Interlogix NS3500-24T-4C User manual

NS3500-24T-4C Managed
Switch User Manual
P/N 1073386-EN • REV A • ISS 08FEB18

Copyright
©
2018 United Technologies Corporation.
Interlogix is part of UTC
Climate, Controls & Security, a unit of United Technologies
Corporation
. All rights reserved.
Trademarks and patents
Trade names used in this document may be trademarks or registered trademarks of the
manufacturers or vendors of the respective products.
Manufacturer
Interlogix
2955 Red Hill Avenue, Costa Mesa, CA 92626
-5923, USA
Authorized EU manufacturing representative:
UTC Fire & Security B.V.
Kelvinstraat 7, 6003 DH Weert, The Netherlands
Version
This document applies to
NS3500-24T-4C.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received,
including interference that may cause undesired
operation.
FCC compliance
Class A:
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide
reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction
manual,
may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
Canada
This Class A
digital apparatus complies with CAN ICES-003 (A)/NMB-3 (A).
Cet appareil numérique de la classe A est conforme à la norme CAN ICES
-003
(A)/NMB
-3 (A).
ACMA compliance
Notice!
This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
Certification
EU directives
This product and
- if applicable - the supplied accessories too are marked with "CE" and
comply therefore with the applicable
harmonized European standards listed under the
EMC Directive 2014/30/EU, the RoHS Directive 2011/65/EU.
2012/19
/EU (WEEE directive): Products marked with this symbol cannot be disposed of
as unsorted municipal waste in the European Union. For proper
recycling, return this
product to your local supplier upon the purchase of equivalent new equipment, or
dispose of it at designated collection points. For more information see:
www.recyclethis.info.
Product warnings and
disclaimers
THESE PRODUCTS ARE
INTENDED FOR SALE TO AND INSTALLATION BY
QUALIFIED PROFESSIONALS. UTC FIRE & SECURITY CANNOT PROVIDE ANY
ASSURANCE THAT ANY PERSON OR ENTITY BUYING ITS PRODUCTS,
INCLUDING ANY “AUTHORIZED DEALER” OR “AUTHORIZED RESELLER”, IS
PROPERLY TRAINED OR EXPERIENCED
TO CORRECTLY INSTALL FIRE AND
SECURITY RELATED PRODUCTS
.
For more information on warranty disclaimers and product safety information, please
check
www.firesecurityproducts.com/policy/product-warning/ or scan the following code:
Contact information and
manuals
For contact information go to:
www.interlogix.com or www.firesecurityproducts.com.
To get translations for this and other product manuals go to:
www.firesecurityproducts.com
.

Content
Important information 3
Chapter 1 Introduction 4
Package contents 4
Product description 5
Product features 8
Product specifications 11
Chapter 2 Installation 14
Hardware description 14
Chapter 3 Switch management 22
Requirements 22
Management access overview 22
Administration console 23
Web management 25
SNMP-based network management 25
Smart discovery utility 26
Chapter 4 Web configuration 28
Main web page 29
System 30
DHCP server 57
UDLD 68
Simple Network Management Protocol (SNMP) 70
Port management 82
Link aggregation 91
VLAN 99
Spanning Tree Protocol (STP) 126
Multicast 143
Quality of Service (QoS) 168
Access Control Lists (ACL) 191
Authentication 204
Security 239
Address table 254
LLDP 260
Network diagnostics 274
Loop protection 278
RMON 280
Chapter 5 Switch operation 290
Address table 290
Learning 290
Forwarding and filtering 290
NS3500-24T-4C Managed Switch User Manual 1

Store-and-forward 290
Auto-negotiation 291
Chapter 6 Troubleshooting 292
Appendix A Networking connection 293
Glossary 295
2 NS3500-24T-4C Managed Switch User Manual

Important information
Limitation of liability
To the maximum extent permitted by applicable law, in no event will UTCFS be liable
for any lost profits or business opportunities, loss of use, business interruption, loss of
data, or any other indirect, special, incidental, or consequential damages under any
theory of liability, whether based in contract, tort, negligence, product liability, or
otherwise. Because some jurisdictions do not allow the exclusion or limitation of liability
for consequential or incidental damages the preceding limitation may not apply to you.
In any event the total liability of UTCFS shall not exceed the purchase price of the
product. The foregoing limitation will apply to the maximum extent permitted by
applicable law, regardless of whether UTCFS has been advised of the possibility of
such damages and regardless of whether any remedy fails of its essential purpose.
Installation in accordance with this manual, applicable codes, and the instructions of the
authority having jurisdiction is mandatory.
While every precaution has been taken during the preparation of this manual to ensure
the accuracy of its contents, UTCFS assumes no responsibility for errors or omissions.
Advisory messages
Advisory messages alert you to conditions or practices that can cause unwanted
results. The advisory messages used in this document are shown and described below.
WARNING: Warning messages advise you of hazards that could result in injury or loss
of life. They tell you which actions to take or to avoid in order to prevent the injury or
loss of life.
Caution: Caution messages advise you of possible equipment damage. They tell you
which actions to take or to avoid in order to prevent damage.
Note: Note messages advise you of the possible loss of time or effort. They describe
how to avoid the loss. Notes are also used to point out important information that you
should read.
NS3500-24T-4C Managed Switch User Manual 3

Chapter 1
Introduction
The IFS L2+ 24-port 10/100/1000Mbps with four ports shared SFP managed gigabit
switch comes with the multi-port gigabit ethernet switch, SFP fiber optic connectibility,
and robust layer 2 features. The description of this model is as follows:
L2+ 24-port 10/100/1000Mbps
+ 4-port shared SFP managed gigabit switch
Unless specified, the term “managed switch” mentioned in this user manual refers to
the NS3500-24T-4C.
Package contents
Open the box of the managed switch and carefully unpack it. The box should contain
the following items:
The managed switch × 1
DB9 RS232 cable × 1
Rubber feet × 4
Rack mount accessory kit × 1
Power cord × 1
SFP dust-proof cap × 4
If any of these are missing or damaged, contact your dealer immediately. If possible,
retain the carton including the original packing materials for repacking the product in
case there is a need to return it to us for repair.
Note: User manuals and install guides are available for download from
www.interlogix.com.
4 NS3500-24T-4C Managed Switch User Manual

Chapter 1: Introduction
Product description
Cost-effective IPv6 managed Gigabit switch solution for enterprises
NS3500-24T-4C is a Layer 2+ managed Gigabit Switch that features 24-Port
10/100/1000BASE-T with 4-Port Shared 100/1000Base-X SFP and supports static
Layer 3 routing for enterprise-level network. The abundant L2 / L4 switching engine
offered by the NS3500-24T-4C performs effective data traffic control for enterprises and
VoIP service providers, video streaming, and multicast applications. Providing user-
friendly but advanced IPv6 / IPv4 management interfaces, it is well suited for backbone
and workgroup network applications by providing affordability, high performance, and
stable transmission quality.
Environment-friendly, variable fan design for silent operation
The managed switch features a 19-inch metal housing, no noise design, and an
effective ventilation system.It is able to operate reliably, stably, and quietly in any
environment without affecting performance.
Solution for IPv6 networking
With the IPv6/IPv4 dual stack and other management functions with user-friendly
interfaces, the NS3500-24T-4C is the best choice for IP surveillance, VoIP, and
wireless service providers to deploy the IPv6 network. More importantly, they help
SMBs upgrade their network infrastructures to the IPv6 era without any monetary
investment.
IPv4/IPv6 VLAN routing for secure and flexible management
To help customers stay on top of their businesses, the managed switch not only
provides ultra high transmission performance and excellent Layer 2 technologies, but
also a IPv4/IPv6 VLAN routing feature that allows cross over of different VLANs and
NS3500-24T-4C Managed Switch User Manual 5

Chapter 1: Introduction
different IP addresses for the purpose of having a highly secured, flexible management
and simpler networking application.
Robust Layer 2 feature
The managed switch can be programmed for advanced switch management functions
such as dynamic port link aggregation, Q-in-Q VLAN, private VLAN, Multiple Spanning
Tree Protocol (MSTP), Layer 2 to Layer 4 QoS, bandwidth control, and IGMP / MLD
snooping. Via aggregation of supporting ports, the managed switch allows the
operation of a high-speed trunk combining multiple ports. It consists of a maximum of
14 trunk groups with four ports for each group, and also supports fail-over.
Powerful security
The managed switch offers a comprehensive Layer 2 to Layer 4 Access Control List
(ACL) for enforcing security to the edge. It can be used to restrict network access by
denying packets based on source and destination IP address, TCP/UDP ports, or
defined typical network applications. Its protection mechanism also comprises 802.1x
port-based and MAC-based user and device authentication. With the private VLAN
function, communication between edge ports can be prevented to ensure user privacy.
Enhanced security and traffic control
The managed switch also provides DHCP Snooping, IP Source Guard, and Dynamic
ARP Inspection functions to prevent IP snooping from attack and discard ARP packets
with invalid MAC addresses. The network administrator can now construct highly-
secure corporate networks using considerably less time and effort than before.
User-friendly secure management
For efficient management, the managed switch is equipped with console, web, and
SNMP management interfaces. With the built-in web-based management interface, the
managed switch offers an easy-to-use, platform-independent management and
configuration facility. The managed switch supports standard Simple Network
Management Protocol (SNMP) and can be managed by any management software
based on the standard SNMP v1 or v2 protocol. For reducing product learning time, the
managed switch offers Cisco-like command via Telnet or console port, and the
customer doesn’t need to learn new commands from these switches. Moreover, the
managed switch offers secure management remotely by supporting SSH, SSL, and
SNMP v3 connections where the packet content can be encrypted at each session.
6 NS3500-24T-4C Managed Switch User Manual

Chapter 1: Introduction
Intelligent SFP diagnostic mechanism
The managed switch series supports a SFP-DDM (Digital Diagnostic Monitor) function
that can easily monitor real-time parameters of the SFP and SFP+ transceivers, such
as optical output power, optical input power, temperature, laser bias current, and
transceiver supply voltage.
NS3500-24T-4C Managed Switch User Manual 7

Chapter 1: Introduction
Applications
Layer 2+ VLAN static routing application
The managed switch features a built-in, robust IPv4/IPv6 Layer 3 traffic static routing
protocol to ensure reliable routing between VLANs and network segments. The routing
protocols can be applied by VLAN interface with up to 128 routing entries.
Multiple Spanning Tree Protocol for SMBs and workgroups
The managed switch features strong, rapid self-recovery capability to prevent
interruptions and external intrusions. It incorporates Multiple Spanning Tree Protocol
(802.1s MSTP) into the customer’s automation network to enhance system reliability
and uptime. The managed switch can easily help enterprises with the available network
infrastructure to build wireless AP, IP camera, and VoIP.
Product features
• 24-port 10/100/1000BASE-T gigabit Ethernet RJ45.
• Four 100/1000BASE-X SFP slots, shared with port 21 to port 24 compatible with
100Base-FX SFP.
• RS-232 DB9 console interface for basic switch management and setup.
Layer 2 features
• Prevents packet loss with back pressure (half-duplex) and IEEE 802.3x pause
frame flow control (full-duplex).
• High performance of Store-and-Forward architecture and runt/CRC filtering
eliminates erroneous packets to optimize the network bandwidth.
Storm control support:
• Broadcast / Multicast / Unknown-Unicast
Supports VLAN
• IEEE 802.1Q tagged VLAN
• Provider Bridging (VLAN Q-in-Q) support (IEEE 802.1ad)
• Private VLAN Edge (PVE)
• Protocol-based VLAN
• MAC-based VLAN
• Up to 255 VLANs groups, out of 4095 VLAN IDs
• IP Subnet-based VLAN
• Voice VLAN
• Management VLAN
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Chapter 1: Introduction
Supports STP
• STP, IEEE 802.1D Spanning Tree Protocol
• RSTP, IEEE 802.1w Rapid Spanning Tree Protocol
• MSTP, IEEE 802.1s Multiple Spanning Tree Protocol, spanning tree by VLAN
• STP BPDU Guard and BPDU Filtering
Supports link aggregation
• IEEE 802.3ad Link Aggregation Control Protocol (LACP)
• Cisco ether-channel (Static Trunk)
• Maximum 12 trunk groups, up to eight ports per trunk group
• Up to 16 Gbps bandwidth (full duplex mode).
Provides port mirror (many-to-1)
Port mirroring to monitor the incoming or outgoing traffic on a particular port
Loop protection to avoid broadcast loops
Layer 3 IP routing features
• Supports a maximum of 32 software static routes and route summarization.
Quality of Service
• Ingress shaper and egress rate limit per port bandwidth control
• Eight priority queues on all switch ports
• Traffic classification:
- IEEE 802.1p CoS
- TOS / DSCP / IP Precedence of IPv4/IPv6 packets
- IP TCP/UDP port number
- Typical network application
• Strict priority and Weighted Round Robin (WRR) CoS policies
• Traffic-policing policies on the switch port
• DSCP remarking
Multicast
• Supports IGMP snooping v1, v2, and v3 for IPv4 multicasting networks
• Supports MLD snooping v1 and v2 for IPv6 multicasting networks
• Querier mode support
• IGMP snooping port filtering
• MLD snooping port filtering
NS3500-24T-4C Managed Switch User Manual 9

Chapter 1: Introduction
• Multicast VLAN Registration (MVR) support
Security
• Authentication
−IEEE 802.1x Port-Based / MAC-Based network access authentication
−Built-in RADIUS client to co-operate with the RADIUS servers
−TACACS+ login users access authentication
−RADIUS / TACACS+ users access authentication
• Access Control List (ACL)
−IPv4 / IPv6 IP-based ACL
−MAC-based ACL
• Source MAC / IP address binding
• Port security for source MAC address entries filtering
• DHCP snooping to filter distrusted DHCP messages
• Dynamic ARP inspection discards ARP packets with invalid MAC addresses to IP
address binding
• IP source guard prevents IP spoofing attacks
• IP address access management to prevent unauthorized intruder
Management
• IPv4 and IPv6 dual stack management
• Switch management interfaces:
- Console / Telnet Command Line Interface
- Web switch management
- SNMP v1, v2c, and v3 switch management
- SSH / SSL secure access
• User privilege levels control
• System maintenance
- Firmware upload/download via HTTP / TFTP
- Configuration upload / download through the web interface
- Dual images
- Reset button for system reboot or reset to factory default
- Built-in Trivial File Transfer Protocol (TFTP) client
• Four RMON groups (history, statistics, alarms, and events)
• IPv6 IP address / NTP / DNS management and ICMPv6
• BOOTP and DHCP for IP address assignment
10 NS3500-24T-4C Managed Switch User Manual

Chapter 1: Introduction
• DHCP relay
• DHCP Option 82
• NTP (Network Time Protocol)
• Link Layer Discovery Protocol (LLDP) and LLDP-MED
• Cable diagnostic technology provides the mechanism to detect and report potential
cabling issues
• Smart discovery utility for deploy management
Product specifications
Hardware Specification
s
Copper
Ports
24
10/ 100/1000BASE-T RJ45 Auto-MDI/MDI-X ports
SFP
+ Slots
Four
1000BASE-SX/LX/BX SFP interfaces, shared with port 21 to port 24
Supports
100/1000 Mbps dual mode and DDM
Console Port
1 x RS
-232 DB9 serial port (115200, 8, N, 1)
Switch Architecture
Store
-and-Forward
Switch
Fabric
48
Gbps / non-blocking
Throughput
35.7
Mpps @ 64 bytes
Address Table
8K
entries, automatic source address learning and aging
Share
d Data Buffer
1392
kilobytes
Flow Control
IEEE 802.3x
pause frame for full-duplex
Back pressure for
half-duplex
Jumbo Frame
9
K bytes
Reset Button
< 5 seconds: System reboot
>
5 seconds: Factory Default
LED
Power
: PWR Alert (Green)
Ethernet Interfaces (Port
-1 to Port-24): 1000 LNK/ACT (Green),
10/100 LNK/ACT (
Orange)
Dimensions (W x D x H)
440 x 200 x 445
mm, 1U high
Weight
2.74
kg
Power Consumption
Max. 2
0.3 W / 69365 BTU
Power Requirement
AC
100~240 V, 50/60 Hz, 0.4 A
Layer 2
Management Functions
Port
Configuration
Po
rt disable / enable
Auto
-negotiation 10/100/1000Mbps full and half duplex mode selection
Flow
control disable / enable
NS3500-24T-4C Managed Switch User Manual 11

Chapter 1: Introduction
Port Status
Display each port’s
speed duplex mode, link status, flow control status, auto-
negotiation status, trunk
status
Port Mirroring
TX / RX / both
Many
-to-1 monitor
VLAN
802.1Q tagged
-based VLAN
Q
-in-Q tunneling
Private VLAN
Edge (PVE)
MAC
-based VLAN
Protocol
-based VLAN
Voice
VLAN
IP Subnet
-based VLAN
MVR (Multicast VLAN Registration)
U
p to 255 VLAN groups, out of 4095 VLAN IDs
Link Aggregation
IEEE 802.3ad LACP / Static Trunk
12 groups with eight
ports per trunk
Spanning Tree Protocol
IEEE 802.1D Spanning Tree Protocol
(STP)
IEEE 802.1w Rapid Spanning Tree Protocol
(RSTP)
IEEE 802.1s Multiple Spanning Tree Protocol
(MSTP)
QoS
Traffic classification based,
strict priority and WRR
8
-level priority for switching
–
Port Number
–
802.1p priority
–
802.1Q VLAN tag
–
DSCP/ToS field in IP packet
IGMP Snooping
IGMP (v1/v2
/v3) snooping, up to 255 multicast groups
IGMP
querier mode support
MLD Snooping
MLD (v1/v2)
snooping, up to 255 multicast groups
MLD
querier mode support
Access Control List
IP
-based ACL / MAC-based ACL
Up to
256 entries
Bandwidth Control
Per port bandwidth control
–
Ingress: 100 Kbps~1000 Mbps
–
Egress: 100 Kbps~1000 Mbps
Layer 3 Functions
IP Interfaces
Max
imum of eight VLAN interfaces
Routing Table
Max
imum of 32 routing entries
Routing Protocols
IPv4
software static routing
IPv6 software
static routing
Management
Basic Management Interfaces
Consol
e, Telnet, web browser, SNMP v1, v2c
Secure Management
SSH, SSL, SNMP v3
12 NS3500-24T-4C Managed Switch User Manual

Chapter 1: Introduction
Interfaces
SNMP MIBs
RFC
-1213 MIB-II
RFC
-1493 Bridge MIB
RFC
-1643 Ethernet MIB
RFC
-2863 Interface MIB
RFC
-2665 Ether-Like MIB
RFC
-2819 RMON MIB (Group 1, 2, 3 and 9)
RFC
-2737 Entity MIB
Standards Conformance
Regulation Compliance
FCC Part 15 Class A, CE
Standards Compliance
IEEE
802.3 10BASE-T
IEEE
802.3u 100BASE-TX/100BASE-FX
IEEE
802.3z Gigabit SX/LX
IEE
E 802.3ab Gigabit 1000T
IEEE 802.3x flow control and back pressure
IEEE 802.3ad port trunk with LACP
IEEE 802.1D Spanning Tree Protocol
IEEE 802.1w Rapid Spanning Tree Protocol
IEEE 802.1s Multiple Spanning Tree Protocol
IEEE 802.1p Class of Service
Environment
Operating
Temperature:
0 to 50°C
Relative Humidity:
5 to 95% (non-condensing)
Storage
Temperature:
-10 to 70°C
Relative Humidity:
5 to 95% (non-condensing)
NS3500-24T-4C Managed Switch User Manual 13

Chapter 2
Installation
This section describes the hardware features and installation of the managed switch on
the desktop or rack mount. For easier management and control of the managed switch,
familiarize yourself with its display indicators, and ports. Front panel illustrations in this
chapter display the unit LED indicators. Before connecting any network device to the
managed switch, please read this chapter completely.
Hardware description
Switch front panel
Gigabit TP interface
10/100/1000BASE-T copper, RJ45 twisted-pair: Up to 100 meters.
SFP slots
100/1000BASE-X mini-GBIC slot, SFP (Small Factor Pluggable) transceiver module:
supports from 550 meters (multi-mode fiber), up to 10/30/50/70 kilometers (single-mode
fiber).
Console port
The console port is a DB9 connector and an interface for directly connecting a terminal.
Through the console port, the managed switch provides diagnostic information
including the IP address setting, factory reset, port management, link status, and
system setting. The included DB9 console cable connects to the console port on the
device. After making the connection, users can run any terminal emulation program
(Hyper Terminal, ProComm Plus, Telix, Winterm, and so on) to enter the startup screen
of the device
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Chapter 2: Installation
Reset button
Located on the left of the front panel, the reset button is designed to reboot the
managed switch without turning the power off and on. The following is the summary
table of the reset button functions:
Reset button pressed and released
Function
< 5 seconds: S
ystem reboot Reboots the managed switch
> 5 seconds: F
actory default Resets the managed switch to factory default
configuration. The managed switch then
reboots and loads the default settings as
shown below:
Default Username: admin
Default Password: admin
Default IP address: 192.168.0.100
Subnet mask: 255.255.255.0
Default Gateway: 192.168.0.254
LED indicators
The front panel LEDs indicate port link status, data activity, and system power.
System
LED
Color Function
P
WR Green Lit: indicates that the managed switch has power.
10/100/1000 Mbps port
LED Color Function
1000 LNK/ACT Green Lit: indicates the port has successfully connected to the
network at 1000 Mbps.
Blinking: indicates that the switch is actively sending or
receiving data over that port.
10/100
LNK/ACT Orange Lit: indicates the port has successfully connected to the network at 100 Mbps or 10 Mbps.
Blinking: indicates that the switch is actively sending or
receiving data over that port.
100/1000BASE-X SFP interfaces
LED Color Function
1000 Green Lit: indicates that the link through that port is established.
Blinking: indicates that the switch is actively sending or
receiving data over that port.
LNK/ACT Orange Lit: indicates that the link through that port is established.
Blinking: indicates that the port is actively sending or
receiving data over that port.
NS3500-24T-4C Managed Switch User Manual 15

Chapter 2: Installation
Switch rear panel
The rear panel of the managed switch contains an AC inlet power socket that accepts
input power from 100 to 240 VAC, 50-60 Hz.
AC power receptacle
For compatibility with electrical supplies in most areas of the world, the managed
switch’s power supply automatically adjusts to line power in the range of 100-240 VAC
and 50/60 Hz.
Plug the female end of the power cord firmly into the receptacle on the rear panel of the
managed switch and the other end of the power cord into an electrical outlet and then
power it on.
Note: The device is a power-required device, meaning it will not work until it is powered
on. If your network needs to be active at all times, consider using a UPS (Uninterrupted
Power Supply) for the device to help to prevent network data loss or network downtime.
In some areas, installing a surge suppression device may also help to protect the
managed switch from an unregulated surge or current to the switch or the power
adapter.
Installing the switch
This section describes how to install and make connections to the managed switch.
Read the following topics and perform the procedures in the order presented.
To install the managed switch on a desktop or shelf:
1. Attach the rubber feet to the recessed areas on the bottom of the managed switch.
2. Place the managed switch on the desktop or the shelf near an AC power source, as
shown below:
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Chapter 2: Installation
3. Keep enough ventilation space between the managed switch and the surrounding
objects.
Note: When choosing a location, please keep in mind the environmental restrictions
indicated in “Product specifications” on page 11.
4. Connect one end of a standard network cable to the 10/100/1000 RJ45 ports on the
front of the managed switch and the other end of the cable to the network devices
such as printer servers, workstations or routers.
Note: Connection to the managed switch requires UTP Category 5 network cabling
with RJ45 tips. For more information, see Appendix A “Networking connection” on
page 293.
5. Connect one end of the power cable to the managed switch.
6. Connect the power plug of the power cable to a standard wall outlet.
7. When the managed switch receives power, the power LED illuminates solid green.
Rack mounting
To install the managed switch in a 19-inch standard rack:
1. Place the managed switch on a hard, flat surface with the front panel positioned
towards the front side.
2. Attach the rack-mount bracket to each side of the managed switch with the supplied
screws as shown below.
Caution: You must use the screws supplied with the mounting brackets. Damage
caused to the parts by using incorrect screws will invalidate the warranty.
3. Secure the brackets tightly.
4. Follow the same steps to attach the second bracket to the opposite side.
5. After the brackets are attached to the managed switch, use suitable screws to
securely attach the brackets to the rack, as shown below.
NS3500-24T-4C Managed Switch User Manual 17

Chapter 2: Installation
6. Follow steps 4 through 7 under “To install the managed switch on a desktop or
shelf” in this section to connect the network cabling and supply power to the
managed switch.
Installing the SFP transceiver
SFP transceivers are hot-pluggable and hot-swappable. They can be plugged in and
removed to/from any SFP port without having to power down the managed switch (see
below).
18 NS3500-24T-4C Managed Switch User Manual