Allied Telesis XEM-12T-N Посібник з монтажу - Сторінка 7

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SFP Ports

The 12-port 1000BASE-X expansion module, model XEM-12S, features the

following:

■

two rows of 6 SFP ports

■

support for hot-swappable SFP modules

■

status LEDs

■

two 16MByte DDR-SDRAM for packet buffering

■

NEBS compliant

■

cable fault detection and distance-to-fault diagnostics for copper SFP ports

(see the Test Facility chapter in the Software Reference for the switch)

Front view XEM-12S

PORTS 1-12

The following LEDs report operations on XEM-12S expansion modules.

LED

State

L/A

Green

(Link Activity)

Green flashing

Amber

Amber flashing

SFP

LINK

ACT

INSTALLED

Description

An SFP transceiver is installed and a link has

been established.

An SFP transceiver is installed and link

activity is occurring.

An SFP transceiver is installed but a link has

not been established.

An SFP is installed but there is a transmission

fault.

Installation Guide

FAULT