KB.15.15

Syntax

interface <port-list> mdix-mode [ auto-mdix | mdi | mdix ]

The automatic, default setting. This configures the port for

automatic detection of the cable (either straight-through or

crossover.)

auto-mdix

The manual mode setting that configures the port for

connecting to either a PC or other MDI device with a

mdi

crossover cable, or to a switch, hub, or other MDI-X device

with a straight-through cable.

The manual mode setting that configures the port for

connecting to either a switch, hub, or other MDI-X device

mdix

with a crossover cable, or to a PC or other MDI device

with a straight-through cable.

Syntax

show interfaces config

Lists the current per-port Auto/MDI/MDI-X configuration.

Syntax

show interfaces brief

• Where a port is linked to another device, this command lists the MDI mode the port is currently

using.

• In the case of ports configured for Auto ( auto-mdix), the MDI mode appears as either MDI

or MDIX, depending upon which option the port has negotiated with the device on the other

end of the link.

• In the case of ports configured for MDI or MDIX, the mode listed in this display matches the

configured setting.

• If the link to another device was up, but has gone down, this command shows the last operating

MDI mode the port was using.

• If a port on a given switch has not detected a link to another device since the last reboot, this

command lists the MDI mode to which the port is currently configured.

Example

show interfaces config displays the following data when port A1 is configured for

auto-mdix, port A2 is configured for mdi, and port A3 is configured for mdix:

Configuring auto-MDIX 91