Cisco Catalyst 4500 Series - Page 316

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
errdisable recovery
Defaults Error disable recovery is disabled.
The recovery interval is set to 300 seconds.
Command Modes Global configuration mode
Command History
Usage Guidelines A cause (bpduguard, dtp-flap, link-flap, pagp-flap, udld) is defined as the reason why the error-disabled
state occurred. When a cause is detected on an interface, the interface is placed in error-disabled state
(an operational state that is similar to the link-down state). If you do not enable error-disable recovery
for the cause, the interface stays in the error-disabled state until a shutdown and no shutdown occurs. If
you enable recovery for a cause, the interface is brought out of the error-disabled state and allowed to
retry operation again once all the causes have timed out.
You must enter the shutdown command and then the no shutdown command to recover an interface
manually from error disable.
Examples This example shows how to enable the recovery timer for the BPDU guard error disable cause:
Switch(config)# errdisable recovery cause bpduguard
Switch(config)#
This example shows how to set the timer to 300 seconds:
Switch(config)# errdisable recovery interval 300
Switch(config)#
This example shows how to enable the errdisable recovery for arp-inspection:
Switch(config)# errdisable recovery cause arp-inspection
Switch(config)# end
Switch# show errdisable recovery
ErrDisable Reason Timer Status
----------------- --------------
udld Disabled
bpduguard Disabled
security-violatio Disabled
channel-misconfig Disabled
vmps Disabled
pagp-flap Disabled
dtp-flap Disabled
link-flap Disabled
l2ptguard Disabled
psecure-violation Disabled
gbic-invalid Disabled
dhcp-rate-limit Disabled
unicast-flood Disabled
storm-control Disabled
arp-inspection Enabled
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.1(19)EW Support for the storm-control feature.