HP 5300 Informacje Techniczne Pobierz pdf (Strona 186)

Port Status and Basic Configuration

Viewing Port Status and Configuring Port Parameters

Configuring HP Auto-MDIX

Copper ports on HP ProCurve 5300 Switches can automatically detect the type

of cable configuration (MDI or MDI-X) on a connected device and adjusts to

operate appropriately.

This means you can use a “straight-through” twisted-pair cable or a “cross-

over” twisted-pair cable for any of the connections—the port makes the

necessary adjustments to accommodate either one for correct operation. The

10/100-TX XL, the 100/1000-T XL, and the new 10/100/1000-T XL Modules for

the HP ProCurve 5300 Switch support the IEEE 802.3ab standard; that stan-

dard includes the “Auto MDI/MDI-X” feature, which operates the same way.

If you connect a twisted-pair port to another switch or hub using MDI-X ports,

the Series 5300XL Switch port automatically operates as an MDI port.

If you connect it to an end node, such as a server or PC, with an MDI port, the

Series 5300XL Switch port operates as an MDI-X port.

HP Auto-MDIX was developed for auto-negotiating devices and shared with

the IEEE for the development of the IEEE 802.3ab standard. HP Auto-MDIX

and the IEEE 802.3ab Auto MDI/MID-X feature are completely compatible.

Additionally, HP Auto-MDIX supports operation in forced speed and duplex

modes.

If you want more information on this subject please refer to the IEEE 802.3ab

Standard Reference.

For more information on MDI-X, refer to the Appendix on Switch Ports and

Network Cables in the HP ProCurve Series 5300XL Switches Installation and

Getting Started Guide.

Manual Override. If you require control over the MDI/MDI-X feature you can

set the switch to one of three modes:

• Auto-MDIX (the default)

• Manual MDI

– Configures the port to require a crossover cable when connected

to a PC or other MDI device

• Manual MDI-X

– Configures the port to require a straight-through cable when

connected to a switch, hub, or other MDI-X device

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HP 5300 Informacje Techniczne Strona 186