A user reports intermittent connectivity. You suspect a Layer 2 issue. Walk through your troubleshooting methodology for diagnosing switching and VLAN problems.

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Diagnosing intermittent Layer 2 issues requires a methodical approach because the symptoms can be subtle and the causes varied. Intermittent connectivity at Layer 2 is often harder to troubleshoot than a complete outage because the problem comes and goes, making it difficult to…