Port Status and Configuration

Viewing Port Status and Configuring Port Parameters

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 following port types on your switch support the IEEE 802.3ab standard, which includes the “Auto MDI/MDI-X” feature:

■10/100-TX module ports

■100/1000-T module ports

■10/100/1000-T module ports

Using the above ports:

■If you connect a copper port using a straight-through cable on a switch to a port on another switch or hub that uses MDI-X ports, the switch port automatically operates as an MDI port.

■If you connect a copper port using a straight-through cable on a switch to a port on an end node, such as a server or PC, that uses MDI ports, the switch port automatically operates as an MDI-X port.

ProCurve Auto-MDIX was developed for auto-negotiating devices, and was shared with the IEEE for the development of the IEEE 802.3ab standard. ProCurve Auto-MDIX and the IEEE 802.3ab Auto MDI/MID-X feature are completely compatible. Additionally, ProCurve Auto-MDIX supports opera­ tion 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 titled “Switch Ports and Network Cables” in the Installation and Getting Started Guide for your switch.

Manual Override. If you require control over the MDI/MDI-X feature you can set the switch to either of two non-default modes:

■Manual MDI

■Manual MDI-X

Table 10-4shows the cabling requirements for the MDI/MDI-X settings.

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