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  • Content created by Rene Molenaar (CCIE #41726)

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Forum Replies

  1. Hi Rene,
    Very Good article for Beginners.


  2. Hello Rene, This is great work that you are doing and even if I find it difficult to grasp the concept, I have a feeling that something is happening to my understanding :). Your examples are clear to a point but when I try using my own values, ie other addresses I get lost rather fast :(.

    For instance, I have the following address: and I am required to find out 1. Network address. 2.first and last usable addresses and the broadcast address. I figured out that the first address must be the following: and as

    ... Continue reading in our forum

  3. Hi George,

    Let’s walk through this example together, that might help…

    First we need to figure out the network address and to do that, we need to take a close look at the subnet mask:

    The subnet mask defines how large each subnet is. You can do this in binary but I’ll use decimal since it’s faster. A quick method is to take the number 256 minus the subnet mask. We are looking at the 4th octet so that’s 248:

    256 - 248 = 8

    We now know that each subnet has 8 addresses. Let’s start counting from 0 to show you how it works:

    Subnet #1

    ... Continue reading in our forum

  4. Ali,
    You are correct, and I have corrected the error. Nice catch.

  5. Thanks for your kind words Umer! I’ll see if I can add some videos for subnetting.

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