IPv4 Subnetting – Network and Broadcast Addresses
Each IPv4 subnet has two reserved addresses that are used within that configured IP address space. These are the network and broadcast addresses. These are special addresses for various mechanisms necessary for IPv4. In this video, we’ll see how we can identify these in the process of subnetting, and we’ll also see what they are used for.
Links to some additional useful videos concerning subnetting can be found further down in the description.
Chapter list:
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00:00 Introduction
00:28 Understanding an IP Subnet
02:18 The Network and Broadcast Addresses
03:43 What is the Network Address used for?
04:52 What is the Broadcast address used for?
05:51 Summary
Related links and videos:
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Video: Why does IP require subnetting? – https://youtu.be/o1_uHPmb22k
Video: How Subnetting works – https://youtu.be/N67jxBTK8OY
Video: Internet Protocol (IP) – What is it? – https://youtu.be/tJP_PYsLl2Q
Video: Why is 255.255.255.0 the most common subnet mask? – https://youtu.be/GToY3yHxntg
source
ipv4
Just one note here, I mention ARP and DHCP as protocols that use the network broadcast address. In actuality, ARP is only a Layer 2 protocol, so it won't use the IPv4 broadcast address. Instead, it will use the broadcast MAC destination address of FF:FF:FF:FF:FF:FF in the frame. DHCP on the other hand, although it does function at Layer 3, it can use either the local broadcast address of 255.255.255.255 or the network broadcast address of the network in question. So it would have been preferable to use the DHCP example in the video. Even so, the logic of the network broadcast address described in the video still holds true… Thanks for your understanding!!
You're a gifted teacher! You threw a lot of material but still broke it down effectively. Well done!