Tuesday, March 25, 2025
Latest:
Computer NetworksNETWORKS

What is Subnetting? – Subnetting Mastery – Part 1 of 7

Alice AUSTIN

This video will teach you the basics of subnetting. Every Subnetting problem will ask you to solve for one or more of seven possible attributes: Network ID, Broadcast IP, First Host IP, Last Host IP, Next Network, Number of IP Addresses, and CIDR/Subnet Mask conversions. This video explains what each of the attributes are.

What if there were a single video series that could make you a Subnetting Master? What if that video series were available for free, for everyone?

Look no further. This is it. This is video 1 of the series. The complete video series will make you a Subnetting Pro.

00:00 – Start
00:15 – What is Subnetting?
01:40 – What are the seven attributes of Subnetting?
02:00 – What is the number of IP addresses in a Subnet?
02:31 – What are CIDR notations and Subnet Masks?
03:15 – What is the Network ID?
03:34 – What is the Broadcast IP?
03:53 – What are the purpose of the Net ID and Broadcast IP?
05:35 – What is the First Host IP?
06:14 – What is the Last Host IP?
06:38 – What is the Next Network?

https://www.practicalnetworking.net

Part 1:
(scroll up)
Part 2:

Part 3:

Part 4:

Part 5:

Part 6:

Part 7:

FLSM and VLSM – Part 1:

FLSM and VLSM – Part 2:

After you’ve watched the full series… Practice solving Subnetting problems here: https://SubnetIPv4.com

#subnetting #networking #ccna

source

ip address

Alice AUSTIN

Alice AUSTIN is studying Cisco Systems Engineering. He has passion with both hardware and software and writes articles and reviews for many IT websites.

You May Also Like

What is IP Address? IPv4 Vs IPv6 Explained

Alice AUSTIN

CCNA 2024

GLOBAL CERTIFICATION | IT CERTIFICATION | PMP | PMI | CCNA | CCNP | TOGAF | SAP | TERRAFORM | AWS |

21 thoughts on “What is Subnetting? – Subnetting Mastery – Part 1 of 7”

  • First, thank you SO much for this video series. Before watching, I had used Keith Owens, James Messer, and Jason Dion and all of them have their benefits in terms of detail or practicality. However, your video series absolutely solidified the practical application of subnetting as none of the others had. It just totally nailed it for me. I can do it now. Thanks again!
    This leads me to a question. Is there a reason you don't list the seven questions in an order that would make the arrangement more sequential?
    This pattern always leads to a 2/3 sequential relationship.
    Two IP's in sequence, Three IP's in sequence.
    Network/ First IP (2), Last IP,/Broadcast/Next Net (3).
    For example:
    Target: 10.1.1.37 /29
    Network ID: 10.1.1.32
    First IP: 10.1.1.33
    Last IP: 10.1.1.38
    Broadcast IP: 10.1.1.39
    Next Network: 10.1.1.40
    # Of IP's / Usable: 8/6
    CIDR / Subnet: 255.255.255.248

  • I just start watch this video. Thanks for it!
    I сome up a little poem for remember 7 attributes

    The seven attributes subnet
    trust me you need, to be a great!
    ID subnet, IP broadcast,
    IP host one, IP host last,,
    say me how many address,
    finde next network and you success.
    I'm sorry i forgot for mask
    and CIDR for addition task.

    I'm not a native and hope for this not a big grammar mistakes. Hopefully useful)

  • I think i understand this now but i certainly hope nobody asks me any questions about it.

  • Finally I understand subnetting! Thank you for this easy and awesome short video.

  • Im confused.. at 4:43 when you show that .128 to .159 is 32 ips .. im only counting 31.. what am i missing?

  • Hello Ed, just came by to say THANK YOU VERY MUCH for the subnetting series. This was the light bulb moment for me and it helped me pass my CCNA today. Again, thank you!

  • I struggled so much trying to understand subnetting in my uni course. Thanks to you I can now confidently go to the exam 😀

  • Kind of still confusing 😢 at the beginning, you say it’s a refer to /24 something. Then you divide the whole in to 2 equal parts, 24/ changes to /25?? What’s the slash+number meaning?

  • Finally an explanation I understood! Great visualization!

  • subnetting is just the most confusing thing, the hardest thing on the CCNA for me, i simply cant grasp it with any sort of confidence. . 🤢

  • Again i wanted to thank you, i watched so many videos and been in class for this topc but thanks to your video series i fully understand ipv4 subnettig, yesterday we started with ipv6 in class. And again, my prof is more confusing then helpful. Would be nice if you would do a series on ipv6.

  • Enjoying and finding that there is such simplicity and thoroughness in explaining subnetting. 😮Thank you for your fantastic videos! 😊

  • Awesome playlist, I'm studying for the CCNA and this definitely solidified my understanding of subnetting !

Comments are closed.