Cisco Catalyst 4500 Series Command Reference Guide

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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 detect
errdisable detect
To enable error-disable detection, use the errdisable detect command. To disable the error-disable
detection feature, use the no form of this command.
errdisable detect cause {all | arp-inspection [action shutdown vlan] | bpduguard shutdown
vlan | dhcp-rate-limit [action shutdown vlan] | dtp-flap | gbic-invalid | l2ptguard | link-flap
| pagp-flap}
no errdisable detect cause {all | arp-inspection [action shutdown vlan] | bpduguard shutdown
vlan | dhcp-rate-limit [action shutdown vlan] | dtp-flap | gbic-invalid | l2ptguard | link-flap
| pagp-flap}
Syntax Description
Defaults All error-disable causes are detected.
Command Modes Global configuration mode
Command History
Usage Guidelines A cause (dtp-flap, link-flap, pagp-flap) 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 link-down state).
You must enter the shutdown command and then the no shutdown command to recover an interface
manually from the error-disable state.
cause Specifies error-disable detection to detect a specific cause.
all Specifies error-disable detection for all error-disable causes.
arp-inspection Specifies the detection for the ARP inspection error-disable cause.
action shutdown vlan (Optional) Specifies per-VLAN error-disable for ARP inspection and DHCP
rate limiting.
bpduguard shutdown
vlan
Specifies per-VLAN error-disable for BPDU guard.
dhcp-rate-limit Specifies the detection for the DHCP rate-limit error-disable cause.
dtp-flap Specifies the detection for the DTP flap error-disable cause.
gbic-invalid Specifies the detection for the GBIC invalid error-disable cause.
l2ptguard
Specifies the detection for the Layer 2 protocol-tunnel error-disable cause.
link-flap Specifies the detection for the link flap error-disable cause.
pagp-flap Specifies the detection for the PAgP flap error-disable cause.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.2(52)SG Added support for per-VLAN error-disable detection.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E