Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Command Reference
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Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
errdisable recovery
Note Though visible in the command-line help strings, the arp-inspection, storm-control, and unicast-flood
keywords are not supported.
Defaults Recovery is disabled for all causes.
The default recovery interval is 300 seconds.
Command Modes Global configuration
Command History
Usage Guidelines A cause (bpduguard, dhcp-rate-limit, and so forth) 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 similar to link-down state. If you do not enable the recovery for the cause, the interface
stays in error-disabled state until you enter a shutdown and no shutdown interface configuration
command. If you enable the recovery for a cause, the interface is brought out of the error-disabled state
and allowed to retry the operation again when all the causes have timed out.
Otherwise, you must enter the shutdown then no shutdown commands to manually recover an interface
from the error-disabled state.
Examples This example shows how to enable the recovery timer for the BPDU guard error-disable cause:
Switch(config)# errdisable recovery cause bpduguard
This example shows how to set the timer to 500 seconds:
Switch(config)# errdisable recovery interval 500
You can verify your settings by entering the show errdisable recovery privileged EXEC command.
Related Commands
Release Modification
12.1(4)EA1 This command was introduced.
12.1(8)EA1 The rootguard keyword was deleted.
12.1(9)EA1 The gbic-invalid, l2ptguard, and psecure-violation keywords were added.
12.1(13)EA1 The channel-misconfig keyword was added.
12.1(19)EA1 The dhcp-rate-limit, loopback, security-violation, and vmps keywords
were added.
12.2(25)SEA The arp-inspection keyword was added.
Command Description
show errdisable recovery Displays error-disabled recovery timer information.
show interfaces status
err-disabled
Displays interface status or a list of interfaces in error-disabled
state.