NETGEAR GS728TS Smart Switch Manual

350 East Plumeria Drive
San Jose, CA 95134
USA
January 2012
202-10994-01
v1.0
GS728TS, GS728TPS,
GS752TS, and GS752TPS
Smart Switch
Hardware Installation Guide

2|
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
©2012 NETGEAR, Inc. All rights reserved
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated
into any language in any form or by any means without the written permission of NETGEAR, Inc.
Technical Support
Thank you for choosing NETGEAR. To register your product, get the latest product updates, get support online, or
for more information about the topics covered in this manual, visit the Support website at
http://support.netgear.com.
Phone (US & Canada only): 1-888-NETGEAR
Phone (Other Countries): Check the list of phone numbers at
http://support.netgear.com/app/answers/detail/a_id/984
Trademarks
NETGEAR, the NETGEAR logo, ReadyNAS, ProSafe, ProSecure, Smart Wizard, Auto Uplink, X-RAID2, and
NeoTV are trademarks or registered trademarks of NETGEAR, Inc. Microsoft, Windows, Windows NT, and Vista
are registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or
trademarks of their respective holders.
Statement of Conditions
To improve internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes
to the products described in this document without notice. NETGEAR does not assume any liability that may occur
due to the use, or application of, the product(s) or circuit layout(s) described herein.
Revision History
Publication Part Number Version Publish Date Comments
202-10994-01 v1.0 January 2012 First publication

Contents |3
Table of Contents
Chapter 1 Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 2 Physical Description
GS728TS Front-Panel and Back-Panel Configuration . . . . . . . . . . . . . . . 12
GS728TPS Front-Panel and Back-Panel Configuration . . . . . . . . . . . . . . 13
GS752TS Front-Panel and Back-Panel Configuration . . . . . . . . . . . . . . . 15
GS752TPS Front-Panel and Back-Panel Configuration . . . . . . . . . . . . . . 16
LED Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
RJ-45 Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SFP Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
System LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Device Hardware Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
RJ-45 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SFP Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Factory Defaults Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Select Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Chapter 3 Applications
Desktop Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Backbone Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chapter 4 Installation
Step 1: Preparing the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Step 2: Installing the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Installing the Switch on a Flat Surface. . . . . . . . . . . . . . . . . . . . . . . . . . 25
Installing the Switch in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Step 3: Checking the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Step 4: Connecting Devices to the Switch. . . . . . . . . . . . . . . . . . . . . . . . . 26
Step 5: Installing an SFP Transceiver Module . . . . . . . . . . . . . . . . . . . . . 27
Step 6: Installing Device as Stand-alone or Stack Master. . . . . . . . . . . . . 28
Step 7: Applying AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Step 8: Managing the Switch using a Web Browser or the PC Utility . . . . 30

GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
4| Contents
Appendix A Troubleshooting
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Additional Troubleshooting Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . .32
Network Adapter Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Switch Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Auto-Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Appendix B Technical Specifications
Appendix C Notification of Compliance
Index

GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
Contents |5

Chapter 1. Introduction |6
1
1. Introduction
Congratulations on the purchase of your NETGEAR®ProSafeTM GS728TS, GS728TPS,
GS752TS, or GS752TPS Smart Switch! Your Smart Switch is a state-of-the-art,
high-performance, IEEE-compliant network solution designed for users who require a large
number of ports and want the power of Gigabit connectivity to eliminate bottlenecks, boost
performance, and increase productivity. There are either 24 (GS728TS and GS728TPS) or 48
(GS752TS and GS752TPS) twisted-pair ports on the front panel of the switch which support
nonstop 10/100/1000 networks. The front panel also has six SFP ports, 2 of which are combo
ports, 2 are dedicated 1000M ports, and the last 2 ports can be used for 1000M uplink or 2.5
Gbps stacking.
The GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation
Guide describes how to install and power on the Smart Switch. The information in this manual is
intended for readers with intermediate computer and Internet skills.
This chapter serves as an introduction to the Smart Switch and provides the following
information:
• Overview
• Features
• Package Contents

Chapter 1. Introduction |7
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
Overview
The NETGEAR GS728TS, GS728TPS, GS752TS, or GS752TPS Smart Switch provides
either 24 (GS728TS and GS728TPS) or 48 (GS752TS and GS752TPS) twisted-pair ports
that support nonstop 10/100/1000M networks. The switch also has six built-in Small Form
Factor Pluggable (SFP) GBIC slots, 2 of which are combo ports, 2 of which are dedicated
1000M ports, and the last 2 ports can be used for 1000M uplink or 2.5 Gbps stacking.
Using these Gigabit slots, you can create high-speed connections to a server or network
backbone. For example, you can:
• Connect switches to each other with high-speed links
• Link to high-speed servers
• Provide 10/100/1000M copper and 100M/1000M fiber connectivity
• Connect up to six switches in a stack to create a high-port-capacity solution with a single
point of administration
The NETGEAR GS728TS, GS728TPS, GS752TS, or GS752TPS Smart Switch also
provides the benefit of administrative management with a complete package of features for
the observation, configuration, and control of the network. With a Web-based Graphical User
Interface (GUI), the switch’s many capabilities can be viewed and used in a simple and
intuitive manner. The switch’s management features include configuration for port and switch
information, VLAN for traffic control, port trunking for increased bandwidth, and Class of
Service (CoS) for traffic prioritization. These features provide better understanding and
control of the network. Initial discovery of the switch on the network requires the Smart
Control Center program, a utility that runs on a PC.
The NETGEAR GS728TS, GS728TPS, GS752TS, or GS752TPS Smart Switch can be free
standing, stacked with other switches, or rack mounted in a wiring closet or equipment room.
It is IEEE-compliant and offers low latency for high-speed networking. All ports can
automatically negotiate to the highest speed. This capability makes the switch ideal for
environments that have a mix of Ethernet, Fast Ethernet, or Gigabit Ethernet devices. In
addition, all RJ-45 ports operate in half-duplex or full-duplex mode. The maximum segment
length is 328 feet (100 meters) over Category 5 Unshielded Twisted-Pair (UTP) cable.
Features
The following list identifies the key features of the Smart Switch:
• Interfaces:
• GS728TS/GS752TS
• 24/48 x 10/100/1000 Mbps copper ports.
• 2 x Combo ports to support 10/100/1000 Mbps copper ports or 1G/100M optical
module.
• 2 x SFP (slot) to support 1G optical module.

8|Chapter 1. Introduction
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
• 2 x SFP (slot) to support 1G optical module (uplink) or 2.5G stacking (via stacking
cable).
• GS728TPS/GS752TPS
• 24/48 PoE-capable 10/100/1000 Mbps copper ports (8 PoE+ capable)
• 2 x Combo ports to support 10/100/1000 Mbps copper ports or 1G/100M optical
module.
• 2 x SFP (slot) to support 1G optical module.
• 2 x SFP (slot) to support 1G optical module (uplink) or 2.5G stacking (via stacking
cable).
• Stacking ports
• GS728TS/GS728TPS: Port 27 and port 28 can be used as the stacking ports or as
uplink ports.
• GS752TS/GS752TPS: Port 51 and port 52 can be used as the stacking ports or as
uplink ports.
• Six 100/1000Mbps SFP slots and two 2.5Gbps ports for stacking.
• Full NETGEAR Smart Switch functionality.
• Stack will support up to a maximum of 6 switches.
• Mix and match stacking supported on the GS7xxTS/GS7xxTPS family (GS728TS,
GS752TS, GS728TPS and GS752TPS).
• Full compatibility with IEEE standards:
• IEEE 802.3i (10BASE-T)
• IEEE 802.3u (100BASE-TX)
• IEEE 802.3ab (1000BASE-T)
• IEEE 802.3z (1000BASE-x)
• IEEE802.3az (Energy Efficient Ethernet)
• IEEE 802.3x (Full-duplex flow control)
• IEEE802.3af (DTE Power via MDI)
• IEEE802.3at (DTE Power via MDI Enhancements)
• PoE
• GS728TPS: Port 1-8 support both IEEE802.3 at and af, and port 9-24 support
IEEE802.3af.
• GS752TPS: Port 1-8 support both IEEE802.3 at and af, and port 9-48 support
IEEE802.3af.
• Autosensing and auto-negotiating capabilities for all ports.
• Auto Uplink™ on all ports to make the right connection.
• Automatic address learning function to build the packet-forwarding information table. The
table contains up to 16K Media Access Control (MAC) addresses.
• GS7xxTS Model LEDs: Port LED, Power and Status LED, FAN status LED and Master
LED.

Chapter 1. Introduction |9
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
• GS7xxTPS model LEDs: Power and Status LED, FAN status LED, Master LED, LED
mode LED and Max PoE LED.
• Stack ID LED to display stack member ID (1-6).
• Store-and-Forward transmission to remove bad packets from the network.
• Full-duplex IEEE 802.3x pause frame flow control.
• Active flow control to minimize packet loss and frame drops.
• Half-duplex backpressure control.
• Per port LEDs and power LED.
• Internal open frame power supply.
• Standard NETGEAR 7xx series chassis.
• NETGEAR Green product series power-saving features:
• Automatic power consumption adjustment based on the RJ-45 cable length.
• Per port automatic power down when the port link is down.
• IEEE802.3az, EEE (Energy Efficient Ethernet) compliance.
Stacking
A stack can be controlled and managed from a single unit called the master unit. Any other
unit member of the stack is named stack slave member.
In particular, firmware can be downloaded from the stack master to the other units in the
stack.
A unit serving as Stack Master runs the fully operational software of a switch. In addition, it
runs the master part of the Distributed Switching Application that configures and manages all
other units in the stack. Generally, the master operates the remote Slave’s low-level drivers,
through the Distributed Switching application part that is running in the context of the Slave.
During the Stacking setup, the switches will auto-select one as the Stacking Master. All other
devices are named as slave stack members, and assigned a unique Unit ID. One of the slave
units is designated as the backup master. The backup master acts as a slave stack master,
but can become a stack master in the event of failure of the stack master. In the default
configuration, the master and backup master are assigned unit IDs of 1 and 2, respectively.
The administrator can use the Web interface to configure different ID assignments. The Stack
Master provides a Single point of control and management as well as a single interface in
which to control and manage the stack.
Switch software is downloaded separately for each stack member. However, all units in the
stack must be running the same software version.
A stack unit can operate in one of the following Modes:
• Standalone unit runs as a general switch. The standalone unit does not run the stacking
application until it is connected to a stack.

10 |Chapter 1. Introduction
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
• The Master unit manages the entire stack, and is responsible for the entire stack
configuration. All protocols run in the context of the Master unit. It updates and
synchronizes the Backup master.
• A master-backup unit runs as a slave unit as described above, and in addition, it
continuously monitors the existence and operation of the stack master. If the master unit
fails, the master-backup unit will assume the stack-master role. (“Switchover”).
• A slave unit only runs a slave version of the Distributed Switching Algorithm, which allows
the applications running on the Master unit’s CPU to control and manage the resources of
the slave unit.
Package Contents
Figure 1 shows the package contents of the GS728TS, GS728TPS, GS752TS, or
GS752TPS Smart Switch (the GS752TS is shown in this example).
Installation Guide
Rack
mount kit
Rubber
footpads
AC
power
cord
Smart Switch
Resource CD
Figure 1. Package Contents (GS752TS Shown)
Verify that the package contains the following:
• GS728TS, GS728TPS, GS752TS, or GS752TPS Smart Switch
• Rubber footpads for tabletop installation
• Rackmounting kits
• Power cord
• Installation guide

Chapter 1. Introduction |11
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
• Smart Switch Resource CD with NETGEAR Smart Control Center and User’s Manual
If any item is missing or damaged, contact the place of purchase immediately.

Chapter 2. Physical Description |12
2
2. Physical Description
This chapter describes the GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch
hardware features. Topics include:
• GS728TS Front-Panel and Back-Panel Configuration
• GS728TPS Front-Panel and Back-Panel Configuration
• GS752TS Front-Panel and Back-Panel Configuration
• GS752TPS Front-Panel and Back-Panel Configuration
• LED Designations
• Device Hardware Interfaces
GS728TS Front-Panel and Back-Panel Configuration
The GS728TS Smart Switch has 24 10/100/1000 Mbps copper ports and 6 SFP fiber ports, 2
of which are combo ports. Up to two SFP ports (port 27 and 28) at a time can be used as
stacking ports.
Each port is capable of sensing the line speed and negotiating the duplex mode with the link
partner automatically.
Figure 2 illustrates the front panel of the NETGEAR GS728TS Smart Switch.
Power, Fan, and
Link/Speed/ACT LEDs
10/100/1000M Ethernet Ports
SFP Ports
Reset Button
Stack Master LEDs
Factory
Defaults Button
Stack ID LED
Combo and Dedicated
Figure 2. GS728TS Front Panel

Chapter 2. Physical Description |13
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
The front panel contains the following:
• 24 RJ-45 connectors for 10/100/1000 Mbps autosensing Gigabit Ethernet switching ports.
• 2 combo ports (port 23 and 24) to support 10/100/1000 Mbps copper or 100M/1G optical
module.
• 2 dedicated SFP ports (port 25 and 26) to support 1G optical module.
• 2 dedicated SFP ports (port 27 and 28) to support 1G optical module (uplink) or 2.5G
stacking (via stacking cable).
• Up to two of these ports (ports 27 and 28) can alternatively be used as stacking ports
• Reset button to restart the device.
• Recessed default reset button to restore the device back to the factory defaults.
• Link, Speed, and Activity LEDs for each port.
• Power, Fan Status, Stack Master, and Stack ID LEDs.
Figure 3 illustrates the NETGEAR GS728TS Smart Switch back panel.
Power Connector
Figure 3. GS728TS Back Panel
The back panel contains a power connector.
GS728TPS Front-Panel and Back-Panel Configuration
The GS728TPS Smart Switch has 24 10/100/1000 Mbps PoE capable copper ports and 6
SFP fiber ports, 2 of which are combo ports. Up to two SFP ports (port 27 and 28) at a time
can be used as stacking ports.
Each port is capable of sensing the line speed and negotiating the duplex mode with the link
partner automatically.
Figure 4 illustrates the front panel of the NETGEAR GS728TPS Smart Switch.

Power, Fan, LED mode, PoE Max,
Link/Speed/ACT LEDs
10/100/1000M PoE capable Ethernet Ports
Combo and Dedicated
SFP Ports
Reset Button
and Stack Master LEDs
Factory
Defaults Button
Stack ID LED
Select Button
14 |Chapter 2. Physical Description
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
Figure 4. GS728TPS Front Panel
The front panel contains the following:
• 24 RJ-45 connectors for 10/100/1000 Mbps autosensing Gigabit Ethernet switching ports.
• 2 Combo ports (port 23 and 24) to support 10/100/1000 Mbps copper or 100M/1G optical
module.
• 2 dedicated SFP ports (port 25 and 26) to support 1G optical module.
• 2 dedicated SFP ports (port 27 and 28) to support 1G optical module (uplink) or 2.5G
stacking (via stacking cable).
• Up to two of these ports (ports 27 and 28) can alternatively be used as stacking ports
• Reset button to restart the device.
• Select button to change the working mode of the port LEDs with either PoE Mode or
Ethernet Mode.
• Recessed default reset button to restore the device back to the factory defaults.
• Link, Speed, and Activity LEDs for each port.
• Power, Fan Status, Stack Master, LED mode, PoE Max, and Stack ID LEDs.
Figure 5 illustrates the NETGEAR GS728TPS Smart Switch back panel.
Power Connector
Figure 5. GS728TPS Back Panel
The back panel contains a power connector.

Chapter 2. Physical Description |15
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
GS752TS Front-Panel and Back-Panel Configuration
The GS752TS Smart Switch has 48 10/100/1000 Mbps copper ports and 6 SFP fiber ports, 2
of which are combo ports. Up to two SFP ports (port 51 and 52) at a time can be used as
stacking ports.
Each port is capable of sensing the line speed and negotiating the duplex mode with the link
partner automatically.
Figure 6 illustrates the front panel of the NETGEAR GS752TS Smart Switch.
Power, Fan, and
Link/Speed/ACT LEDs
10/100/1000M Ethernet Ports
Combo and Dedicated
SFP Ports
Reset Button
Stack Master LEDs
Factory
Defaults Button
Stack ID LED
Figure 6. GS752TS Front Panel
The front panel contains the following:
• 48 RJ-45 connectors for 10/100/1000 Mbps autosensing Gigabit Ethernet switching ports
• 2 dedicated SFP ports (port 49 and 50) to support 1G optical module
• 2 dedicated SFP ports (port 51 and 52) to support 1G optical module (uplink) or 2.5G
stacking (via stacking cable).
• Up to two of these ports (ports 51 and 52) can alternatively be used as stacking ports
• Reset button to restart the device
• Recessed default reset button to restore the device back to the factory defaults
• Link, Speed, and Activity LEDs for each port
• Power, Fan Status, Stack Master, and Stack ID LEDs
Figure 7 illustrates the NETGEAR GS752TS Smart Switch back panel.
Power Connector
Figure 7. GS752TS Back Panel
The back panel contains a power connector.

16 |Chapter 2. Physical Description
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
GS752TPS Front-Panel and Back-Panel Configuration
The GS752TPS Smart Switch has 48 10/100/1000 Mbps PoE capable copper ports and 6
SFP fiber ports, 2 of which are combo ports. Up to two SFP ports (port 51 and 52) at a time
can be used as stacking ports.
Each port is capable of sensing the line speed and negotiating the duplex mode with the link
partner automatically.
Figure 8 illustrates the front panel of the NETGEAR GS752TPS Smart Switch.
Power, Fan, LED mode, PoE Max,
Link/Speed/ACT LEDs
10/100/1000M PoE capable Ethernet Ports
Combo and Dedicated
SFP Ports
Reset Button
and Stack Master LEDs
Factory
Defaults Button
Stack ID LED
Select Button
Figure 8. GS752TPS Front Panel
The front panel contains the following:
• 48 RJ-45 connectors for 10/100/1000 Mbps autosensing Gigabit Ethernet switching ports.
• 2 Combo ports (port 47 and 48) to support 10/100/1000 Mbps copper or 100M/1G optical
module.
• 2 dedicated SFP ports (port 49 and 50) to support 1G optical module.
• 2 dedicated SFP ports (port 51 and 52) to support 1G optical module (uplink) or 2.5G
stacking (via stacking cable).
• Up to two of these ports (ports 51 and 52) can alternatively be used as stacking ports
• Reset button to restart the device.
• Select button to change the working mode of the port LEDs with either PoE Mode or
Ethernet Mode.
• Recessed default reset button to restore the device back to the factory defaults
• Link, Speed, and Activity LEDs for each port.
• Power, Fan Status, Stack Master, LED mode, PoE Max, and Stack ID LEDs.
Figure 9 illustrates the NETGEAR GS752TPS Smart Switch back panel.

Power Connector
Chapter 2. Physical Description |17
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
Figure 9. GS752TPS Back Panel
The back panel contains a power connector.
LED Designations
RJ-45 Port LEDs
The following table describes the RJ-45 port LED designations. There is one LED for each
RJ-45 port.
LED Designation
Ethernet Mode: SPD/Link/ACT
LED
• Off—No link established.
• Solid Green—A valid 1000 Mbps link is established.
• Blinking Green—The port is transmitting or receiving packets at
1000 Mbps.
• Solid Yellow—A valid 10/100 Mbps link is established.
• Blinking Yellow—The port is transmitting or receiving packets
at 10/100 Mbps.
PoE Mode: PoE Status LED • Off—No PoE powered device (PD) is connected.
• Solid Green—The PoE powered device (PD) is connected and the port
is supplying power successfully.
• Solid Yellow—Indicates one of the following failures resulted in
stopping power to that port:
- Short circuit on the PoE power circuit.
- PoE power demand exceeds the power available.
- PoE current exceeds the PD's classification.
- Out of proper voltage band (44 ~ 57 VDC for af, 50~57 VDC for at).
Note: If the port media is changed to fiber, the Ethernet LED will change to
the OFF status.

18 |Chapter 2. Physical Description
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
SFP Port LEDs
The following table describes the dedicated SFP port LED designations. Each SFP port has
its own indication LED.
LED Designation
SFP Mode for 2 Combo Ports:
SPD/Link/ACT LED
• Off—No SFP module link is established.
• Solid Green— A valid 1000Mbps SFP module link is established.
• Blinking Green—The port is transmitting or receiving packets at
1000Mbps.
• Solid Yellow—A valid 100Mbps SFP module link is established.
• Blinking Yellow—The port is transmitting or receiving packets
at 100Mbps.
SFP Mode for last 4 SFP Ports:
SPD/Link/ACT LED
• Off—No SFP module link is established on the port.
• Solid Green—A valid 1000/2500Mbps SFP module link is established
on the port.
• Blinking Green—Packets transmission or reception is occurring on the
port at 1000/2500Mbps.
Note: If the port media change to copper, the SFP port LED will change to
the OFF status.
System LEDs
The following table describes the system LED designations.
LED Designation
Power • Solid Green—Device is powered on, run-time code is up and running.
• Solid Yellow—Device is booting up.
• Off—Power is not supplied to the device
Fan • Solid Yellow—Fan has experienced a fail.
• Off—Fan is operating normally.
Stack Master LED • Solid Green—The switch acts as a master unit in a stack of GS700TS series
switches.
• Off—The switch acts as a slave in a stack of GS700TS series switches, or the
stack is operating in standalone mode.
Stack ID Displays the stack ID, from 1 to 6.

Chapter 2. Physical Description |19
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
Device Hardware Interfaces
RJ-45 Ports
RJ-45 ports are autosensing ports. When inserting a cable into an RJ-45 port, the switch
automatically detects the maximum speed (10, 100, or 1000 Mbps) and duplex mode
(half-duplex or full-duplex) of the attached device. All ports support only unshielded
twisted-pair (UTP) cable terminated with an 8-pin RJ-45 plug.
To simplify the procedure for attaching devices, all RJ-45 ports support Auto Uplink. This
technology allows attaching devices to the RJ-45 ports with either straight-through or
crossover cables. When inserting a cable into the switch’s RJ-45 port, the switch
automatically:
• Senses whether the cable is a straight-through or crossover cable.
• Determines whether the link to the attached device requires a “normal” connection (such
as when connecting the port to a PC) or an “uplink” connection (such as when connecting
the port to a router, switch, or hub).
• Configures the RJ-45 port to enable communications with the attached device, without
requiring user intervention. In this way, the Auto Uplink technology compensates for
setting uplink connections, while eliminating concern about whether to use crossover or
straight-through cables when attaching devices.
SFP Ports
To enable you to have fiber connections on your network, there are 6 SFP ports that
accommodate standard 100M or 1000M transceiver modules, which are sold separately.
• 2 combo ports to support 10/100/1000 Mbps copper or 100M/1G optical module.
• 2 dedicated SFP ports to support 1G optical module.
• 2 dedicated SFP ports to support 1G optical module (uplink) or 2.5G stacking (via
stacking cable).
The last two SFP ports can alternatively be used to connect the switch with a 2.5G direct
attach cable to a stack. Up to two ports (ports 27 and 28 or 51 and 52) can be used at a time
as stacking ports.
Max PoE LED • Solid Green—Less than 7W of PoE power is available.
• Solid Yellow—The PoE MAX LED was active in the previous two minutes.
• Off—There is at least 7W of PoE power available for another device.
LED Mode LED • Solid Green—The Port LED is in Ethernet Mode
• Solid Yellow—The Port LED is in PoE Mode.
LED Designation

20 |Chapter 2. Physical Description
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide
Note: Direct attach cable AGC761 (2.5G) is recommended to be used as a
stacking cable. The AGC761 cable is sold separately.
Reset Button
The Smart Switch has a Reset button on the front panel to allow you to manually reboot the
switch. This action is equivalent to powering the unit off and back on. The last saved
configuration is loaded into the switch as it resets. To operate the Reset button, insert a
device such as a paper clip into the opening to press the recessed button. The front-panel
LEDs should extinguish and light again as the switch performs its Power On Self Test
(POST).
Factory Defaults Button
The Smart Switch has a Factory Defaults button on the front panel so that you can remove
the current configuration and return the device to its factory settings. When you enable the
Factory Defaults button, all settings including the password, VLAN settings, and port
configurations are removed. To operate the Factory Defaults button, insert a device such as a
paper clip into the opening to press the recessed button for over two seconds.
Select Button
The Smart Switch GS728TP and GS752TP have a LED Mode Select button on the front
panel so that you can change the LED mode of the ports between Ethernet and PoE status.
You need to press the button for more than 1 second to change the LED mode.