What is CIDR (Classless Inter Domain Routing)?

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▬▬▬▬▬▬ 📖 Time Stamps: ▬▬▬▬▬▬
0:00 - CIDR introduction
0:18 - What is CIDR?
0:30 - How the IP addresses range is calculated?
01:39 - How 32 bit IPv4 Address is used for IP range calculation?
05:29 - Creat VPC and Subnet with CIDR ranges

Understanding CIDR: Efficient IP Addressing Explained
In this video, we dive into the concept of CIDR (Classless Inter-Domain Routing), a powerful method used by network engineers to efficiently allocate IP addresses. Imagine a city where every building needs its own unique address. In the past, city planners assigned large blocks of addresses, leaving many unused. CIDR comes to the rescue by acting like a smart city planner, assigning only the necessary number of addresses to each network, preventing waste, and ensuring space for future growth.

We'll explore:
• How CIDR Works: The importance of the CIDR prefix (like /24 or /28) and how it divides IP addresses.
• Real-world Examples: How businesses, from small branch offices to large corporate headquarters, benefit from CIDR.
• Key Benefits: CIDR's role in improving IP address efficiency, flexibility, and simplifying routing.
Whether you're managing a small home network or a large enterprise, CIDR helps allocate just the right amount of IP addresses, ensuring smooth operation without wasting valuable resources. Join us to learn how this simple but effective technique is the backbone of modern network management.

[RahatMiah-zo]

I've always struggled with networking portions of IT. This was an incredibely clear and concise explanation. Thank you for this

[rigelmandarakuriom]

Simply the best explanation… Rahul is an exceptional presenter. Thanks ❤

[DreamCatcher-bd]

Excellent explanation. Thank you so much Rahul ji.

[adikaliekamara]

Brother thank you so much for the understandable explanation

[VinayTripathi-bh]

Great video sir, please keep uploading such video. I am learning a lot from you

[Aashouro]

Can you explain the part of the base IP in your example which start with 125 ? i think the ip range in this example would be start with 125 and going up to more 15 ips, if i am not mistaken. OR, can you please explain how do you define first IP and last IP form the given ip which 11.0.1.125/28

[joooski]

at 8:02 you mean create vpcs or subnets?

[kalpeshmohanta]

Determine Network IP & Host IP:

Example: 192.168.0.4/12

Perform Bitwise AND Operation:

(192.168.0.4) IP Address:
(12) Subnet Mask:
(192.160.0.0) Result (AND):

Network Address: 192.160.0.0
Usable IP: 192.160.0.1 to 192.175.255.254
Broadcast Address: 192.175.255.255