Cisco Systems N5KC5596TFA Enabling the Error-Disabled Detection, Config t, Loopback, Shutdown

Configuring Layer 2 Interfaces

Enabling the Error-Disabled Detection

Procedure

	Command or Action	Purpose
Step 1	switch# configure terminal	Enters configuration mode.
Step 2	switch(config)# interface type slot/port	Enters interface configuration mode for the specified
		interface.
Step 3	switch(config-if)# cdp enable	Enables CDP for the interface.
		To work correctly, this parameter must be enabled
		for both interfaces on the same link.
Step 4	switch(config-if)# no cdp enable	Disables CDP for the interface.

This example shows how to enable CDP for an Ethernet port:

switch# configure terminal switch(config)# interface ethernet 1/4 switch(config-if)#cdp enable

This command can only be applied to a physical Ethernet interface.

Enabling the Error-Disabled Detection

You can enable error-disable (err-disabled) detection in an application. As a result, when a cause is detected on an interface, the interface is placed in an err-disabled state, which is an operational state that is similar to the link-down state.

Procedure

	Command or Action	Purpose
Step 1	config t	Enters configuration mode.
	Example:
	switch# config t
	switch(config)#
Step 2	errdisable detect cause {all link-flap	Specifies a condition under which to place the
	loopback}	interface in an err-disabled state. The default is
		enabled.
	Example:
	switch(config)# errdisable detect cause
	all
	switch(config)#

Step 3 shutdown

Example:

switch(config)# shutdown switch(config)#

Brings the interface down administratively. To manually recover the interface from the err-disabled state, enter this command first.

	Cisco Nexus 5000 Series NX-OS Interfaces Configuration Guide, Release 5.2(1)N1(1)
16	78-26881-OL