⚙ DHCP Troubleshooting

📖 What is DHCP?

DHCP (Dynamic Host Configuration Protocol) என்பது Devices-க்கு Automatic-ஆக IP Address, Gateway மற்றும் DNS வழங்கும் Protocol ஆகும்.

🎯 Why DHCP?

✔ Automatic IP Assignment

✔ Easy Network Management

✔ Prevent Manual Errors

✔ Centralized Control

✔ Faster Deployment

⚙ DHCP Process (DORA)

Discover

Offer

Request

Acknowledge

இந்த 4 Steps மூலமே DHCP IP Address வழங்குகிறது.

💻 Useful Commands

ipconfig /all

ipconfig /release

ipconfig /renew

ipconfig /flushdns

🚨 Common DHCP Problems

IP Address Not Assigned

169.254.x.x APIPA Address

DHCP Server Down

Address Pool Exhausted

Wrong Gateway Assigned

🔧 Troubleshooting Steps

✔ Verify DHCP Server Status

✔ Check DHCP Scope

✔ Verify VLAN Configuration

✔ Renew IP Address

✔ Check Relay Agent Settings

📊 APIPA Address

169.254.x.x Address வந்தால் DHCP Server-லிருந்து IP கிடைக்கவில்லை என்று அர்த்தம்.

🌍 Real World Usage

Enterprise Networks

Campus Networks

Wi-Fi Networks

Data Centers

ISP Customer Networks

🎤 Interview Questions

What is DHCP?

What is DORA Process?

What is APIPA?

How to Renew DHCP Address?

Difference Between Static IP and DHCP?

📝 Summary

DHCP Troubleshooting என்பது Network Support Engineer மற்றும் Network Administrator-களுக்கு மிகவும் முக்கியமான Skill ஆகும்.

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