ZyXEL GS-1548 User Manual download pdf (Page 36)

Chapter 3 Hardware Overview

GS-1524/GS-1548 User’s Guide

The following table describes the ports on the panels.

3.1.1 Ethernet Ports

The GS-1524 has 24 auto-negotiating, auto-crossover RJ-45 Gigabit Ethernet ports.

The GS-1548 has 48 auto-negotiating, auto-crossover RJ-45 Gigabit Ethernet ports.

The speed of the Gigabit Ethernet ports can be 10 Mbps, 100Mbps or 1000Mbps and the

duplex mode can be half duplex (at 100 Mbps) or full duplex.

An auto-negotiating port can detect and adjust to the optimum Ethernet speed (100/

1000Mpbs) and duplex mode (full duplex or half duplex) of the connected device.7

An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or

crossover Ethernet cable.

3.1.1.1 Default Ethernet Settings

The factory default negotiation settings for the Ethernet ports on the Switch are:

• Speed: Auto

• Duplex: Auto

• Flow control: Off

3.1.2 Mini-GBIC Slots

There are four mini-GBIC (Gigabit Interface Converter) slots for mini-GBIC transceivers. A

transceiver is a single unit that houses a transmitter and a receiver. The Switch does not come

with transceivers. You must use transceivers that comply with the SFP Transceiver

MultiSource Agreement (MSA). See the SFF committee’s INF-8074i specification Rev 1.0 for

details.

You can change transceivers while the Switch is operating. You can use different transceivers

to connect to Ethernet switches with different types of fiber-optic connectors.

• Type: SFP connection interface

• Connection speed: 1 Gigabit per second (Gbps)

" To avoid possible eye injury, do not look into an operating fiber-optic module’s

connectors.

3.1.2.1 Transceiver Installation

Use the following steps to install a mini GBIC transceiver (SFP module).

Table 1 Panel Connections

CONNECTOR DESCRIPTION

RJ-45 Gigabit

Ethernet Ports

Connect these Gigabit Ethernet ports to high-bandwidth backbone network Ethernet

switches or use them to daisy-chain other switches.

Mini-GBIC

Slots

Use mini-GBIC transceivers in these slots for fiber-optic connections to backbone

Ethernet switches.

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 169 170

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ZyXEL GS-1548 User Manual Page 36