................................... 55
Figure 30: RJ-45 Connector and Port Pin Layout................................................................................................................ 63
................................. 49
7
List of Figures
8
Tables
Table 1. Max Ports Supported per PoE Class ....................................................................................................................22
Table 3. AT-GS950/10PS PWR LED Functional Descriptions ...........................................................................................24
Table 4. AT-GS950/16PS and AT-GS950/48PS SYS LED Functional Descriptions ..........................................................25
Table 5. AT-GS950/10PS L/A and SPD LEDs Functional Descriptions .............................................................................26
Table 6. AT-GS950/16PS and AT-GS950/48PS L/A LED Functional Descriptions ...........................................................28
Table 7. SFP Slot LED Functional Descriptions .................................................................................................................30
Table 8. PoE Status LED Functional Descriptions .............................................................................................................31
Table 9. Twisted Pair Cabling and Distances .....................................................................................................................42
Table 13. Max AC Input Power Specifications ....................................................................................................................62
Table 14. Max Ports Supported per PoE Class ..................................................................................................................62
Table 15. Safety and Electromagnetic Emissions Certifications .........................................................................................63
Table 16. MDI Pin Signals (10Base-T or 100Base-TX) ......................................................................................................63
Table 17. MDI-X Pin Signals (10Base-T or 100Base-TX) ..................................................................................................64
This guide contains the installation instructions for the AT-GS950/10PS,
AT-GS950/16PS, and AT-GS950/48PS Gigabit Ethernet PoE+ Switches.
This preface contains the following sections:
“Symbol Conventions” on page 12
“Contacting Allied Telesis” on page 13
11
Symbol Conventions
Note
Caution
Warning
Warning
This document uses the following conventions:
Notes provide additional information.
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warnings inform you that performing or omitting a specific action
may result in bodily injury.
Warnings inform you that an eye and skin hazard exists due to the
presence of a Class 1 laser device.
12
Contacting Allied Telesis
If you need assistance with this product, you may contact Allied Telesis
technical support by going to the Support & Services section of the Allied
Telesis web site at www.alliedtelesis.com/support. You can find links for
the following services on this page:
24/7 Online Support - Enter our interactive support center to
search for answers to your questions in our knowledge database,
check support tickets, learn about RMAs, and contact Allied
Telesis technical experts.
USA and EMEA phone support - Select the phone number that
best fits your location and customer type.
Hardware warranty information - Learn about Allied Telesis
warranties and register your product online.
Replacement Services - Submit a Return Merchandise
Authorization (RMA) request via our interactive support center.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Documentation - View the most recent installation guides, user
guides, software release notes, white papers and data sheets for
your product.
Software Updates - Download the latest software releases for your
product.
For sales or corporate contact information, go to www.alliedtelesis.com/purchase and select your region.
13
14
Chapter 1
Overview
This chapter provides descriptions of the AT-GS950/10PS, AT-GS950/
16PS, and AT-GS950/48PS Layer 2 Gigabit Ethernet Switches and
contains the following sections:
“Features” on page 16
“Front and Back Panels” on page 18
“Management Software” on page 20
“Twisted Pair Ports” on page 21
“Power over Ethernet (PoE)” on page 22
“Combo Ports” on page 23
“LEDs” on page 24
“eco-Friendly Button” on page 33
“Power Supply” on page 35
“Fans” on page 36
15
Chapter 1: Overview
Note
Note
Note
Features
Here are the hardware features of the AT-GS950/10PS, AT-GS950/16PS
and AT-GS950/48PS Gigabit Ethernet Switches.
Twisted Pair
Ports
Here are the basic features of the 10/100/1000 Mbps twisted-pair ports:
10, 16, or 48 ports per switch
10, 16, or 24 PoE ports per switch
10Base-TX, 100Base-T and 1000Base-T compliant
IEEE 802.3u Auto-Negotiation compliant
Auto-MDI/MDIX
100 meters (328 feet) maximum operating distance
IEEE 802.3x Flow Control in 10/100Base-TX full-duplex operation
IEEE 802.3x Back Pressure in 10/100Base-TX half-duplex
operation
IEEE803.3z 1000Base-T Flow Control
Support for Jumbo frames up to 10KB
RJ-45 connectors
SFP SlotsAll three switches support both 100Base-FX and 1000Base-SX/LX
transceivers. The switches support either two or four slots for SFPs:
Two SFP slots on the AT-GS950/10PS and AT-GS950/16PS
Switches
16
Four SFP slots on the AT-GS950/48PS Switch
The SFP slots are paired with twisted pair ports on the switch to
form combo ports. For more information, see “Combo Ports” on
page 23.
You must purchase SFP transceivers separately. For a list of
supported transceivers, contact your Allied Telesis distributor or
reseller.
See the product data sheets for the specific ATI SFP modules
supported by the AT-GS950 series switches.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
LEDsHere is a brief description of the port LEDs:
Power LED/SYS; refer to “PWR/SYS LEDs” on page 24.
Speed and link/activity LEDs for the twisted pair ports; refer to “10/
100/1000 BaseT Link Activity LEDs” on page 26.
Link/activity LEDs for the SFP slots; refer to “SFP LEDs” on
page 28.
ecoFriendly button turns off the LEDs to conserve electricity; refer
to “PoE LEDs” on page 30.
Installation
Options
Power
Conservation
MAC Address
Table
The AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS switches
can be installed in the following ways:
Rack mounted in a 19-inch equipment rack
Mounted on a Desk or tabletop
Wall mounted for the AT-GS950/10PS and AT-GS950/16PS only
The AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS switches
have the following power conservation features:
eco-Friendly button to turn off the port LEDs when the system is
not being monitored
High-efficiency power supply
Power scaling based on traffic loads on ports operating at 1000
Mbps (port power scaling not available at 10 or 100 Mbps)
Power shutdown on unused ports
Here are the basic features of the MAC address table:
Storage capacity up to 16KB MAC address entries
Automatic learning and aging
17
Chapter 1: Overview
AT-GS950/16
AT-GS950/48PS
AT-GS950/16PS
10/100/1000Base-T
SFP Slots
Twisted Pair Ports
AT-GS950/10PS
eco-Friendly
Button
Port and
System LEDs
eco-Friendly
Button
SFP Slots
Port and
System LEDs
eco-Friendly
Button
10/100/1000Base-T
Twisted Pair Ports
SFP Slots
System LEDs
eco-Friendly
Button
10/100/1000Base-T
Twisted Pair Ports
Front and Back Panels
Figure 1 illustrates the front panels of the AT-GS950/10PS, AT-GS950/
16PS, and AT-GS950/48PS Gigabit Ethernet Switches.
Figure 1. AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Front
Panels
18
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
AC Input
AC Input
AC Input
See Figure 2 for an example of the AT-GS950/10PS back panel.
Figure 2. AT-GS950/10PS Back Panel
See Figure 3 for an example of the AT-GS950/16PS back panel.
Figure 3. AT-GS950/16PS Back Panel
See Figure 4 for an example of the AT-GS950/48PS back panel.
Figure 4. AT-GS950/48PS Back Panel
19
Chapter 1: Overview
Management Software
The switches are shipped with the management software pre-installed.
The software provides a web-browser interface for in-band, over-thenetwork management. Although the three models have the same features,
each has a different management software program. The programs are:
AT-S110: refer to the Web Interface User’s Guide for the
AT-S111: refer to the Web Interface User’s Guide for the
AT-S112: refer to the Web Interface User’s Guide for the
In the unlikely event that the management software becomes corrupted or
damaged on the switch, you can download the software from the Allied
Telesis corporate web site and reinstall it on the switch. For instructions on
how to install new management software, see the product documentation
listed above.
AT-GS950/10PS Switch
AT-GS950/48PS Switch
AT-GS950/16PS Switch
20
Twisted Pair Ports
Note
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
The AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Layer 2
Gigabit Ethernet Switches feature 10, 16, and 48 twisted pair ports,
respectively. All ports are 10Base-T, 100Base-TX, and 1000Base-TX
compliant. You can set the port speeds and duplex modes either
automatically with IEEE 802.3u Auto-Negotiation or manually with the
management software.
The twisted pair ports feature 8-pin RJ-45 connectors. For the port pinouts,
see “Connectors and Port Pinouts” on page 63.
The ports have a maximum operating distance of 100 m (328 feet). For 10
Mbps operation, the ports require Category 3 or better 100 ohm shielded
or unshielded twisted pair cabling. For 100 or 1000 Mbps operation, the
ports require Category 5 or Enhanced Category 5 (5E) 100 ohm shielded
or unshielded twisted pair cabling.
The ports feature auto-MDI, which automatically configures the ports as
MDI or MDI-X. This feature allows you to use straight-through twisted pair
cables regardless of the wiring configurations of the ports on the end
nodes.
A switch port connected to an end node that is not using AutoNegotiation should not use Auto-Negotiation to set the speed and
duplex mode, because a duplex mode mismatch may occur. In this
case, disable Auto-Negotiation and set the port’s speed and duplex
mode manually.
21
Chapter 1: Overview
Note
Power over Ethernet (PoE)
Power over Ethernet technology permits both power and data to be
transmitted over an Ethernet cable. Both PoE (IEEE802.3af) and PoE+
(IEEE802.3at) are supported on the 10/100/1000T ports on the
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS switches. Here
is a summary of the PoE feature:
Powered device classes 0,1, 2, 3 and 4 are supported.
Port prioritization is provided on all PoE ports.
The default configuration is DISABLED on all PoE switch ports.
The PoE configuration parameters can be set through the switch’s
web management interface.
The maximum number of ports that the AT-GS950xx/PS switches will
support when only one class of service is required from the powered
devices connected to the PoE ports is shown in Table 1.
Each switch can support any combination of PoE classes 0 - 4
simultaneously up to the maximum PoE power that is available from
the switch.
When the power budget for the switch is reached, each port is allotted
power according to its priority level. You can set the power priority of each
PoE port to one of three levels: Low, High, and Critical. The default is Low.
If the priority level of all the ports is set to the same value, the lowest port
number has the highest port power priority. For instance, if you connect
eight class 4 powered devices to ports 1 - 8 on an AT-GS950/16PS
switch, the PoE power budget is exceeded, and some ports will have the
PoE power turned off. The ports allowed to transmit power are determined
by the Port Priority feature. In this case, port 1 has the highest power
priority level and transmits PoE power followed by port 2, etc., through port
6 while ports 7 and 8 are not allowed to transmit any PoE power.
22
Combo Ports
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
The AT-GS950/8 and AT-GS950/48PS Switches have two combo ports,
and the AT-GS950/16PS Switch has four combo ports. Each combo port
consists of one 10/100/1000Base-T twisted pair port and one slot for an
optional 100Base-FX or 1000Base-SX/LX SFP transceiver. The twisted
pair ports are identified with the letter “R” for “Redundant” on the front
faceplates of the units. The ports and slots are listed in Table 2.
Table 2. Combo Ports
SwitchTwisted Pair PortSFP Slot
9R9
AT-GS950/10PS
10R10
15R15
AT-GS950/16PS
16R16
45R45
AT-GS950/48PS
46R46
47R47
48R48
The combo ports have the guidelines listed here:
Only one port in a pair, either the twisted pair port or a
corresponding SFP module, can be active at a time.
The twisted pair port is the active port when its SFP slot is empty,
or when an SFP module is installed but has not established a link
to an end node.
The twisted pair port automatically changes to the redundant status
mode when an SFP module establishes a link with an end node.
A twisted pair port automatically transitions back to the active
status when the link is lost on the SFP module.
In nearly all cases, a twisted pair port and an SFP module share
the same configuration settings, including port settings, VLAN
assignments, access control lists, and spanning tree.
An exception to the shared settings is port speed. If you disable
Auto-Negotiation on a twisted pair port and set the speed and
duplex mode manually, the speed reverts to Auto-Negotiation
when an SFP module establishes a link with an end node.
23
Chapter 1: Overview
Note
PWR LED
LEDs
There are four types of LEDs on the AT-GS950 Switches:
“PWR/SYS LEDs” on page 24
“10/100/1000 BaseT Link Activity LEDs” on page 26
“SFP LEDs” on page 28
“PoE LEDs” on page 30
PWR/SYS LEDsThe PWR LED reports the status of AC power and is located on the left
side of the front panel of the AT-GS950/10PS switch. See Figure 5.
All of the port LEDs are off when the switch is operating in the low
power mode. To toggle on the LEDs, use the eco-Friendly button.
See “eco-Friendly Button” on page 33 for more information.
Figure 5. PWR LED on AT-GS950/10PS
Table 3 describes the PWR LED for the AT-GS950/10PS switch.
Table 3. AT-GS950/10PS PWR LED Functional Descriptions
LEDStateDescription
OffIndicates either the switch is not receiving
AC power or the AC input power is operating
PWR
Steady
Green
outside the normal range.
The switch is receiving AC input power and is
operating normally.
On the AT-GS950/16PS and AT-GS950/48PS switches, the power and
FAN status is indicated with a system or SYS LED. See Figure 6 on page
25 and Figure 7 on page 25.
24
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
SYSTEM LED
SYS LED
Figure 6. SYSTEM LED on AT-GS950/16PS
Figure 7. SYS LED on AT-GS950/48PS
Table 4 describes the functions for the SYS LED for the AT-GS950/16PS
and AT-GS950/48PS switches.
Table 4. AT-GS950/16PS and AT-GS950/48PS SYS LED Functional
Descriptions
LEDStateDescription
OffIndicates either the switch is not receiving
power or the AC input power is operating
outside the normal range.
SYS
Steady
Green
Steady
Red
The switch is receiving AC input power and is
operating normally.
Indicates the system is experiencing a fan
failure.
25
Chapter 1: Overview
Note
Speed (SPD)
and
Link/Activity (L/A)
LEDs
10/100/1000
BaseT Link
Activity LEDs
The Link Activity (L/A) LEDs provide information about the 10/100/
1000Base-T ports.
AT-GS950/10PS Link/Activity and Speed LEDs
The AT-GS950/10PS switch indicates L/A (link activity) and SPD (speed)
with two LEDs for each port. See Figure 8.
All of the port LEDs are off when the switch is operating in the low
power mode. To toggle on the LEDs, use the eco-Friendly button.
See “eco-Friendly Button” on page 33 for more information.
Figure 8. AT-GS950/10PS Link/Activity and Speed LEDs
See Table 5 for a description for the AT-GS950/10PS Link/Activity and
Speed LEDs.
.
Table 5. AT-GS950/10PS L/A and SPD LEDs Functional Descriptions
LEDStateDescription
OffThe port has not established a link with a
Link/Activity
network device.
(L/A)
Blinking
Green
The port is transmitting or receiving
network packets.
OffThe port has not established a link with a
network device.
Speed
(SPD)
Steady
Amber
Steady
Green
The maximum operating speed of the
port is 10 or 100 Mbps.
The maximum operating speed of the
port is 1000 Mbps.
AT-GS950/16PS Link/Activity LEDs
26
The AT-GS950/16PS switch has one LED per port on the front panel to
indicate link, activity and speed status. See Figure 9 on page 27.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Speed (SPD)
and
Link/Activity (L/A)
LEDs
Link/Activity
(L/A) LEDs
Figure 9. AT-GS950/16PS Link/Activity/Speed LEDs
The AT-GS950/48PS switch has one LED per port to indicate the port’s
link, activity and speed status. These LEDs are located next to each port.
See Figure 10.
Figure 10. AT-GS950/48PS Link/Activity/Speed Port LED
See Table 6 on page 28 for a description for the AT-GS950/16PS and
AT-GS950/48PS Link/Activity/Speed LEDs.
27
Chapter 1: Overview
Note
Speed and
Link/Activity
SFP LEDs
Table 6. AT-GS950/16PS and AT-GS950/48PS L/A LED Functional
Descriptions
LEDStateDescription
OffThe port on the has not established a link.
Steady
Green
The port has established a 1000Mbps link to
a network device, but it is not transmitting or
receiving network packets.
L/A (link/
Blinking
Green
Indicates the port transmitting or receiving
network packets at 1000 Mbps.
activity)
Steady
Amber
The SFP transceiver has established a link at
either 10 or 100 Mbps with a network device,
but is not transmitting or receiving network
packets.
Blinking
Amber
Indicates the port is transmitting or receiving
network packets at 10 or 100 Mbps.
SFP LEDsThe SFP LEDs indicate the Link/Activity and Speed status of each SFP
slot.
All of the port LEDs are off when the switch is operating in the low
power mode. To toggle on the LEDs, use the eco-Friendly button.
See “eco-Friendly Button” on page 33 for more information.
28
The AT-GS950/10PS and AT-GS950/16PS switches have the SFP LEDs
on the front panel. See Figure 11 and Figure 12 on page 29.
Figure 11. AT-GS950/10PS SFP Speed and Link/Activity LEDs
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Speed and
Link/Activity
SFP LEDs
Speed and
Link/Activity
SFP LEDs
Figure 12. AT-GS950/16PS SFP Status LEDs
The AT-GS950/48PS SFP LEDs can be found on between the upper and
lower SFP slots. See Figure 13.
Figure 13. AT-GS950/48PS SFP Status LEDs
Table 7 on page 30 describes the Link LEDs for the SFP slots.
29
Chapter 1: Overview
Note
Note
Table 7. SFP Slot LED Functional Descriptions
LEDStateDescription
OffThe port on the SFP transceiver has not
established a link with an end node or the
transceiver slot is empty.
SFP
Blinking
Green
Steady
Green
Blinking
Amber
Steady
Amber
The SFP transceiver is transmitting or
receiving network packets at 1000 Mbps.
The SFP transceiver has established a link
with a network device at 1000 Mbps, but is
not transmitting or receiving network packets.
The SFP transceiver is transmitting or
receiving network packets at 100 Mbps.
The SFP transceiver has established a link
with a network device at 100 Mbps, but is not
transmitting or receiving network packets.
PoE LEDsAll three PoE switches have two types of PoE LEDs indicating the PoE
status for each port and maximum power limit of the switch’s PoE power
supply.
Each switch model has individual PoE LEDs indicating the PoE status of
each individual port. Each chassis also has one PoE MAX LED which is
used to determine if you have exceeded the maximum power that the
chassis is capable of supplying to the powered devices (PDs).
AT-GS950/10PS and AT-GS950/16PS PoE Status LEDs
30
The AT-GS950/10PS switch can supply PoE power to PDs on ports 1 - 8.
See Figure 14 on page 31 for the locations of the PoE LEDs.
The AT-GS950/16PS switch can supply PoE power to PDs on ports 1 - 16.
See Figure 15 on page 31 for the location of the PoE LEDs.
The AT-GS950/48PS switch can supply PoE power to PDs on ports1 - 24.
See Figure 16 on page 31 for the location of the PoE status LEDs.
See “Power over Ethernet (PoE)” on page 22 for more information
about this PoE feature.
All of the port LEDs are off when the switch is operating in the low
power mode. To toggle on the LEDs, use the eco-Friendly button.
See “eco-Friendly Button” on page 33 for more information.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
PoE Port LEDs
PoE MAX LED
PoE MAX LED
PoE Port LEDs
PoE MAX LED
PoE Port LEDs
Figure 14. AT-GS950/10PS PoE and PoE MAX LEDs
Figure 15. AT-GS950/16PS PoE and PoE MAX LEDs
Figure 16. AT-GS950/48PS PoE and PoE MAX LEDs
See Table 8 for a functional description of the PoE status LEDs.
Table 8. PoE Status LED Functional Descriptions
LEDsStateDescription
Indicates the total PoE output power for all ports
Red
PoE
on the switch exceeds the maximum PoE power
that the switch can deliver.
MAX
OffIndicates the switch has spare power for a new
PD.
31
Chapter 1: Overview
Table 8. PoE Status LED Functional Descriptions (Continued)
LEDsStateDescription
GreenPoE power is being supplied to the PD normally.
Indicates the total PoE output power for this port
PoE
Amber
exceeds the maximum power budget for the
switch.
OffPoE power is not being supplied.
32
eco-Friendly Button
Note
eco-Friendly
Button
The eco-Friendly button serves multiple functions. See Figure 17 for its
location.
By pressing this button, you can:
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Toggle the front panel LEDs on and off to conserve electricity when
you are not physically monitoring the switch.
Reboot your switch while maintaining the current configuration
Reset your switch configuration to the factory default values.
eco-Friendly
Button Operation
Figure 17. eco-Friendly Button
The eco-Friendly button does not control the Power LED.
The button operates as follows:
Conserve energy: When you press the eco-Friendly button for 1 to
4 seconds, the front panel port LEDs are disabled. You may use
the button to turn off the LEDs when you are not monitoring the
switch. To turn the port LEDs on, press the eco-Friendly button for
1 to 4 seconds again. Toggling the LEDs does not affect the
network operations of the switch.
Reboot the switch: By pressing the button for 5 to 9 seconds, you
can initiate a software reboot of the switch.
Reset the switch to factory default settings: By pressing the button
for more than 10 seconds, you initiate a software reboot of the
switch followed by a reset of the switch to its factory settings.
33
Chapter 1: Overview
Caution
Note
Reboot/Reset the
Switch
Use the following procedure to reboot the switch or reboot the switch and
reset the switch to its factory default settings with the eco-Friendly button:
This procedure causes the switch to reboot. The switch does not
forward network traffic during the reboot process. Some network
traffic may be lost.
1. To reset the switch, press the eco-Friendly button for 5 to 9 seconds.
Rebooting takes approximately 1 to 2 minutes before the switch comes
back on line and is ready to transmit Ethernet traffic again.
2. To reboot the switch and reset the switch to its factory default settings,
press the eco-Friendly button for more than 10 seconds.
This initiates a software reboot of the switch and resets all of the
configuration parameters of the switch to the factory default settings,
including the management IP address which reverts to 192.168.1.1. If
your browser is configured for another IP address, you must
reconfigure your browser and workstation before you can connect to
the switch again.
In the management software, you can disable both the reboot and
factory default reset functions for the eco-Friendly button. For more
information, see “Management Software” on page 20 for a list of the
guides.
34
Power Supply
Note
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Each switch has an internal power supply with a single AC power supply
socket on the back panel. To power the switch on or off, connect or
disconnect the power cord provided with the switch. A power cord is
supplied with the switch.
For the power requirements, see the “Power Specifications” on
page 62.
35
Chapter 1: Overview
Note
Fans
Both the AT-GS950/16PS and AT-GS950/48PS switches have internal
fans. You cannot remove or replace these fans in the field. The fan status
is indicated with the SYSTEM LED. See “PWR/SYS LEDs” on page 24 for
more information.
The AT-GS950/10PS switch does not have a fan.
36
Chapter 2
Installation
This chapter contains the following sections:
“Reviewing Safety Precautions” on page 38
“Selecting a Site for the Switch” on page 41
“Cable Specifications” on page 42
“Unpacking the Switch” on page 43
“Installing the Switch on a Desktop” on page 45
“Installing the Switch in an Equipment Rack” on page 46
“Installing the Switch on a Wall” on page 48
“Installing Optional SFP Transceivers” on page 51
“Cabling the Switch” on page 54
“Powering On the Switch” on page 55
37
Chapter 2: Installation
Note
Warning
Warning
Warning
Warning
Note
Reviewing Safety Precautions
Please review the following safety precautions before you begin to install
the chassis or any of its components.
The indicates that a translation of the safety statement is
available in a PDF document titled “Translated Safety Statements”
on the Allied Telesis website at http://www.alliedtelesis.com/support.
To prevent electric shock, do not remove the cover. No userserviceable parts inside. This unit contains hazardous voltages and
should only be opened by a trained and qualified technician. To
avoid the possibility of electric shock, disconnect electric power to
the product before connecting or disconnecting the cables. E1
Do not work on equipment or cables during periods of lightning
activity. E2
Power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord. E3
Class I Equipment. This equipment must be earthed. The power
plug must be connected to a properly wired earth ground socket
outlet. An improperly wired socket outlet could place hazardous
voltages on accessible metal parts. E4
Pluggable Equipment. The socket outlet shall be installed near the
equipment and shall be easily accessible. E5
38
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Caution
Warning
Note
Caution
Warning
Note
Caution
Air vents must not be blocked and must have free access to the
room ambient air for cooling. E6
Operating Temperature. This product is designed for a maximum
ambient temperature of 40° degrees C. E7
All Countries: Install product in accordance with local and National
Electrical Codes. E8
Circuit Overloading: Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of circuits might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern. E21
Mounting of the equipment in the rack should be such that a
hazardous condition is not created due to uneven mechanical
loading. E25
If installed in a closed or multi-unit rack assembly, the operating
ambient temperature of the rack environment may be greater than
the room ambient temperature. Therefore, consideration should be
given to installing the equipment in an environment compatible with
the manufacturer’s maximum rated ambient temperature (Tmra).
E35
Installation of the equipment in a rack should be such that the
amount of air flow required for safe operation of the equipment is not
compromised. E36
39
Chapter 2: Installation
Warning
Reliable earthing of rack-mounted equipment should be maintained.
Particular attention should be given to supply connections other than
direct connections to the branch circuits (e.g., use of power strips).
E37
40
Selecting a Site for the Switch
Observe the following requirements when choosing a site for your switch:
If you plan to install the switch in an equipment rack, verify that the
rack is safely secured and will not tip over. Devices in a rack should
be installed starting at the bottom, with the heavier devices near
the bottom of the rack.
If you are installing the switch on a table, verify that the table is
level and secure.
The power outlet for the switch should be located near the unit and
should be easily accessible.
The site should provide for easy access to the ports on the front of
the switch. This will make it easier for you to connect and
disconnect cables, as well as view the switch’s LEDs.
Air flow around the unit and through its vents on the side and rear
should not be restricted so that the switch can maintain adequate
cooling.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Do not place objects on top of the switch.
Do not expose the switch to moisture or water.
Ensure that the site is a dust-free environment.
You should use dedicated power circuits or power conditioners to
supply reliable electrical power to the network devices.
41
Chapter 2: Installation
Note
Cable Specifications
Table 9 contains the cable specifications for the twisted pair ports.
Table 9. Twisted Pair Cabling and Distances
SpeedType of Cable
Maximum
Operating
Distance
10 MbpsStandard TIA/EIA 568-B-compliant
Category 3 or better shielded or
unshielded cabling with 100 ohm
impedance and a frequency of 16
MHz.
100 MbpsStandard TIA/EIA 568-A-compliant
Category 5 or TIA/EIA 568-Bcompliant Enhanced Category 5
(Cat 5e) shielded or unshielded
cabling with 100 ohm impedance
and a frequency of 100 MHz.
1000 MbpsStandard TIA/EIA 568-A-compliant
Category 5 or TIA/EIA 568-Bcompliant Enhanced Category 5
(Cat 5e) shielded or unshielded
cabling with 100 ohm impedance
and a frequency of 100 MHz.
The twisted pair ports on the switch feature auto-MDI when
operating at 10, 100, or 1000 Mbps. A port is configured as MDI or
MDI-X when it is connected to an end node. Consequently, you can
use a straight-through twisted pair cable when connecting any type
of network device to a port on the switch.
100 m (328 ft)
100 m (328 ft)
100 m (328 ft)
42
Unpacking the Switch
Note
To unpack the switch, perform the following procedure:
1. Remove all of the components from the shipping package.
2. Place the switch on a level, secure surface.
3. In addition to an AT-GS950/10PS, AT-GS950/16PS, or AT-GS950/
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Store the packaging material in a safe location. You must use the
original shipping material if you need to return the unit to Allied
Telesis.
48PS switch, verify that the shipping container includes the following
items shown in Figure 18 on page 44.
43
Chapter 2: Installation
Two equipment rack or
wall brackets
Eight bracket screws
Four wall anchors
Four wall screws
Four rubber feet (for
desktop installation)
One regional AC
power cord
Two or four SFP slot
dust covers (preinstalled).
Figure 18. Shipping Package Contents
44
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Installing the Switch on a Desktop
You may install the switches on a desktop, in a standard 19-inch
equipment rack, or on a wall. To install the switch in a rack, see “Installing
the Switch in an Equipment Rack” on page 46. To install the switch on a
wall, see “Installing the Switch on a Wall” on page 48.
To place the switch on a desktop, perform the following procedure:
1. Remove all equipment from the package and store the packaging
material in a safe place.
2. Turn the switch over and place it on a table.
3. Attach the four rubber feet to the bottom of the switch as shown in
Figure 19.
Figure 19. Attaching the Rubber Feet
4. Turn the switch over again and place it on a flat, secure surface (such
as a desk or table) leaving ample space around the unit for ventilation.
5. Go to “Installing Optional SFP Transceivers” on page 51 or “Cabling
the Switch” on page 54.
45
Chapter 2: Installation
Installing the Switch in an Equipment Rack
To install the switch in a standard 19-inch equipment rack, perform the
following procedure:
1. If the rubber feet are attached to the bottom of the switch, remove
them using a flat-head screwdriver.
2. Attach the two rack mount brackets to the sides of the switch using the
eight bracket screws that come with the unit. There are four possible
positions in which the brackets may be installed.
46
Figure 20. Attaching the Rack-Mount Brackets to the Switch
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Figure 21. Attaching the Rack-Mount Brackets to the Switch (Continued)
3. Mount the switch in a standard 19-inch equipment rack using four
equipment rack screws (not provided with the switch).
Figure 22. Mounting the Switch in an Equipment Rack
4. Go to “Installing Optional SFP Transceivers” on page 51 or “Cabling
the Switch” on page 54.
47
Chapter 2: Installation
Caution
Installing the Switch on a Wall
Only the AT-GS950/10PS and AT-GS950/16PS switches can be installed
on a wall.
The AT-GS950/48PS is too heavy to be safely installed on a wall.
To install the AT-GS950/10PS or AT-GS950/16PS switch on a wall,
perform the following procedure:
1. Turn the switch over and place it on a table.
2. If the rubber feet are attached to the bottom of the switch, remove
them using a flat-head screwdriver.
3. Orient the brackets against the sides of the switch, as shown in Figure
23, and secure them to the unit with the eight brackets screws
included with the switch.
48
Figure 23. Attaching the Brackets to Install the Switch on a Wall
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
4. Have another person hold the switch at the wall location where the
switch is to be installed, while you use a pencil or pen to mark the wall
with the locations of the four holes in the brackets. The switch should
be oriented such that its front faceplate is facing up and is level to the
floor. See Figure 24.
Figure 24. Marking the Screw Hole Locations
5. Install the four plastic anchors included with the switch into the wall, at
the locations marked in the previous step. The anchors require 0.635
mm (0.25 in.) holes.
49
Chapter 2: Installation
6. While another person holds the switch at the wall location, secure it to
the wall using the four wall mounting screws. See Figure 25.
50
Figure 25. Securing the Switch to the Wall
7. Go to “Installing Optional SFP Transceivers” on page 51 or “Cabling
the Switch” on page 54.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Note
Note
Warning
Installing Optional SFP Transceivers
To install an SFP transceiver, perform the following procedure:
The transceiver can be hot-swapped; you do not need to power off
the switch to install a transceiver. However, always remove the
cables before removing the transceiver.
You should always install the transceiver before connecting the fiber
optic cables to it.
1. Remove the transceiver from its shipping container and store the
packaging material in a safe location.
An SFP transceiver can be damaged by static electricity. Be sure to
observe all standard electrostatic discharge (ESD) precautions,
such as wearing an antistatic wrist strap, to avoid damaging the
transceiver.
2. Remove the dust plug from an SFP slot. See Figure 26.
Figure 26. Removing the Dust Plug from an SFP Slot
3. Position the SFP transceiver with the label facing up.
51
Chapter 2: Installation
Note
Note
SFP Transceiver
Handle
4. Slide the transceiver into the SFP slot until it clicks into place. See
Figure 27.
Figure 27. Inserting the SFP
5. Verify that the handle on the transceiver is in the upright position, as
shown in Figure 28. This secures the transceiver and prevents it from
being dislodged from the slot.
52
Figure 28. Positioning the SFP Handle in the Upright Position
6. Repeat Step 2 through Step 5 to install additional SFP transceivers.
SFP transceivers are dust-sensitive. Always keep the plug in the
optical bores when a fiber optic cable is not installed, or when
storing the SFP. When you do remove the plug, keep it for future
use.
Unnecessary removal and insertion of an SFP can lead to
premature failure.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
For information on the cable specifications of the SFP, consult the
documentation shipped with the SFP.
7. Go to “Cabling the Switch” on page 54.
53
Chapter 2: Installation
Cabling the Switch
Observe the following guidelines when connecting twisted pair and fiber
optic cables to the ports on the switch:
The connector on the cable should fit snugly into the port on the
switch. The tab on the connector should lock the connector into
place.
Because the twisted pair ports have auto-MDI/MDI-X, you may use
straight-through twisted pair cable to connect any type of network
device to the switch.
If your network topology contains a loop where two or more
network devices can communicate with each other over more than
one network path, do not connect the network cables that form the
loop until after you activate a spanning tree protocol on the switch.
Data loops can adversely affect network performance.
If you are creating a port trunk, do not connect the cables of the
trunk to the switch until after you have created the trunk in the
switch’s management software. Otherwise, a network loop will
result which can adversely affect network performance.
54
Powering On the Switch
Warning
Note
To power on the switch, perform the following procedure:
1. Plug the power cord into the AC power connector on the back of the
switch, as shown in Figure 29.
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Figure 29. Plugging in the AC Power Cord
2. Plug the other end of the power cord into a wall outlet.
Power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord. E3
Pluggable Equipment. The socket outlet shall be installed near the
equipment and shall be easily accessible. E5
3. Verify that the POWER LED is green. If the LED is OFF, see Chapter
3, “Troubleshooting” on page 57.
The switch is now powered on and ready for network operations. For
information on how to manage the switch, see one of the following
manuals:
AT-S110 Web Interface User’s Guide for the AT-GS950/10PS
Switch
AT-S111 Web Interface User’s Guide for the AT-GS950/48PS
Switch
AT-S112 Web Interface User’s Guide for the AT-GS950/16PS
Switch
55
Chapter 2: Installation
56
Chapter 3
Note
Caution
Troubleshooting
This chapter contains information on how to troubleshoot the switch if a
problem occurs.
For further assistance, please contact Allied Telesis Technical
Support at www.alliedtelesis.com/support.
Problem 1: The POWER LED on the front of the switch is off.
Solutions: The unit is not receiving power. Try the following:
Verify that the power cord is securely connected to the power
source and to the AC connector on the back panel of the switch.
Verify that the power outlet has power by connecting another
device to it.
Try connecting the unit to another power source.
Try a different power cord.
Verify that the voltage from the power source is within the required
levels for your region.
Problem 2: All of the port LEDs are off even though the ports are
connected to active network devices.
Solution: The switch is probably operating in low power mode. To toggle
on the LEDs, press the eco-friendly button on the front panel.
Pressing the eco-friendly button for more than 4 seconds causes the
switch to reboot. The switch does not forward network traffic during
the reboot process. Some network traffic may be lost. Pressing the
eco-friendly button for more than 10 seconds causes the switch to
reset to factory defaults.
Problem 3: A twisted pair port on the switch is connected to a network
device but the port’s LINK/ACT LED is off.
Solutions: The port is unable to establish a link to a network device. Try
the following:
Verify that the network device connected to the twisted pair port is
powered on and is operating properly.
57
Chapter 3: Troubleshooting
Note
Verify that the twisted pair cable is securely connected to the port
on the media converter channel and to the port on the remote
network device.
Verify that the port is connected to the correct twisted pair cable.
This is to eliminate the possibility that the port is connected to the
wrong network device, such as a powered off device.
Try connecting another network device to the twisted pair port with
a different cable. If the twisted pair port is able to establish a link,
then the problem is with the cable or the other network device.
Verify that the twisted pair cable does not exceed 100 meters (328
feet).
Verify that you are using the appropriate category of twisted pair
cable: Category 3 or better for 10 Mbps operation and Category 5
and Category 5E for 100 and 1000 Mbps operation.
A 1000Base connection may require 5 to 10 seconds to establish a
link.
Problem 4: The LINK/ACT LED for an SFP transceiver is off.
Solutions: The fiber optic port on the transceiver is unable to establish a
link to a network device. Try the following:
Verify that the network device connected to the fiber optic port is
operating properly.
Verify that the fiber optic cable is securely connected to the port on
the media converter channel and to the port on the remote network
device.
Check that the SFP module is fully inserted in the slot.
Verify that the operating specifications of the fiber optic ports on
the SFP transceiver and the remote network device are
compatible.
Verify that the correct type of fiber optic cabling is being used.
Verify that the port is connected to the correct fiber optic cable.
This is to eliminate the possibility that the port is connected to the
wrong remote network device, such as a powered off device.
Try connecting another network device to the fiber optic port using
a different cable. If the port is able to establish a link, then the
problem is with the cable or with the other network device.
Use the switch’s management software to verify that the port is
enabled.
If the remote network device is a management device, use its
management firmware to determine whether its port is enabled.
58
AT-GS950/10PS, AT-GS950/16PS, and AT-GS950/48PS Switches Installation Guide
Test the attenuation on the fiber optic cable with a fiber optic tester
to determine whether the optical signal is too weak (sensitivity) or
too strong (maximum input power).
Problem 5: Network performance between a twisted pair port on the
switch and a network device is slow.
Solution: There might be a duplex mode mismatch between the port and
the network device. This occurs when a twisted pair port using AutoNegotiation is connected to a device with a fixed duplex mode of full
duplex. If this is the cause of the problem, adjust the duplex mode of the
port on the network device or on the switch so that both ports are using the
same duplex mode.
Problem 6: A port’s LINK/ACT LED is blinking.
Solutions: The link between the port and the network device is
intermittent. Try the following:
Connect another network device with a different cable to the port. If
the Link LED remains steady on, then the problem is with the
original cable or the network device.
If the problem is with an SFP transceiver, check that the
transceiver is fully inserted in the slot.
59
Chapter 3: Troubleshooting
60
Appendix A
Technical Specifications
Below are the technical specifications for the AT-GS950/10PS,
AT-GS950/16PS and AT-GS950/48PS switches. The specification
categories are as follows:
“Physical Specifications” on page 61
“Environmental Specifications” on page 62
“Power Specifications” on page 62
“PoE Specifications” on page 62
“Safety and Electromagnetic Emissions Certifications” on page 63
“Connectors and Port Pinouts” on page 63
Physical Specifications
Dimensions
Weight
Table 10. Chassis Dimensions
ModelW x D x H mm (in)
AT-GS950/10PS330 mm x 200 mm x 44 mm
(13.0 in x 7.9 in x 1.7 in)
AT-GS950/16PS440 mm x 250 mm x 44 mm
(17.3 in x 9.4 in x 1.7 in)
AT-GS950/48PS440 mm x 430 mm x 44 mm
(17.3 in x 17.0 in x 1.7 in)
Table 11. Chassis Weight
ModelWeight kg (lbs)
AT-GS950/10PS1.90 kg (4.20 lbs)
AT-GS950/16PS3.56 kg (7.85 lbs)
AT-GS950/48PS6.62 kg (14.60 lbs)
61
Appendix A: Technical Specifications
Environmental Specifications
Operating Temperature0° C to 45° C (32° F to 113° F)
Storage Temperature-25° C to 70° C (-13° F to 158° F)
Operating Humidity5% to 90% non-condensing
Storage Humidity5% to 95% non-condensing
Operating Altitude RangeUp to 3,000 m (9,843 ft)
Power Specifications
Input Supply Voltage - 100-240 VAC, 50 - 60 Hz
Table 12. Environmental Specifications
Table 13. Max AC Input Power Specifications
AT-GS950/10PS92.7 W
AT-GS950/16PS228.5 W
AT-GS950/48PS446.0 W
PoE Specifications
The maximum number of ports that the AT-GS950xx/PS switches will
support when only one class of service is required from the powered
devices connected to the PoE ports is shown in Table 14.