NetComm NP2500 User Manual

Contents

ABOUT THIS GUIDE ................................................................................................................................ 4

Purpose ............................................................................................................................. 4

Terms/Usage ......................................................................................................................

INTRODUCTION ...................................................................................................................................... 5

Fast Ethernet Technology ....................................................................................................

Gigabit Ethernet Technology ................................................................................................

Switching Technology .........................................................................................................

VLAN (Virtual Local Area Network) .......................................................................................

Power over Ethernet (PoE) ................................................................................................... 6

Features ............................................................................................................................

UNPACKING AND INSTALLATION .............................................................................................................

Unpacking ......................................................................................................................... 8

Installation .........................................................................................................................

Installing the Switch on a Desktop ....................................................................................... 9

Installing the Switch on a Rack ............................................................................................ 9

Connecting Network Cable ................................................................................................

IDENTIFYING EXTERNAL COMPONENTS ................................................................................................ 13

Front Panel ...................................................................................................................... 13

Rear Panel ....................................................................................................................... 14

UNDERSTANDING LED INDICATORS ......................................................................................................

CONFIGURATION ..................................................................................................................................

Installing the Web Management Utility ...............................................................................

Discovery List ..................................................................................................................

Monitor List ..................................................................................................................... 19

View Trap .........................................................................................................................

Web Access .....................................................................................................................

Conﬁguring the Switch ...................................................................................................... 23

Setup Menu ..................................................................................................................... 24

Conﬁguring Setup Setting .................................................................................................25

Port Settings .................................................................................................................... 25

VLAN Settings (Virtual Local Area Network) ........................................................................

Trunk Setting ...................................................................................................................

PoE Setting ...................................................................................................................... 30

Device Status ...................................................................................................................

Statistic ..........................................................................................................................

System Setting ................................................................................................................ 34

2 NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch User Guide YML842 Rev1

APPENDIX A Technical Speciﬁcations .................................................................................................... 38

APPENDIX B Cable Information ............................................................................................................. 41

RJ-45 Network Ports ....................................................................................................... 41

Straight and crossover cable conﬁguration ........................................................................

Straight-Through Cabling ..................................................................................................

Cross-Over Cabling ..........................................................................................................

APPENDIX C Registration and Warranty Information ............................................................................... 43

Contact Information ..........................................................................................................

Copyright Information .......................................................................................................

Customer Information .......................................................................................................

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4 NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch User Guide YML842 Rev1

ABOUT THIS GUIDE

Congratulations on your purchase of the NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART

Switch. This Switch integrates 100Mbps Fast Ethernet and 10Mbps Ethernet network capabilities in a highly

ﬂexible package. Since this Switch’s Port-1 to Port-24 are Power over Ethernet (PoE) ports, it will automati-

cally detect the presence of IEEE 802.3af-compliant devices and will provide power through these PoE ports.

The Switch provides up to 15.4Watts per port and can be connected to WLAN access point, IP phone, video

camera, and other PD devices. The Switch will automatically detect the network appliance’s requirements,

and the Switch will supply the required power current to each appliance.

Purpose

This guide discusses how to install your NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART

Switch.

Terms/Usage

In this guide, the term “Switch” (ﬁrst letter upper case) refers to your NP2500 24-Port 10/100 PoE + 2-Port

10/100/1000 WebSMART Switch and “switch” (ﬁrst letter lower case) refers to other Ethernet switches.

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INTRODUCTION

This chapter describes the features of the

NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 Web-

SMART Switch

and some background information about Fast Ethernet, Gigabit Ethernet, Switching, VLAN

and Power over Ethernet technologies.

Fast Ethernet Technology

The growing importance of LANs and the increasing complexity of desktop computing applications are

fueling the need for high performance networks. A number of high-speed LAN technologies have been

proposed to provide greater bandwidth and improve client/server response times. Among them, 100BASE-

T (Fast Ethernet) provides a non-disruptive, smooth evolution from the current 10BASE-T technology. The

non-disruptive and smooth evolution nature, and the dominating potential market base, virtually guarantees

cost-effective and high performance Fast Ethernet solutions.

100Mbps Fast Ethernet is a standard speciﬁed by the IEEE 802.3 LAN committee. It is an extension of the

10Mbps Ethernet standard with the ability to transmit and receive data at 100Mbps, while maintaining the

CSMA/CD Ethernet protocol. Since the 100Mbps Fast Ethernet is compatible with all other 10Mbps Ethernet

environments, it provides a straightforward upgrade and takes advantage of the existing investment in hard-

ware, software, and personnel training.

Gigabit Ethernet Technology

Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and sup-

port for CSMA/CD protocol, full duplex, ﬂow control, and management objects, but with a tenfold increase in

theoretical throughput over 100Mbps Fast Ethernet and a one hundred-fold increase over 10Mbps Ethernet.

Since it is compatible with all 10Mbps and 100Mbps Ethernet environments, Gigabit Ethernet provides a

straightforward upgrade without wasting a company’s existing investment in hardware, software, and trained

personnel. The increased speed and extra bandwidth offered by Gigabit Ethernet are essential to coping

with the network bottlenecks that frequently develop as computers and their busses get faster and more

users use applications that generate more trafﬁc. Upgrading key components, such as your backbone and

servers to Gigabit Ethernet can greatly improve network response times as well as signiﬁcantly speed up the

trafﬁc between your sub-networks. Gigabit Ethernet enables fast optical ﬁber connections to support video

conferencing, complex imaging, and similar data-intensive applications. Likewise, since data transfers occur

10 times faster than Fast Ethernet, servers outﬁtted with Gigabit Ethernet NIC’s are able to perform 10 times

the number of operations in the same amount of time. In addition, the phenomenal bandwidth delivered by

Gigabit Ethernet is the most cost-effective method to take advantage of today and tomorrow’s rapidly improv-

ing switching and routing internetworking technologies.

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Switching Technology

Another approach to pushing beyond the limits of Ethernet technology is the development of switching

technology. A switch bridges Ethernet packets at the MAC address level of the Ethernet protocol transmitting

among connected Ethernet or Fast Ethernet LAN segments.

Switching is a cost-effective way of increasing the total network capacity available to users on a local area

network. A switch increases capacity and decreases network loading by dividing a local area network into

different segments, which do not compete with each other for network transmission capacity.

The switch acts as a high-speed selective bridge between the individual segments. The switch, without inter-

fering with any other segments, automatically forwards trafﬁc that needs to go from one segment to another.

By doing this the total network capacity is multiplied, while still maintaining the same network cabling and

adapter cards.

Switching LAN technology is a marked improvement over the previous generation of network bridges, which

were characterized by higher latencies. Routers have also been used to segment local area networks, but the

cost of a router, the setup and maintenance required make routers relatively impractical. Today switches are

an ideal solution to most kinds of local area network congestion problems.

VLAN (Virtual Local Area Network)

A VLAN is a group of end-stations that are not constrained by their physical location and can communicate

as if a common broadcast domain, a LAN. The primary utility of using VLAN is to reduce latency and need for

routers, using faster switching instead. Other VLAN utility includes:

Security, Security is increased with the reduction of opportunity in eavesdropping on a broadcast network

because data will be switched to only those conﬁdential users within the VLAN.

Cost Reduction, VLANs can be used to create multiple broadcast domains, thus eliminating the need of

expensive routers.

Port-based (or port-group) VLAN is the common method of implementing a VLAN, and is the one supplied in

the Switch.

Power over Ethernet (PoE)

Power over Ethernet (PoE) integrates power and data onto one single cabling infrastructure, eliminating the

need to have AC power available at all locations.

Power and Data are integrated onto the same cable. Supporting category 5/5e up to 100 Meters, PoE will

provide power to PoE compatible device, such as IP telephones, wireless LAN access points, and IP security

cameras.

PoE is already widely adopted in the market, saving up to 50% of overall installation costs by eliminating the

need to install separate electrical wiring and power outlets.

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Features

• 24×10/100Mbps Auto-negotiation Fast Ethernet RJ-45 ports PoE enabled

• 2 x 1000BASE-T Gigabit Ethernet ports

• Compliant with 802.3af speciﬁcation

• Supports PoE power up to 15.4W for each PoE port

• Supports PoE power maximum 170W for the device

• Supports PoE Powered Device (PD) classiﬁcation identify

• Each port supports auto MDI/MDIX, so there is no need to use cross-over cables or an up-link port

• Full-duplex transfer mode for speed of 10Mbps, 100Mbps and 1000Mbps

• Half- duplex transfer mode for speed of 10Mbps and 100Mbps

• Wire speed reception and transmission

• Store-and-Forward switching scheme capability to support rate adaptation and ensure data integrity

• Up to 4K unicast addresses entities per device, self-learning, and table aging

• 768KBytes packet buffer

• Supports IEEE 802.3x ﬂow control for full-duplex mode ports

• Supports Back-pressure ﬂow control for half-duplex mode ports

• Supports Port-based VLAN

• Supports Port-based Trunking

• Supports Port-mirroring

• Supports Port-setting for Speed/Disable, Flow control and Port based QoS (Quality of Service)

• Easy conﬁguration via Web Browser

• Easy setting via Web Management Utility

• Standard 19” Rack-mount size

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UNPACKING AND INSTALLATION

This chapter provides unpacking and installation information for the Switch.

Unpacking

Open the shipping cartons of the Switch and carefully unpacks its contents. The carton should contain the

following items:

• One NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch

• One AC power cord, suitable for your area’s electrical power connections

• Four rubber feet to be used for shock cushioning

• Screws and two mounting brackets

• CD-ROM with Web Management Utility and Manual

If any item is found missing or damaged, please contact NetComm immediately.

Installation

The site where you install the hub stack may greatly affect its performance. When installing, consider the

following pointers:

• Install the Switch in a fairly cool and dry place. See Technical Speciﬁcations for the acceptable tempera-

ture and humidity operating ranges.

• Install the Switch in a site free from strong electromagnetic ﬁeld generators (such as motors), vibration,

dust, and direct exposure to sunlight.

• Leave at least 10cm of space at the front and rear of the hub for ventilation.

• Install the Switch on a sturdy, level surface that can support its weight, or in an EIA standard-size equip-

ment rack. For information on rack installation, see the next section, titled Rack Mounting.

• When installing the Switch on a level surface, attach the rubber feet to the bottom of each device. The

rubber feet cushion the hub and protect the hub case from scratching.

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Installing the Switch on a Desktop

When installing the Switch on a desktop or shelf, the rubber feet included with the Switch should ﬁrst be

attached. Attach these cushioning feet on the bottom at each corner of the device. Allow enough ventilation

space between the Switch and any other objects in the vicinity.

Figure 1. Installed on a Desktop

Installing the Switch on a Rack

The Switch can be mounted in an EIA standard-size, 19-inch rack, which can be placed in a wiring closet

with other equipment. Attach the mounting brackets at the Switch’s front panel (one on each side), and

secure them with the provided screws.

Figure 2. Combine the Switch with the provided screws.

Then, use screws provided with the equipment rack to mount each switch in the rack.

Figure 3. Mount the Switch in the rack.

10 NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch User Guide YML842 Rev1

NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch User Guide 11 YML842 Rev1

Connecting Network Cable

The Switch supports 24 10/100BASE-TX Fast Ethernet PoE enabled ports and 2 1000BASE-T Gigabit

Ethernet ports. These 24 PoE ports will be automatically activated when a compatible terminal is identiﬁed.

The Switch will supply power through the PoE port to the connected PD.

For Legacy devices that are not yet compatible, the PoE port will not offer the power to these devices. This

feature allows users to freely and safely mix legacy and Power over Ethernet compatible devices on their

network.

The Switch supports 10Mbps Ethernet or 100Mbps Fast Ethernet and it runs both in half- and full- duplex

mode using two pairs of Category 5 cables.

The Switch also supports 2 1000BASE-T Gigabit Ethernet ports; When using the RJ-45 ports, it runs in

Auto-negotiation mode and 10Mbps Ethernet or 100Mbps Fast Ethernet that runs both in half and full duplex

mode and 1000Mbps Gigabit Ethernet runs in full duplex mode using four pair Category 5.

These RJ-45 ports are Auto-MDI type port. The Switch can auto transform to MDI-II or MDI-X type, so you

can just make an easy connection that without worrying if you are using a standard or crossover RJ-45

cable.

Figure 4. Connecting Network Cable

12 NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch User Guide YML842 Rev1

AC Power

The Switch uses the AC power supply 100-240V AC, 50-60 Hz. The power switch is located at the rear of

the unit adjacent to the AC power connector and the system fan. The Switch’s power supply will adjust to

the local power source automatically and may be turned on without having any or all LAN segment cables

connected.

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IDENTIFYING EXTERNAL COMPONENTS

This chapter describes the front panel, rear panel, and LED indicators of the Switch.

Front Panel

The ﬁgure below shows the front panels of the Switch.

Figure 5. Front panel view

LED Indicator:

Comprehensive LED indicators display the status of the Switch and the network

(see the LED Indicators chapter below).

10/100Mbps PoE

Ports (Port 1~24):

These ports are PoE enable ports. These PoE ports will be automatically

activated when a compatible terminal is identiﬁed, and the PoE port will supply

power to the connected PoE device.

The Switch PoE function supports PoE ports priority management. When the sys-

tem power is shortage with the PD, the Switch will enforce the PoE port priority

management, the lower port number will have the higher priority than the higher

port number, Port 1 > Port 2 > … > Port 24.

For legacy devices that are not yet compatible, the PoE port will not offer the

power to these devices. This feature allows users to freely and safely mix legacy

and Power over Ethernet compatible devices on their network.

These ports support network speeds of either 10Mbps or 100Mbps, and can

operate in half- and full- duplex transfer modes. These ports also support the

automatic MDI/MDIX crossover detection function, providing true “plug and play”

capability. Just plug-in the network cable to the hub directly and regardless if the

end node is a NIC (Network Interface Card) or switch and hub.

1000BASE-T Gigabit

Ethernet Ports (Port

25~26):

The Switch is equipped with two Gigabit twisted pair ports, supported auto

negotiable 10/100/1000Mbps and auto MDI/MDIX crossover detection function.

These two ports can operate in half-duplex mode for 10/100Mbps and full-du-

plex mode for 10/100/1000Mbps.

Note: When the port was set to “Forced Mode”, the Auto MDI/MDIX will be

disabled.

Reset:

The Reset button is to reset all settings back to the factory defaults.

Note: Be sure that you recorded the settings of your device, else all settings will

be erased when pressing the “Reset” button.

14 NP2500 24-Port 10/100 PoE + 2-Port 10/100/1000 WebSMART Switch User Guide YML842 Rev1

Rear Panel

Figure 6. Rear panel of the Switch

AC Power Connector: This is a three-pronged connector that supports the power cord. Plug in the female

connector of the provided power cord into this connector, and the male into a power outlet. Supported input

voltages range from 100-240V AC at 50-60Hz.

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