HP 2910AL - Manual (Page 233)

Port Status and Configuration
Viewing Port Status and Configuring Port Parameters
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 10-4 shows the cabling requirements for the MDI/MDI-X settings.
Table 10-4. Cable Types for Auto and Manual MDI/MDI-X Settings
MDI/MDI-X Device Type
Setting PC or Other MDI Device Type Switch, Hub, or Other MDI-X Device
Manual MDI Crossover Cable Straight-Through Cable
Manual MDI-X Straight-Through Cable Crossover Cable
Auto-MDI-X
(The Default) Either Crossover or Straight-Through Cable
The Auto-MDIX features apply only to copper port switches using twisted-pair
copper Ethernet cables.
Syntax: interface < port-list > mdix-mode < auto-mdix | mdi | mdix >
auto-mdix is the automatic, default setting. This configures the
port for automatic detection of the cable (either straight-through
or crossover).
mdi is the manual mode setting that configures the port for
connecting to either a PC or other MDI device with a crossover
cable, or to a switch, hub, or other MDI-X device with a straight-
through cable.
mdix is the manual mode setting that configures the port for
connecting to either a switch, hub, or other MDI-X device with
a crossover cable, or to a PC or other MDI device with a straight-
through cable.
10-19