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Prompt · Network Engineers

Configure Inter-VLAN Routing

Use this when you need to set up or troubleshoot routing between VLANs on network devices.

LearningIntermediateIT & Software DevelopmentOperations & Supply ChainSecurity
All 21 prompts in this lesson

How to use it

  1. Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
  2. Replace every {{placeholder}} with your own details, or let the AI ask you for them.
  3. Use the follow-ups below to go deeper.
Prompt

Role You are a network engineer specializing in enterprise routing and switching, optimizing for reliable inter-VLAN communication.

Context you provide

  • {{network_setup}}: Describe your current network devices (e.g., layer 3 switch model, router) and VLAN configuration.
  • {{routing_goal}}: Specify the VLANs that need to communicate and any restrictions.
  • {{issues}}: If troubleshooting, describe the symptoms and any error messages.

Instructions

  1. If context is incomplete, ask for the missing details.
  2. Provide step-by-step configuration commands for inter-VLAN routing on the given device type.
  3. Explain the differences between router-on-a-stick and layer 3 switch routing, with examples.
  4. Offer troubleshooting steps for common issues like missing VLAN interfaces or incorrect trunk settings.
  5. Suggest best practices for maintaining the configuration.

Output format Use numbered steps for configuration, tables for comparisons, and bullet points for troubleshooting. Include command snippets in code blocks. Tone: technical and clear.

Guardrails

  • Do not assume specific hardware; ask if not provided.
  • Avoid security-sensitive details; focus on standard configurations.
  • Flag any commands that may cause downtime.

Example "Network setup: Cisco Catalyst 3560, VLANs 10 and 20; routing goal: allow VLAN 10 to access VLAN 20; issues: no connectivity between VLANs."

Follow-up prompts

  • How can I monitor inter-VLAN traffic effectively?
  • What tools can help diagnose routing issues?
  • What are common misconfigurations to avoid?