How to Configure Auto-MDIX | Cisco Systems WSC2960X48TDL guide

Configuring Auto-MDIX

Information about Configuring Auto-MDIX

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
Local Side Auto-MDIX	Remote Side Auto-MDIX	With Correct Cabling	With Incorrect Cabling
On	On	Link up	Link up
On	Off	Link up	Link up
Off	On	Link up	Link up
Off	Off	Link up	Link down

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-X Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX
42	OL-29034-01

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Cisco Systems WSC2960X48TDL Information about Configuring Auto-MDIX, How to Configure Auto-MDIX, Auto-MDIX on an Interface

Contents

Americas Headquarters First Published July 10Page N T E N T S Contents Configuring Auto-MDIX41 Configuring System MTU Configuring EEE Viii Document Conventions Convention DescriptionBold font Vertical bars ElementReader Alert Conventions Obtaining Documentation and Submitting a Service Request Related Documentation Xii Information About Using the Command-Line Interface Command ModesThis chapter contains the following topics Quit Mode Access Method Prompt Exit Method About This ModeConfigure Ctrl-Z Mode Using the Help SystemCommand or Action Purpose Step Help Understanding Abbreviated Commands No and default Forms of CommandsCLI Error Messages Configuring the Command History How to Use the CLI to Configure FeaturesConfiguration Logging Error Message Meaning Changing the Command History Buffer Size Recalling CommandsCommand or Action Privileged Exec mode Enabling and Disabling Editing FeaturesDisabling the Command History Feature Terminal no history Editing Commands through Keystrokes Editing Command Lines That Wrap Show more command begin include exclude regular-expression Searching and Filtering Output of show and more CommandsAccess-list Show more command begin include exclude Command or Action Example OL-29034-01 Interface Types Finding Feature InformationInformation About Configuring Interface Characteristics This module contains the following topics Switch Ports Port-Based VLANs Switch Virtual Interfaces Trunk Ports Power over Ethernet Ports EtherChannel Port Groups Using the Switch USB Ports USB Mini-Type B Console Port Interface Connections USB Type a Ports Interface Configuration Mode Connecting VLANs with the Switch Default Setting Default Ethernet Interface ConfigurationFeature Layer 2 or switching mode switchport command VLANs 1 Interface Speed and Duplex Mode Speed and Duplex Configuration Guidelines Ieee 802.3x Flow Control Gigabit Ethernet port 1 on switch 1 is selected How to Configure Interface CharacteristicsConfiguring Interfaces Procedure Either gigabitethernet 1/0/1 Description string Configure terminalAdding a Description for an Interface Show interfaces interface-id description Configuring a Range of Interfaces Configure terminal Enters global configuration modeInterface range port-rangemacro Configuring and Using Interface Range Macros Verifies the configuration of the interfaces in the rangeDefine interface-range macroname Configuring Ethernet Interfaces Setting the Interface Speed and Duplex ParametersInterface range macro macroname Speed 10 100 1000 auto 10 Nonegotiate Configuring Ieee 802.3x Flow Control Command or Action Purpose Configuring SVI Autostate Exclude End Returns to privileged Exec modeEnter interface configuration mode An SVI line state up or down Switchport autostate excludeShutting Down and Restarting the Interface Interface vlan vlan-id gigabitethernet interface-id Configure terminal Line console Media-type rj45 End Configuring the Console Media TypeThis configuration applies to all switches in a stack Shutdown Shuts down an interface Configuring the USB Inactivity Timeout Configure terminal Enters the global configuration mode Show interfaces interface-id status err-disabled Monitoring Interface CharacteristicsCommand Purpose Show interfaces interface-id switchport Clearing and Resetting Interfaces and Counters Configuring a Range of Interfaces Examples Configuration Examples for Interface CharacteristicsIdentifying Interfaces on a Stack-Capable Switch Examples Adding a Description to an Interface Example Configuring and Using Interface Range Macros Examples Setting Interface Speed and Duplex Mode ExampleConfiguring the Console Media Type Example Standards and RFCs Standard/RFC Configuring the USB Inactivity Timeout ExampleTo disable the configuration, use these commands None Cisco IOS Release 15.02EX This feature was introduced Technical Assistance Description LinkRelease Modification OL-29034-01 Prerequisites for Auto-MDIX Restrictions for Auto-MDIXThis module contains the following sections Configuring Auto-MDIX on an Interface Information about Configuring Auto-MDIXHow to Configure Auto-MDIX Auto-MDIX on an Interface Monitoring Auto-MDIX Example for Configuring Auto-MDIX This example shows how to enable auto-MDIX on a port Prerequisites for Ethernet Management Ports Information about the Ethernet Management Port Ethernet Management Port Direct Connection to a Switch Supported Features on the Ethernet Management Port How to Configure the Ethernet Management Port Disabling and Enabling the Ethernet Management Port Additional References What to Do Next MIBs Bootloader commandsRelated Topic Document Title OL-29034-01 Configuring LLDP, LLDP-MED, and Wired Location Service Lldp and Cisco Switch Stacks Lldp Supported TLVsLldp and Cisco Medianet LLDP-MED Supported TLVs Wired Location Service Default Lldp Configuration Configuration Guidelines LLDP, and enter interface configuration mode Configure terminal Lldp runLldp run Enables Lldp globally on the switch Enabling Lldp Lldp receive Enables the interface to receive Lldp packets Configuring Lldp CharacteristicsLldp transmit Enables the interface to send Lldp packets Show lldp Verifies the configuration Switchconfig# lldp holdtime Configuring LLDP-MED TLVs Command or Action Purpose Step Lldp med-tlv-select End Copy running-config startup-config Lldp med-tlv-select Specifies the TLV to enable Configuring Network-Policy TLV Configuration mode. The range is 1 to Voice voice-signalingvlan vlan-idcos Dscp dvalue none untagged Configuring Location TLV and Wired Location Service Show network-policy profile Verifies the configuration Use one of the following Way Use one of the following Verifies the configuration Exit Returns to global configuration modeInformation, and enter interface configuration mode Enters location information for an interface Enabling Wired Location Service on the Switch Command or Action Purpose Example Configuring Network-Policy TLV Examples Nmsp enable Enables the Nmsp features on the switchNmsp notification interval attachment location Command Description Civic location OL-29034-01 Information about the MTU System MTU Guidelines How to Configure MTU Sizes Configuring the System MTU Configuration Examples for System MTU Show system mtu Verifies your settingsReload Reloads the operating system Additional References for System MTU Configuring PoE Restrictions for PoE Power over Ethernet Ports Information about PoESupported Protocols and Standards Powered-Device Detection and Initial Power Allocation Class Power Management Modes Power Monitoring and Power Policing Maximum Power Allocation Cutoff Power on a PoE Port How to Configure PoE Configuring a Power Management Mode on a PoE Port Budgeting Power for Devices Connected to a PoE Port Show power inlineNever static max max-wattage Budgeting Power to All PoE ports No cdp run Optional Disables CDP Budgeting Power to a Specific PoE Port Configure terminal No cdp run Configuring Power Policing Specifies the physical port to be configured, and enterPower inline consumption wattage Configuration mode Power inline police actionlog errdisable ExitShow power inline police Show errdisable recovery Power inline police actionlog errdisable Power inline police action log-Generates a syslog message While still providing power to the portDown the port and puts the port in the error-disabled state Monitoring Power Status Configuration Examples for Configuring PoEBudgeting Power Example Information About EEE EEE Overview EEE is disabled by default How to Configure EEEDefault EEE Configuration Restrictions for EEE Command Specifies the interface to be configured, and enterPower efficient-ethernet auto Monitoring EEE Configuration Examples for Configuring EEE This example shows how to enable EEE for an interfaceThis example shows how to disable EEE for an interface Feature History and Information for Configuring EEE OL-29034-01 D E PoE