𝐖𝐡𝐚𝐭 𝐈s 𝐈𝐏 𝐀𝐝𝐝𝐫𝐞𝐬𝐬?

An IP address is a unique identifier assigned to devices on a network. It allows computers, printers, and servers to communicate with each other. Without an IP address, a device cannot send or receive data. Every device needs a unique IP, making network communication possible.

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𝐃𝐇𝐂𝐏 (𝐃𝐲𝐧𝐚𝐦𝐢𝐜 𝐇𝐨𝐬𝐭 𝐂𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐭𝐢𝐨𝐧 𝐏𝐫𝐨𝐭𝐨𝐜𝐨𝐥)

𝐒𝐢𝐦𝐩𝐥𝐞 𝐄𝐱𝐩𝐥𝐚𝐧𝐚𝐭𝐢𝐨𝐧

DHCP automatically assigns IP addresses to devices when they join a network. No manual input is required, making it ideal for home users and environments where devices frequently connect or disconnect.

𝐇𝐨𝐰 𝐢𝐭 𝐖𝐨𝐫𝐤𝐬

• Device requests an IP when connecting to Wi-Fi or LAN.
• Router/DHCP Server assigns an available IP.
• Device receives gateway, DNS, and subnet mask automatically.

𝐄𝐱𝐚𝐦𝐩𝐥𝐞

If your router range is 192.168.1.2 – 192.168.1.200 DHCP may assign:

• Mobile → 192.168.1.15
• Laptop → 192.168.1.27
• TV → 192.168.1.33

𝐀𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞𝐬

• No manual setup needed.
• Best for home and basic office users.
• Prevents IP conflicts.
• Easy to manage many devices.

𝐃𝐢𝐬𝐚𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞𝐬

• IP can change frequently.
• Not suitable for CCTV, servers, printers, NAS, or remote access systems.

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𝐒𝐭𝐚𝐭𝐢𝐜 𝐈𝐏 (𝐏𝐞𝐫𝐦𝐚𝐧𝐞𝐧𝐭 𝐈𝐏)

𝐒𝐢𝐦𝐩𝐥𝐞 𝐄𝐱𝐩𝐥𝐚𝐧𝐚𝐭𝐢𝐨𝐧

A Static IP is manually configured and stays constant regardless of device restarts or reconnections. It is ideal for devices that must always be reachable using the same address.

𝐖𝐡𝐞𝐧 𝐭𝐨 𝐔𝐬𝐞 𝐒𝐭𝐚𝐭𝐢𝐜 𝐈𝐏

Static IPs are commonly used for devices requiring stable, predictable connectivity:

• Servers (Windows/Linux)
• CCTV DVR/NVR
• Network Printers
• NAS Storage
• Remote Access Systems
• Web/App Hosting

𝐄𝐱𝐚𝐦𝐩𝐥𝐞

For a CCTV DVR:

• IP: 192.168.1.50
• Subnet: 255.255.255.0
• Gateway: 192.168.1.1
• DNS: 8.8.8.8

𝐀𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞𝐬

• Perfect for servers & fixed-location devices.
• Reliable for remote access.
• Easier port forwarding.

𝐃𝐢𝐬𝐚𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞𝐬

• Requires manual configuration.
• Higher risk of IP conflicts if set incorrectly.
• Not suitable for mobile or frequently changing devices.

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𝐊𝐞𝐲 𝐃𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐜𝐞𝐬 (𝐒𝐢𝐦𝐩𝐥𝐢𝐟𝐢𝐞𝐝)

Feature	DHCP	Static IP
Assignment	Automatic	Manual
IP Change	Yes	No
Best For	Mobiles, TV, Laptop	Servers, CCTV, Printers
Setup Time	Very Easy	Requires Configuration
Stability	Medium	High

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𝐑𝐞𝐚𝐥-𝐖𝐨𝐫𝐥𝐝 𝐄𝐱𝐚𝐦𝐩𝐥𝐞𝐬

𝐇𝐨𝐦𝐞 𝐔𝐬𝐞

• Mobile, TV, Laptop → DHCP
• Wi-Fi Printer → Static IP

𝐎𝐟𝐟𝐢𝐜𝐞

• Employee Devices → DHCP
• Servers, NAS, Firewall → Static IP
• CCTV DVR/NVR → Static IP
• VoIP Phones → Static / Reserved DHCP

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𝐃𝐇𝐂𝐏 𝐑𝐞𝐬𝐞𝐫𝐯𝐚𝐭𝐢𝐨𝐧 (𝐌𝐢𝐱𝐞𝐝 𝐌𝐨𝐝𝐞)

DHCP Reservation assigns a fixed IP to a device using its MAC address. The device still uses DHCP but always receives the same IP.

Example:

• Printer MAC → AA:BB:CC:11:22:33
• Reserved IP → 192.168.1.40

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𝐖𝐡𝐢𝐜𝐡 𝐎𝐧𝐞 𝐒𝐡𝐨𝐮𝐥𝐝 𝐘𝐨𝐮 𝐔𝐬𝐞?

Choose DHCP If:

• Device is mobile and moves around.
• You prefer plug-and-play setup.
• You are not managing servers.

Choose Static IP If:

• Device must always be reachable.
• You need remote access or port forwarding.
• You manage servers, CCTV, or hosting systems.

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𝐐𝐮𝐢𝐜𝐤 𝐒𝐞𝐭𝐭𝐢𝐧𝐠 𝐄𝐱𝐚𝐦𝐩𝐥𝐞 (𝐖𝐢𝐧𝐝𝐨𝐰𝐬)

DHCP Mode

• Open Network Connections
• Right-click Wi-Fi / Ethernet → Properties
• Select IPv4 → Obtain IP Address Automatically

Static Mode

Enter values manually:

IP: 192.168.1.55
Subnet: 255.255.255.0
Gateway: 192.168.1.1
DNS: 8.8.8.8