Cisco Catalyst 250 Series Configuration Guide

Information about Configuring Auto-MDIX
Auto-MDIX on an Interface
When automatic medium-dependent interface crossover (auto-MDIX) is enabled on an interface, the interface
automatically detects the required cable connection type (straight through or crossover) and configures the
connection appropriately. When connecting switches without the auto-MDIX feature, you must use
straight-through cables to connect to devices such as servers, workstations, or routers and crossover cables
to connect to other switches or repeaters. With auto-MDIX enabled, you can use either type of cable to connect
to other devices, and the interface automatically corrects for any incorrect cabling. For more information about
cabling requirements, see the hardware installation guide.
This table shows the link states that result from auto-MDIX settings and correct and incorrect cabling.
Table 7: Link Conditions and Auto-MDIX Settings
With Incorrect CablingWith Correct CablingRemote Side Auto-MDIXLocal Side Auto-MDIX
Link upLink upOnOn
Link upLink upOffOn
Link upLink upOnOff
Link downLink upOffOff
How to Configure Auto-MDIX
Configuring Auto-MDIX on an Interface
SUMMARY STEPS
1.
configure terminal
2.
interface interface-id
3.
speed auto
4.
duplex auto
5.
mdix auto
6.
end
Catalyst 2960-XR Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX1
44 OL-29420-01
Configuring Auto-MDIX
Information about Configuring Auto-MDIX

Cisco Catalyst 250 Series Specifications

General

Brand	Cisco
Model	Catalyst 250 Series
Category	Switch
Language	English