Allied-telesis AT-PBC18 Manual do Utilizador descarregar pdf (Página 45)

PowerBlade PBC18 Installation Guide

Common Features

The following is a list of features common to most PowerBlade Media

Converter modules:

❑ LEDs for unit and port status

❑ MDI/MDI-X feature that eliminates the need for a crossover cable

(except for the AT-PB1000 Series)

❑ Link Test feature performs a link test on the module’s port

❑ MissingLink™ notifies end-nodes of link failures

❑ Half-duplex or full-duplex operation

MDI/MDI-X An RJ-45 port on a 10 Mbps or 100 Mbps Ethernet network device can

have one of two possible wiring configurations: MDI or MDI-X. The RJ-45

port on a PC, router or bridge is typically wired as MDI, while the twisted

pair port on a switch or hub is usually MDI-X.

Note

This feature is available for all PowerBlade modules except for the

AT-PB1000 Series.

To connect two 10 Mbps or 100 Mbps network devices together that

have dissimilar port wiring configurations, such as MDI to MDI-X, you use

a straight-through cable. To connect two network devices that have an

RJ-45 port with the same wiring configuration, such as MDI to MDI, you

use a crossover cable.

The PowerBlade 10 Mbps and 100 Mbps media converters that have an

RJ-45 port feature an MDI/MDI-X button. You can use this button to

configure the twisted pair port on the media converter as either MDI or

MDI-X, thus eliminating the need for a crossover cable regardless of the

type of network device you are connecting to the unit.

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