This document defines the errdisabled state, describes how to recover from it, and provides examples of errdisable recovery. This document uses the terms errdisable and error disable interchangeably. Customers often contact Cisco Technical...More
This document defines the errdisabled state, describes how to recover from it, and provides examples of errdisable recovery. This document uses the terms errdisable and error disable interchangeably. Customers often contact Cisco Technical Support when they notice that one or more of their switch ports have become error disabled, which means that the ports have a status of errdisabled. These customers want to know why the error disablement happened and how they can restore the ports to normal.
This document is intended to help determine why a port or interface experiences problems. This document applies to Catalyst switches that run CatOS Software on the Supervisor or Cisco IOSĀ® System Software on the Supervisor.
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The purpose of this document is to cover common issues associated with network interface cards (NICs) that interoperate with Cisco Catalyst switches. Network issues, such as slow performance and connectivity problems, as well as Catalyst sw...
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This document explains how to recover Cisco Catalyst fixed configuration switches from a corrupt or missing system image or an incorrectly set boot variable. The Catalyst fixed configuration switches that this document describes include the...
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This document explains how to configure interVLAN routing with Cisco Catalyst 3750/3560/3550 series switches. The document provides a sample configuration for interVLAN routing with a Catalyst 3550 series switch that runs enhanced multilaye...
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This page is an index of password recovery procedures for Cisco products. For security reasons, the password recovery procedures listed here require physical access to the equipment.
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This document describes the password recovery procedure for the Cisco Catalyst Layer 2 fixed configuration switches 2900XL/3500XL, 2940, 2950/2955, 2960, and 2970 Series, as well as the Cisco Catalyst Layer 3 fixed configuration switches 35...
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This document discusses input and output queue drops taken from the output of the show interfaces command on the router. This document describes what these drops mean, the type of problems they indicate, and how to troubleshoot the source o...
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This document is an informal discussion of some Cisco configuration settings that network administrators should consider changing on their routers, especially on their border routers, in order to improve security. This document is about bas...
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