HP ProCurve 1600M Manuale di installazione - Pagina 17

Installing the GL Modules

N o t e

Automatic Cable Sensing on Twisted Pair Ports:

When the ports for the 10/100-TX GL Module and the 100/1000-T GL Module

are in their default configuration, Auto , both modules automatically negotiate

whether the ports operate as MDI or MDI-X, depending on the cable type and

the connected device's operation. As a result, you can use either "straight-

through" or "crossover" twisted-pair cable for all network connections to

these modules.

On the 10/100-TX XL Module, this feature is identified as HP Auto-MDIX; on

the 100/1000-T XL Module, it is identified as Auto MDI/MDI-X and it is part

of the IEEE 802.3ab standard. Both features operate the same.

Operation of this feature depends on the port configurations being kept at Auto .

If the configuration is changed to one of the available fixed options though

(for example, 100-Full Duplex), the port operates as an MDI-X port. In that

case, to connect the module to another switch or hub, use a crossover cable;

to connect to an end node, use a straight-through cable.