Switched Port Analyzer

A network auditing tool that validates SPAN/RSPAN configurations, port mappings, and VLAN alignment to ensure reliable traffic capture for diagnostics and security monitoring.

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100%

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4.9 / 5.0

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About This Tool

The Switched Port Analyzer provides a focused framework for validating port mirroring configurations in multi-vendor networks. It helps engineers confirm that SPAN, RSPAN, and ERSPAN sessions are correctly defined and mapped, ensuring captured traffic truly represents intended sources. The tool conceptualizes topology, sessions, and VLAN mappings as a single model to surface misconfigurations before deployment. It emphasizes reliability, repeatability, and auditable changes by producing structured reports that align with change-control processes. By design, it avoids live-network actions and instead offers planning and validation guidance that reduces downtime and capture gaps. This differentiates it from generic network inventory tools by targeting the fidelity of traffic replication rather than broader device discovery.

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How to Use

Provide inputs: topology, span_sessions, and vlan_map.
Configure span_type (SPAN, RSPAN, ERSPAN) and device constraints.
Run analysis to generate audit findings.
Review outputs: misconfig items, risk score, and recommended fixes.
Apply changes in the design and re-run to verify.

Frequently Asked Questions

Find Quick Answers

What is SPAN?

SPAN copies traffic from specified source ports to a designated destination port for inline capture, enabling packet analyzer or IDS tools to observe traffic without affecting the original flow. RSPAN and ERSPAN extend mirroring across switches or over IP tunnels.

What data must be provided?

Inputs include a topology model (switches and ports), SPAN session definitions (sources, destination, direction), and VLAN mappings. The tool validates port existence, VLAN consistency, and cross-device compatibility, then reports gaps or conflicts.

How are risks scored?

Risks combine severity of each issue (missing destination, VLAN tag mismatch, conflicting sessions, or invalid port types) into a 0–100 score. Higher scores indicate remediation priority, with explicit steps to resolve each detected problem.

Does it support multiple vendors?

Yes. The analysis normalizes common vendor configurations and checks cross-vendor constraints. It flags vendor-specific limitations, such as non-compatible features or tags, while offering vendor-aware remediation guidance.

Can it propose fixes?

The tool suggests concrete remediations for each finding, such as reassigning source ports, adjusting VLAN mappings, or changing the destination port. It also supports re-validation to confirm that changes resolve the issues.

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