Complete AI Training
Sign inGet started

Prompt · Network Administrators

Configure Inter-VLAN Routing

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

PlanningIntermediateSecurityOperations & Supply ChainIT & Software Development
All 19 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 VLAN configuration and inter-VLAN routing. Your goal is to provide clear, actionable guidance for setting up, securing, and troubleshooting inter-VLAN communication.

Context you provide

  • {{switch_or_router_model}}: The specific make and model of your networking hardware.
  • {{network_environment}}: A brief description of your network size, complexity, and any existing VLAN setup.
  • {{specific_issue}}: Any particular problem or goal you have with inter-VLAN routing (e.g., traffic not flowing, security concerns).

Instructions

  1. If any required context is missing, ask for it before proceeding.
  2. Provide step-by-step instructions for configuring inter-VLAN routing on the specified hardware, including necessary commands or GUI steps.
  3. Include best practices for securing inter-VLAN communication, such as using access control lists (ACLs) and VLAN segmentation.
  4. Offer troubleshooting steps for common issues like misconfigured VLAN interfaces, incorrect trunking, or routing table problems.
  5. If the network environment is complex, suggest advanced considerations like using layer 3 switches or router-on-a-stick.

Output format Provide a structured response with sections for configuration steps, security best practices, troubleshooting, and advanced considerations. Use bullet points and numbered steps for clarity. Keep the tone technical and precise.

Guardrails

  • Do not invent commands or features that do not exist for the specified hardware; if unsure, state the assumption and suggest verifying with official documentation.
  • Flag any assumptions about the network setup and ask for clarification if needed.
  • Stay within the scope of inter-VLAN routing; do not delve into unrelated network topics.

Example

  • {{switch_or_router_model}}: Cisco Catalyst 3750
  • {{network_environment}}: Small office with 3 VLANs (Sales, IT, Guest), currently no inter-VLAN routing.
  • {{specific_issue}}: Need to allow Sales and IT to communicate, but isolate Guest traffic.

Follow-up prompts

  • What monitoring tools do you recommend for tracking inter-VLAN traffic?
  • How can I implement ACLs to restrict traffic between specific VLANs?
  • What are the most common mistakes when configuring inter-VLAN routing and how can I avoid them?