auto-mdix
The automatic,default setting. This configures the port for automatic detection of the cable
(either straight-through or crossover).
mdi
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
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.
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.
The 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:
Displaying the current MDI configuration
switch(config)# show interfaces config
Port Settings
Port Type | Enabled Mode Flow Ctrl MDI
------ --------- + ------- ------------ --------- ----
A1 10GbE-T | Yes Auto Disable Auto
A2 10GbE-T | Yes Auto Disable MDI
A3 10GbE-T | Yes Auto Disable MDIX
A4 10GbE-T | Yes Auto Disable Auto
A5 10GbE-T | Yes Auto Disable Auto
A6 10GbE-T | Yes Auto Disable Auto
A7 10GbE-T | Yes Auto Disable Auto
A8 10GbE-T | Yes Auto Disable Auto
Chapter 3 Port Status and Configuration 73
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