ZyXEL Communications GS-1524 / GS-1548 Manual De Usuario

Chapter 3 Hardware Overview

GS-1524/GS-1548 User’s Guide

The following table describes the ports on the panels. 

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.

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

• Speed: Auto
• Duplex:  Auto
• Flow control: Off

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. 

Table 1   Panel Connections 

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.