D-Link DSS-16+ Manual de usuario

2D-Link DSS-16+ User Manual

Table of Contents

Product Overview ........................................................3

Package Contents ...................................................3

Setup .......................................................................3

Introduction ..............................................................4

Features ...................................................................8

Hardware Overview .................................................9

Front Panel (LEDs) ............................................ 9

Front Panel (Connections) ...............................10

Unpacking and Setup ................................................11

Setup .....................................................................11

Desktop Installation ...............................................12

Rack Mounting .......................................................13

Installation ..................................................................14

Connecting the Switch ...........................................15

PC to DSS-16+ ................................................ 15

Hub/Switch to DSS-16+ ................................... 15

DSS-16+ to Other Devices ..............................15

Port Speed & Duplex Mode .............................16

Troubleshooting .........................................................17

Technical Speciﬁcations ........................................... 18

DSS-16+ Speciﬁcations ......................................... 18

RJ-45 Pin Speciﬁcations ........................................19

Contacting Technical Support ..................................20

Warranty .....................................................................21

Registration ................................................................ 26

Table of Contents

3D-Link DSS-16+ User Manual

Section 1 - Product Overview

• D-Link DSS-16+ 16-port Switch

• Manual and Warranty on CD

• Four (4) Rubber Feet

• Rack Mount Kit

• Power Adapter

Setup

The setup of the DSS-16+ can be performed using the following steps:

• The power outlet should be within 1.82 meters (6 feet) of the Switch.

• Do not cover the ventilation holes on the sides of the Switch, and make sure there is adequate ventilation

around it.

• Do not place heavy objects on the switch.

Product Overview

Package Contents

4D-Link DSS-16+ User Manual

Section 1 - Product Overview

The D-Link® DSS-16+ unmanaged switch with (16) 10/100BASE-TX ports is a solution for the small business looking

to expand network connectivity at an affordable price. The D-Link Express EtherNetwork® line of products combine

ease of use, with unsurpassed performance for an exceptional value.

Ease of Use

The DSS-16+ is truly a Plug-&-Play switch, with features like:

• Auto Speed Sensing - The Switch senses whether a network device is running at 10Mbps or 100Mbps and

automatically adjusts for optimal performance.

• Auto Negotiation (Full or Half Duplex) - Whether you are running at Half- or in Full-Duplex, the Switch automatically

negotiates and runs the highest supported transmission rate.

• Auto MDI/MDIX Crossover - All ports support auto-negotiating MDI/MDIX detection, which eliminates the need

for crossover cables or uplink ports. Every port can be connected to another switch or PC Station.

The DSS-16+ is the perfect choice for Plug-&-Play support for 10BASE-T and 100BASE-TX networks.

Wire-speed Performance

The DSS-16+ features a non-blocking wire-speed architecture, with a 3.2Gbps switching capacity, for maximum data

throughput. The DSS-16+ also features an integrated universal power supply, and per port diagnostics LEDs that make

it easy to “spot check” for problems. With wire-speed ﬁlltering and Store-and-Forward switching, the DSS-16+ maximizes

network performance while minimizing the propagation of bad network packets.

Quality of Service

The DSS-16+ supports 802.1p Quality of Service (QoS). QoS assists in the prompt delivery of time sensitive data

such as voice, video, and gaming trafﬁc. When frames enter the switch with 802.1p priority tags, they are automatically

placed in one of two built-in hardware queues. Frames with higher priority tags are then passed through the switch

more efﬁciently, helping eliminate jitter and lag in VoIP and multimedia trafﬁc.

Introduction

5D-Link DSS-16+ User Manual

Section 1 - Product Overview

Fast Ethernet Technology

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

for high performance networks. 100BASE-TX (Fast Ethernet) provides a cost-effective and high-performance solution for

small workgroups, SMBs (Small to Medium Businesses), and any network supporting bandwidth-intensive applications.

Fast Ethernet technology operates at 10 times the speed of traditional Ethernet, offering maximum performance and

enhanced capability for existing Ethernet-based networks.

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 hardware, software, and personnel

training.

Switching Technology

Switching is a cost-effective way of increasing the total network capacity available to users on a LAN. If an Ethernet

network begins to display symptoms of congestion, low throughput, slow response times, and high rates of collision,

installing a switch to a network can preserve much or all of the existing network’s cabling and workstation interface card

infrastructure, while still greatly enhancing the throughput for users. A switch is a viable solution even if demanding

applications, such as multimedia production and video conferencing, are on the horizon. The most promising techniques,

as well as the best return on investment, could well consist of installing the right mixture of Ethernet switches.

Exceptional Value

Each DSS-16+ is backed by a 3-Year warranty and comes standard with free 24/7 tech support*. By combining ease

of use, unsurpassed 10/100BASE-TX switching performance, and world-class support, the DSS-16+ raises the

price-performance bar for unmanaged Layer 2 switching.

* Available in USA only

6D-Link DSS-16+ User Manual

Section 1 - Product Overview

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

segments. Dividing a LAN into multiple segments is one of the most common ways of increasing available bandwidth.

If segmented correctly, most network trafﬁc will remain within a single segment, enjoying the full-line speed bandwidth

of that segment.

Switches provide full-line speed and dedicated bandwidth for all connections. This is in contrast to hubs, which use the

traditional shared networking topology, where the connected nodes contend for the same network bandwidth. When

two switching nodes are communicating, they are connected with a dedicated channel between them, so there is no

contention for network bandwidth with other nodes. As a result, the switch reduces considerably, the likelihood of trafﬁc

congestion.

For Ethernet networks, a switch is an effective way of eliminating the problem of chaining hubs beyond the “two-repeater

limit.” A switch can be used to split parts of the network into different collision domains, making it possible to expand

your Ethernet network beyond the 100-meter network diameter limit for 100BASE-TX networks. Switches supporting

both 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for bridging between existing 10Mbps networks and

newer 100Mbps networks.

Switching LAN technology is a marked improvement over the previous generation of network hubs and 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.

7D-Link DSS-16+ User Manual

Section 1 - Product Overview

IEEE802.1P and QoS

The DSS-16+ switch supports 802.1p priority queuing Quality of Service. The implementation of QoS (Quality of Service)

and beneﬁts of using 802.1p priority queuing are described here.

Advantages of QoS

QoS is an implementation of the IEEE 802.1p standard that allows network administrators a method of reserving

bandwidth for important functions that require a large bandwidth or have a high priority, such as VoIP (voice-over Internet

Protocol), web browsing applications, ﬁle server applications or video conferencing. Not only can a larger bandwidth

be created, but other less critical trafﬁc can be limited, so bandwidth can be saved. The switch has separate hardware

queues on every physical port to which packets from various applications are mapped to and assigned a priority.

Mapping QoS on the Switch

In order to implement QoS, the switch will examine the header of a packet to see if it has the proper identifying tag

tagged. Then the switch forwards these tagged packets to designated queues on the switch where they will be emptied,

based on priority.

“The DUT supports strict mode for 802.1p QoS. An untagged packet will follow priority 0 to work (i.e. class 0).”

Understanding QoS

The switch has two priority queues labeled 1 (higher queue), and 0 (lower queue). The eight priority tags, speciﬁed in

IEEE 802.1p are mapped to the Switch’s priority tags as follows:

Priority 0 is assigned to the Switch’s Q0 queue.

Priority 1 is assigned to the Switch’s Q0 queue.

Priority 2 is assigned to the Switch’s Q0 queue.

Priority 3 is assigned to the Switch’s Q0 queue.

Priority 4 is assigned to the Switch’s Q1 queue.

Priority 5 is assigned to the Switch’s Q1 queue.

Priority 6 is assigned to the Switch’s Q1 queue.

Priority 7 is assigned to the Switch’s Q1 queue.

The switch uses strict priority for Scheduling. In strict priority-based scheduling, any packets residing in the higher

priority queues are transmitted ﬁrst.

8D-Link DSS-16+ User Manual

Section 1 - Product Overview

Features

The DSS-16+ is designed for easy installation and high performance in an environment where trafﬁc on the network

and the number of users increase continuously.

• 16-port 10/100BASE-TX Ethernet Switch with RJ-45 connectors

• Supports Auto-negotiation of speed and duplex modes for each port

• Supports Auto-MDI/MDI-X for each port

• Wire speed reception and transmission

• Store-and-Forward switching method

• Integrated address Look-Up Engine, supports 8K absolute MAC addresses

• 802.1p Priority Queuing for mission critical applications

• Front-panel diagnostic LEDs

• IEEE 802.3x ﬂow control for full-duplex

• Back pressure ﬂow control for half-duplex

9D-Link DSS-16+ User Manual

Section 1 - Product Overview

Hardware Overview

Front Panel (LEDs)

Power:

This indicator lights green when the switch is receiving power; otherwise, it is off.

Link / Act (Link/Activity):

This indicator lights on when the port is connected to a Fast Ethernet or Ethernet device; if the light is blinking, it indicates

that data is being transmitted or received.

FDX / Col (Full-duplex/Collision):

This LED indicator lights green when a respective port is in full duplex (FDX) operation mode. Otherwise, it is blinking

when collisions are occurring on the respective port in half duplex operation mode.

100Mbps:

This LED indicator lights green when the port is connected to a 100Mbps Fast Ethernet station. Otherwise, the LED

is off when the port is connected to a 10Mbps Ethernet device.

10D-Link DSS-16+ User Manual

Section 1 - Product Overview

Auto MDI/MDI-X Ports (1-16):

All ports support automatic MDI/MDI-X crossover detection. The AutoMDI/MDI-X function makes it simple to connect

to the switch—just plug either a Crossover or Straight-Through CAT5 cable into any port.

AC Power Jack (on back):

Power is supplied through an external AC power adapter. Check the technical speciﬁcation section for information

about the AC power input voltage.

Since the DSS-16+ does not require a power button, plugging its power adapter into a power outlet will immediately

power it on.

Front Panel (Connections)

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