Interlogix IFS NS2503-24P/2C User manual

P/N 1072568 • REV 00.04 • ISS 10SEP12
IFS NS2503-24P/2C
User Manual

Copyright © 2012 UTC Fire & Security. All rights reserved.
This document may not be copied in whole or in part or otherwise reproduced without prior
written consent from UTC Fire & Security, except where specifically permitted under US
and international copyright law.
Disclaimer The information in this document is subject to change without notice. UTC Fire & Security
assumes no responsibility for inaccuracies or omissions and specifically disclaims any
liabilities, losses, or risks, personal or otherwise, incurred as a consequence, directly or
indirectly, of the use or application of any of the contents of this document. For the latest
documentation, contact your local supplier or visit us online at www.interlogix.com.
This publication may contain examples of screen captures and reports used in daily
operations. Examples may include fictitious names of individuals and companies. Any
similarity to names and addresses of actual businesses or persons is entirely coincidental.
Trademarks and patents The Interlogix name and logo are trademarks of UTC Fire & Security.
The IFS name and logo are trademarks of UTC Fire & Security.
Other trade names used in this document may be trademarks or registered trademarks of
the manufacturers or vendors of the respective products.
Intended use Use this product only for the purpose it was designed for; refer to the data sheet and user
documentation for details. For the latest product information, contact your local supplier or
visit us online at www.interlogix.com.
Manufacturer UTC Fire & Security Americas Corporation, Inc.
2955 Red Hill Avenue
Costa Mesa, CA 92626-5923, USA
EU authorized manufacturing representative:
UTC Fire & Security B.V., Kelvinstraat 7,
6003 DH Weert, The Netherlands
Certification
N4131
FCC compliance 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.
You are cautioned that any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
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.
Canada This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme á la norme NMB-003du Canada.
European Union directives 2004/108/EC (EMC Directive): Hereby, UTC Fire & Security declares that this device is in
compliance with the essential requirements and other relevant provisions of Directive
2004/108/EC.
2002/96/EC (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.
Contact information For contact information see our Web site: www.interlogix.com.
Contact support www.interlogix.com/customer support

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TABLE OF CONTENTS
1IFS NS2503-24P/2C USER MANUAL..............................................................................1
11. INTRODUCTION ..........................................................................................................8
11.1 Package Contents................................................................................................................................8
11.2 Product Description.............................................................................................................................9
11.3 How to Use This Manual................................................................................................................... 11
11.4 Product Features............................................................................................................................... 12
11.5 Product Specification....................................................................................................................... 14
12. INSTALLATION..........................................................................................................16
12.1 Hardware Description....................................................................................................................... 16
12.1.1 Switch Front Panel .................................................................................................................... 16
12.1.2 LED Indications.......................................................................................................................... 17
12.1.3 Switch Rear Panel ..................................................................................................................... 19
12.2 Install the Switch............................................................................................................................... 20
22.2.1 Desktop Installation ................................................................................................................... 20
22.2.2 Rack Mounting........................................................................................................................... 21
22.2.3 Installing the SFP transceiver.................................................................................................... 22
23. SWITCH MANAGEMENT...........................................................................................24
23.1 Requirements .................................................................................................................................... 24
23.2 Management Access Overview ....................................................................................................... 25
23.3 Web Management.............................................................................................................................. 26
23.4 SNMP-Based Network Management ...............................................................................................27
23.5 Administration Console.................................................................................................................... 27
23.6 Protocols............................................................................................................................................ 29
23.6.1 Virtual Terminal Protocols ......................................................................................................... 29
23.6.2 SNMP Protocol .......................................................................................................................... 29
23.6.3 Management Architecture ......................................................................................................... 29
24. WEB-BASED MANAGEMENT...................................................................................30
24.1 About Web-based Management ...................................................................................................... 30
24.1.1 Requirements ............................................................................................................................ 31
24.1.2 Logging on the Managed Switch ............................................................................................... 31
24.1.3 Main WEB PAGE....................................................................................................................... 33
24.2 System................................................................................................................................................ 35
24.2.1 System Information.................................................................................................................... 36
24.2.2 IP Configuration......................................................................................................................... 39
24.2.3 Console Port Info....................................................................................................................... 41

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24.2.4 SNMP Configuration.................................................................................................................. 42
24.2.5 Syslong Setting.......................................................................................................................... 50
24.2.6 System Log................................................................................................................................ 51
24.2.7 SNTP Setting ............................................................................................................................. 52
24.2.8 Firmware Upgrade..................................................................................................................... 53
24.2.9 Configuration Backup ................................................................................................................ 55
24.2.10 Factory Default ........................................................................................................................ 57
24.2.11 System Reboot ........................................................................................................................ 57
24.3 Port Configuration ............................................................................................................................ 58
24.3.1 Port Control................................................................................................................................ 58
24.3.2 Rate Control............................................................................................................................... 60
24.3.3 Port Status ................................................................................................................................. 60
24.3.4 Port Statistics............................................................................................................................. 62
24.3.5 Port Sniffer................................................................................................................................. 63
24.3.6 Protect Port................................................................................................................................ 65
24.3.7 Remote Ping.............................................................................................................................. 66
24.4 VLAN configuration .......................................................................................................................... 67
24.4.1 VLAN Overview ......................................................................................................................... 67
24.4.2 Static VLAN Configuration......................................................................................................... 69
24.4.3 Port-based VLAN....................................................................................................................... 70
24.4.4 802.1Q VLAN............................................................................................................................. 72
24.4.5 GVRP VLAN .............................................................................................................................. 77
24.4.6 Q-in-Q VLAN.............................................................................................................................. 80
24.5 Trunking............................................................................................................................................. 84
24.5.1 Aggregator setting ..................................................................................................................... 85
24.5.2 Aggregator Information.............................................................................................................. 86
24.5.3 State Activity .............................................................................................................................. 90
24.6 Forwarding and Filtering.................................................................................................................. 91
34.6.1 Dynamic MAC Table.................................................................................................................. 91
34.6.2 Static MAC Table....................................................................................................................... 92
34.6.3 MAC Filtering............................................................................................................................. 93
34.7 IGMP Snooping ................................................................................................................................. 94
34.7.1 Theory........................................................................................................................................ 94
34.7.2 IGMP Configuration ................................................................................................................... 98
34.7.3 Static Multicast Table .............................................................................................................. 100
34.8 Spanning Tree Protocol.................................................................................................................. 102
34.8.1 Theory...................................................................................................................................... 102
34.8.2 Illustration of STP .................................................................................................................... 105
34.8.3 STP Parameters ...................................................................................................................... 106

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34.8.4 STP System Configuration ...................................................................................................... 107
34.8.5 Port Configuration.................................................................................................................... 111
34.9 DHCP Relay & Option 82................................................................................................................ 113
34.10 LLDP............................................................................................................................................... 115
34.10.1 Port Configuration.................................................................................................................. 115
34.10.2 Per Port Configuration ........................................................................................................... 116
34.11 Access Control List ...................................................................................................................... 117
34.12 Users Configuration...................................................................................................................... 120
34.13 MAC Limit ...................................................................................................................................... 123
34.13.1 MAC Limit Configuration........................................................................................................ 123
34.13.2 MAC Limit Port Status ........................................................................................................... 124
34.14 802.1X Configuration.................................................................................................................... 125
34.14.1 Understanding IEEE 802.1X Port-Based Authentication ...................................................... 125
34.14.2 System Configuration ............................................................................................................ 127
34.14.3 802.1x Port Configuration...................................................................................................... 129
34.14.4 Misc Configuration................................................................................................................. 130
34.15 QoS Configuration........................................................................................................................ 131
34.15.1 Understand QoS.................................................................................................................... 131
34.15.2 QoS Configuration ................................................................................................................. 132
34.15.3 TOS/DSCP ............................................................................................................................ 135
34.16 Power over Ethernet..................................................................................................................... 138
34.16.1 Power over Ethernet Powered Device .................................................................................. 138
34.16.2NS2503-24P/2C Power Management .................................................................................... 139
34.16.3 PoE Schedule........................................................................................................................ 143
35. CONSOLE MANAGEMENT.....................................................................................145
35.1 Login in the Console Interface ...................................................................................................... 145
35.2 Configure IP address...................................................................................................................... 146
35.3 Commands Level ............................................................................................................................ 147
36. COMMAND LINE INTERFACE ................................................................................149
36.1 Operation Notice ............................................................................................................................. 149
36.2 System Commands......................................................................................................................... 150
36.3 Switch Static Configuration........................................................................................................... 151
36.3.1 Port Configuration and show status ........................................................................................151
36.4 Trunk Configuration........................................................................................................................ 154
36.4.1 Trunking Commands ............................................................................................................... 154
36.4.2 LACP Command...................................................................................................................... 154
36.5 VLAN Configuration........................................................................................................................ 156
36.5.1 Virtual LANs............................................................................................................................. 156
36.5.2 VLAN Mode: Port-based.......................................................................................................... 157

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46.5.3 Advanced 802.1Q VLAN Configuration................................................................................... 158
46.6 Misc Configuration.......................................................................................................................... 161
46.7 Administration Configuration........................................................................................................ 161
46.7.1 Change Username / Password................................................................................................161
46.7.2 IP Configuration....................................................................................................................... 162
46.7.3 Reboot switch .......................................................................................................................... 163
46.7.4 Reset to Default....................................................................................................................... 163
46.7.5 TFTP Update Firmware ........................................................................................................... 163
46.7.6 Restore Configure File............................................................................................................. 164
46.7.7 Backup Configure File ............................................................................................................. 164
46.8 MAC limit.......................................................................................................................................... 164
46.9 Port Mirroring Configuration.......................................................................................................... 165
46.10 Quality of Service.......................................................................................................................... 166
46.10.1 QoS Configuration ................................................................................................................. 166
46.10.2 Per Port Priority ..................................................................................................................... 167
46.11 MAC Address Configuration........................................................................................................ 167
46.12 STP/MSTP Commands.................................................................................................................. 169
46.13 SNMP.............................................................................................................................................. 174
46.13.1 System Options ..................................................................................................................... 174
46.13.2 Community Strings ................................................................................................................ 174
46.13.3 Trap Managers ...................................................................................................................... 175
46.14 IGMP............................................................................................................................................... 175
46.15 802.1x Protocol.............................................................................................................................. 177
46.16 Access Control List ...................................................................................................................... 180
46.16.1 Ipv4 ACL commands ............................................................................................................. 180
46.16.2 Non-Ipv4 ACL commands ..................................................................................................... 181
46.17 Binding........................................................................................................................................... 182
46.17.1 SIP/SMAC binding commands .............................................................................................. 182
46.18 Power over Ethernet Commands ................................................................................................ 184
46.18.1 Display System PoE status ................................................................................................... 184
46.18.2 Configure PoE Over Temperature Protection ....................................................................... 186
46.18.3 Configure PoE -- System....................................................................................................... 187
46.18.4 Configure PoE -- Port ............................................................................................................ 193
47. SWITCH OPERATION..............................................................................................196
47.1 Address Table ................................................................................................................................. 196
47.2 Learning........................................................................................................................................... 196
47.3 Forwarding & Filtering.................................................................................................................... 196
47.4 Store-and-Forward.......................................................................................................................... 196
47.5 Auto-Negotiation............................................................................................................................. 197

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48. POWER OVER ETHERNET OVERVIEW.................................................................198
4What is PoE? ......................................................................................................................................... 198
4The PoE Provision Process ................................................................................................................. 199
4Stages of powering up a PoE link..................................................................................................... 200
4Line Detection................................................................................................................................... 200
4Classification..................................................................................................................................... 200
4Start-up ............................................................................................................................................. 200
4Operation .......................................................................................................................................... 200
4Power Disconnection Scenarios....................................................................................................... 200
49. TROUBLE SHOOTING.............................................................................................202
4APPENDIX A—RJ-45 PIN ASSIGNMENT...................................................................203
5A.1 Switch's RJ-45 Pin Assignments.................................................................................................. 203
5A.2 10/100Mbps, 10/100Base-TX.......................................................................................................... 203
5APPENDIX B: LOCAL USER ACCESS LEVEL TABLE .............................................205

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1. Introduction
The IFS Layer 2 Managed Switch NS2503-24P/2C has 24 10/100Mbps 802.3at compliant PoE ports, with two Gigabit TP/SFP
fiber optical combo ports and robust layer 2 features. The NS2503-24P/2C also provides IEEE 802.3af / IEEE 802.3at Power
over Ethernet standards to fill various PoE applications.
Terms of “Managed Switch” means the Switch mentioned titled in the cover page of this user’s manual, i.e.NS2503-24P/2C.
1.1 Package Contents
Open the box of the Managed Switch and carefully unpack it. The box should contain the following items:
Check the contents of your package for following parts:
;The Managed Switch x1
;Quick Installation Guide
;User’s Manual CD x1
x1
;19” Rack mount Accessory Kit x1
;Power Cord x1
;Rubber Feet X4
;RS-232 DB9 Male Console Cable x1
If any of these are missing or damaged, please contact your distributor or IFS sales rep immediately, if possible, retain the
original carton and packaging material in case you need to return the product for repair/replacement.

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1.2 Product Description
Power over Ethernet
The PoE in-line power following the standard IEEE 802.3af and IEEE 802.3at enables the Managed Switch to power up to 24
IEEE 802.3af PoE devices or 11 IEEE 802.3at PoE devices at the distance of up to 100 meters through the 4-pair Cat 5/5e UTP
wire (assuming devices use max limits of these standards; i.e. 15W for 802.3af, and 30W for 802.3at).
Flexibile PoE System Management
Managed Switch not only provides more PoE management function than ever before but also provides better reliability. System
PoE Admin Mode feature offers user to switch PoE system mode between IEEE 802.3af and IEEE 802.3at easily and the
Temperature Threshold and PoE Usage Threshold provides more realiable control.
Cost-effective solution with SNMP monitor for Network deployment
Not only for catering to the need of easy WEB-based management but also the centralized SNMP application to monitor the
status of Managed Switch and traffic per port, the key features are as below:
802.3af / 802.3at PoE SNMP and 4 RMON groups
WEB / SSL / Telnet Access Control List
802.1Q / Q-in-Q VLAN IGMP Snooping
Multiple Spanning Tree Protocol PoE Management / Alarm
High Performance Wire-Speed Switching
The Managed Switch is equipped with 24 10/100Mbps Fast Ethernet ports with 2 Gigabit TP/SFP combo ports (Port-25, 26).
The two Gigabit TP/SFP combo ports can be either 1000Base-T for 10/100/1000Mbps or 1000Base-SX/LX through SFP (Small
Form-Factor Pluggable) interface. Managed Switch boasts a high performance switch architecture that is capable of providing
non-blocking switch fabric and wire-speed throughput as high as 8.8Gbps. Its two built-in GbE uplink ports also offer incredible
extensibility, flexibility and connectivity to the Core switch or Servers.
Remote and Centralize Management installation
With its built-in Web-based management, 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
monitored via any standard-based management software.
For efficient management, via WEB interface the Managed Switch can be programmed for basic switch management functions
such as port speed configuration, Port Trunking, VLAN, Port Mirroring, Rapid Spanning Tree and Misc Configuration.
Additionally, the firmware includes advanced features such as IGMP snooping, QoS (Quality of Service), broadcast storm and
bandwidth control, to enhance bandwidth utilization.

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Powerful Security
The Managed Switch offers comprehensive Access Control List (ACL) for enforcing security to the edge. Its protection
mechanisms comprises of Port-based 802.1X user and device authentication. Moreover, the switch provides MAC filter and
Static MAC for enforcing security policies to the edge. The administrators can now construct highly secured corporate networks
with considerably less time and effort than before.

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1.3 How to Use This Manual
This User Manual is structured as follows:
Section 2, INSTALLATION
The section explains the functions of the Switch and how to physically install the Managed Switch.
Section 3, SWITCH MANAGEMENT
The section contains the information about the software function of the Managed Switch.
Section 4, WEB CONFIGURATION
The section explains how to manage the Managed Switch by Web interface.
Section 5, CONSOLE MANAGEMENT
The section describes how to use the Console management interface.
Section 6, COMMAND LINE INTERFACE
The section explains how to manage the Managed Switch by Command Line interface.
Section 7, SWITCH OPERATION
The chapter explains how to does the switch operation of the Managed Switch.
Section 8, POWER OVER ETHERNET OVERVIEW
The chapter introduce the IEEE 802.3af / IEEE 802.3at PoE standard and PoE provision of the Managed Switch.
Section 9, TROUBSHOOTING
The chapter explains how to trouble shooting of the Managed Switch.
Appendix A
The section contains cable information of the Managed Switch.

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1.4 Product Features
¾Physical Port
24-Port 10/100Base-TX Fast Ethernet ports with IEEE 802.3af / IEEE 802.3at PoE injector
2 10/100/1000Base-T TP combo interfaces
2 1000Base-X mini-GBIC/SFP slots, shared with Port-25 and Port-26
Reset button for system management
1 RS-232 male DB9 console interface for Switch basic management and setup
¾Power over Ethernet
Complies with IEEE 802.3af / IEEE 802.3at Power over Ethernet End-Span PSE
Up to 24 IEEE 802.3af devices powered
Up to 11 IEEE 802.3at devices powered
Support PoE Power up to 15.4 Watts / 30 Watts for each PoE port
Auto detect powered device (PD)
Circuit protection to prevent power interference between ports
Remote power feeding up to 100m
PoE Management
•IEEE 802.3af and IEEE 802.3at mode switch control
•Total PoE power budget control
•Per port PoE function enable/disable
•PoE Admin-mode control
•PoE Port Power feeding priority
•PD classification detection
•Over Temperature Protection function
•Temperature Threshold Control
•PoE Usage Threshold Control
¾Layer 2 Features
Prevents packet loss Flow Control:
- IEEE 802.3x PAUSE Frame flow control for Full-Duplex mode
- Back-Pressure Flow Control in Half-Duplex mode
High performance of Store-and-Forward architecture, runt/CRC filtering eliminate erroneous packets to optimize the
network bandwidth
Broadcast / Multicast / Unicast storm control
8K MAC address table, automatic source address learning and ageing
Supports VLAN
- IEEE 802.1Q Tag-based VLAN
- Port-Based VLAN
- Q-in-Q tunneling
- GVRP for dynamic VLAN Management
- Private VLAN Edge (PVE / Protect Port )
Supports Link Aggregation
−up to 13 trunk groups
−up to 8 ports per trunk group with 1.6Gbps bandwidth (Full Duplex Mode)
−IEEE 802.3ad LACP (Link Aggregation Control Protocol)

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−Cisco ether-channel (Static Trunk)
Spanning Tree Protocol
- STP, IEEE 802.1D (Classic Spanning Tree Protocol)
- MSTP, IEEE 802.1s (Multiple Spanning Tree Protocol, spanning tree by VLAN)
Port Mirroring to monitor the incoming or outgoing traffic on a particular port
¾Quality of Service
4 priority queues on all switch ports
Traffic classification:
- IEEE 802.1p CoS
- IP TOS / DSCP to 802.1p priority mapping
- Port-Based priority
Strict priority and Weighted Round Robin (WRR) CoS policies
Supports QoS and In/Out bandwidth control on each port
In/Out rate limit control on each port
¾Multicast
Supports IGMP Snooping v1 and v2
IGMP Snooping v2 fast leave
Querier mode support
¾Security
IEEE 802.1x Port-Based network access control protocol
RADIUS users access authentication
L3 / L4 Access Control List (ACL)
Source IP-MAC / Port-Binding
Port Security for Source MAC address entries filtering
¾Management
Switch Management Interface
- Telnet Command Line Interface
- Web switch management
- SNMP v1, v2c, v3 switch management
- SSL switch management
Three user privilege levels control (Admin, Operator, viewer)
DHCP client for IP address assignment
DHCP Option82 and DHCP Relay
Link Layer Discovery Protocol (LLDP) for easy network management
Built-in Trivial File Transfer Protocol (TFTP) client
Firmware upgrade via TFTP or HTTP
Configuration restore / backup via TFTP or HTTP
Event message logging to remote Syslog server
Alarm records extractable in standard CSV format for post processing
Four RMON groups 1, 2, 3, 9 (history, statistics, alarms, and events)
SNMP trap / E-Mail Alarm for interface Link Up and Link Down notification
Supports Ping function
Supports Simple Network Protocol (SNTP)

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1.5 Product Specification
Product NS2503-24P/2C
24-Port 10/100Mbps + 2 Gigabit TP / SFP Managed 802.3at PoE Switch
Hardware Specification
10/100Mbps Copper Ports 24 10/ 100Base-TX RJ-45 Auto-MDI/MDI-X ports
1000Mbps Copper Ports 2 10/100/1000Mbps RJ-45 Auto-MDI/MDI-X ports
SFP/mini-GBIC Slots 2 1000Base-SX/LX/BX, shared with Port-25~Port-26
Switch Architecture Store-and-Forward
Switch Fabric 8.8Gbps / non-blocking
Switch Throughput 6.547Mpps @64Bytes
Address Table 8K entries
Share Data Buffer 512Kbytes
Flash 4MB
DRAM 32MB
Maximum Frame Size 9K Bytes
Flow Control Back pressure for Half-Duplex
IEEE 802.3x Pause Frame for Full-Duplex
LED
Power, PoE Power, FAN Alert
Link/Activity (Green)
PoE In-Use (Amber)
1000 LNK / ACT(Green)
10/100 LNK / ACT(Green)
Dimensions ( W x D x H) 440 x 300 x 44.5mm, 1U height
Weight 4.6kg
Power Requirement 100 - 240VAC, 50 - 60Hz, Auto-sensing.
Power Consumption System: 110V: 29 Watts / 98BTU, 220V: 31 Watts / 105BTU Ethernet Full Loading: 110V: 34 Watts / 116BTU, 220V: 35 Watts / 119BTU
PoE Full Loading: 110V: 360 Watts / 1228BTU, 220V: 360 Watts / 1228BTU
Operating Temperature 0°C ~ 50°C Degree C
Operating Humidity 10% ~ 95% (non-condensing)
Storage Temperature -20°C ~ 70 Degree C
Storage Humidity 10% ~ 95% (non-condensing)
Reset Button < 5 sec: System reboot
> 10 sec: Factory Default
Power over Ethernet
PoE Standard IEEE 802.3af / IEEE 802.3at Power over Ethernet / PSE
PoE Power Supply Type End-Span
PoE Power Output Per Port 52V DC, 350mA . Max.15.4 Watts (IEEE 802.3af)
Per Port 52V DC, 590mA. Max. 30 Watts (IEEE 802.3at)
Power Pin Assignment 1/2(+), 3/6(-)
PoE Power Budget 360 Watts (Port 1 to port 12: 180 Watts, port 13 to port 24: 180 Watts)
Max. number of Class 1 PD 24
Max. number of Class 2 PD 24
Max. number of Class 3 PD 24
Max. number of Class 0, 4 PD 11
Layer 2 Function
Management Interface Console, Telnet, Web Browser, SSL, SNMPv1, v2c, v3
Port Configuration Port disable/enable

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Auto-negotiation
10/100/1000Mbps full and half duplex mode selection
Flow Control disable / enable
Port Status Display each port’s speed duplex mode, link status and Flow control status.
Auto negotiation status, trunk status.
Port Mirroring TX / RX / Both
1 to 1 monitor
Bandwidth Control Ingress / Egress Rate Control
•Allow to configure per 128Kbps
VLAN
IEEE 802.1Q Tag-based VLAN, up to 255 VLANs groups, out of 4041 VLAN IDs
Port-based VLAN
Q-in-Q tunneling
GVRP for VLAN Management, up to 128 dynamic VLAN entries
Private VLAN Edge(PVE / Protected port) with two protected port groups
Link Aggregation Static Port Trunk IEEE 802.3ad LACP (Link Aggregation Control Protocol)
Supports 13 groups of 8-Port trunk support
QoS
4 priority queue
Traffic classification based on:
- Port priority
- 802.1p priority
- DSCP/TOS field in IP Packet
IGMP Snooping IGMP (v1/v2) Snooping, up to 256 multicast Groups
Access Control List IP-Based Layer 3 / Layer 4 ACL
Up to 200 ACL rule entries
SNMP MIBs
RFC-1213 MIB-II
RFC-2863 Interface MIB
RFC-2665 EtherLike MIB
RFC-1493 Bridge MIB
RFC-2819 RMON MIB (Group 1, 2, 3,9)
RFC-2737 Entity MIB
POWER-ETHERNET-MIB
Standards Conformance
Standards Compliance
IEEE 802.3
IEEE 802.3u
IEEE 802.3z
IEEE 802.3ab
IEEE 802.3x
IEEE 802.3ad
IEEE 802.1D
IEEE 802.1s
IEEE 802.1p
IEEE 802.1Q
IEEE 802.1x
IEEE 802.3af
IEEE 802.3at
RFC 768
RFC 793
RFC 791
RFC 792
RFC 2068
RFC 1112
RFC 2236
10Base-T
100Base-TX
1000Base-SX/LX
1000Base-T
Flow Control and Back pressure
Port trunk with LACP
Spanning Tree Protocol
Multiple Spanning Tree Protocol
Class of Service
VLAN Tagging
Port Authentication Network Control
Power over Ethernet
Power over Ethernet (Pre-Standard)
UDP
TFTP
IP
ICMP
HTTP
IGMP version 1
IGMP version 2
* With total PoE power output be limited at 360 Watts

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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.
2.1 Hardware Description
2.1.1 Switch Front Panel
The unit front panel provides a simple interface monitoring the switch. Figure 2-1 shows the front panel of the Managed
Switches.
NS2503-24P/2C Front Panel
Figure 2-1:NS2503-24P/2C Front Panel
■ 10/100Mbps TP Interface
Port-1~Port-24: 10/100Base-TX Copper, RJ-45 Twist-Pair: Up to 100 meters.
■ Gigabit TP Interface
Port-25, Port-26: 10/100/1000Base-T Copper, RJ-45 Twist-Pair: up to 100 meters.
■ Gigabit SFP Slots
Port-25, Port-26: 1000Base-SX/LX mini-GBIC slot, SFP (Small Factor Pluggable) transceiver module: From 550 meters
(Multi-mode fiber), up to 10/20/30/40/50/70 kilometers (Single-mode fiber).
■ Console Port
The console port is a DB9, RS-232 male serial port connector. It is an interface for connecting a terminal directly. Through
the console port, it provides rich diagnostic information includes IP Address setting, factory reset, port management, link
status and system setting. Users can use the attached RS-232 cable in the package and connect to the console port on the
device. After the connection, users can run any terminal emulation program (Hyper Terminal, ProComm Plus, Telix,
Winterm, etc. to enter the startup screen of the device.

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■ Reset button
On the left side of the front panel, the reset button is designed for rebooting the Managed Switch without a power cycle.
The following is the summary table of Reset button functions:
Reset Button Pressed and Released Function
About 5 seconds Reboot the Managed Switch.
About 10 seconds
Reset the Managed Switch to Factory Default configuration.
The Managed Switch will then reboot and load the default
settings as below:
。 Default Password: admin
。 Default IP address: 192.168.0.100
。 Subnet mask: 255.255.255.0
。 Default Gateway: 192.168.0.254
2.1.2 LED Indications
The front panel LEDs indicates instant status of port links, data activity and system power; helps monitor and troubleshoot when
needed.
NS2503-24P/2C LED indication
Figure 2-2:NS2503-24P/2C LED Panel
System
LED Color Function
PWR Green Illuminates to indicate that the Switch has power.
SYS Green Illuminates to indicate the system is on.
Alert
LED Color Function
PWR Alert Green Illuminates to indicate that the PoE power supply has failed.
FAN1 Green Illuminates to indicate that the FAN1 has failed.
FAN2 Green Illuminates to indicate that the FAN2 has failed.
FAN3 Green Illuminates to indicate that the FAN3 has failed.

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Per 10/100Mbps port, PoE interfaces (Port-1 to Por-24)
LED Color Function
Illuminates: To indicate the link through that port is successfully established.
LNK/ACT Green Blink: To indicate that the Switch is actively sending or receiving data over that port.
Illuminates: To indicate the port is providing 52V DC in-line power.
PoE In-Use Orange Off: To indicate the connected device is not a PoE Powered Device (PD).
Per 10/100/1000Base-T port / SFP interfaces
LED Color Function
Illuminates: To indicate the link through that port is successfully established with speed
1000Mbps.
Blink: To indicate that the Switch is actively sending or receiving data over that port.
1000
LNK/ACT Green Off: If 10/100 LNK/ACT LED is light, it indicates that the port is operating at
10Mbps or 100Mbps. If LNK/ACT LED is Off, it indicates that the port is link
down.
Illuminates: To indicate the link through that port is successfully established with speed
10Mbps or 100Mbps.
Blink: To indicate that the Switch is actively sending or receiving data over that port.
10/100
LNK/ACT Green Off: If 1000 LNK/ACT LED is ON, it indicates that the port is operating at
1000Mbps.
If 1000 LNK/ACT LED is Off, it indicates that the port is link down.
1. Press the RESET button for 5 seconds. The Managed Switch will reboot automatically.
2. Press the RESET button for 10 seconds. The Managed Switch will restore back to the factory default
mode; the entire configuration will be erased.
3. The 2 Gigabit TP/SFP combo ports are shared with port 25/26 of Managed Switch. Either of them can
operate at the same time.

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2.1.3 Switch Rear Panel
The rear panel of the Managed Switch indicates an AC inlet power socket, which works with an input power range from 100 to
240V AC, 50-60Hz. Figure 2-3 shows the rear panel of the Managed Switch.
NS2503-24P/2C Rear Panel
Figure 2-3: NS2503-24P/2C Rear Panel.
Power Notice:
1. The device requires a power connection to operate. If your networks should active all the time,
please consider using UPS (Uninterrupted Power Supply) for your device. It will prevent you
from network data loss or network downtime.
2. For additional protection against unregulated voltage or current surges, you may also want to
consider surge suppression as part of your installation.

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2.2 Install the Switch
This section describes how to install the Managed Switch and make connections to it. Please read the following topics and
perform the procedures in the order being presented.
2.2.1 Desktop Installation
To install the Managed Switch on desktop or shelf, please follows these steps:
Step1: Attach the rubber feet to the recessed areas on the bottom of the Managed Switch.
Step2: Place the Managed Switch on the desktop or the shelf near an AC power source.
Figure 2-4: Place the Managed Switch on the desktop
Step3: Keep enough ventilation space between the Managed Switch and the surrounding objects.
When choosing a location, please keep in mind the environmental restrictions discussed in
Chapter 1, Section 4, in Product Specification.
Step4: Connect the Managed Switch to network devices.
A. Connect one end of a standard network cable to the 10/100/1000 RJ-45 ports on the front of the Managed Switch
B. Connect the other end of the cable to the network devices such as printer servers, workstations or routers…etc.
Connection to the Managed Switch requires UTP Category 5 network cabling with RJ-45
tips. For more information, please see the Cabling Specification in Appendix A.
Step5: Supply power to the Managed Switch.
A. Connect one end of the power cable to the Managed Switch.
B. Connect the power plug of the power cable to a standard wall outlet.
When the Managed Switch receives power, the Power LED should remain solid Green.