
IFS Line / Network Transmission
24-port Gigabit
Layer 2 Industrial
Managed Switch
Overview
The IFS 24-port Gigabit Managed Industrial Switch is an
environmentally hardened Layer 2 switch with high port density
and Gigabit Fiber uplink capability in a rugged IP30 rated 19" rackmountable design. This Industrial Switch provides full management
capabilities and is perfect for applications such as factory automation,
distribution centers, utilities and intelligent transportation systems (ITS).
Environmentally Hardened Design for Industrial Networking
This switch is engineered for stable operation in electrically harsh
and demanding environments under a wide operating temperature
range. This switch is equipped with advanced management features
and provides 24 10/100/1000Base-T copper ports and 4 shared
1000Base-SX/LX SFP slots. It is designed with a non-blocking switch
fabric and is capable of providing wire-speed throughput as high as
48Gbps for reliable operation from -40 to 75°C without any packet
loss and CRC errors.
Robust Layer 2 Features
This Industrial Managed Switch provides advanced Layer 2 to
Layer 4 data switching and redundancy, such as support for STP,
RSTP and MSTP to greatly improve redundant data backup and
guarantee network resilience. Other features include Quality of
Service traffic control, network access control and authentication,
and Secure Management features to protect a facilities industrial
network connectivity with a reliable switching recovery capability that
is suitable for implementing highly fault-tolerant and mesh network
architectures. This switch also supports standard Simple Network
Management Protocol (SNMP) and includes an advance SNMP
feature set to monitor the status of the switch and traffic per port.
The switch can also be monitored via any standards-based SNMP
management software.
NS3550-24T/4S
IPv6 Support
The IFS Industrial Managed Switch is the ideal solution for new or
existing networks that are adopting IPv6. This switch supports both
IPv4 and IPv6 management functions and can work with an original
IPv4 network infrastructure. With an easy-to-use management
interface and a robust number of management functions, the IFS
Industrial Managed Switch is the best choice for building out IPv6
FTTx edge services and for Industrial applications to connect with an
IPv6 network.
Powerful Security
This switch offers comprehensive Access Control List (ACL)
for enforcing security to the edge. Its protection mechanisms
also comprise of port-based 802.1x, RADIUS and TACACS+
users access authentication, and MAC-based user and device
authentication allowing network administrators to managed highly
secured industrial networks.
Integrated Intrusion/Event Alarms via Digital I/O
The IFS Industrial Managed Switch provides digital input and output
functions to assist system administrator’s to efficiently react to
emergency events. The digital input can be setup to indicate alarm
events and send a message or alarm to the network system once
the urgent event is detected by an external device, such as a door or
window contact. The digital output function can define the immediate
response such as a port failed or power failed related to the alarm event.
Redundant Power to Ensure Continuous Operation
The IFS Industrial Managed Switch also supports redundant
DC power inputs with transient protection to ensure reliable and
continuous operation. The redundant power system is designed to
operate in a range from 36~72VDC for reliable operation in mission
critical network deployments which require a highly resilient network.
interlogix.com

Standa r d Fe atureS
24-port Gigabit Industrial Managed Switch
• 24-ports RJ-45 10/100/1000Base-T
• 4 SFP/mini-GBIC slots shared with Ports 21 to 24 - compatible
with 1000Base-SX/LX /BX and 100Base-FX SFP transceivers
• RS-232 DB9 console interface for basic switch management
and setup
High-performance Switch Architecture
• Complies with the IEEE 802.3, IEEE 802.3u, IEEE 802.3ab,
IEEE 802.3z standards
• High performance Store and Forward architecture, broadcast
storm control, runt/CRC ltering eliminates erroneous
packets to optimize the network bandwidth
• Prevents packet loss with back pressure (half-duplex) and
IEEE 802.3x PAUSE frame ow control (full-duplex)
• Up to 48Gbps non-blocking switch fabric
• 10K bytes Jumbo frame support
• 8K MAC address table, automatic source address learning
and ageing
Full Multicast Support for IP Video
• IGMP Snooping v1, v2 and v3 fast leave
• IGMP Query mode support
• Up to 256 multicast groups
VLAN Support
• IEEE 802.1Q Tag-Based VLAN
• Up to 255 VL ANs groups, out of 4096 VLAN IDs
• Port-Based VLAN
• Q-in-Q tunneling (Double Tag VLAN)
Spanning Tree Protocol
• STP, IEEE 802.1D (Spanning Tree Protocol)
• RSTP, IEEE 802.1w (Rapid Spanning Tree Protocol)
• MSTP, IEEE 802.1s (Multiple Spanning Tree Protocol);
Up to 8 MSTP instances
Quality of Service (QoS)
• 4 priority queues on all switch ports
• Trafc classication:
- IEEE 802.1p Class of Service
- IP TOS/DSCP code priority
- Port Base priority
• Strict priority and weighted round robin (WRR) CoS policies
• Ingress/Egress Bandwidth Control on each port
Link Aggregation
• IEEE 802.3ad LACP (Link Aggregation Control Protocol)
• Up to 12 Trunk groups
• Up to 16 ports per trunk group with 32Gbps bandwidth
(Full Duplex mode)
• Supports Cisco ether-Channel (Static Trunk)
Advanced Security
• IEEE 802.1x Port-based authentication
• RADIUS and TACACS+ users access authentication
• Layer 3 and Layer 4 Access Control List (ACL)
• MAC Filtering and Source IP/MAC address port-binding
• Port Mirroring to monitor incoming or outgoing trafc
on a particular port
Switch Management
• Local console or remote switch management via Web browser,
Telnet CLI, SNMP v1, v2c, v3
• SNMP Trap for alarm notication of events
• Four RMON groups 1, 2, 3, 9 (history, statistics, alarms,
and events)
• Built-in Trivial File Transfer Protocol (TFTP) client
• BOOTP and DHCP for IP address assignment
• Conguration upload/download via TFTP or HTTP
• Firmware upgrade via TFTP or HTTP
• SNTP (Simple Network Time Protocol)
• LLDP Protocol
• Supports Ping function
• Cable Diagnostics
• Reset button for system management
Robust Hardened Design
• IP30 metal enclosure
• 36 ~ 72VDC, redundant power with reverse-polarity protection
• Alarm relay output for port breakdown and power-failure alert
• Complies with IEC60068-2-xx standards for free-fall,
shock and vibration
• Wide operating temperature range of -40ºC ~ +75ºC
Warranty
• 3-year Limited Warranty
Firmware 1.5 FeatureS
Management
• IPv6 Management
• IPv6 Auto Conguration
• Port Description
• Conguration Backup
Expect IP
• MAC Address Query by Port
• Telnet / SSH
• HTTP Web Management/SSL
• LLDP-MED
• DHCP Relay
• DNS Proxy
• Remote IP Ping by Port
• CPU Loading Monitoring
Management Access Control
• HTTP / HT TPs
• SNMP
• Telnet / SSH
• 6 Levels - Local Users
Privilege Access Control
• 15 Levels - Remote User
Privilege Access Control
Event Log / Alarm
• Local System Log
• Remote Syslog (RFC3164)
• SMTP (RFC 821)
• .CSV log download
Enhanced Spanning Tree
• 802.1s
• BPDU Guard / Filtering
• Port Error Recovery
• Auto Edge
Improved Multicasting
• IGMP Router Por t Control
• MVR
• Multicast Group Filtering
• IGMP Throttling
• IGMP Leave Proxy
Enhanced VoIP Support
• DSCP Remarking
• Voice VLAN
Improved Security
• Guest VLAN Authentication
• TACACS+ Authentication
• DHCP Snooping
• IP Source Guard
• Static IP Source Guard
• ARP Inspection
• Static ARP Inspection

Simple, yet Powerful Web Services
Simple, yet powerful Web Services provide an easy-to-use,
browser-based interface for switch configuration, management
and network monitoring.
Programming functions such as port speed configuration,
multicasting for IP video, IGMP snooping and query, Rapid
Spanning Tree, QoS (Quality of Service), VLAN set up, Port Trunking,
bandwidth utilization, etc., are all easily accessible with a click of
a mouse.
Simple Multicasting
IFS Layer 2 managed switches offer full multicast support for IP video.
Many Layer 2 switches provide only IGMP snooping, which is only
half of the multicasting process. IFS switches provide support for both
IGMP snooping and querying providing full reliable handling
of IP video streams.
In addition, these switches provide the ability to configure up to 255
multicasting groups. Set up is simple and easy with the built-in
Web Services.
Built-in Diagnostics
The IFS GigE switches go beyond just basic set
up operations. The built-in Web Services provides
cable diagnostics that can monitor each port
providing immediate notification of problem areas.
Diagnosis of ethernet connections, and cable
connections right down to the wire pair save you
valuable time and expense in troubleshooting
system cable problems.
IFS switches even allow you to test the path between switches within
a network assuring the path can handle large IP packets. Using ICMP,
simply enter the destination IP address and file size and click start!

24-port Gigabit
Layer 2 Industrial
Managed Switch
North America
T 855-286-8889
Asia
T 852-2907-8108
Australia
T 61-3-9239-1200
Europe
T 32-2-725-11-20
Latin America
T 561-998-6114
Specifications
Physical Ports Description
10/100/1000Base-T (X) Ports
SFP/Mini-GBIC Slots
Port Configuration
Port Speed
Switch Performance
Switch Architecture
Switch Fabric
Switch Throughput
Mac Address Table
Share Data Buffer
Jumbo Frame Size
Flow Control
Layer 2 Functions
Management Interface
Port Configuration
Port Status
Port Mirroring
Bandwidth Control
VLAN
Link Aggregation
Quality of Service (QoS)
Multicasting/IGMP
Access Control List
SNMP MIBs
LED Indicators & Switch
Power
10/100/1000Base-TX/PoE Ports
10/100/1000Base-T/SFP Ports
FAN(s)
Reset Button
Electrical & Mechanical
Power
Power Consumption (@ 48VDC)
Dimensions (WxDxH); in/cm
Weight; lbs/kgs
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
Standards Compliance
Regulatory Standards
IEEE Standards
RJ-45 (24)
SFP/Mini-GBIC Slots (4) - Shared with RJ-45 Ports-21 to 24; 1000Base-SX/LX/BX and
100Base-FX SFP transceiver compatible
Auto MDI/MDI-X
Auto-negotiate
Store-and-Forward
48Gbps non-blocking
35.7Mbpps@64Bytes
8K entries
1392 kilobytes
10Kbytes
IEEE 802.3x Pause Frame for Full-Duplex
Back pressure for Half-Duplex
Console, Telnet, Web Browser, SNMPv1, v2c and v3
Port enable/disable; Auto-negotiation; 10/100/1000Mbps full and half duplex mode selection;
Flow Control enable/disable; Bandwidth control on each port
Display each port’s: speed duplex mode, link status, flow control status,
Auto negotiation status, trunk status
TX/RX/Both; 1 to 1 monitoring
Ingress/Egress rate control: configure per 128Kbps
IEEE 802.1q tagged-based VLAN; Port-based VLAN; Q-in-Q tunneling;
Up to 255 VLANs groups; Private VLAN
IEEE 802.3ad LACP / Static Trunk; Supports 12 groups of 16-Port trunks
Traffic classification based, Strict priority and WRR; 4-level priority for switching
- Port Number - 802.1p priority - DS/TOS field in IP Packet
IGMP (v1/v2) Snooping, up to 255 multicast Groups; IGMP Querier mode support
IP-Based ACL/MAC-Based ACL 256 entries
RFC-1213 MIB-II; IF-MIB; RFC-1493 Bridge MIB; RFC-1643 Ethernet MIB;
RFC-2863 Interface MIB; RFC-2665 Ether-Like MIB; RFC-2737 Entity MIB;
RFC-2618 RADIUS Client MIB; RFC-2933 IGMP-STD-MIB; RFC3411 SNMP-Frameworks-MIB;
IEEE802.1X PAE; LLDP; MAU-MIB
On/Green
10/100 LNK/ACT - Green
100 LNK/ACT - Green; 1000 LNK/ACT - Green
Alarm/Green
System reboot: push and hold < 5 sec.; Factory Default: push and hold > 5 sec.
36~72VDC dual redundant external power with reverse polarity protection
System On: 22.08 Watts / 75.75 BTU; Full Load: 32.28 Watts / 110.75 BTU
17.32 x 7.87 x 1.75 in. (44 x 20 x 44.5 cm)
6.13lbs / 2.78kg
-40ºC ~ 75ºC
-40ºC ~ 85ºC
0% to 95% (non-condensing)
FCC Part 15 Class A, CE
IEEE 802.3 10Base-T; IEEE 802.3u 100Base-TX/100Base-FX; IEEE 802.3z Gigabit SX/LX;
IEEE 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; IEEE 802.1Q VLAN Tagging
IEEE 802.1x Port Authentication Network Control; IEEE 802.1ab LLDP
Dimensional Diagrams
17.5 in.
(443.7 mm)
2 4 6 8
10 12 14 16
NS3550-24T/4S
1820 2224
2 46 8 1012 1416
DC 2
Console
1
DC
1719 2123
1 35 7 9 1113 15
Fault
PWRReset
ACT1000 ACT10/100
115200, N, 8, 1
1 3 5 7
9 11 13 15
18 20 22 24
17 19 21 23
24-Port Gigabit Industrial
Managed Switch
24
222124
23
ACTLNK
212223
Ordering
Information
NS3550-24T/4S
Included
Accessories
Note: External power supply must be
ordered separately.
24-Port Gigabit
Industrial Managed
Switch
Quick Installation
Guide, User Manual
CD, 19” Rack mount
accessory kit, rubber
feet, RS-232 DB9
male console cable
Accessories
SFP (100Mbps)
SFP (1000Mbps)
HLG-240-48
PS48VDC100W-DIN
210-3573 2012/10 (71654J)
S25 Series
(wide-temp)
S35 Series
(wide-temp)
48VDC (240W)
Hardened Industrial
Power Supply
48VDC @ 2A
(100W) Hardened
DIN-Rail Mount
Power Supply
(100~240VAC)
interlogix.com
Specifications subject to
change without notice.
© 2012 Interlogix.
All rights reserved.
7.9 in.
(200.5 mm)
1.75 in.
(44.4 mm)