Switch Port Configuration and Troubleshooting
CRC errors are usually caused by interference. This interference might be due to poor quality cable or termination,
Troubleshooting Interfaces
FastEthernet 0/1 is showing down. This could indicate a layer 1 problem like a broken cable, wrong cable (crossover instead of
SFP Issue: Causes, Fixes, and Troubleshooting Guide
Learn how to fix SFP issues fast: no link light, link flapping, detection errors, compatibility problems, and optical power
Use Parity Errors Troubleshooting Guide
Depending on the level of insertion (for example, if there is limited physical contact), the module can be able to
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
For example, in the case of a broken fiber, if only the Tx path from the F port to the N port is broken, then the switch interface will still
Troubleshooting MAC Bit Errors on Cisco MDS Fibre-Channel switches
MAC Bit Errors on Cisco Fibre-channel switches are indications that a physical link is unhealthy. This document
Common Error Messages on Catalyst 6500/6000 Series Switches
The switch has its normal vibrations and over time those vibrations can cause a module to slightly come away from the
This reference is intended for preliminary fiber optic adapter research. Compatibility, link budgets, connector interfaces, sleeve materials, polish, installation methods, test limits and applicable standards must be verified for the specific project.