Contents

Preface

11

Safety Symbols Used in this Document

12

Where to Find Web-based Guides

13

Contacting Allied Telesis

14

Online Support

14

Email and Telephone Support

14

Returning Products

14

For Sales or Corporate Information

14

Warranty

14

Chapter 1: Overview

15

Features

16

Port Descriptions

17

Twisted Pair Ports

17

SFP Combo Port

18

LEDs

19

Power Supply

21

Power over Ethernet

22

Power Budgeting

22

Implementation

23

Ethernet Switching Basics

24

MAC Address Table

24

Duplex Mode

24

Store and Forward

25

Back Pressure and Flow Control

26

Network Topologies

27

Power Workgroup Topology

27

PoE Network Topology

28

Chapter 2: Installation

29

Reviewing Safety Precautions

30

Selecting a Site for the Switch

32

Planning the Installation

33

Unpacking the Switch

34

Installing the Switch on a Table or Desktop

35

Mounting the Switch on a Wall

36

Installing the Switch in a Rack

38

Installing an Optional SFP Transceiver

41

Cabling and Powering on the Switch

43

Cabling the Twisted Pair Ports

43

Cabling an SFP Transceiver

44

Powering on the Switch

45

Chapter 3: Troubleshooting

47

PWR LED is Off

47

LNK/ACT Port LED is Off

47

PD ERROR LED is On

48

Appendix A: Technical Specifications

49

Physical Specifications

49

Environmental Specifications

49

5

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Allied Telesis GS900/8POE manual Contents

GS900/8POE specifications

The Allied Telesis GS900/8POE is a versatile and robust switch designed for small to medium-sized enterprises that require reliable network performance combined with power over Ethernet (PoE) capabilities. As part of the GS900 series, this switch offers a range of features, technologies, and characteristics that cater to modern networking demands.

One of the main features of the GS900/8POE is its eight 10/100/1000BASE-T Ethernet ports, which enable seamless connectivity for a variety of devices. Each port is equipped with Power over Ethernet capabilities, allowing the switch to deliver up to 15.4 watts of power per port. This is particularly beneficial for powering devices such as IP cameras, wireless access points, and VoIP phones without the need for additional power sources, minimizing installation costs and clutter.

The GS900/8POE also supports advanced Layer 2 switching capabilities, including VLAN (Virtual Local Area Network) support, which enhances network segmentation and security. By allowing administrators to create isolated networks within a larger network, VLANs reduce broadcast traffic and improve overall performance. Additionally, the switch supports Quality of Service (QoS) features, ensuring that time-sensitive applications, such as video streaming and voice communications, receive priority over less critical data.

Another noteworthy characteristic of the GS900/8POE is its fanless design, which makes it ideal for environments where noise levels need to be kept to a minimum. This design approach not only enhances the aesthetics of the deployment area but also increases reliability by reducing moving parts that could potentially fail.

Security is also a significant focus in the GS900/8POE's design, with features like MAC address filtering and DHCP snooping to protect against unauthorized access and potential network attacks. These safeguards ensure that network administrators can maintain control over connected devices and mitigate risks associated with security breaches.

In summary, the Allied Telesis GS900/8POE switch is a feature-rich solution that meets the demands of modern networks. Its PoE capabilities, advanced Layer 2 features, fanless operation, and robust security measures make it an excellent choice for businesses looking to expand their network infrastructure while keeping operational efficiency and reliability at the forefront. Whether used in a small office setting or for branch locations, the GS900/8POE provides a compelling balance of performance and functionality.